diff --git a/.github/workflows/snippets-validate.yml b/.github/workflows/snippets-validate.yml
new file mode 100644
index 00000000..5b2ce16f
--- /dev/null
+++ b/.github/workflows/snippets-validate.yml
@@ -0,0 +1,164 @@
+name: Validate snippets
+
+# Runs the per-SDK validators in parallel. Each cell delegates to
+# `launchdarkly/gh-actions/actions/verify-hello-app@v2.0.1`, which is the
+# same action the `hello-*` repos use to:
+#   - assume the configured AWS role via OIDC (`vars.AWS_ROLE_ARN_EXAMPLES`)
+#   - fetch the LaunchDarkly Sandbox account credentials from Secrets
+#     Manager and inject the appropriate key as an env var
+#     (LAUNCHDARKLY_SDK_KEY, LAUNCHDARKLY_CLIENT_SIDE_ID, or
+#     LAUNCHDARKLY_MOBILE_KEY based on the use_*_key flag)
+#   - run `command:` and assert its output contains the EXAM-HELLO
+#     `feature flag evaluates to true` line.
+#
+# Each matrix row declares `key-type: server | client | mobile` so the
+# right `use_*_key` flag is set for the SDK under test. The action also
+# injects LAUNCHDARKLY_FLAG_KEY from the SSM parameter
+# /sdk/common/hello-apps/boolean-flag-key, matching what every hello-*
+# repo's CI relies on; we don't set it ourselves.
+#
+# fail-fast: false so every cell runs to completion. A final `summary` job
+# aggregates per-cell artifacts into a markdown table.
+
+on:
+  pull_request:
+    paths:
+      - 'snippets/**'
+      - '.github/workflows/snippets-validate.yml'
+  workflow_dispatch:
+
+permissions:
+  id-token: write    # OIDC for verify-hello-app's AWS role assumption
+  contents: read
+
+concurrency:
+  group: snippets-validate-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  validate:
+    name: ${{ matrix.sdk }}
+    runs-on: ${{ matrix.runs-on }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          # Linux server-runtime SDKs (Docker validators):
+          - { sdk: python-server-sdk, runs-on: ubuntu-latest, key-type: server }
+          - { sdk: go-server-sdk,     runs-on: ubuntu-latest, key-type: server }
+          - { sdk: node-server-sdk,   runs-on: ubuntu-latest, key-type: server }
+          - { sdk: node-client-sdk,   runs-on: ubuntu-latest, key-type: client }
+          - { sdk: ruby-server-sdk,   runs-on: ubuntu-latest, key-type: server }
+          - { sdk: php-server-sdk,    runs-on: ubuntu-latest, key-type: server }
+          - { sdk: rust-server-sdk,   runs-on: ubuntu-latest, key-type: server }
+          - { sdk: dotnet-server-sdk, runs-on: ubuntu-latest, key-type: server }
+          - { sdk: dotnet-client-sdk, runs-on: ubuntu-latest, key-type: mobile }
+          - { sdk: java-server-sdk,   runs-on: ubuntu-latest, key-type: server }
+          - { sdk: cpp-server-sdk,    runs-on: ubuntu-latest, key-type: server }
+          - { sdk: cpp-client-sdk,    runs-on: ubuntu-latest, key-type: mobile }
+          - { sdk: lua-server-sdk,    runs-on: ubuntu-latest, key-type: server }
+          - { sdk: haskell-server-sdk, runs-on: ubuntu-latest, key-type: server }
+          - { sdk: erlang-server-sdk, runs-on: ubuntu-latest, key-type: server }
+          # Browser SDKs (headless Playwright):
+          - { sdk: js-client-sdk,     runs-on: ubuntu-latest, key-type: client }
+          - { sdk: vue-client-sdk,    runs-on: ubuntu-latest, key-type: client }
+          - { sdk: react-client-sdk,  runs-on: ubuntu-latest, key-type: client }
+          - { sdk: flutter-client-sdk, runs-on: ubuntu-latest, key-type: client }
+          - { sdk: android-client-sdk, runs-on: ubuntu-latest, key-type: mobile }
+          - { sdk: react-native-client-sdk, runs-on: ubuntu-latest, key-type: mobile }
+          # iOS (macOS runner + xcodebuild + iOS Simulator):
+          - { sdk: ios-client-sdk,     runs-on: macos-latest,  key-type: mobile }
+          # Skipped: roku-client-sdk (validation: none, manual procedure).
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: '1.24'
+
+      - name: Validate
+        id: validate
+        uses: launchdarkly/gh-actions/actions/verify-hello-app@verify-hello-app-v2.0.1
+        with:
+          use_server_key: ${{ matrix.key-type == 'server' }}
+          use_client_key: ${{ matrix.key-type == 'client' }}
+          use_mobile_key: ${{ matrix.key-type == 'mobile' }}
+          role_arn: ${{ vars.AWS_ROLE_ARN_EXAMPLES }}
+          command: |
+            set -o pipefail
+            cd snippets
+            go run ./cmd/snippets validate --sdk=${{ matrix.sdk }} \
+              --sdks=./sdks --validators=./validators 2>&1 | tee /tmp/validate.log
+
+      - name: Record result
+        if: always()
+        run: |
+          mkdir -p /tmp/result
+          if [ "${{ steps.validate.outcome }}" = "success" ]; then
+              echo "ok" > /tmp/result/status
+          else
+              echo "fail" > /tmp/result/status
+          fi
+          [ -f /tmp/validate.log ] && cp /tmp/validate.log /tmp/result/log
+
+      - name: Upload result
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: result-${{ matrix.sdk }}
+          path: /tmp/result/
+          if-no-files-found: ignore
+          retention-days: 14
+
+  summary:
+    name: Validation summary
+    if: always()
+    needs: validate
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          path: results
+          pattern: result-*
+
+      - name: Build markdown table
+        run: |
+          {
+            echo "## Snippet validation summary"
+            echo
+            echo "Run: \`${{ github.run_id }}\` · Commit: \`${{ github.sha }}\`"
+            echo
+            echo "| SDK | Result | Excerpt |"
+            echo "|---|---|---|"
+            for d in results/result-*; do
+              [ -d "$d" ] || continue
+              sdk=$(basename "$d" | sed 's/^result-//')
+              status="unknown"
+              [ -f "$d/status" ] && status=$(cat "$d/status")
+              if [ "$status" = "ok" ]; then
+                  echo "| \`$sdk\` | ok | |"
+              else
+                  excerpt=""
+                  if [ -f "$d/log" ]; then
+                      excerpt=$(tail -n 50 "$d/log" \
+                        | grep -v '^$' \
+                        | tail -n 3 \
+                        | sed -e 's/|/\\|/g' -e 's/`/\\`/g' \
+                        | tr '\n' ' ')
+                  fi
+                  echo "| \`$sdk\` | **FAIL** | $excerpt |"
+              fi
+            done
+            echo
+            echo "Per-job logs are uploaded as \`result-<sdk>\` artifacts (14-day retention)."
+          } >> "$GITHUB_STEP_SUMMARY"
+
+      - name: Fail summary if any cell failed
+        run: |
+          for d in results/result-*; do
+            [ -d "$d" ] || continue
+            if [ -f "$d/status" ] && [ "$(cat "$d/status")" != "ok" ]; then
+                echo "At least one validator failed; see step summary above." >&2
+                exit 1
+            fi
+          done
diff --git a/snippets/internal/adapters/ldapplication/descriptor.go b/snippets/internal/adapters/ldapplication/descriptor.go
index 3a247cbc..541d0cc2 100644
--- a/snippets/internal/adapters/ldapplication/descriptor.go
+++ b/snippets/internal/adapters/ldapplication/descriptor.go
@@ -22,7 +22,8 @@ type descriptor struct {
 	Regions         []string       `yaml:"regions"`
 	HelloWorldRepo  string         `yaml:"hello-world-repo"`
 	LDApplication   struct {
-		GetStartedFile string `yaml:"get-started-file"`
+		GetStartedFile  string   `yaml:"get-started-file"`
+		GetStartedFiles []string `yaml:"get-started-files"`
 	} `yaml:"ld-application"`
 	Docs struct {
 		ReferencePage string `yaml:"reference-page"`
diff --git a/snippets/internal/adapters/ldapplication/ldapplication.go b/snippets/internal/adapters/ldapplication/ldapplication.go
index 2d3307cf..3766c5b0 100644
--- a/snippets/internal/adapters/ldapplication/ldapplication.go
+++ b/snippets/internal/adapters/ldapplication/ldapplication.go
@@ -92,24 +92,26 @@ func discoverTargetFiles(sdksDir, appDir string) ([]string, error) {
 			}
 			return nil, err
 		}
-		rel := desc.LDApplication.GetStartedFile
-		if rel == "" {
-			continue
-		}
-		if filepath.IsAbs(rel) {
-			return nil, fmt.Errorf("descriptor %s: get-started-file %q must be relative", descPath, rel)
-		}
-		full := filepath.Join(absAppDir, rel)
-		// Reject any path that escapes appDir. filepath.Rel followed by a
-		// `..` prefix check is the canonical way to do this.
-		relCheck, err := filepath.Rel(absAppDir, full)
-		if err != nil || relCheck == ".." || strings.HasPrefix(relCheck, ".."+string(filepath.Separator)) {
-			return nil, fmt.Errorf("descriptor %s: get-started-file %q escapes appDir", descPath, rel)
+		rels := desc.LDApplication.GetStartedFiles
+		if rel := desc.LDApplication.GetStartedFile; rel != "" {
+			rels = append([]string{rel}, rels...)
 		}
-		if _, err := os.Stat(full); err != nil {
-			return nil, fmt.Errorf("descriptor %s: target not found: %w", descPath, err)
+		for _, rel := range rels {
+			if filepath.IsAbs(rel) {
+				return nil, fmt.Errorf("descriptor %s: get-started-file %q must be relative", descPath, rel)
+			}
+			full := filepath.Join(absAppDir, rel)
+			// Reject any path that escapes appDir. filepath.Rel followed by a
+			// `..` prefix check is the canonical way to do this.
+			relCheck, err := filepath.Rel(absAppDir, full)
+			if err != nil || relCheck == ".." || strings.HasPrefix(relCheck, ".."+string(filepath.Separator)) {
+				return nil, fmt.Errorf("descriptor %s: get-started-file %q escapes appDir", descPath, rel)
+			}
+			if _, err := os.Stat(full); err != nil {
+				return nil, fmt.Errorf("descriptor %s: target not found: %w", descPath, err)
+			}
+			out = append(out, full)
 		}
-		out = append(out, full)
 	}
 	return out, nil
 }
diff --git a/snippets/internal/render/render.go b/snippets/internal/render/render.go
index 5c41b4c7..64bb8044 100644
--- a/snippets/internal/render/render.go
+++ b/snippets/internal/render/render.go
@@ -19,11 +19,12 @@ func RenderRuntime(nodes []Node, inputs map[string]string) (string, error) {
 			v, ok := inputs[x.Name]
 			if !ok {
 				// Unknown name — emit verbatim so foreign templates pass through.
-				sb.WriteString("{{ ")
-				sb.WriteString(x.Name)
-				sb.WriteString(" }}")
+				sb.WriteString(literalVar(x))
 				continue
 			}
+			if x.Filter != "" {
+				v = applyFilter(x.Filter, v)
+			}
 			sb.WriteString(v)
 		case *Cond:
 			v, ok := inputs[x.Var]
@@ -80,11 +81,18 @@ func RenderForLDApplicationTemplate(nodes []Node, declaredInputs map[string]stru
 			if _, ok := declaredInputs[x.Name]; !ok {
 				// Foreign template — emit the original `{{ name }}` literally,
 				// escaped for the surrounding template literal.
-				sb.WriteString(escapeTL("{{ " + x.Name + " }}"))
+				sb.WriteString(escapeTL(literalVar(x)))
 				continue
 			}
 			sb.WriteString("${")
-			sb.WriteString(x.Name)
+			if x.Filter != "" {
+				sb.WriteString(x.Filter)
+				sb.WriteString("(")
+				sb.WriteString(x.Name)
+				sb.WriteString(")")
+			} else {
+				sb.WriteString(x.Name)
+			}
 			sb.WriteString("}")
 		case *Cond:
 			sb.WriteString("${")
@@ -117,9 +125,7 @@ func RenderForJSXText(nodes []Node, declaredInputs map[string]struct{}) (string,
 				return "", fmt.Errorf("RenderForJSXText: template has declared interpolation; use RenderForLDApplicationTemplate")
 			}
 			// Foreign template — emit literal.
-			sb.WriteString("{{ ")
-			sb.WriteString(x.Name)
-			sb.WriteString(" }}")
+			sb.WriteString(literalVar(x))
 		case *Cond:
 			return "", fmt.Errorf("RenderForJSXText: template has conditional; use RenderForLDApplicationTemplate")
 		}
@@ -142,3 +148,66 @@ func escapeTL(s string) string {
 	s = strings.ReplaceAll(s, "${", "\\${")
 	return s
 }
+
+// literalVar formats a Var node back to its source `{{ name }}` /
+// `{{ name | filter }}` form. Used when emitting an undeclared name
+// verbatim so foreign-template syntax round-trips intact.
+func literalVar(v *Var) string {
+	if v.Filter == "" {
+		return "{{ " + v.Name + " }}"
+	}
+	return "{{ " + v.Name + " | " + v.Filter + " }}"
+}
+
+// applyFilter applies a filter to a runtime value. Today only `camelCase`
+// is supported — used by react-client-sdk's snippets where useFlags()
+// destructures camelCased identifiers from a kebab-cased flag key.
+func applyFilter(name, value string) string {
+	switch name {
+	case "camelCase":
+		return camelCase(value)
+	default:
+		return value
+	}
+}
+
+// camelCase mirrors @gonfalon/strings' camelCase. Converts kebab-case,
+// snake_case, and space-separated words to camelCase. Leading non-alpha
+// runs are stripped. The first segment stays lowercase; subsequent
+// segments get an uppercase initial.
+//
+// Examples:
+//   sample-feature  -> sampleFeature
+//   my_flag_key     -> myFlagKey
+//   already-camelOK -> alreadyCamelOk (lowercases later segments first)
+func camelCase(s string) string {
+	var segs []string
+	var cur strings.Builder
+	flush := func() {
+		if cur.Len() > 0 {
+			segs = append(segs, strings.ToLower(cur.String()))
+			cur.Reset()
+		}
+	}
+	for _, r := range s {
+		if (r >= 'a' && r <= 'z') || (r >= 'A' && r <= 'Z') || (r >= '0' && r <= '9') {
+			cur.WriteRune(r)
+			continue
+		}
+		flush()
+	}
+	flush()
+	if len(segs) == 0 {
+		return ""
+	}
+	var out strings.Builder
+	out.WriteString(segs[0])
+	for _, seg := range segs[1:] {
+		if seg == "" {
+			continue
+		}
+		out.WriteString(strings.ToUpper(seg[:1]))
+		out.WriteString(seg[1:])
+	}
+	return out.String()
+}
diff --git a/snippets/internal/render/template.go b/snippets/internal/render/template.go
index f32e43d4..d5d94717 100644
--- a/snippets/internal/render/template.go
+++ b/snippets/internal/render/template.go
@@ -9,16 +9,21 @@ import (
 // The snippet templating language is intentionally tiny:
 //
 //	{{ varName }}                substitute the value of an input
+//	{{ varName | filter }}       substitute the value with a filter applied
 //	{{ if varName }}...{{ end }} emit "..." only if the input is truthy (non-empty)
 //
 // Conditionals do not nest in the first-pass slice. The inner "..." may still
-// contain {{ varName }} substitutions. Future phases can extend this (filters,
-// region toggles, version toggles) without breaking existing snippets.
+// contain {{ varName }} substitutions. Filters supported today: `camelCase`.
+// React's snippets need the camelCase filter because `useFlags()` destructures
+// camelCased identifiers; ld-application maps these to `${camelCase(name)}`.
 
 type Node interface{ isNode() }
 
 type Literal struct{ Text string }
-type Var struct{ Name string }
+type Var struct {
+	Name   string
+	Filter string // empty if no filter; e.g. "camelCase"
+}
 type Cond struct {
 	Var  string
 	Body []Node
@@ -29,7 +34,7 @@ func (*Var) isNode()     {}
 func (*Cond) isNode()    {}
 
 var nameRe = `[a-zA-Z][a-zA-Z0-9_]*`
-var tokenRe = regexp.MustCompile(`\{\{\s*(if\s+(` + nameRe + `)\s*|end\s*|(` + nameRe + `)\s*)\}\}`)
+var tokenRe = regexp.MustCompile(`\{\{\s*(if\s+(` + nameRe + `)\s*|end\s*|(` + nameRe + `)(?:\s*\|\s*(` + nameRe + `))?\s*)\}\}`)
 
 // Parse parses the mini-templating syntax into a flat node list.
 // Conditionals are flattened: a Cond node contains its inner body.
@@ -71,9 +76,17 @@ func Parse(src string) ([]Node, error) {
 			closed := stack[len(stack)-1]
 			stack = stack[:len(stack)-1]
 			append_(closed)
-		case m[6] >= 0: // "NAME"
+		case m[6] >= 0: // "NAME" optionally followed by "| FILTER"
 			name := src[m[6]:m[7]]
-			append_(&Var{Name: name})
+			v := &Var{Name: name}
+			if m[8] >= 0 {
+				filter := src[m[8]:m[9]]
+				if filter != "camelCase" {
+					return nil, fmt.Errorf("template: unknown filter %q at offset %d (only `camelCase` is supported)", filter, start)
+				}
+				v.Filter = filter
+			}
+			append_(v)
 		default:
 			return nil, fmt.Errorf("template: unrecognized directive %q at offset %d", token, start)
 		}
diff --git a/snippets/sdks/android-client-sdk/sdk.yaml b/snippets/sdks/android-client-sdk/sdk.yaml
new file mode 100644
index 00000000..c277670f
--- /dev/null
+++ b/snippets/sdks/android-client-sdk/sdk.yaml
@@ -0,0 +1,14 @@
+id: android-client-sdk
+sdk-meta-id: android
+display-name: Android
+type: client-side
+languages:
+  - id: kotlin
+    extensions: [".kt"]
+package-managers: [gradle]
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  get-started-file: static/ld/components/getStarted/sdk/android.tsx
+docs:
+  reference-page: /sdk/client-side/android
+hello-world-repo: launchdarkly/hello-android
diff --git a/snippets/sdks/android-client-sdk/snippets/getting-started/activity-main-xml.snippet.md b/snippets/sdks/android-client-sdk/snippets/getting-started/activity-main-xml.snippet.md
new file mode 100644
index 00000000..e1ecbbf2
--- /dev/null
+++ b/snippets/sdks/android-client-sdk/snippets/getting-started/activity-main-xml.snippet.md
@@ -0,0 +1,19 @@
+---
+id: android-client-sdk/getting-started/activity-main-xml
+sdk: android-client-sdk
+kind: manifest-fragment
+lang: xml
+description: TextView fragment to add to layout/activity_main.xml.
+ld-application:
+  slot: activity-main-xml
+---
+
+Add a `TextView` to your `layout/activity_main.xml` with id `textview`:
+
+```xml
+<TextView
+  android:id="@+id/textview"
+  android:layout_width="wrap_content"
+  android:layout_height="wrap_content"
+  ... />
+```
diff --git a/snippets/sdks/android-client-sdk/snippets/getting-started/build-gradle.snippet.md b/snippets/sdks/android-client-sdk/snippets/getting-started/build-gradle.snippet.md
new file mode 100644
index 00000000..932da6fb
--- /dev/null
+++ b/snippets/sdks/android-client-sdk/snippets/getting-started/build-gradle.snippet.md
@@ -0,0 +1,23 @@
+---
+id: android-client-sdk/getting-started/build-gradle
+sdk: android-client-sdk
+kind: manifest-fragment
+lang: gradle
+description: Gradle dependency entry to drop into app/build.gradle.
+inputs:
+  version:
+    type: string
+    description: SDK version. Defaults to '5.0.0' in gonfalon as a fallback when the async fetch hasn't completed.
+    runtime-default: "5.0.0"
+ld-application:
+  slot: build-gradle
+---
+
+Add the LaunchDarkly SDK as a dependency in the `app/build.gradle` file:
+
+```gradle
+dependencies {
+  ...
+  implementation("com.launchdarkly:launchdarkly-android-client-sdk:{{ version }}")
+}
+```
diff --git a/snippets/sdks/android-client-sdk/snippets/getting-started/main-activity.snippet.md b/snippets/sdks/android-client-sdk/snippets/getting-started/main-activity.snippet.md
new file mode 100644
index 00000000..527b35bb
--- /dev/null
+++ b/snippets/sdks/android-client-sdk/snippets/getting-started/main-activity.snippet.md
@@ -0,0 +1,84 @@
+---
+id: android-client-sdk/getting-started/main-activity
+sdk: android-client-sdk
+kind: hello-world
+lang: kotlin
+file: app/src/main/java/com/launchdarkly/hello_android/MainActivity.kt
+description: MainActivity that observes the flag and renders the value.
+inputs:
+  featureKey:
+    type: flag-key
+    description: Default flag key baked into the rendered source.
+ld-application:
+  slot: main-activity
+validation:
+  runtime: android-client
+  entrypoint: app/src/main/java/com/launchdarkly/hello_android/MainActivity.kt
+  companions: [android-client-sdk/getting-started/main-application]
+---
+
+Open the file `MainActivity.kt` and add the following code:
+
+```kotlin
+package com.launchdarkly.hello_android
+
+import android.os.Bundle
+import android.view.View
+import android.widget.TextView
+import androidx.appcompat.app.AlertDialog
+import androidx.appcompat.app.AppCompatActivity
+import com.launchdarkly.hello_android.MainApplication.Companion.LAUNCHDARKLY_MOBILE_KEY
+import com.launchdarkly.sdk.android.LDClient
+
+class MainActivity : AppCompatActivity() {
+
+    // Set BOOLEAN_FLAG_KEY to the feature flag key you want to evaluate.
+    val BOOLEAN_FLAG_KEY = "{{ featureKey }}"
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+        val textView : TextView = findViewById(R.id.textview)
+        val fullView : View = window.decorView
+
+        if (LAUNCHDARKLY_MOBILE_KEY == "example-mobile-key") {
+            val builder = AlertDialog.Builder(this)
+            builder.setMessage("LAUNCHDARKLY_MOBILE_KEY was not customized for this application.")
+            builder.create().show()
+        }
+
+        val client = LDClient.get()
+        val flagValue = client.boolVariation(BOOLEAN_FLAG_KEY, false)
+
+        // to get the variation the SDK has cached
+        textView.text = getString(
+            R.string.flag_evaluated,
+            BOOLEAN_FLAG_KEY,
+            flagValue.toString()
+        )
+
+        // Style the display
+        textView.setTextColor(resources.getColor(R.color.colorText))
+        if(flagValue) {
+            fullView.setBackgroundColor(resources.getColor(R.color.colorBackgroundTrue))
+        } else {
+            fullView.setBackgroundColor(resources.getColor(R.color.colorBackgroundFalse))
+        }
+
+        // to register a listener to get updates in real time
+        client.registerFeatureFlagListener(BOOLEAN_FLAG_KEY) {
+            val changedFlagValue = client.boolVariation(BOOLEAN_FLAG_KEY, false)
+            textView.text = getString(
+                R.string.flag_evaluated,
+                BOOLEAN_FLAG_KEY,
+                changedFlagValue.toString()
+            )
+            if(changedFlagValue) {
+                fullView.setBackgroundColor(resources.getColor(R.color.colorBackgroundTrue))
+            } else {
+                fullView.setBackgroundColor(resources.getColor(R.color.colorBackgroundFalse))
+            }
+        }
+    }
+}
+```
diff --git a/snippets/sdks/android-client-sdk/snippets/getting-started/main-application.snippet.md b/snippets/sdks/android-client-sdk/snippets/getting-started/main-application.snippet.md
new file mode 100644
index 00000000..e43508e8
--- /dev/null
+++ b/snippets/sdks/android-client-sdk/snippets/getting-started/main-application.snippet.md
@@ -0,0 +1,69 @@
+---
+id: android-client-sdk/getting-started/main-application
+sdk: android-client-sdk
+kind: hello-world
+lang: kotlin
+file: app/src/main/java/com/launchdarkly/hello_android/MainApplication.kt
+description: Application subclass that initializes the LDClient on app start.
+inputs:
+  mobileKey:
+    type: mobile-key
+    description: Mobile key baked into the rendered source.
+ld-application:
+  slot: main-application
+---
+
+Create `MainApplication.kt` and add the following code:
+
+```kotlin
+package com.launchdarkly.hello_android
+
+import android.app.Application
+import com.launchdarkly.sdk.ContextKind
+import com.launchdarkly.sdk.LDContext
+import com.launchdarkly.sdk.android.LDClient
+import com.launchdarkly.sdk.android.LDConfig
+import com.launchdarkly.sdk.android.LDConfig.Builder.AutoEnvAttributes
+
+class MainApplication : Application() {
+
+    companion object {
+
+        // Set LAUNCHDARKLY_MOBILE_KEY to your LaunchDarkly SDK mobile key.
+        const val LAUNCHDARKLY_MOBILE_KEY = "{{ mobileKey }}"
+    }
+
+    override fun onCreate() {
+        super.onCreate()
+
+        // Set LAUNCHDARKLY_MOBILE_KEY to your LaunchDarkly mobile key found on the LaunchDarkly
+        // dashboard in the start guide.
+        // If you want to disable the Auto EnvironmentAttributes functionality.
+        // Use AutoEnvAttributes.Disabled as the argument to the Builder
+        val ldConfig = LDConfig.Builder(AutoEnvAttributes.Enabled)
+            .mobileKey(LAUNCHDARKLY_MOBILE_KEY)
+            .build()
+
+        // Set up the context properties. This context should appear on your LaunchDarkly context
+        // dashboard soon after you run the demo.
+        val context = if (isUserLoggedIn()) {
+            LDContext.builder(ContextKind.DEFAULT, getUserKey())
+                .name(getUserName())
+                .build()
+        } else {
+            LDContext.builder(ContextKind.DEFAULT, "example-user-key")
+                .anonymous(true)
+                .build()
+        }
+
+        LDClient.init(this@MainApplication, ldConfig, context)
+    }
+
+    private fun isUserLoggedIn(): Boolean = false
+
+    private fun getUserKey(): String = "example-user-key"
+
+    private fun getUserName(): String = "Sandy"
+
+}
+```
diff --git a/snippets/sdks/android-client-sdk/snippets/getting-started/manifest.snippet.md b/snippets/sdks/android-client-sdk/snippets/getting-started/manifest.snippet.md
new file mode 100644
index 00000000..3c9b82e6
--- /dev/null
+++ b/snippets/sdks/android-client-sdk/snippets/getting-started/manifest.snippet.md
@@ -0,0 +1,23 @@
+---
+id: android-client-sdk/getting-started/manifest
+sdk: android-client-sdk
+kind: manifest-fragment
+lang: xml
+description: AndroidManifest.xml fragment registering MainApplication.
+ld-application:
+  slot: manifest
+---
+
+Register the `MainApplication` class in the `AndroidManifest.xml`:
+
+```xml
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+  xmlns:tools="http://schemas.android.com/tools">
+
+  <application
+    android:name=".MainApplication"
+    ...
+    ...
+  </application>
+</manifest>
+```
diff --git a/snippets/sdks/cpp-client-sdk/sdk.yaml b/snippets/sdks/cpp-client-sdk/sdk.yaml
new file mode 100644
index 00000000..cd966ccb
--- /dev/null
+++ b/snippets/sdks/cpp-client-sdk/sdk.yaml
@@ -0,0 +1,14 @@
+id: cpp-client-sdk
+sdk-meta-id: cpp-client
+display-name: C++ (client-side)
+type: client-side
+languages:
+  - id: cpp
+    extensions: [".cpp", ".h", ".hpp"]
+package-managers: [cmake]
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  get-started-file: static/ld/components/getStarted/sdk/cppClient.tsx
+docs:
+  reference-page: /sdk/client-side/c-c--
+hello-world-repo: launchdarkly/cpp-sdks
diff --git a/snippets/sdks/cpp-client-sdk/snippets/getting-started/build-mkdir.snippet.md b/snippets/sdks/cpp-client-sdk/snippets/getting-started/build-mkdir.snippet.md
new file mode 100644
index 00000000..e9bb45dc
--- /dev/null
+++ b/snippets/sdks/cpp-client-sdk/snippets/getting-started/build-mkdir.snippet.md
@@ -0,0 +1,15 @@
+---
+id: cpp-client-sdk/getting-started/build-mkdir
+sdk: cpp-client-sdk
+kind: bootstrap
+lang: bash
+description: Create the CMake build directory.
+ld-application:
+  slot: build-mkdir
+---
+
+Create a build directory:
+
+```bash
+mkdir build && cd build
+```
diff --git a/snippets/sdks/cpp-client-sdk/snippets/getting-started/clone-sdk.snippet.md b/snippets/sdks/cpp-client-sdk/snippets/getting-started/clone-sdk.snippet.md
new file mode 100644
index 00000000..7486068c
--- /dev/null
+++ b/snippets/sdks/cpp-client-sdk/snippets/getting-started/clone-sdk.snippet.md
@@ -0,0 +1,15 @@
+---
+id: cpp-client-sdk/getting-started/clone-sdk
+sdk: cpp-client-sdk
+kind: install
+lang: bash
+description: Clone the C++ SDK repo into the project directory.
+ld-application:
+  slot: clone-sdk
+---
+
+Clone the C++ SDK inside the directory you created above using git:
+
+```bash
+git clone https://github.com/launchdarkly/cpp-sdks.git
+```
diff --git a/snippets/sdks/cpp-client-sdk/snippets/getting-started/cmake-build.snippet.md b/snippets/sdks/cpp-client-sdk/snippets/getting-started/cmake-build.snippet.md
new file mode 100644
index 00000000..e2473335
--- /dev/null
+++ b/snippets/sdks/cpp-client-sdk/snippets/getting-started/cmake-build.snippet.md
@@ -0,0 +1,15 @@
+---
+id: cpp-client-sdk/getting-started/cmake-build
+sdk: cpp-client-sdk
+kind: install
+lang: bash
+description: Build the SDK and project.
+ld-application:
+  slot: cmake-build
+---
+
+Build the SDK:
+
+```bash
+cmake --build .
+```
diff --git a/snippets/sdks/cpp-client-sdk/snippets/getting-started/cmake-make.snippet.md b/snippets/sdks/cpp-client-sdk/snippets/getting-started/cmake-make.snippet.md
new file mode 100644
index 00000000..93bed588
--- /dev/null
+++ b/snippets/sdks/cpp-client-sdk/snippets/getting-started/cmake-make.snippet.md
@@ -0,0 +1,13 @@
+---
+id: cpp-client-sdk/getting-started/cmake-make
+sdk: cpp-client-sdk
+kind: bootstrap
+lang: bash
+description: Configure with the Make generator.
+ld-application:
+  slot: cmake-make
+---
+
+```bash
+cmake -G"Unix Makefiles" -DBUILD_TESTING=OFF ..
+```
diff --git a/snippets/sdks/cpp-client-sdk/snippets/getting-started/cmake-msvc.snippet.md b/snippets/sdks/cpp-client-sdk/snippets/getting-started/cmake-msvc.snippet.md
new file mode 100644
index 00000000..9cfb2044
--- /dev/null
+++ b/snippets/sdks/cpp-client-sdk/snippets/getting-started/cmake-msvc.snippet.md
@@ -0,0 +1,13 @@
+---
+id: cpp-client-sdk/getting-started/cmake-msvc
+sdk: cpp-client-sdk
+kind: bootstrap
+lang: bash
+description: Configure with Visual Studio 2022.
+ld-application:
+  slot: cmake-msvc
+---
+
+```bash
+cmake -G"Visual Studio 17 2022" -DBUILD_TESTING=OFF ..
+```
diff --git a/snippets/sdks/cpp-client-sdk/snippets/getting-started/cmake-ninja.snippet.md b/snippets/sdks/cpp-client-sdk/snippets/getting-started/cmake-ninja.snippet.md
new file mode 100644
index 00000000..0438afa7
--- /dev/null
+++ b/snippets/sdks/cpp-client-sdk/snippets/getting-started/cmake-ninja.snippet.md
@@ -0,0 +1,13 @@
+---
+id: cpp-client-sdk/getting-started/cmake-ninja
+sdk: cpp-client-sdk
+kind: bootstrap
+lang: bash
+description: Configure with the Ninja generator.
+ld-application:
+  slot: cmake-ninja
+---
+
+```bash
+cmake -G"Ninja" -DBUILD_TESTING=OFF ..
+```
diff --git a/snippets/sdks/cpp-client-sdk/snippets/getting-started/cmakelists.snippet.md b/snippets/sdks/cpp-client-sdk/snippets/getting-started/cmakelists.snippet.md
new file mode 100644
index 00000000..4581b91b
--- /dev/null
+++ b/snippets/sdks/cpp-client-sdk/snippets/getting-started/cmakelists.snippet.md
@@ -0,0 +1,37 @@
+---
+id: cpp-client-sdk/getting-started/cmakelists
+sdk: cpp-client-sdk
+kind: manifest
+lang: text
+file: CMakeLists.txt
+description: CMake configuration for the hello-cpp-client project.
+ld-application:
+  slot: cmakelists
+---
+
+Create a `CMakeLists.txt` file with the following content:
+
+```text
+cmake_minimum_required(VERSION 3.19)
+
+project(
+  CPPClientQuickstart
+  VERSION 0.1
+  DESCRIPTION "LaunchDarkly CPP Client-side SDK Quickstart"
+  LANGUAGES CXX
+)
+
+set(THREADS_PREFER_PTHREAD_FLAG ON)
+find_package(Threads REQUIRED)
+
+add_subdirectory(cpp-sdks)
+
+add_executable(cpp-client-quickstart main.cpp)
+
+target_link_libraries(cpp-client-quickstart
+      PRIVATE
+        launchdarkly::client
+        Threads::Threads
+)
+        
+```
diff --git a/snippets/sdks/cpp-client-sdk/snippets/getting-started/main-cpp.snippet.md b/snippets/sdks/cpp-client-sdk/snippets/getting-started/main-cpp.snippet.md
new file mode 100644
index 00000000..e2662b17
--- /dev/null
+++ b/snippets/sdks/cpp-client-sdk/snippets/getting-started/main-cpp.snippet.md
@@ -0,0 +1,75 @@
+---
+id: cpp-client-sdk/getting-started/main-cpp
+sdk: cpp-client-sdk
+kind: hello-world
+lang: cpp
+file: main.cpp
+description: Hello-world program that initializes the C++ client SDK and evaluates a feature flag.
+inputs:
+  mobileKey:
+    type: mobile-key
+    description: Mobile key baked into the rendered source.
+  featureKey:
+    type: flag-key
+    description: Default flag key baked into the rendered source.
+ld-application:
+  slot: main-cpp
+validation:
+  runtime: cpp-client
+  entrypoint: main.cpp
+---
+
+Create a file named `main.cpp` add the following code:
+
+```cpp
+#include <launchdarkly/client_side/client.hpp>
+#include <launchdarkly/context_builder.hpp>
+
+#include <cstring>
+#include <iostream>
+
+// Set INIT_TIMEOUT_MILLISECONDS to the amount of time you will wait for
+// the client to become initialized.
+#define INIT_TIMEOUT_MILLISECONDS 3000
+
+using namespace launchdarkly;
+using namespace launchdarkly::client_side;
+
+int main() {
+
+    auto config = ConfigBuilder("{{ mobileKey }}").Build();
+    if (!config) {
+        std::cout << "error: config is invalid: " << config.error() << std::endl;
+        return 1;
+    }
+
+    auto context =
+        ContextBuilder().Kind("user", "example-user-key").Name("Sandy").Build();
+
+    auto client = Client(std::move(*config), std::move(context));
+
+    auto start_result = client.StartAsync();
+
+    if (auto const status = start_result.wait_for(
+            std::chrono::milliseconds(INIT_TIMEOUT_MILLISECONDS));
+        status == std::future_status::ready) {
+        if (start_result.get()) {
+            std::cout << "*** SDK successfully initialized!" << std::endl;
+        } else {
+            std::cout << "*** SDK failed to initialize" << std::endl;
+            return 1;
+        }
+    } else {
+        std::cout << "*** SDK initialization didn't complete in "
+                  << INIT_TIMEOUT_MILLISECONDS << "ms" << std::endl;
+        return 1;
+    }
+
+    bool const flag_value = client.BoolVariation("{{ featureKey }}", false);
+
+    std::cout << "*** The '{{ featureKey }}' feature flag evaluates to "
+              << (flag_value ? "true" : "false") << "." << std::endl;
+
+    return 0;
+}
+```
diff --git a/snippets/sdks/cpp-client-sdk/snippets/getting-started/mkdir.snippet.md b/snippets/sdks/cpp-client-sdk/snippets/getting-started/mkdir.snippet.md
new file mode 100644
index 00000000..1a404b08
--- /dev/null
+++ b/snippets/sdks/cpp-client-sdk/snippets/getting-started/mkdir.snippet.md
@@ -0,0 +1,15 @@
+---
+id: cpp-client-sdk/getting-started/mkdir
+sdk: cpp-client-sdk
+kind: bootstrap
+lang: bash
+description: Create the project directory.
+ld-application:
+  slot: mkdir
+---
+
+Create a new project directory:
+
+```bash
+mkdir hello-cpp-client && cd hello-cpp-client
+```
diff --git a/snippets/sdks/cpp-client-sdk/snippets/getting-started/run.snippet.md b/snippets/sdks/cpp-client-sdk/snippets/getting-started/run.snippet.md
new file mode 100644
index 00000000..f12c72f5
--- /dev/null
+++ b/snippets/sdks/cpp-client-sdk/snippets/getting-started/run.snippet.md
@@ -0,0 +1,15 @@
+---
+id: cpp-client-sdk/getting-started/run
+sdk: cpp-client-sdk
+kind: run
+lang: bash
+description: Run the built binary.
+ld-application:
+  slot: run
+---
+
+Run:
+
+```bash
+./cpp-client-quickstart
+```
diff --git a/snippets/sdks/cpp-server-sdk/sdk.yaml b/snippets/sdks/cpp-server-sdk/sdk.yaml
new file mode 100644
index 00000000..86710bd8
--- /dev/null
+++ b/snippets/sdks/cpp-server-sdk/sdk.yaml
@@ -0,0 +1,14 @@
+id: cpp-server-sdk
+sdk-meta-id: cpp-server
+display-name: C++ (server-side)
+type: server-side
+languages:
+  - id: cpp
+    extensions: [".cpp", ".h", ".hpp"]
+package-managers: [cmake]
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  get-started-file: static/ld/components/getStarted/sdk/cppServer.tsx
+docs:
+  reference-page: /sdk/server-side/c-c--
+hello-world-repo: launchdarkly/cpp-sdks
diff --git a/snippets/sdks/cpp-server-sdk/snippets/getting-started/build-mkdir.snippet.md b/snippets/sdks/cpp-server-sdk/snippets/getting-started/build-mkdir.snippet.md
new file mode 100644
index 00000000..fe98206d
--- /dev/null
+++ b/snippets/sdks/cpp-server-sdk/snippets/getting-started/build-mkdir.snippet.md
@@ -0,0 +1,15 @@
+---
+id: cpp-server-sdk/getting-started/build-mkdir
+sdk: cpp-server-sdk
+kind: bootstrap
+lang: bash
+description: Create the CMake build directory.
+ld-application:
+  slot: build-mkdir
+---
+
+Create a build directory:
+
+```bash
+mkdir build && cd build
+```
diff --git a/snippets/sdks/cpp-server-sdk/snippets/getting-started/clone-sdk.snippet.md b/snippets/sdks/cpp-server-sdk/snippets/getting-started/clone-sdk.snippet.md
new file mode 100644
index 00000000..5b3ccb95
--- /dev/null
+++ b/snippets/sdks/cpp-server-sdk/snippets/getting-started/clone-sdk.snippet.md
@@ -0,0 +1,15 @@
+---
+id: cpp-server-sdk/getting-started/clone-sdk
+sdk: cpp-server-sdk
+kind: install
+lang: shell
+description: Clone the C++ SDK repo into the project directory.
+ld-application:
+  slot: clone-sdk
+---
+
+Clone the C++ SDK inside the directory you created above using git:
+
+```shell
+git clone https://github.com/launchdarkly/cpp-sdks.git
+```
diff --git a/snippets/sdks/cpp-server-sdk/snippets/getting-started/cmake-build.snippet.md b/snippets/sdks/cpp-server-sdk/snippets/getting-started/cmake-build.snippet.md
new file mode 100644
index 00000000..2814c8c2
--- /dev/null
+++ b/snippets/sdks/cpp-server-sdk/snippets/getting-started/cmake-build.snippet.md
@@ -0,0 +1,15 @@
+---
+id: cpp-server-sdk/getting-started/cmake-build
+sdk: cpp-server-sdk
+kind: install
+lang: bash
+description: Build the SDK and project.
+ld-application:
+  slot: cmake-build
+---
+
+Build the SDK:
+
+```bash
+cmake --build .
+```
diff --git a/snippets/sdks/cpp-server-sdk/snippets/getting-started/cmake-make.snippet.md b/snippets/sdks/cpp-server-sdk/snippets/getting-started/cmake-make.snippet.md
new file mode 100644
index 00000000..f800ffd6
--- /dev/null
+++ b/snippets/sdks/cpp-server-sdk/snippets/getting-started/cmake-make.snippet.md
@@ -0,0 +1,13 @@
+---
+id: cpp-server-sdk/getting-started/cmake-make
+sdk: cpp-server-sdk
+kind: bootstrap
+lang: bash
+description: Configure with the Make generator.
+ld-application:
+  slot: cmake-make
+---
+
+```bash
+cmake -G"Unix Makefiles" -DBUILD_TESTING=OFF ..
+```
diff --git a/snippets/sdks/cpp-server-sdk/snippets/getting-started/cmake-msvc.snippet.md b/snippets/sdks/cpp-server-sdk/snippets/getting-started/cmake-msvc.snippet.md
new file mode 100644
index 00000000..1d58e627
--- /dev/null
+++ b/snippets/sdks/cpp-server-sdk/snippets/getting-started/cmake-msvc.snippet.md
@@ -0,0 +1,13 @@
+---
+id: cpp-server-sdk/getting-started/cmake-msvc
+sdk: cpp-server-sdk
+kind: bootstrap
+lang: bash
+description: Configure with Visual Studio 2022.
+ld-application:
+  slot: cmake-msvc
+---
+
+```bash
+cmake -G"Visual Studio 17 2022" -DBUILD_TESTING=OFF ..
+```
diff --git a/snippets/sdks/cpp-server-sdk/snippets/getting-started/cmake-ninja.snippet.md b/snippets/sdks/cpp-server-sdk/snippets/getting-started/cmake-ninja.snippet.md
new file mode 100644
index 00000000..28919f1c
--- /dev/null
+++ b/snippets/sdks/cpp-server-sdk/snippets/getting-started/cmake-ninja.snippet.md
@@ -0,0 +1,13 @@
+---
+id: cpp-server-sdk/getting-started/cmake-ninja
+sdk: cpp-server-sdk
+kind: bootstrap
+lang: bash
+description: Configure with the Ninja generator.
+ld-application:
+  slot: cmake-ninja
+---
+
+```bash
+cmake -G"Ninja" -DBUILD_TESTING=OFF ..
+```
diff --git a/snippets/sdks/cpp-server-sdk/snippets/getting-started/cmakelists.snippet.md b/snippets/sdks/cpp-server-sdk/snippets/getting-started/cmakelists.snippet.md
new file mode 100644
index 00000000..7a488871
--- /dev/null
+++ b/snippets/sdks/cpp-server-sdk/snippets/getting-started/cmakelists.snippet.md
@@ -0,0 +1,37 @@
+---
+id: cpp-server-sdk/getting-started/cmakelists
+sdk: cpp-server-sdk
+kind: manifest
+lang: cpp
+file: CMakeLists.txt
+description: CMake configuration file for the hello-cpp-server project.
+ld-application:
+  slot: cmakelists
+---
+
+Create a `CMakeLists.txt` file with the following content:
+
+```cpp
+cmake_minimum_required(VERSION 3.19)
+
+project(
+  CPPServerQuickstart
+  VERSION 0.1
+  DESCRIPTION "LaunchDarkly CPP Server-side SDK Quickstart"
+  LANGUAGES CXX
+)
+
+set(THREADS_PREFER_PTHREAD_FLAG ON)
+find_package(Threads REQUIRED)
+
+add_subdirectory(cpp-sdks)
+
+add_executable(cpp-server-quickstart main.cpp)
+
+target_link_libraries(cpp-server-quickstart
+      PRIVATE
+        launchdarkly::server
+        Threads::Threads
+)
+        
+```
diff --git a/snippets/sdks/cpp-server-sdk/snippets/getting-started/main-cpp.snippet.md b/snippets/sdks/cpp-server-sdk/snippets/getting-started/main-cpp.snippet.md
new file mode 100644
index 00000000..350ca092
--- /dev/null
+++ b/snippets/sdks/cpp-server-sdk/snippets/getting-started/main-cpp.snippet.md
@@ -0,0 +1,76 @@
+---
+id: cpp-server-sdk/getting-started/main-cpp
+sdk: cpp-server-sdk
+kind: hello-world
+lang: cpp
+file: main.cpp
+description: Hello-world program that initializes the C++ server SDK and evaluates a feature flag.
+inputs:
+  apiKey:
+    type: sdk-key
+    description: SDK key baked into the rendered source.
+  featureKey:
+    type: flag-key
+    description: Default flag key baked into the rendered source.
+ld-application:
+  slot: main-cpp
+validation:
+  runtime: cpp-server
+  entrypoint: main.cpp
+---
+
+Create a file named `main.cpp` add the following code:
+
+```cpp
+#include <launchdarkly/context_builder.hpp>
+#include <launchdarkly/server_side/client.hpp>
+#include <launchdarkly/server_side/config/config_builder.hpp>
+
+#include <cstring>
+#include <iostream>
+
+// Set INIT_TIMEOUT_MILLISECONDS to the amount of time you will wait for
+// the client to become initialized.
+#define INIT_TIMEOUT_MILLISECONDS 3000
+
+using namespace launchdarkly;
+using namespace launchdarkly::server_side;
+
+int main() {
+    auto config = ConfigBuilder("{{ apiKey }}").Build();
+    if (!config) {
+        std::cout << "error: config is invalid: " << config.error() << std::endl;
+        return 1;
+    }
+
+    auto client = Client(std::move(*config));
+
+    auto start_result = client.StartAsync();
+
+    if (auto const status = start_result.wait_for(
+            std::chrono::milliseconds(INIT_TIMEOUT_MILLISECONDS));
+        status == std::future_status::ready) {
+        if (start_result.get()) {
+            std::cout << "*** SDK successfully initialized!" << std::endl;
+        } else {
+            std::cout << "*** SDK failed to initialize" << std::endl;
+            return 1;
+        }
+    } else {
+        std::cout << "*** SDK initialization didn't complete in "
+                  << INIT_TIMEOUT_MILLISECONDS << "ms" << std::endl;
+        return 1;
+    }
+
+    auto const context =
+        ContextBuilder().Kind("user", "example-user-key").Name("Sandy").Build();
+
+    bool const flag_value =
+        client.BoolVariation(context, "{{ featureKey }}", false);
+
+    std::cout << "*** The '{{ featureKey }}' feature flag evaluates to "
+              << (flag_value ? "true" : "false") << "." << std::endl;
+
+    return 0;
+}
+```
diff --git a/snippets/sdks/cpp-server-sdk/snippets/getting-started/mkdir.snippet.md b/snippets/sdks/cpp-server-sdk/snippets/getting-started/mkdir.snippet.md
new file mode 100644
index 00000000..55463d97
--- /dev/null
+++ b/snippets/sdks/cpp-server-sdk/snippets/getting-started/mkdir.snippet.md
@@ -0,0 +1,15 @@
+---
+id: cpp-server-sdk/getting-started/mkdir
+sdk: cpp-server-sdk
+kind: bootstrap
+lang: shell
+description: Create the project directory.
+ld-application:
+  slot: mkdir
+---
+
+Create a new project directory:
+
+```shell
+mkdir hello-cpp-server && cd hello-cpp-server
+```
diff --git a/snippets/sdks/cpp-server-sdk/snippets/getting-started/run.snippet.md b/snippets/sdks/cpp-server-sdk/snippets/getting-started/run.snippet.md
new file mode 100644
index 00000000..899d43bb
--- /dev/null
+++ b/snippets/sdks/cpp-server-sdk/snippets/getting-started/run.snippet.md
@@ -0,0 +1,16 @@
+---
+id: cpp-server-sdk/getting-started/run
+sdk: cpp-server-sdk
+kind: run
+lang: bash
+description: Run the built binary.
+ld-application:
+  slot: run
+---
+
+Run:
+
+```bash
+./cpp-server-quickstart
+
+```
diff --git a/snippets/sdks/dotnet-client-sdk/sdk.yaml b/snippets/sdks/dotnet-client-sdk/sdk.yaml
new file mode 100644
index 00000000..850af30f
--- /dev/null
+++ b/snippets/sdks/dotnet-client-sdk/sdk.yaml
@@ -0,0 +1,14 @@
+id: dotnet-client-sdk
+sdk-meta-id: dotnet-client
+display-name: .NET (client-side)
+type: client-side
+languages:
+  - id: csharp
+    extensions: [".cs"]
+package-managers: [nuget]
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  get-started-file: static/ld/components/getStarted/sdk/dotnetClient.tsx
+docs:
+  reference-page: /sdk/client-side/dotnet
+hello-world-repo: launchdarkly/hello-dotnet-client
diff --git a/snippets/sdks/dotnet-client-sdk/snippets/getting-started/dotnet-new.snippet.md b/snippets/sdks/dotnet-client-sdk/snippets/getting-started/dotnet-new.snippet.md
new file mode 100644
index 00000000..ad8bbd2a
--- /dev/null
+++ b/snippets/sdks/dotnet-client-sdk/snippets/getting-started/dotnet-new.snippet.md
@@ -0,0 +1,15 @@
+---
+id: dotnet-client-sdk/getting-started/dotnet-new
+sdk: dotnet-client-sdk
+kind: bootstrap
+lang: shell
+description: Create a new .NET console application.
+ld-application:
+  slot: dotnet-new
+---
+
+Next, create a new console application:
+
+```shell
+dotnet new console
+```
diff --git a/snippets/sdks/dotnet-client-sdk/snippets/getting-started/install.snippet.md b/snippets/sdks/dotnet-client-sdk/snippets/getting-started/install.snippet.md
new file mode 100644
index 00000000..d5aa58f8
--- /dev/null
+++ b/snippets/sdks/dotnet-client-sdk/snippets/getting-started/install.snippet.md
@@ -0,0 +1,15 @@
+---
+id: dotnet-client-sdk/getting-started/install
+sdk: dotnet-client-sdk
+kind: install
+lang: shell
+description: Add the LaunchDarkly client SDK as a dependency.
+ld-application:
+  slot: install
+---
+
+Next, add the LaunchDarkly dependency to the project:
+
+```shell
+dotnet add package Launchdarkly.ClientSdk
+```
diff --git a/snippets/sdks/dotnet-client-sdk/snippets/getting-started/mkdir.snippet.md b/snippets/sdks/dotnet-client-sdk/snippets/getting-started/mkdir.snippet.md
new file mode 100644
index 00000000..1eff91ce
--- /dev/null
+++ b/snippets/sdks/dotnet-client-sdk/snippets/getting-started/mkdir.snippet.md
@@ -0,0 +1,16 @@
+---
+id: dotnet-client-sdk/getting-started/mkdir
+sdk: dotnet-client-sdk
+kind: bootstrap
+lang: shell
+description: Create the project directory.
+ld-application:
+  slot: mkdir
+---
+
+Create a new folder for your project:
+
+```shell
+mkdir HelloDotNetClient
+cd HelloDotNetClient
+```
diff --git a/snippets/sdks/dotnet-client-sdk/snippets/getting-started/program-cs.snippet.md b/snippets/sdks/dotnet-client-sdk/snippets/getting-started/program-cs.snippet.md
new file mode 100644
index 00000000..1124862a
--- /dev/null
+++ b/snippets/sdks/dotnet-client-sdk/snippets/getting-started/program-cs.snippet.md
@@ -0,0 +1,56 @@
+---
+id: dotnet-client-sdk/getting-started/program-cs
+sdk: dotnet-client-sdk
+kind: hello-world
+lang: csharp
+file: Program.cs
+description: Hello-world program that initializes the .NET client SDK and evaluates a feature flag.
+inputs:
+  mobileKey:
+    type: mobile-key
+    description: Mobile key baked into the rendered source. Validation reads LAUNCHDARKLY_MOBILE_KEY at runtime.
+  featureKey:
+    type: flag-key
+    description: Default flag key baked into the rendered source. Validation reads LAUNCHDARKLY_FLAG_KEY at runtime.
+ld-application:
+  slot: program-cs
+validation:
+  runtime: dotnet-client
+  requirements: Launchdarkly.ClientSdk
+---
+
+Open the file `Program.cs` and add the following code:
+
+```csharp
+using LaunchDarkly.Sdk;
+using LaunchDarkly.Sdk.Client;
+
+var context = Context.New("example-user-key");
+var timeSpan = TimeSpan.FromSeconds(10);
+var client = LdClient.Init(
+  Configuration.Default("{{ mobileKey }}", ConfigurationBuilder.AutoEnvAttributes.Enabled),
+  context,
+  timeSpan
+);
+
+if (client.Initialized)
+{
+    Console.WriteLine("SDK successfully initialized!");
+}
+else
+{
+    Console.WriteLine("SDK failed to initialize");
+    Environment.Exit(1);
+}
+
+var flagValue = client.BoolVariation("{{ featureKey }}", false);
+
+Console.WriteLine(string.Format("The '{{ featureKey }}' feature flag evaluates to {0}.", flagValue));
+
+// Here we ensure that the SDK shuts down cleanly and has a chance to deliver analytics
+// events to LaunchDarkly before the program exits. If analytics events are not delivered,
+// the context properties and flag usage statistics will not appear on your dashboard. In
+// a normal long-running application, the SDK would continue running and events would be
+// delivered automatically in the background.
+client.Dispose();
+```
diff --git a/snippets/sdks/dotnet-client-sdk/snippets/getting-started/run.snippet.md b/snippets/sdks/dotnet-client-sdk/snippets/getting-started/run.snippet.md
new file mode 100644
index 00000000..e00f1a46
--- /dev/null
+++ b/snippets/sdks/dotnet-client-sdk/snippets/getting-started/run.snippet.md
@@ -0,0 +1,15 @@
+---
+id: dotnet-client-sdk/getting-started/run
+sdk: dotnet-client-sdk
+kind: run
+lang: shell
+description: Run the program.
+ld-application:
+  slot: run
+---
+
+Use the following command to run the code:
+
+```shell
+dotnet run
+```
diff --git a/snippets/sdks/dotnet-server-sdk/sdk.yaml b/snippets/sdks/dotnet-server-sdk/sdk.yaml
new file mode 100644
index 00000000..46cf7ca1
--- /dev/null
+++ b/snippets/sdks/dotnet-server-sdk/sdk.yaml
@@ -0,0 +1,14 @@
+id: dotnet-server-sdk
+sdk-meta-id: dotnet-server
+display-name: .NET (server-side)
+type: server-side
+languages:
+  - id: csharp
+    extensions: [".cs"]
+package-managers: [nuget]
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  get-started-file: static/ld/components/getStarted/sdk/dotnet.tsx
+docs:
+  reference-page: /sdk/server-side/dotnet
+hello-world-repo: launchdarkly/hello-dotnet-server
diff --git a/snippets/sdks/dotnet-server-sdk/snippets/getting-started/install.snippet.md b/snippets/sdks/dotnet-server-sdk/snippets/getting-started/install.snippet.md
new file mode 100644
index 00000000..bb14a5b9
--- /dev/null
+++ b/snippets/sdks/dotnet-server-sdk/snippets/getting-started/install.snippet.md
@@ -0,0 +1,15 @@
+---
+id: dotnet-server-sdk/getting-started/install
+sdk: dotnet-server-sdk
+kind: install
+lang: powershell
+description: Install the LaunchDarkly server SDK via NuGet.
+ld-application:
+  slot: install
+---
+
+Next, install the LaunchDarkly SDK using [NuGet](http://docs.nuget.org/docs/start-here/using-the-package-manager-console):
+
+```powershell
+Install-Package LaunchDarkly.ServerSdk
+```
diff --git a/snippets/sdks/dotnet-server-sdk/snippets/getting-started/program-cs.snippet.md b/snippets/sdks/dotnet-server-sdk/snippets/getting-started/program-cs.snippet.md
new file mode 100644
index 00000000..c5e7fa1f
--- /dev/null
+++ b/snippets/sdks/dotnet-server-sdk/snippets/getting-started/program-cs.snippet.md
@@ -0,0 +1,115 @@
+---
+id: dotnet-server-sdk/getting-started/program-cs
+sdk: dotnet-server-sdk
+kind: hello-world
+lang: csharp
+file: Program.cs
+description: Hello-world program that initializes the .NET server SDK and watches a feature flag.
+inputs:
+  featureKey:
+    type: flag-key
+    description: Default flag key baked into the rendered source. Validation reads LAUNCHDARKLY_FLAG_KEY at runtime.
+ld-application:
+  slot: program-cs
+validation:
+  runtime: dotnet-server
+  requirements: LaunchDarkly.ServerSdk
+---
+
+Open the file `Program.cs` and add the following code:
+
+```csharp
+using System;
+  using System.Threading.Tasks;
+  using LaunchDarkly.Sdk;
+  using LaunchDarkly.Sdk.Server;
+
+  namespace HelloDotNet
+  {
+      class Hello
+      {
+          public static void ShowBanner(){
+              Console.WriteLine(
+  @"            ██
+            ██
+        ████████
+           ███████
+  ██ LAUNCHDARKLY █
+           ███████
+        ████████
+            ██
+          ██
+  ");
+          }
+
+          static void Main(string[] args)
+          {
+              bool CI = Environment.GetEnvironmentVariable("CI") != null;
+
+              string SdkKey = Environment.GetEnvironmentVariable("LAUNCHDARKLY_SDK_KEY");
+
+              // Set FeatureFlagKey to the feature flag key you want to evaluate.
+              string FeatureFlagKey = "{{ featureKey }}";
+
+              if (string.IsNullOrEmpty(SdkKey))
+              {
+                  Console.WriteLine("*** Please set LAUNCHDARKLY_SDK_KEY environment variable to your LaunchDarkly SDK key first\n");
+                  Environment.Exit(1);
+              }
+
+              var ldConfig = Configuration.Default(SdkKey);
+
+              var client = new LdClient(ldConfig);
+
+              if (client.Initialized)
+              {
+                  Console.WriteLine("*** SDK successfully initialized!\n");
+              }
+              else
+              {
+                  Console.WriteLine("*** SDK failed to initialize\n");
+                  Environment.Exit(1);
+              }
+
+              // Set up the evaluation context. This context should appear on your LaunchDarkly contexts
+              // dashboard soon after you run the demo.
+              var context = Context.Builder("example-user-key")
+                  .Name("Sandy")
+                  .Build();
+
+              if (Environment.GetEnvironmentVariable("LAUNCHDARKLY_FLAG_KEY") != null)
+              {
+                  FeatureFlagKey = Environment.GetEnvironmentVariable("LAUNCHDARKLY_FLAG_KEY");
+              }
+
+              var flagValue = client.BoolVariation(FeatureFlagKey, context, false);
+
+              Console.WriteLine(string.Format("*** The {0} feature flag evaluates to {1}.\n",
+                  FeatureFlagKey, flagValue));
+
+              if (flagValue)
+              {
+                  ShowBanner();
+              }
+
+              client.FlagTracker.FlagChanged += client.FlagTracker.FlagValueChangeHandler(
+                  FeatureFlagKey,
+                  context,
+                  (sender, changeArgs) => {
+                      Console.WriteLine(string.Format("*** The {0} feature flag evaluates to {1}.\n",
+                      FeatureFlagKey, changeArgs.NewValue));
+
+                      if (changeArgs.NewValue.AsBool) ShowBanner();
+                  }
+              );
+
+              if(CI) Environment.Exit(0);
+
+              Console.WriteLine("*** Waiting for changes \n");
+
+              Task waitForever = new Task(() => {});
+              waitForever.Wait();
+          }
+      }
+  }
+```
diff --git a/snippets/sdks/dotnet-server-sdk/snippets/getting-started/run.snippet.md b/snippets/sdks/dotnet-server-sdk/snippets/getting-started/run.snippet.md
new file mode 100644
index 00000000..a9fe6f91
--- /dev/null
+++ b/snippets/sdks/dotnet-server-sdk/snippets/getting-started/run.snippet.md
@@ -0,0 +1,19 @@
+---
+id: dotnet-server-sdk/getting-started/run
+sdk: dotnet-server-sdk
+kind: run
+lang: shell
+description: Run with dotnet from the command line.
+inputs:
+  apiKey:
+    type: sdk-key
+    description: SDK key embedded in the rendered Run command.
+ld-application:
+  slot: run
+---
+
+Run from the command line:
+
+```shell
+LAUNCHDARKLY_SDK_KEY={{ apiKey }} dotnet run --project HelloDotNet
+```
diff --git a/snippets/sdks/erlang-server-sdk/sdk.yaml b/snippets/sdks/erlang-server-sdk/sdk.yaml
new file mode 100644
index 00000000..cf2ab953
--- /dev/null
+++ b/snippets/sdks/erlang-server-sdk/sdk.yaml
@@ -0,0 +1,14 @@
+id: erlang-server-sdk
+sdk-meta-id: erlang
+display-name: Erlang
+type: server-side
+languages:
+  - id: erlang
+    extensions: [".erl"]
+package-managers: [rebar3]
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  get-started-file: static/ld/components/getStarted/sdk/erlang.tsx
+docs:
+  reference-page: /sdk/server-side/erlang
+hello-world-repo: launchdarkly/hello-erlang
diff --git a/snippets/sdks/erlang-server-sdk/snippets/getting-started/app-src.snippet.md b/snippets/sdks/erlang-server-sdk/snippets/getting-started/app-src.snippet.md
new file mode 100644
index 00000000..a52a673f
--- /dev/null
+++ b/snippets/sdks/erlang-server-sdk/snippets/getting-started/app-src.snippet.md
@@ -0,0 +1,19 @@
+---
+id: erlang-server-sdk/getting-started/app-src
+sdk: erlang-server-sdk
+kind: manifest-fragment
+lang: erlang
+description: applications block to add to src/hello_erlang.app.src.
+ld-application:
+  slot: app-src
+---
+
+Edit `src/hello_erlang.app.src` to import LaunchDarkly:
+
+```erlang
+{applications,
+	[kernel,
+	stdlib,
+	ldclient
+]},
+```
diff --git a/snippets/sdks/erlang-server-sdk/snippets/getting-started/rebar-config.snippet.md b/snippets/sdks/erlang-server-sdk/snippets/getting-started/rebar-config.snippet.md
new file mode 100644
index 00000000..84262f5a
--- /dev/null
+++ b/snippets/sdks/erlang-server-sdk/snippets/getting-started/rebar-config.snippet.md
@@ -0,0 +1,20 @@
+---
+id: erlang-server-sdk/getting-started/rebar-config
+sdk: erlang-server-sdk
+kind: manifest-fragment
+lang: erlang
+description: rebar.config dependency entry for the LaunchDarkly Erlang server SDK.
+inputs:
+  version:
+    type: string
+    description: SDK version. Gonfalon fetches the latest from Hex asynchronously.
+    runtime-default: ""
+ld-application:
+  slot: rebar-config
+---
+
+Next, add the SDK package to your list of dependencies in `rebar.config`:
+
+```erlang
+{ldclient, "{{ version }}", {pkg, launchdarkly_server_sdk}}
+```
diff --git a/snippets/sdks/erlang-server-sdk/snippets/getting-started/rebar3-new.snippet.md b/snippets/sdks/erlang-server-sdk/snippets/getting-started/rebar3-new.snippet.md
new file mode 100644
index 00000000..e11a41ed
--- /dev/null
+++ b/snippets/sdks/erlang-server-sdk/snippets/getting-started/rebar3-new.snippet.md
@@ -0,0 +1,15 @@
+---
+id: erlang-server-sdk/getting-started/rebar3-new
+sdk: erlang-server-sdk
+kind: bootstrap
+lang: shell
+description: Bootstrap a rebar3 application.
+ld-application:
+  slot: rebar3-new
+---
+
+Create a new project for your application:
+
+```shell
+rebar3 new app hello_erlang && cd hello_erlang
+```
diff --git a/snippets/sdks/erlang-server-sdk/snippets/getting-started/run-call.snippet.md b/snippets/sdks/erlang-server-sdk/snippets/getting-started/run-call.snippet.md
new file mode 100644
index 00000000..c0ff2b70
--- /dev/null
+++ b/snippets/sdks/erlang-server-sdk/snippets/getting-started/run-call.snippet.md
@@ -0,0 +1,19 @@
+---
+id: erlang-server-sdk/getting-started/run-call
+sdk: erlang-server-sdk
+kind: run
+lang: erlang
+description: Erlang shell call to evaluate the flag.
+inputs:
+  featureKey:
+    type: flag-key
+    description: Default flag key baked into the rendered command.
+ld-application:
+  slot: run-call
+---
+
+Inside the rebar3 shell, call:
+
+```erlang
+hello_erlang_server:get(<<"{{ featureKey }}">>, "FALLBACK_VALUE", <<"user@example.com">>).
+```
diff --git a/snippets/sdks/erlang-server-sdk/snippets/getting-started/run-shell.snippet.md b/snippets/sdks/erlang-server-sdk/snippets/getting-started/run-shell.snippet.md
new file mode 100644
index 00000000..90866939
--- /dev/null
+++ b/snippets/sdks/erlang-server-sdk/snippets/getting-started/run-shell.snippet.md
@@ -0,0 +1,15 @@
+---
+id: erlang-server-sdk/getting-started/run-shell
+sdk: erlang-server-sdk
+kind: run
+lang: shell
+description: Open the rebar3 shell so the gen_server can be queried.
+ld-application:
+  slot: run-shell
+---
+
+Start the shell:
+
+```shell
+rebar3 shell
+```
diff --git a/snippets/sdks/erlang-server-sdk/snippets/getting-started/server-erl.snippet.md b/snippets/sdks/erlang-server-sdk/snippets/getting-started/server-erl.snippet.md
new file mode 100644
index 00000000..8260420f
--- /dev/null
+++ b/snippets/sdks/erlang-server-sdk/snippets/getting-started/server-erl.snippet.md
@@ -0,0 +1,68 @@
+---
+id: erlang-server-sdk/getting-started/server-erl
+sdk: erlang-server-sdk
+kind: hello-world
+lang: erlang
+file: src/hello_erlang_server.erl
+description: gen_server module that wraps the LaunchDarkly Erlang client.
+inputs:
+  apiKey:
+    type: sdk-key
+    description: SDK key baked into the rendered source.
+ld-application:
+  slot: server-erl
+validation:
+  runtime: erlang-server
+  entrypoint: src/hello_erlang_server.erl
+  # The user-facing flow is interactive: `rebar3 shell` + manual
+  # gen_server:call. The validator synthesizes the equivalent in
+  # `rebar3 eval` so the gen_server is exercised end-to-end without
+  # requiring a wrapper module in the snippet itself.
+---
+
+First create a new file named `src/hello_erlang_server.erl`. Then, in
+`src/hello_erlang_server.erl` create a new `LDClient` with your *environment-specific* SDK key:
+
+```erlang
+-module(hello_erlang_server).
+-behaviour(gen_server).
+
+-export([init/1, handle_call/3, handle_cast/2,
+         handle_info/2, terminate/2, code_change/3]).
+
+-export([start_link/0]).
+-export([get/3]).
+
+% public functions
+
+start_link() ->
+  gen_server:start_link({local, hello_erlang_server}, ?MODULE, [], []).
+
+get(Key, Fallback, ContextKey) -> gen_server:call(?MODULE, {get, Key, Fallback, ContextKey}).
+
+% gen_server callbacks
+
+init(_Args) ->
+  ldclient:start_instance("{{ apiKey }}", #{
+        http_options => #{
+            tls_options => ldclient_config:tls_basic_options()
+        }
+    }),
+  {ok, []}.
+
+handle_call({get, Key, Fallback, ContextKey}, _From, State) ->
+  Flag = ldclient:variation(Key, ldclient_context:new(ContextKey), Fallback),
+  {reply, Flag, State}.
+
+handle_cast(_Request, State) ->
+  {noreply, State}.
+
+handle_info(_Info, State) ->
+  {noreply, State}.
+
+terminate(_Reason, _State) ->
+  ok.
+
+code_change(_OldVsn, State, _Extra) ->
+  {ok, State}.
+```
diff --git a/snippets/sdks/erlang-server-sdk/snippets/getting-started/sup-childspecs.snippet.md b/snippets/sdks/erlang-server-sdk/snippets/getting-started/sup-childspecs.snippet.md
new file mode 100644
index 00000000..aa78a7b5
--- /dev/null
+++ b/snippets/sdks/erlang-server-sdk/snippets/getting-started/sup-childspecs.snippet.md
@@ -0,0 +1,17 @@
+---
+id: erlang-server-sdk/getting-started/sup-childspecs
+sdk: erlang-server-sdk
+kind: manifest-fragment
+lang: erlang
+description: ChildSpecs replacement to drop into src/hello_erlang_sup.erl.
+ld-application:
+  slot: sup-childspecs
+---
+
+Replace the `ChildSpecs` variable in `src/hello_erlang_sup.erl` with the following:
+
+```erlang
+[{console,
+            {hello_erlang_server, start_link, []},
+            permanent, 5000, worker, [hello_erlang_server]}]
+```
diff --git a/snippets/sdks/flutter-client-sdk/sdk.yaml b/snippets/sdks/flutter-client-sdk/sdk.yaml
new file mode 100644
index 00000000..db5e2c15
--- /dev/null
+++ b/snippets/sdks/flutter-client-sdk/sdk.yaml
@@ -0,0 +1,14 @@
+id: flutter-client-sdk
+sdk-meta-id: flutter
+display-name: Flutter
+type: client-side
+languages:
+  - id: dart
+    extensions: [".dart"]
+package-managers: [pub]
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  get-started-file: static/ld/components/getStarted/sdk/flutter.tsx
+docs:
+  reference-page: /sdk/client-side/flutter
+hello-world-repo: launchdarkly/hello-flutter
diff --git a/snippets/sdks/flutter-client-sdk/snippets/getting-started/cd-into.snippet.md b/snippets/sdks/flutter-client-sdk/snippets/getting-started/cd-into.snippet.md
new file mode 100644
index 00000000..4881325d
--- /dev/null
+++ b/snippets/sdks/flutter-client-sdk/snippets/getting-started/cd-into.snippet.md
@@ -0,0 +1,15 @@
+---
+id: flutter-client-sdk/getting-started/cd-into
+sdk: flutter-client-sdk
+kind: bootstrap
+lang: bash
+description: Change into the project directory.
+ld-application:
+  slot: cd-into
+---
+
+Change into the directory of the created project:
+
+```bash
+cd hello_flutter
+```
diff --git a/snippets/sdks/flutter-client-sdk/snippets/getting-started/flutter-create.snippet.md b/snippets/sdks/flutter-client-sdk/snippets/getting-started/flutter-create.snippet.md
new file mode 100644
index 00000000..18ca0076
--- /dev/null
+++ b/snippets/sdks/flutter-client-sdk/snippets/getting-started/flutter-create.snippet.md
@@ -0,0 +1,15 @@
+---
+id: flutter-client-sdk/getting-started/flutter-create
+sdk: flutter-client-sdk
+kind: bootstrap
+lang: bash
+description: Create a new Flutter project for Android and iOS.
+ld-application:
+  slot: flutter-create
+---
+
+Use the Flutter tool to create a new project:
+
+```bash
+flutter create hello_flutter --platforms android,ios
+```
diff --git a/snippets/sdks/flutter-client-sdk/snippets/getting-started/install.snippet.md b/snippets/sdks/flutter-client-sdk/snippets/getting-started/install.snippet.md
new file mode 100644
index 00000000..9cdd497f
--- /dev/null
+++ b/snippets/sdks/flutter-client-sdk/snippets/getting-started/install.snippet.md
@@ -0,0 +1,15 @@
+---
+id: flutter-client-sdk/getting-started/install
+sdk: flutter-client-sdk
+kind: install
+lang: bash
+description: Add the LaunchDarkly Flutter SDK as a dependency.
+ld-application:
+  slot: install
+---
+
+Add the LaunchDarkly SDK as a dependency:
+
+```bash
+flutter pub add launchdarkly_flutter_client_sdk
+```
diff --git a/snippets/sdks/flutter-client-sdk/snippets/getting-started/main-dart.snippet.md b/snippets/sdks/flutter-client-sdk/snippets/getting-started/main-dart.snippet.md
new file mode 100644
index 00000000..bb3758fc
--- /dev/null
+++ b/snippets/sdks/flutter-client-sdk/snippets/getting-started/main-dart.snippet.md
@@ -0,0 +1,137 @@
+---
+id: flutter-client-sdk/getting-started/main-dart
+sdk: flutter-client-sdk
+kind: hello-world
+lang: dart
+file: lib/main.dart
+description: Hello-world Flutter app that initializes the LaunchDarkly SDK and renders the flag value.
+inputs:
+  featureKey:
+    type: flag-key
+    description: Default flag key baked into the rendered source.
+ld-application:
+  slot: main-dart
+validation:
+  runtime: flutter-client
+  entrypoint: lib/main.dart
+  # The credential isn't substituted into the source — the snippet uses
+  # CredentialSource.fromEnvironment() which reads
+  # LAUNCHDARKLY_CLIENT_SIDE_ID baked in via flutter's --dart-define
+  # flag at build time. The validator passes that env var through; no
+  # `inputs:` declaration needed since nothing is interpolated here.
+---
+
+Open the file `lib/main.dart` and replace with the following code:
+
+```dart
+import 'package:flutter/material.dart';
+import 'package:launchdarkly_flutter_client_sdk/launchdarkly_flutter_client_sdk.dart';
+import 'package:provider/provider.dart';
+
+void main() {
+  runApp(const MyApp());
+}
+
+class MyApp extends StatelessWidget {
+  const MyApp({super.key});
+
+  // This widget is the root of your application.
+  @override
+  Widget build(BuildContext context) {
+    // The LDClient doesn't need to change throughout the lifetime of the
+    // application, so we wrap the application in a provider with the client.
+    return Provider<LDClient>(
+        create: (_) => LDClient(
+            LDConfig(
+              // The credentials come from the environment, you can set them
+              // using --dart-define.
+              // Examples:
+              // flutter run --dart-define LAUNCHDARKLY_CLIENT_SIDE_ID=<my-client-side-id> -d Chrome
+              // flutter run --dart-define LAUNCHDARKLY_MOBILE_KEY=<my-mobile-key> -d ios
+              //
+              // Alternatively `CredentialSource.fromEnvironment()` can be replaced with your mobile key.
+              CredentialSource.fromEnvironment(),
+              AutoEnvAttributes.enabled,
+            ),
+            // Here we are using a default user with key of 'example-user-key'.
+            LDContextBuilder().kind('user', 'example-user-key')
+              .setString('name', 'Sandy').build()),
+        dispose: (_, client) => client.close(),
+        // We use a future provider to wait for the client to either start,
+        // or for a timeout to elapse.
+        child: MaterialApp(
+          title: 'LaunchDarkly Hello App',
+          theme: ThemeData(
+            useMaterial3: true,
+          ),
+          home: const MyHomePage(),
+        ));
+  }
+}
+
+class MyHomePage extends StatefulWidget {
+  const MyHomePage({super.key});
+
+  @override
+  State<MyHomePage> createState() => _MyHomePageState();
+}
+
+/// Example provider which listens for flag changes and maps them to bool
+/// values. It would also be possible to map to some application specific model
+/// types. When mapping be sure all values are accessed through the client
+/// `variation` methods. This ensures that the SDK generates the expected
+/// events.
+class FlagProviderBool extends StreamProvider<bool> {
+  FlagProviderBool(
+      {super.key,
+      required LDClient client,
+      required String flagKey,
+      required bool defaultValue,
+      required Widget child})
+      : super(
+            create: (context) => client.flagChanges
+                .where((element) => element.keys.contains(flagKey))
+                .map((event) => client.boolVariation(flagKey, defaultValue)),
+            // Here we get the initial value of the flag. If the SDK is not
+            // initialized, then the default value will be returned.
+            initialData: client.boolVariation(flagKey, defaultValue),
+            child: child);
+}
+
+class _MyHomePageState extends State<MyHomePage> {
+  static const String flagKey = '{{ featureKey }}';
+
+  @override
+  Widget build(BuildContext context) {
+    // The FutureBuilder here is used to gate the presentation content
+    // based on the LaunchDarkly SDK having started. While it has not started,
+    // a loading indicator will be shown. After it has started, or encountered
+    // a timeout, then it will render the content.
+    return FutureBuilder(
+        future: Provider.of<LDClient>(context, listen: false)
+            .start()
+            // In this case we do not have special handling for a failed
+            // initialization or timeout.
+            .timeout(const Duration(seconds: 5), onTimeout: () => true)
+            .then((value) => true),
+                builder: (context, loaded) => loaded.data ?? false ?
+                    FlagProviderBool(
+                        // The client will not be changing, so we don't need to
+                        // listen for client changes.
+                        client: Provider.of<LDClient>(context, listen: false),
+                        flagKey: flagKey,
+                        defaultValue: false,
+                        child: Consumer<bool>(
+                          builder: (context, flagValue, _) => Scaffold(
+                              backgroundColor: flagValue ? const Color(0xFF00844B) : const Color(0xFF373841),
+                              body:
+                                  Center(
+                                    child: Text(
+                                      'The $flagKey feature flag evaluates to $flagValue',
+                                      style: const TextStyle(color: Colors.white, fontSize: 16)
+                                    )
+                                  )),
+                        )) : const CircularProgressIndicator());
+  }
+}
+```
diff --git a/snippets/sdks/flutter-client-sdk/snippets/getting-started/min-sdk.snippet.md b/snippets/sdks/flutter-client-sdk/snippets/getting-started/min-sdk.snippet.md
new file mode 100644
index 00000000..6796620b
--- /dev/null
+++ b/snippets/sdks/flutter-client-sdk/snippets/getting-started/min-sdk.snippet.md
@@ -0,0 +1,15 @@
+---
+id: flutter-client-sdk/getting-started/min-sdk
+sdk: flutter-client-sdk
+kind: manifest-fragment
+lang: gradle
+description: android/app/build.gradle minSdkVersion line.
+ld-application:
+  slot: min-sdk
+---
+
+Ensure that `android/app/build.gradle` specifies a `minSdkVersion` of at least 21.
+
+```gradle
+minSdkVersion 21
+```
diff --git a/snippets/sdks/flutter-client-sdk/snippets/getting-started/podfile-platform.snippet.md b/snippets/sdks/flutter-client-sdk/snippets/getting-started/podfile-platform.snippet.md
new file mode 100644
index 00000000..dadbe180
--- /dev/null
+++ b/snippets/sdks/flutter-client-sdk/snippets/getting-started/podfile-platform.snippet.md
@@ -0,0 +1,15 @@
+---
+id: flutter-client-sdk/getting-started/podfile-platform
+sdk: flutter-client-sdk
+kind: manifest-fragment
+lang: ruby
+description: ios/Podfile platform line.
+ld-application:
+  slot: podfile-platform
+---
+
+Ensure that `ios/Podfile` specifies a minimum deployment target of at least 10.0.
+
+```ruby
+platform :ios, '10.0'
+```
diff --git a/snippets/sdks/flutter-client-sdk/snippets/getting-started/run.snippet.md b/snippets/sdks/flutter-client-sdk/snippets/getting-started/run.snippet.md
new file mode 100644
index 00000000..52dc2a5b
--- /dev/null
+++ b/snippets/sdks/flutter-client-sdk/snippets/getting-started/run.snippet.md
@@ -0,0 +1,19 @@
+---
+id: flutter-client-sdk/getting-started/run
+sdk: flutter-client-sdk
+kind: run
+lang: bash
+description: Run the Flutter app with the mobile key passed via --dart-define.
+inputs:
+  mobileKey:
+    type: mobile-key
+    description: Mobile key embedded in the rendered Run command.
+ld-application:
+  slot: run
+---
+
+Run:
+
+```bash
+flutter run --dart-define LAUNCHDARKLY_MOBILE_KEY={{ mobileKey }}
+```
diff --git a/snippets/sdks/go-server-sdk/sdk.yaml b/snippets/sdks/go-server-sdk/sdk.yaml
new file mode 100644
index 00000000..647cb5b6
--- /dev/null
+++ b/snippets/sdks/go-server-sdk/sdk.yaml
@@ -0,0 +1,14 @@
+id: go-server-sdk
+sdk-meta-id: go
+display-name: Go
+type: server-side
+languages:
+  - id: go
+    extensions: [".go"]
+package-managers: [go-modules]
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  get-started-file: static/ld/components/getStarted/sdk/go.tsx
+docs:
+  reference-page: /sdk/server-side/go
+hello-world-repo: launchdarkly/hello-go
diff --git a/snippets/sdks/go-server-sdk/snippets/getting-started/install.snippet.md b/snippets/sdks/go-server-sdk/snippets/getting-started/install.snippet.md
new file mode 100644
index 00000000..46f76301
--- /dev/null
+++ b/snippets/sdks/go-server-sdk/snippets/getting-started/install.snippet.md
@@ -0,0 +1,15 @@
+---
+id: go-server-sdk/getting-started/install
+sdk: go-server-sdk
+kind: install
+lang: shell
+description: Install the Go server SDK module.
+ld-application:
+  slot: install
+---
+
+Next, install the SDK:
+
+```shell
+go get github.com/launchdarkly/go-server-sdk/v7
+```
diff --git a/snippets/sdks/go-server-sdk/snippets/getting-started/main-go.snippet.md b/snippets/sdks/go-server-sdk/snippets/getting-started/main-go.snippet.md
new file mode 100644
index 00000000..eb4dc950
--- /dev/null
+++ b/snippets/sdks/go-server-sdk/snippets/getting-started/main-go.snippet.md
@@ -0,0 +1,100 @@
+---
+id: go-server-sdk/getting-started/main-go
+sdk: go-server-sdk
+kind: hello-world
+lang: go
+file: main.go
+description: Hello-world program that initializes the Go server SDK and watches a feature flag.
+inputs:
+  featureKey:
+    type: flag-key
+    description: Default flag key baked into the rendered source. Validation reads LAUNCHDARKLY_FLAG_KEY at runtime; the env var takes precedence.
+ld-application:
+  slot: main-go
+validation:
+  runtime: go
+---
+
+Create a file called `main.go` and add the following code:
+
+```go
+package main
+
+  import (
+    "fmt"
+    "os"
+    "time"
+
+    "github.com/launchdarkly/go-sdk-common/v3/ldcontext"
+    "github.com/launchdarkly/go-sdk-common/v3/ldvalue"
+    ld "github.com/launchdarkly/go-server-sdk/v7"
+  )
+
+  func showBanner() {
+    fmt.Print("\n        ██       \n" +
+      "          ██     \n" +
+      "      ████████   \n" +
+      "         ███████ \n" +
+      "██ LAUNCHDARKLY █\n" +
+      "         ███████ \n" +
+      "      ████████   \n" +
+      "          ██     \n" +
+      "        ██       \n")
+  }
+
+  func showMessage(s string) { fmt.Printf("*** %s\n\n", s) }
+
+  func main() {
+    var sdkKey = os.Getenv("LAUNCHDARKLY_SDK_KEY")
+
+    if sdkKey == "" {
+      showMessage("LaunchDarkly SDK key is required: set the LAUNCHDARKLY_SDK_KEY environment variable and try again.")
+      os.Exit(1)
+    }
+
+    ldClient, _ := ld.MakeClient(sdkKey, 5*time.Second)
+    if ldClient.Initialized() {
+      showMessage("SDK successfully initialized!")
+    } else {
+      showMessage("SDK failed to initialize")
+      os.Exit(1)
+    }
+
+    // Set up the evaluation context. This context should appear on your LaunchDarkly contexts dashboard
+    // soon after you run the demo.
+    context := ldcontext.NewBuilder("example-user-key").
+      Name("Sandy").
+      Build()
+
+    // Set featureFlagKey to the feature flag key you want to evaluate.
+    var featureFlagKey = "{{ featureKey }}"
+
+    if os.Getenv("LAUNCHDARKLY_FLAG_KEY") != "" {
+      featureFlagKey = os.Getenv("LAUNCHDARKLY_FLAG_KEY")
+    }
+
+    flagValue, err := ldClient.BoolVariation(featureFlagKey, context, false)
+    if err != nil {
+      showMessage("error: " + err.Error())
+    }
+
+    showMessage(fmt.Sprintf("The '%s' feature flag evaluates to %t.", featureFlagKey, flagValue))
+
+    if flagValue {
+      showBanner()
+    }
+
+    if os.Getenv("CI") != "" {
+      os.Exit(0)
+    }
+
+    updateCh := ldClient.GetFlagTracker().AddFlagValueChangeListener(featureFlagKey, context, ldvalue.Null())
+
+    for event := range updateCh {
+      showMessage(fmt.Sprintf("The '%s' feature flag evaluates to %t.", featureFlagKey, event.NewValue.BoolValue()))
+      if event.NewValue.BoolValue() {
+        showBanner()
+      }
+    }
+  }
+```
diff --git a/snippets/sdks/go-server-sdk/snippets/getting-started/mkdir.snippet.md b/snippets/sdks/go-server-sdk/snippets/getting-started/mkdir.snippet.md
new file mode 100644
index 00000000..6ad5d593
--- /dev/null
+++ b/snippets/sdks/go-server-sdk/snippets/getting-started/mkdir.snippet.md
@@ -0,0 +1,15 @@
+---
+id: go-server-sdk/getting-started/mkdir
+sdk: go-server-sdk
+kind: bootstrap
+lang: shell
+description: Create the project directory for the Go hello-world.
+ld-application:
+  slot: mkdir
+---
+
+Create a new directory for your application:
+
+```shell
+mkdir hello-go && cd hello-go
+```
diff --git a/snippets/sdks/go-server-sdk/snippets/getting-started/mod-init.snippet.md b/snippets/sdks/go-server-sdk/snippets/getting-started/mod-init.snippet.md
new file mode 100644
index 00000000..e631974d
--- /dev/null
+++ b/snippets/sdks/go-server-sdk/snippets/getting-started/mod-init.snippet.md
@@ -0,0 +1,15 @@
+---
+id: go-server-sdk/getting-started/mod-init
+sdk: go-server-sdk
+kind: bootstrap
+lang: shell
+description: Initialize a Go module for the project.
+ld-application:
+  slot: mod-init
+---
+
+Start your module using the [`go mod init`](https://go.dev/ref/mod#go-mod-init) command:
+
+```shell
+go mod init example/hello-go
+```
diff --git a/snippets/sdks/go-server-sdk/snippets/getting-started/run.snippet.md b/snippets/sdks/go-server-sdk/snippets/getting-started/run.snippet.md
new file mode 100644
index 00000000..3de14355
--- /dev/null
+++ b/snippets/sdks/go-server-sdk/snippets/getting-started/run.snippet.md
@@ -0,0 +1,19 @@
+---
+id: go-server-sdk/getting-started/run
+sdk: go-server-sdk
+kind: run
+lang: shell
+description: Build and run the program with the SDK key in the environment.
+inputs:
+  apiKey:
+    type: sdk-key
+    description: SDK key to embed in the rendered Run command.
+ld-application:
+  slot: run
+---
+
+Build and run:
+
+```shell
+go build && LAUNCHDARKLY_SDK_KEY='{{ apiKey }}' ./hello-go
+```
diff --git a/snippets/sdks/haskell-server-sdk/sdk.yaml b/snippets/sdks/haskell-server-sdk/sdk.yaml
new file mode 100644
index 00000000..69d7d0f0
--- /dev/null
+++ b/snippets/sdks/haskell-server-sdk/sdk.yaml
@@ -0,0 +1,14 @@
+id: haskell-server-sdk
+sdk-meta-id: haskell
+display-name: Haskell
+type: server-side
+languages:
+  - id: haskell
+    extensions: [".hs"]
+package-managers: [stack, cabal]
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  get-started-file: static/ld/components/getStarted/sdk/haskell.tsx
+docs:
+  reference-page: /sdk/server-side/haskell
+hello-world-repo: launchdarkly/hello-haskell-server
diff --git a/snippets/sdks/haskell-server-sdk/snippets/getting-started/main-hs.snippet.md b/snippets/sdks/haskell-server-sdk/snippets/getting-started/main-hs.snippet.md
new file mode 100644
index 00000000..eab83924
--- /dev/null
+++ b/snippets/sdks/haskell-server-sdk/snippets/getting-started/main-hs.snippet.md
@@ -0,0 +1,103 @@
+---
+id: haskell-server-sdk/getting-started/main-hs
+sdk: haskell-server-sdk
+kind: hello-world
+lang: haskell
+file: app/Main.hs
+description: Hello-world program that initializes the Haskell server SDK and watches a feature flag.
+inputs:
+  featureKey:
+    type: flag-key
+    description: Default flag key baked into the rendered source. Gonfalon's snippet uses this as the env-var name passed to lookupEnv (see comment below); validation reads LAUNCHDARKLY_FLAG_KEY at runtime.
+ld-application:
+  slot: main-hs
+validation:
+  runtime: haskell-server
+  entrypoint: app/Main.hs
+---
+
+Edit `app/Main.hs` by adding the following code:
+
+```haskell
+{-# LANGUAGE OverloadedStrings, NumericUnderscores #-}
+module Main where
+import Control.Concurrent  (threadDelay)
+import Control.Monad       (forever)
+import Data.Text           (Text, pack)
+import Data.Function       ((&))
+import qualified LaunchDarkly.Server as LD
+import System.Timeout (timeout)
+import Text.Printf (printf, hPrintf)
+import System.Environment (lookupEnv)
+
+showEvaluationResult :: String -> Bool -> IO ()
+showEvaluationResult key value = do
+    printf "*** The %s feature flag evaluates to %s\n" key (show value)
+
+showBanner :: IO ()
+showBanner = putStr "\n\
+\        ██       \n\
+\          ██     \n\
+\      ████████   \n\
+\         ███████ \n\
+\██ LAUNCHDARKLY █\n\
+\         ███████ \n\
+\      ████████   \n\
+\          ██     \n\
+\        ██       \n\
+\\n\
+\"
+
+showMessage :: String -> Bool -> Maybe Bool -> Bool -> IO Bool
+showMessage key True _ True = do
+    showBanner
+    showEvaluationResult key True
+    pure False
+showMessage key value Nothing showBanner = do
+    showEvaluationResult key value
+    pure showBanner
+showMessage key value (Just lastValue) showBanner
+    | value /= lastValue = do
+        showEvaluationResult key value
+        pure showBanner
+    | otherwise = pure showBanner
+
+waitForClient :: LD.Client -> IO Bool
+waitForClient client = do
+    status <- LD.getStatus client
+    case status of
+        LD.Uninitialized -> threadDelay (1 * 1_000) >> waitForClient client
+        LD.Initialized -> return True
+        _anyOtherStatus -> return False
+
+evaluateLoop :: LD.Client -> String -> LD.Context -> Maybe Bool -> Bool -> IO ()
+evaluateLoop client featureFlagKey context lastValue showBanner = do
+    value <- LD.boolVariation client (pack featureFlagKey) context False
+    showBanner' <- showMessage featureFlagKey value lastValue showBanner
+
+    threadDelay (1 * 1_000_000) >> evaluateLoop client featureFlagKey context (Just value) showBanner'
+
+evaluate :: Maybe String -> Maybe String -> IO ()
+evaluate (Just sdkKey) Nothing = do evaluate (Just sdkKey) (Just "sample-feature")
+evaluate (Just sdkKey) (Just featureFlagKey) = do
+    -- Set up the evaluation context. This context should appear on your
+    -- LaunchDarkly contexts dashboard soon after you run the demo.
+    let context = LD.makeContext "example-user-key" "user" & LD.withName "Sandy"
+    client <- LD.makeClient $ LD.makeConfig (pack sdkKey)
+    initialized <- timeout (5_000 * 1_000) (waitForClient client)
+
+    case initialized of
+        Just True ->  do
+            print "*** SDK successfully initialized!"
+            evaluateLoop client featureFlagKey context Nothing True
+        _notInitialized -> putStrLn "*** SDK failed to initialize. Please check your internet connection and SDK credential for any typo."
+evaluate  _ _ = putStrLn "*** You must define LAUNCHDARKLY_SDK_KEY and LAUNCHDARKLY_FLAG_KEY before running this script"
+
+main :: IO ()
+main = do
+    -- Set sdkKey to your LaunchDarkly SDK key.
+    sdkKey <- lookupEnv "LAUNCHDARKLY_SDK_KEY"
+    -- Set featureFlagKey to the feature flag key you want to evaluate.
+    featureFlagKey <- lookupEnv "LAUNCHDARKLY_FLAG_KEY"
+    evaluate sdkKey featureFlagKey
+```
diff --git a/snippets/sdks/haskell-server-sdk/snippets/getting-started/package-yaml.snippet.md b/snippets/sdks/haskell-server-sdk/snippets/getting-started/package-yaml.snippet.md
new file mode 100644
index 00000000..3c2195df
--- /dev/null
+++ b/snippets/sdks/haskell-server-sdk/snippets/getting-started/package-yaml.snippet.md
@@ -0,0 +1,15 @@
+---
+id: haskell-server-sdk/getting-started/package-yaml
+sdk: haskell-server-sdk
+kind: manifest-fragment
+lang: yaml
+description: Dependencies entry to add to package.yaml.
+ld-application:
+  slot: package-yaml
+---
+
+Next, add the SDK and `text` package to your list of dependencies in `package.yaml`:
+
+```yaml
+launchdarkly-server-sdk, text
+```
diff --git a/snippets/sdks/haskell-server-sdk/snippets/getting-started/run.snippet.md b/snippets/sdks/haskell-server-sdk/snippets/getting-started/run.snippet.md
new file mode 100644
index 00000000..7b341e3a
--- /dev/null
+++ b/snippets/sdks/haskell-server-sdk/snippets/getting-started/run.snippet.md
@@ -0,0 +1,19 @@
+---
+id: haskell-server-sdk/getting-started/run
+sdk: haskell-server-sdk
+kind: run
+lang: shell
+description: Build with stack and run.
+inputs:
+  apiKey:
+    type: sdk-key
+    description: SDK key embedded in the rendered Run command.
+ld-application:
+  slot: run
+---
+
+Build and run:
+
+```shell
+stack build && LAUNCHDARKLY_SDK_KEY='{{ apiKey }}' stack exec hello-haskell-exe
+```
diff --git a/snippets/sdks/haskell-server-sdk/snippets/getting-started/stack-new.snippet.md b/snippets/sdks/haskell-server-sdk/snippets/getting-started/stack-new.snippet.md
new file mode 100644
index 00000000..ae0decfb
--- /dev/null
+++ b/snippets/sdks/haskell-server-sdk/snippets/getting-started/stack-new.snippet.md
@@ -0,0 +1,15 @@
+---
+id: haskell-server-sdk/getting-started/stack-new
+sdk: haskell-server-sdk
+kind: bootstrap
+lang: shell
+description: Bootstrap a Haskell stack project.
+ld-application:
+  slot: stack-new
+---
+
+Create a new project for your application:
+
+```shell
+stack new hello-haskell && cd hello-haskell
+```
diff --git a/snippets/sdks/haskell-server-sdk/snippets/getting-started/stack-yaml.snippet.md b/snippets/sdks/haskell-server-sdk/snippets/getting-started/stack-yaml.snippet.md
new file mode 100644
index 00000000..99b0e63c
--- /dev/null
+++ b/snippets/sdks/haskell-server-sdk/snippets/getting-started/stack-yaml.snippet.md
@@ -0,0 +1,20 @@
+---
+id: haskell-server-sdk/getting-started/stack-yaml
+sdk: haskell-server-sdk
+kind: manifest-fragment
+lang: yaml
+description: extra-deps entry to add to stack.yaml.
+inputs:
+  version:
+    type: string
+    description: SDK version. Gonfalon fetches the latest from Hackage asynchronously.
+    runtime-default: ""
+ld-application:
+  slot: stack-yaml
+---
+
+Add the SDK version as an `extra-deps` entry in `stack.yaml`:
+
+```yaml
+- launchdarkly-server-sdk-{{ version }}
+```
diff --git a/snippets/sdks/ios-client-sdk/sdk.yaml b/snippets/sdks/ios-client-sdk/sdk.yaml
new file mode 100644
index 00000000..8d2e9bb0
--- /dev/null
+++ b/snippets/sdks/ios-client-sdk/sdk.yaml
@@ -0,0 +1,14 @@
+id: ios-client-sdk
+sdk-meta-id: ios
+display-name: iOS (Swift)
+type: client-side
+languages:
+  - id: swift
+    extensions: [".swift"]
+package-managers: [cocoapods, spm, carthage]
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  get-started-file: static/ld/components/getStarted/sdk/ios.tsx
+docs:
+  reference-page: /sdk/client-side/ios
+hello-world-repo: launchdarkly/hello-ios-swift
diff --git a/snippets/sdks/ios-client-sdk/snippets/getting-started/app-delegate.snippet.md b/snippets/sdks/ios-client-sdk/snippets/getting-started/app-delegate.snippet.md
new file mode 100644
index 00000000..bba1fbcf
--- /dev/null
+++ b/snippets/sdks/ios-client-sdk/snippets/getting-started/app-delegate.snippet.md
@@ -0,0 +1,50 @@
+---
+id: ios-client-sdk/getting-started/app-delegate
+sdk: ios-client-sdk
+kind: hello-world
+lang: swift
+file: AppDelegate.swift
+description: AppDelegate that boots the LDClient on app launch.
+inputs:
+  mobileKey:
+    type: mobile-key
+    description: Mobile key baked into the rendered source.
+ld-application:
+  slot: app-delegate
+---
+
+Open `AppDelegate.swift` and add the following code:
+
+```swift
+import UIKit
+// Import the LaunchDarkly SDK.
+import LaunchDarkly
+
+@UIApplicationMain
+class AppDelegate: UIResponder, UIApplicationDelegate {
+  var window: UIWindow?
+
+  // Set sdkKey to your LaunchDarkly mobile key.
+  private let sdkKey = "{{ mobileKey }}"
+
+  func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
+    setUpLDClient()
+
+    return true
+  }
+
+  private func setUpLDClient() {
+    // Set up the evaluation context. This context should appear on your
+    // LaunchDarkly contexts dashboard soon after you run the demo.
+    var contextBuilder = LDContextBuilder(key: "example-user-key")
+    contextBuilder.kind("user")
+    contextBuilder.name("Sandy")
+
+    guard case .success(let context) = contextBuilder.build()
+    else { return }
+
+    let config = LDConfig(mobileKey: sdkKey, autoEnvAttributes: .enabled)
+    LDClient.start(config: config, context: context, startWaitSeconds: 30)
+  }
+}
+```
diff --git a/snippets/sdks/ios-client-sdk/snippets/getting-started/pod-install.snippet.md b/snippets/sdks/ios-client-sdk/snippets/getting-started/pod-install.snippet.md
new file mode 100644
index 00000000..bc7e2878
--- /dev/null
+++ b/snippets/sdks/ios-client-sdk/snippets/getting-started/pod-install.snippet.md
@@ -0,0 +1,15 @@
+---
+id: ios-client-sdk/getting-started/pod-install
+sdk: ios-client-sdk
+kind: install
+lang: shell
+description: Install pod dependencies.
+ld-application:
+  slot: pod-install
+---
+
+Install the dependencies:
+
+```shell
+pod install
+```
diff --git a/snippets/sdks/ios-client-sdk/snippets/getting-started/podfile.snippet.md b/snippets/sdks/ios-client-sdk/snippets/getting-started/podfile.snippet.md
new file mode 100644
index 00000000..e715c00b
--- /dev/null
+++ b/snippets/sdks/ios-client-sdk/snippets/getting-started/podfile.snippet.md
@@ -0,0 +1,24 @@
+---
+id: ios-client-sdk/getting-started/podfile
+sdk: ios-client-sdk
+kind: manifest
+lang: ruby
+file: Podfile
+description: CocoaPods Podfile pulling the LaunchDarkly iOS SDK.
+inputs:
+  version:
+    type: string
+    description: SDK version. Defaults to '11.1.2' as a fallback when gonfalon's async fetch from CocoaPods hasn't completed.
+    runtime-default: "11.1.2"
+ld-application:
+  slot: podfile
+---
+
+Install the LaunchDarkly SDK using [CocoaPods](https://cocoapods.org/) by creating a `Podfile`:
+
+```ruby
+target 'hello-swift' do
+  pod 'LaunchDarkly', '{{ version }}'
+end
+
+```
diff --git a/snippets/sdks/ios-client-sdk/snippets/getting-started/view-controller.snippet.md b/snippets/sdks/ios-client-sdk/snippets/getting-started/view-controller.snippet.md
new file mode 100644
index 00000000..65b49ab7
--- /dev/null
+++ b/snippets/sdks/ios-client-sdk/snippets/getting-started/view-controller.snippet.md
@@ -0,0 +1,56 @@
+---
+id: ios-client-sdk/getting-started/view-controller
+sdk: ios-client-sdk
+kind: hello-world
+lang: swift
+file: ViewController.swift
+description: ViewController that observes the flag and renders the value.
+inputs:
+  featureKey:
+    type: flag-key
+    description: Default flag key baked into the rendered source.
+ld-application:
+  slot: view-controller
+validation:
+  runtime: ios-client
+  entrypoint: ViewController.swift
+  companions: [ios-client-sdk/getting-started/app-delegate]
+---
+
+Open `ViewController.swift` and add the following code:
+
+```swift
+import UIKit
+import LaunchDarkly
+
+class ViewController: UIViewController {
+
+    @IBOutlet weak var featureFlagLabel: UILabel!
+
+    // Set featureFlagKey to the feature flag key you want to evaluate.
+    fileprivate let featureFlagKey = "{{ featureKey }}"
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+
+        if let ld = LDClient.get() {
+            ld.observe(key: featureFlagKey, owner: self) { [weak self] changedFlag in
+                guard let me = self else { return }
+                guard case .bool(let booleanValue) = changedFlag.newValue else { return }
+
+                me.updateUi(flagKey: changedFlag.key, result: booleanValue)
+            }
+            let result = ld.boolVariation(forKey: featureFlagKey, defaultValue: false)
+            updateUi(flagKey: featureFlagKey, result: result)
+        }
+    }
+
+    func updateUi(flagKey: String, result: Bool) {
+        self.featureFlagLabel.text = "The \(flagKey) feature flag evaluates to \(result)"
+
+        let toggleOn = UIColor(red: 0, green: 0.52, blue: 0.29, alpha: 1)
+        let toggleOff = UIColor(red: 0.22, green: 0.22, blue: 0.25, alpha: 1)
+        self.view.backgroundColor = result ? toggleOn : toggleOff
+    }
+}
+```
diff --git a/snippets/sdks/java-server-sdk/sdk.yaml b/snippets/sdks/java-server-sdk/sdk.yaml
new file mode 100644
index 00000000..1382d621
--- /dev/null
+++ b/snippets/sdks/java-server-sdk/sdk.yaml
@@ -0,0 +1,14 @@
+id: java-server-sdk
+sdk-meta-id: java
+display-name: Java
+type: server-side
+languages:
+  - id: java
+    extensions: [".java"]
+package-managers: [maven, gradle]
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  get-started-file: static/ld/components/getStarted/sdk/java.tsx
+docs:
+  reference-page: /sdk/server-side/java
+hello-world-repo: launchdarkly/hello-java
diff --git a/snippets/sdks/java-server-sdk/snippets/getting-started/app-java.snippet.md b/snippets/sdks/java-server-sdk/snippets/getting-started/app-java.snippet.md
new file mode 100644
index 00000000..c5fcdc52
--- /dev/null
+++ b/snippets/sdks/java-server-sdk/snippets/getting-started/app-java.snippet.md
@@ -0,0 +1,135 @@
+---
+id: java-server-sdk/getting-started/app-java
+sdk: java-server-sdk
+kind: hello-world
+lang: java
+file: src/main/java/com/launchdarkly/tutorial/App.java
+description: Hello-world program that initializes the Java server SDK and watches a feature flag.
+inputs:
+  apiKey:
+    type: sdk-key
+    description: SDK key baked into the rendered source. Validation reads LAUNCHDARKLY_SDK_KEY at runtime; the env var takes precedence.
+  featureKey:
+    type: flag-key
+    description: Default flag key baked into the rendered source. Validation reads LAUNCHDARKLY_FLAG_KEY at runtime.
+ld-application:
+  slot: app-java
+validation:
+  runtime: jvm
+---
+
+Remove the prepopulated lines except the first line and add the following code to `App.java`:
+
+```java
+import java.io.IOException;
+
+  import com.launchdarkly.sdk.*;
+  import com.launchdarkly.sdk.server.*;
+
+  public class App {
+
+    // Set SDK_KEY to your LaunchDarkly SDK key.
+    static String SDK_KEY = "{{ apiKey }}";
+
+    // Set FEATURE_FLAG_KEY to the feature flag key you want to evaluate.
+    static String FEATURE_FLAG_KEY = "{{ featureKey }}";
+
+    private static void showMessage(String s) {
+      System.out.println("*** " + s);
+      System.out.println();
+    }
+
+    private static void showBanner() {
+      showMessage("\n        ██       \n" +
+                  "          ██     \n" +
+                  "      ████████   \n" +
+                  "         ███████ \n" +
+                  "██ LAUNCHDARKLY █\n" +
+                  "         ███████ \n" +
+                  "      ████████   \n" +
+                  "          ██     \n" +
+                  "        ██       \n");
+    }
+
+    public static void main(String... args) throws Exception {
+      boolean CIMode = System.getenv("CI") != null;
+
+      String envSDKKey = System.getenv("LAUNCHDARKLY_SDK_KEY");
+      if(envSDKKey != null) {
+        SDK_KEY = envSDKKey;
+      }
+
+      String envFlagKey = System.getenv("LAUNCHDARKLY_FLAG_KEY");
+      if(envFlagKey != null) {
+        FEATURE_FLAG_KEY = envFlagKey;
+      }
+
+      LDConfig config = new LDConfig.Builder().build();
+
+      if (SDK_KEY == null || SDK_KEY.equals("")) {
+        showMessage("Please set the LAUNCHDARKLY_SDK_KEY environment variable or edit Hello.java to set SDK_KEY to your LaunchDarkly SDK key first.");
+        System.exit(1);
+      }
+
+      final LDClient client = new LDClient(SDK_KEY, config);
+      if (client.isInitialized()) {
+        showMessage("SDK successfully initialized!");
+      } else {
+        showMessage("SDK failed to initialize.  Please check your internet connection and SDK credential for any typo.");
+        System.exit(1);
+      }
+
+      // Set up the evaluation context. This context should appear on your
+      // LaunchDarkly contexts dashboard soon after you run the demo.
+      final LDContext context = LDContext.builder("example-user-key")
+          .name("Sandy")
+          .build();
+
+      // Evaluate the feature flag for this context.
+      boolean flagValue = client.boolVariation(FEATURE_FLAG_KEY, context, false);
+      showMessage("The '" + FEATURE_FLAG_KEY + "' feature flag evaluates to " + flagValue + ".");
+
+      if (flagValue) {
+        showBanner();
+      }
+
+      //If this is building for CI, we don't need to keep running the Hello App continously.
+      if(CIMode) {
+        System.exit(0);
+      }
+
+      // We set up a flag change listener so you can see flag changes as you change
+      // the flag rules.
+      client.getFlagTracker().addFlagValueChangeListener(FEATURE_FLAG_KEY, context, event -> {
+          showMessage("The '" + FEATURE_FLAG_KEY + "' feature flag evaluates to " + event.getNewValue() + ".");
+
+          if (event.getNewValue().booleanValue()) {
+            showBanner();
+          }
+      });
+      showMessage("Listening for feature flag changes.");
+
+      // Here we ensure that when the application terminates, the SDK shuts down
+      // cleanly and has a chance to deliver analytics events to LaunchDarkly.
+      // If analytics events are not delivered, the context attributes and flag usage
+      // statistics may not appear on your dashboard. In a normal long-running
+      // application, the SDK would continue running and events would be delivered
+      // automatically in the background.
+      Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {
+        public void run() {
+          try {
+            client.close();
+          } catch (IOException e) {
+            // ignore
+          }
+        }
+      }, "ldclient-cleanup-thread"));
+
+      // Keeps example application alive.
+      Object mon = new Object();
+      synchronized (mon) {
+        mon.wait();
+      }
+    }
+  }
+```
diff --git a/snippets/sdks/java-server-sdk/snippets/getting-started/cd-into.snippet.md b/snippets/sdks/java-server-sdk/snippets/getting-started/cd-into.snippet.md
new file mode 100644
index 00000000..1fdcf453
--- /dev/null
+++ b/snippets/sdks/java-server-sdk/snippets/getting-started/cd-into.snippet.md
@@ -0,0 +1,15 @@
+---
+id: java-server-sdk/getting-started/cd-into
+sdk: java-server-sdk
+kind: bootstrap
+lang: shell
+description: Change into the project directory.
+ld-application:
+  slot: cd-into
+---
+
+Change into the project directory:
+
+```shell
+cd hello-java
+```
diff --git a/snippets/sdks/java-server-sdk/snippets/getting-started/mvn-generate.snippet.md b/snippets/sdks/java-server-sdk/snippets/getting-started/mvn-generate.snippet.md
new file mode 100644
index 00000000..b418180d
--- /dev/null
+++ b/snippets/sdks/java-server-sdk/snippets/getting-started/mvn-generate.snippet.md
@@ -0,0 +1,15 @@
+---
+id: java-server-sdk/getting-started/mvn-generate
+sdk: java-server-sdk
+kind: bootstrap
+lang: shell
+description: Bootstrap a Maven project.
+ld-application:
+  slot: mvn-generate
+---
+
+Create a new project and accept the default options suggested by maven:
+
+```shell
+mvn archetype:generate -DgroupId=com.launchdarkly.tutorial -DartifactId=hello-java
+```
diff --git a/snippets/sdks/java-server-sdk/snippets/getting-started/pom-build.snippet.md b/snippets/sdks/java-server-sdk/snippets/getting-started/pom-build.snippet.md
new file mode 100644
index 00000000..f46f095a
--- /dev/null
+++ b/snippets/sdks/java-server-sdk/snippets/getting-started/pom-build.snippet.md
@@ -0,0 +1,31 @@
+---
+id: java-server-sdk/getting-started/pom-build
+sdk: java-server-sdk
+kind: manifest-fragment
+lang: xml
+description: pom.xml `<build>` block configuring the maven-assembly-plugin.
+ld-application:
+  slot: pom-build
+---
+
+Configure the Maven Assembly Plugin in your `pom.xml` to make it easier to run the application:
+
+```xml
+<build>
+  <plugins>
+    <plugin>
+      <artifactId>maven-assembly-plugin</artifactId>
+      <configuration>
+        <archive>
+          <manifest>
+            <mainClass>com.launchdarkly.tutorial.App</mainClass>
+          </manifest>
+        </archive>
+        <descriptorRefs>
+          <descriptorRef>jar-with-dependencies</descriptorRef>
+        </descriptorRefs>
+      </configuration>
+    </plugin>
+  </plugins>
+</build>
+```
diff --git a/snippets/sdks/java-server-sdk/snippets/getting-started/pom-compiler.snippet.md b/snippets/sdks/java-server-sdk/snippets/getting-started/pom-compiler.snippet.md
new file mode 100644
index 00000000..9d5229c1
--- /dev/null
+++ b/snippets/sdks/java-server-sdk/snippets/getting-started/pom-compiler.snippet.md
@@ -0,0 +1,16 @@
+---
+id: java-server-sdk/getting-started/pom-compiler
+sdk: java-server-sdk
+kind: manifest-fragment
+lang: xml
+description: pom.xml maven-compiler source/target levels.
+ld-application:
+  slot: pom-compiler
+---
+
+Depending on your Java version, you may need to change the compilation source and target level in `pom.xml`:
+
+```xml
+<maven.compiler.source>1.8</maven.compiler.source>
+        <maven.compiler.target>1.8</maven.compiler.target>
+```
diff --git a/snippets/sdks/java-server-sdk/snippets/getting-started/pom-dependency.snippet.md b/snippets/sdks/java-server-sdk/snippets/getting-started/pom-dependency.snippet.md
new file mode 100644
index 00000000..bad92d36
--- /dev/null
+++ b/snippets/sdks/java-server-sdk/snippets/getting-started/pom-dependency.snippet.md
@@ -0,0 +1,24 @@
+---
+id: java-server-sdk/getting-started/pom-dependency
+sdk: java-server-sdk
+kind: manifest-fragment
+lang: xml
+description: pom.xml `<dependencies>` entry for the Java server SDK.
+inputs:
+  version:
+    type: string
+    description: SDK version. Gonfalon fetches the latest from Maven Central asynchronously; renders as empty during the fetch (rather than the prior stale '5.0.0' fallback).
+    runtime-default: ""
+ld-application:
+  slot: pom-dependency
+---
+
+Add the SDK to your project in your `pom.xml <dependencies>` section:
+
+```xml
+<dependency>
+  <groupId>com.launchdarkly</groupId>
+  <artifactId>launchdarkly-java-server-sdk</artifactId>
+  <version>{{ version }}</version>
+</dependency>
+```
diff --git a/snippets/sdks/java-server-sdk/snippets/getting-started/run.snippet.md b/snippets/sdks/java-server-sdk/snippets/getting-started/run.snippet.md
new file mode 100644
index 00000000..cd32a8e6
--- /dev/null
+++ b/snippets/sdks/java-server-sdk/snippets/getting-started/run.snippet.md
@@ -0,0 +1,19 @@
+---
+id: java-server-sdk/getting-started/run
+sdk: java-server-sdk
+kind: run
+lang: shell
+description: Build the assembly jar and run with the SDK key in the environment.
+inputs:
+  apiKey:
+    type: sdk-key
+    description: SDK key embedded in the rendered Run command.
+ld-application:
+  slot: run
+---
+
+Build and run:
+
+```shell
+mvn clean compile assembly:single && LAUNCHDARKLY_SDK_KEY={{ apiKey }} java -jar target/hello-java-1.0-SNAPSHOT-jar-with-dependencies.jar
+```
diff --git a/snippets/sdks/js-client-sdk/sdk.yaml b/snippets/sdks/js-client-sdk/sdk.yaml
new file mode 100644
index 00000000..d1aded9b
--- /dev/null
+++ b/snippets/sdks/js-client-sdk/sdk.yaml
@@ -0,0 +1,14 @@
+id: js-client-sdk
+sdk-meta-id: js
+display-name: JavaScript (browser)
+type: client-side
+languages:
+  - id: html
+    extensions: [".html"]
+package-managers: [cdn, npm]
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  get-started-file: static/ld/components/getStarted/sdk/javascript.tsx
+docs:
+  reference-page: /sdk/client-side/javascript
+hello-world-repo: launchdarkly/hello-js
diff --git a/snippets/sdks/js-client-sdk/snippets/getting-started/index-html.snippet.md b/snippets/sdks/js-client-sdk/snippets/getting-started/index-html.snippet.md
new file mode 100644
index 00000000..8e29703c
--- /dev/null
+++ b/snippets/sdks/js-client-sdk/snippets/getting-started/index-html.snippet.md
@@ -0,0 +1,85 @@
+---
+id: js-client-sdk/getting-started/index-html
+sdk: js-client-sdk
+kind: hello-world
+lang: html
+file: index.html
+description: Hello-world HTML page that initializes the JavaScript client SDK and renders the flag value.
+inputs:
+  environmentId:
+    type: client-side-id
+    description: Client-side ID baked into the rendered source. Validation reads LAUNCHDARKLY_CLIENT_SIDE_ID at runtime.
+  featureKey:
+    type: flag-key
+    description: Default flag key baked into the rendered source. Validation reads LAUNCHDARKLY_FLAG_KEY at runtime.
+ld-application:
+  slot: index-html
+validation:
+  runtime: browser
+---
+
+Create a file called `index.html` and add the following code:
+
+```html
+<!DOCTYPE html>
+  <html lang="en">
+    <head>
+      <meta charset="utf-8">
+      <meta http-equiv="X-UA-Compatible" content="IE=edge;chrome=1">
+      <title>LaunchDarkly tutorial</title>
+      <script src="https://unpkg.com/launchdarkly-js-client-sdk@3"></script>
+    </head>
+    <body style="margin: 0;
+    background: #373841;
+    color: white;
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
+      'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
+      sans-serif;
+    -webkit-font-smoothing: antialiased;
+    -moz-osx-font-smoothing: grayscale;
+    text-align: center">
+      <script>
+      function main()
+      {
+        // Set clientSideID to your LaunchDarkly client-side ID
+        const clientSideID = '{{ environmentId }}';
+
+        // Set flagKey to the feature flag key you want to evaluate
+        const flagKey = '{{ featureKey }}';
+
+        // Set up the evaluation context. This context should appear on your
+        // LaunchDarkly contexts dashboard soon after you run the demo.
+        const context = {
+          kind: 'user',
+          key: 'example-user-key',
+          name: 'Sandy'
+        };
+
+        var div = document.createElement('div');
+        document.body.appendChild(div);
+        div.appendChild(document.createTextNode('Initializing...'));
+
+        const ldclient = LDClient.initialize(clientSideID, context);
+
+        function render() {
+          const flagValue = ldclient.variation(flagKey, false);
+          const label = 'The ' + flagKey + ' feature flag evaluates to ' + flagValue + '.';
+          document.body.style.background = flagValue ? '#00844B' : '#373841';
+          div.replaceChild(document.createTextNode(label), div.firstChild);
+        }
+
+        ldclient.on('initialized', () => {
+          div.replaceChild(document.createTextNode('SDK successfully initialized!'), div.firstChild);
+        });
+        ldclient.on('failed', () => {
+          div.replaceChild(document.createTextNode('SDK failed to initialize'), div.firstChild);
+        });
+        ldclient.on('ready', render);
+        ldclient.on('change', render);
+
+      }
+      main();
+      </script>
+    </body>
+  </html>
+```
diff --git a/snippets/sdks/lua-server-sdk/sdk.yaml b/snippets/sdks/lua-server-sdk/sdk.yaml
new file mode 100644
index 00000000..6f53ad34
--- /dev/null
+++ b/snippets/sdks/lua-server-sdk/sdk.yaml
@@ -0,0 +1,14 @@
+id: lua-server-sdk
+sdk-meta-id: lua
+display-name: Lua
+type: server-side
+languages:
+  - id: lua
+    extensions: [".lua"]
+package-managers: [luarocks]
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  get-started-file: static/ld/components/getStarted/sdk/luaServer.tsx
+docs:
+  reference-page: /sdk/server-side/lua
+hello-world-repo: launchdarkly/lua-server-sdk
diff --git a/snippets/sdks/lua-server-sdk/snippets/getting-started/cpp-build.snippet.md b/snippets/sdks/lua-server-sdk/snippets/getting-started/cpp-build.snippet.md
new file mode 100644
index 00000000..a7f0a893
--- /dev/null
+++ b/snippets/sdks/lua-server-sdk/snippets/getting-started/cpp-build.snippet.md
@@ -0,0 +1,27 @@
+---
+id: lua-server-sdk/getting-started/cpp-build
+sdk: lua-server-sdk
+kind: install
+lang: bash
+description: Compile and install the underlying C++ Server SDK from source.
+ld-application:
+  slot: cpp-build
+---
+
+If the C++ Server SDK is already installed or you already obtained release artifacts from LaunchDarkly, skip this step.
+
+Otherwise, compile and install the C++ Server SDK:
+
+```bash
+
+git clone https://github.com/launchdarkly/cpp-sdks.git && cd cpp-sdks
+mkdir build && cd build
+cmake -G Ninja -D BUILD_TESTING=OFF \
+               -D CMAKE_BUILD_TYPE=Release \
+               -D LD_BUILD_SHARED_LIBS=On \
+               -D CMAKE_INSTALL_PREFIX=./install ..
+cmake --build . --target launchdarkly-cpp-server
+cmake --install .
+cd ../../
+        
+```
diff --git a/snippets/sdks/lua-server-sdk/snippets/getting-started/hello-lua.snippet.md b/snippets/sdks/lua-server-sdk/snippets/getting-started/hello-lua.snippet.md
new file mode 100644
index 00000000..e3c32853
--- /dev/null
+++ b/snippets/sdks/lua-server-sdk/snippets/getting-started/hello-lua.snippet.md
@@ -0,0 +1,39 @@
+---
+id: lua-server-sdk/getting-started/hello-lua
+sdk: lua-server-sdk
+kind: hello-world
+lang: lua
+file: hello.lua
+description: Hello-world program that initializes the Lua server SDK and evaluates a feature flag.
+inputs:
+  apiKey:
+    type: sdk-key
+    description: SDK key baked into the rendered source.
+  featureKey:
+    type: flag-key
+    description: Default flag key baked into the rendered source.
+ld-application:
+  slot: hello-lua
+validation:
+  runtime: lua-server
+  entrypoint: hello.lua
+---
+
+Create a file named `hello.lua` and add the following code:
+
+```lua
+local ld = require("launchdarkly_server_sdk")
+local config = {}
+
+local client = ld.clientInit("{{ apiKey }}", 1000, config)
+
+local user = ld.makeContext({
+    user = {
+        key = "example-user-key",
+        name = "Sandy"
+    }
+})
+
+local value = client:boolVariation(user, "{{ featureKey }}", false)
+print("*** The '{{ featureKey }}' feature flag evaluates to "..tostring(value)..".")
+```
diff --git a/snippets/sdks/lua-server-sdk/snippets/getting-started/luarocks-install.snippet.md b/snippets/sdks/lua-server-sdk/snippets/getting-started/luarocks-install.snippet.md
new file mode 100644
index 00000000..6e68f9c1
--- /dev/null
+++ b/snippets/sdks/lua-server-sdk/snippets/getting-started/luarocks-install.snippet.md
@@ -0,0 +1,15 @@
+---
+id: lua-server-sdk/getting-started/luarocks-install
+sdk: lua-server-sdk
+kind: install
+lang: bash
+description: Install the Lua server SDK via luarocks.
+ld-application:
+  slot: luarocks-install
+---
+
+Download the Lua Server SDK and build it with `luarocks` (replace `LD_DIR` with the path to the C++ SDK's shared libraries as necessary):
+
+```bash
+luarocks install launchdarkly-server-sdk LD_DIR="$(pwd)/cpp-sdks/build/install"
+```
diff --git a/snippets/sdks/lua-server-sdk/snippets/getting-started/run.snippet.md b/snippets/sdks/lua-server-sdk/snippets/getting-started/run.snippet.md
new file mode 100644
index 00000000..b30e2ebe
--- /dev/null
+++ b/snippets/sdks/lua-server-sdk/snippets/getting-started/run.snippet.md
@@ -0,0 +1,15 @@
+---
+id: lua-server-sdk/getting-started/run
+sdk: lua-server-sdk
+kind: run
+lang: bash
+description: Run the Lua program.
+ld-application:
+  slot: run
+---
+
+Run:
+
+```bash
+lua hello.lua
+```
diff --git a/snippets/sdks/node-client-sdk/sdk.yaml b/snippets/sdks/node-client-sdk/sdk.yaml
new file mode 100644
index 00000000..bf402bb8
--- /dev/null
+++ b/snippets/sdks/node-client-sdk/sdk.yaml
@@ -0,0 +1,14 @@
+id: node-client-sdk
+sdk-meta-id: node-client
+display-name: Node.js (client-side)
+type: client-side
+languages:
+  - id: javascript
+    extensions: [".js"]
+package-managers: [npm]
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  get-started-file: static/ld/components/getStarted/sdk/nodeClient.tsx
+docs:
+  reference-page: /sdk/client-side/node-js
+hello-world-repo: launchdarkly/hello-node-client
diff --git a/snippets/sdks/node-client-sdk/snippets/getting-started/index-js.snippet.md b/snippets/sdks/node-client-sdk/snippets/getting-started/index-js.snippet.md
new file mode 100644
index 00000000..3f7e834a
--- /dev/null
+++ b/snippets/sdks/node-client-sdk/snippets/getting-started/index-js.snippet.md
@@ -0,0 +1,57 @@
+---
+id: node-client-sdk/getting-started/index-js
+sdk: node-client-sdk
+kind: hello-world
+lang: javascript
+file: index.js
+description: Hello-world program that initializes the Node.js client SDK and evaluates a feature flag.
+inputs:
+  environmentId:
+    type: client-side-id
+    description: Client-side ID baked into the rendered source. Validation reads LAUNCHDARKLY_CLIENT_SIDE_ID at runtime.
+  featureKey:
+    type: flag-key
+    description: Default flag key baked into the rendered source. Validation reads LAUNCHDARKLY_FLAG_KEY at runtime.
+ld-application:
+  slot: index-js
+validation:
+  runtime: node
+  requirements: launchdarkly-node-client-sdk
+---
+
+Create a file called `index.js` and add the following code:
+
+```javascript
+// Import the LaunchDarkly client
+var LaunchDarkly = require('launchdarkly-node-client-sdk');
+
+// Set up the user properties. This user should appear on your LaunchDarkly users dashboard
+// soon after you run the demo.
+var user = {
+  key: "example-user-key"
+};
+
+// Create a single instance of the LaunchDarkly client
+const ldClient = LaunchDarkly.initialize('{{ environmentId }}', user);
+
+function showMessage(s) {
+  console.log("*** " + s);
+  console.log("");
+}
+ldClient.waitForInitialization().then(function() {
+  showMessage("SDK successfully initialized!");
+  const flagValue = ldClient.variation("{{ featureKey }}", false);
+
+  showMessage("The '" + "{{ featureKey }}" + "' feature flag evaluates to " + flagValue + ".");
+
+  // Here we ensure that the SDK shuts down cleanly and has a chance to deliver analytics
+  // events to LaunchDarkly before the program exits. If analytics events are not delivered,
+  // the user properties and flag usage statistics will not appear on your dashboard. In a
+  // normal long-running application, the SDK would continue running and events would be
+  // delivered automatically in the background.
+  ldClient.close();
+}).catch(function(error) {
+  showMessage("SDK failed to initialize: " + error);
+  process.exit(1);
+});
+```
diff --git a/snippets/sdks/node-client-sdk/snippets/getting-started/install.snippet.md b/snippets/sdks/node-client-sdk/snippets/getting-started/install.snippet.md
new file mode 100644
index 00000000..2fa48059
--- /dev/null
+++ b/snippets/sdks/node-client-sdk/snippets/getting-started/install.snippet.md
@@ -0,0 +1,20 @@
+---
+id: node-client-sdk/getting-started/install
+sdk: node-client-sdk
+kind: install
+lang: shell
+description: Install the Node.js client SDK.
+inputs:
+  version:
+    type: string
+    description: Optional pinned SDK version; when empty the pin is omitted.
+    runtime-default: ""
+ld-application:
+  slot: install
+---
+
+Next, install the LaunchDarkly SDK:
+
+```shell
+npm install launchdarkly-node-client-sdk{{ if version }}@{{ version }}{{ end }} --save
+```
diff --git a/snippets/sdks/node-client-sdk/snippets/getting-started/mkdir.snippet.md b/snippets/sdks/node-client-sdk/snippets/getting-started/mkdir.snippet.md
new file mode 100644
index 00000000..7d852056
--- /dev/null
+++ b/snippets/sdks/node-client-sdk/snippets/getting-started/mkdir.snippet.md
@@ -0,0 +1,15 @@
+---
+id: node-client-sdk/getting-started/mkdir
+sdk: node-client-sdk
+kind: bootstrap
+lang: shell
+description: Create the project directory and a package.json.
+ld-application:
+  slot: mkdir
+---
+
+Create a new directory and create a `package.json` file:
+
+```shell
+mkdir hello-node-client && cd hello-node-client && npm init
+```
diff --git a/snippets/sdks/node-client-sdk/snippets/getting-started/run.snippet.md b/snippets/sdks/node-client-sdk/snippets/getting-started/run.snippet.md
new file mode 100644
index 00000000..f6681858
--- /dev/null
+++ b/snippets/sdks/node-client-sdk/snippets/getting-started/run.snippet.md
@@ -0,0 +1,15 @@
+---
+id: node-client-sdk/getting-started/run
+sdk: node-client-sdk
+kind: run
+lang: shell
+description: Run the program.
+ld-application:
+  slot: run
+---
+
+Run:
+
+```shell
+node index.js
+```
diff --git a/snippets/sdks/node-server-sdk/sdk.yaml b/snippets/sdks/node-server-sdk/sdk.yaml
new file mode 100644
index 00000000..56251c30
--- /dev/null
+++ b/snippets/sdks/node-server-sdk/sdk.yaml
@@ -0,0 +1,14 @@
+id: node-server-sdk
+sdk-meta-id: node-server
+display-name: Node.js (server-side)
+type: server-side
+languages:
+  - id: javascript
+    extensions: [".js"]
+package-managers: [npm]
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  get-started-file: static/ld/components/getStarted/sdk/nodeServer.tsx
+docs:
+  reference-page: /sdk/server-side/node-js
+hello-world-repo: launchdarkly/hello-node-server
diff --git a/snippets/sdks/node-server-sdk/snippets/getting-started/index-js.snippet.md b/snippets/sdks/node-server-sdk/snippets/getting-started/index-js.snippet.md
new file mode 100644
index 00000000..dd78648f
--- /dev/null
+++ b/snippets/sdks/node-server-sdk/snippets/getting-started/index-js.snippet.md
@@ -0,0 +1,88 @@
+---
+id: node-server-sdk/getting-started/index-js
+sdk: node-server-sdk
+kind: hello-world
+lang: javascript
+file: index.js
+description: Hello-world program that initializes the Node.js server SDK and watches a feature flag.
+inputs:
+  featureKey:
+    type: flag-key
+    description: Default flag key baked into the rendered source. Validation reads LAUNCHDARKLY_FLAG_KEY at runtime.
+ld-application:
+  slot: index-js
+validation:
+  runtime: node
+  requirements: '@launchdarkly/node-server-sdk'
+---
+
+Create a file called `index.js` and add the following code:
+
+```javascript
+const LaunchDarkly = require('@launchdarkly/node-server-sdk');
+
+// Set sdkKey to your LaunchDarkly SDK key.
+const sdkKey = process.env.LAUNCHDARKLY_SDK_KEY ?? 'your-sdk-key';
+
+// Set featureFlagKey to the feature flag key you want to evaluate.
+const featureFlagKey = '{{ featureKey }}';
+
+function showBanner() {
+  console.log(
+    `      ██
+          ██
+      ████████
+         ███████
+██ LAUNCHDARKLY █
+         ███████
+      ████████
+          ██
+        ██
+`,
+  );
+}
+
+function printValueAndBanner(flagValue) {
+  console.log(`*** The '${featureFlagKey}' feature flag evaluates to ${flagValue}.`);
+
+  if (flagValue) showBanner();
+}
+
+if (!sdkKey) {
+  console.log('*** Please edit index.js to set sdkKey to your LaunchDarkly SDK key first.');
+  process.exit(1);
+}
+
+const ldClient = LaunchDarkly.init(sdkKey);
+
+// Set up the context properties. This context should appear on your LaunchDarkly contexts dashboard
+// soon after you run the demo.
+const context = {
+  kind: 'user',
+  key: 'example-user-key',
+  name: 'Sandy',
+};
+
+ldClient
+  .waitForInitialization()
+  .then(() => {
+    console.log('*** SDK successfully initialized!');
+
+    const eventKey = `update:${featureFlagKey}`;
+    ldClient.on(eventKey, () => {
+      ldClient.variation(featureFlagKey, context, false).then(printValueAndBanner);
+    });
+
+    ldClient.variation(featureFlagKey, context, false).then((flagValue) => {
+      printValueAndBanner(flagValue);
+
+      if(typeof process.env.CI !== "undefined") {
+        process.exit(0);
+      }
+    });
+  })
+  .catch((error) => {
+    console.log(`*** SDK failed to initialize: ${error}`);
+    process.exit(1);
+  });
+```
diff --git a/snippets/sdks/node-server-sdk/snippets/getting-started/install.snippet.md b/snippets/sdks/node-server-sdk/snippets/getting-started/install.snippet.md
new file mode 100644
index 00000000..0c39e6be
--- /dev/null
+++ b/snippets/sdks/node-server-sdk/snippets/getting-started/install.snippet.md
@@ -0,0 +1,20 @@
+---
+id: node-server-sdk/getting-started/install
+sdk: node-server-sdk
+kind: install
+lang: shell
+description: Install the Node.js server SDK.
+inputs:
+  version:
+    type: string
+    description: Optional pinned SDK version; when empty the pin is omitted.
+    runtime-default: ""
+ld-application:
+  slot: install
+---
+
+Next, install the LaunchDarkly SDK:
+
+```shell
+npm install @launchdarkly/node-server-sdk{{ if version }}@{{ version }}{{ end }} --save
+```
diff --git a/snippets/sdks/node-server-sdk/snippets/getting-started/mkdir.snippet.md b/snippets/sdks/node-server-sdk/snippets/getting-started/mkdir.snippet.md
new file mode 100644
index 00000000..cf618c86
--- /dev/null
+++ b/snippets/sdks/node-server-sdk/snippets/getting-started/mkdir.snippet.md
@@ -0,0 +1,15 @@
+---
+id: node-server-sdk/getting-started/mkdir
+sdk: node-server-sdk
+kind: bootstrap
+lang: shell
+description: Create the project directory and a package.json.
+ld-application:
+  slot: mkdir
+---
+
+Create a new directory and create a `package.json` file:
+
+```shell
+mkdir hello-node-server && cd hello-node-server && npm init
+```
diff --git a/snippets/sdks/node-server-sdk/snippets/getting-started/run.snippet.md b/snippets/sdks/node-server-sdk/snippets/getting-started/run.snippet.md
new file mode 100644
index 00000000..15decb8f
--- /dev/null
+++ b/snippets/sdks/node-server-sdk/snippets/getting-started/run.snippet.md
@@ -0,0 +1,19 @@
+---
+id: node-server-sdk/getting-started/run
+sdk: node-server-sdk
+kind: run
+lang: shell
+description: Run the program with the SDK key in the environment.
+inputs:
+  apiKey:
+    type: sdk-key
+    description: SDK key embedded in the rendered Run command.
+ld-application:
+  slot: run
+---
+
+Run:
+
+```shell
+LAUNCHDARKLY_SDK_KEY={{ apiKey }} node index.js
+```
diff --git a/snippets/sdks/php-server-sdk/sdk.yaml b/snippets/sdks/php-server-sdk/sdk.yaml
new file mode 100644
index 00000000..4d18f668
--- /dev/null
+++ b/snippets/sdks/php-server-sdk/sdk.yaml
@@ -0,0 +1,14 @@
+id: php-server-sdk
+sdk-meta-id: php
+display-name: PHP
+type: server-side
+languages:
+  - id: php
+    extensions: [".php"]
+package-managers: [composer]
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  get-started-file: static/ld/components/getStarted/sdk/php.tsx
+docs:
+  reference-page: /sdk/server-side/php
+hello-world-repo: launchdarkly/hello-php
diff --git a/snippets/sdks/php-server-sdk/snippets/getting-started/install.snippet.md b/snippets/sdks/php-server-sdk/snippets/getting-started/install.snippet.md
new file mode 100644
index 00000000..d6d0893d
--- /dev/null
+++ b/snippets/sdks/php-server-sdk/snippets/getting-started/install.snippet.md
@@ -0,0 +1,20 @@
+---
+id: php-server-sdk/getting-started/install
+sdk: php-server-sdk
+kind: install
+lang: shell
+description: Install the LaunchDarkly SDK and Guzzle via composer.
+inputs:
+  version:
+    type: string
+    description: Optional pinned SDK version; when empty the pin is omitted.
+    runtime-default: ""
+ld-application:
+  slot: install
+---
+
+Next, install the LaunchDarkly SDK and Guzzle dependency:
+
+```shell
+php composer.phar require launchdarkly/server-sdk{{ if version }}:{{ version }}{{ end }} guzzlehttp/guzzle
+```
diff --git a/snippets/sdks/php-server-sdk/snippets/getting-started/main-php.snippet.md b/snippets/sdks/php-server-sdk/snippets/getting-started/main-php.snippet.md
new file mode 100644
index 00000000..ffad0111
--- /dev/null
+++ b/snippets/sdks/php-server-sdk/snippets/getting-started/main-php.snippet.md
@@ -0,0 +1,89 @@
+---
+id: php-server-sdk/getting-started/main-php
+sdk: php-server-sdk
+kind: hello-world
+lang: php
+file: main.php
+description: Hello-world program that initializes the PHP server SDK and watches a feature flag.
+inputs:
+  featureKey:
+    type: flag-key
+    description: Default flag key baked into the rendered source. Validation reads LAUNCHDARKLY_FLAG_KEY at runtime.
+ld-application:
+  slot: main-php
+validation:
+  runtime: php
+  requirements: |
+    launchdarkly/server-sdk
+    guzzlehttp/guzzle
+---
+
+Create a file called `main.php` and add the following code:
+
+```php
+<?php
+
+require 'vendor/autoload.php';
+
+function showEvaluationResult(string $key, bool $value) {
+  echo PHP_EOL;
+  echo sprintf("*** %s: The %s feature flag evaluates to %s", date("h:i:s"), $key, $value ? 'true' : 'false');
+  echo PHP_EOL;
+}
+
+function showBanner() {
+  echo PHP_EOL;
+  echo "        ██       " . PHP_EOL;
+  echo "          ██     " . PHP_EOL;
+  echo "      ████████   " . PHP_EOL;
+  echo "         ███████ " . PHP_EOL;
+  echo "██ LAUNCHDARKLY █" . PHP_EOL;
+  echo "         ███████ " . PHP_EOL;
+  echo "      ████████   " . PHP_EOL;
+  echo "          ██     " . PHP_EOL;
+  echo "        ██       " . PHP_EOL;
+  echo PHP_EOL;
+}
+
+// Set $sdkKey to your LaunchDarkly SDK key.
+$sdkKey = getenv("LAUNCHDARKLY_SDK_KEY") ?? "";
+
+// Set $featureFlagKey to the feature flag key you want to evaluate.
+$featureFlagKey = "{{ featureKey }}";
+
+
+if (!$sdkKey) {
+echo "*** Please set the environment variable LAUNCHDARKLY_SDK_KEY to your LaunchDarkly SDK key first" . PHP_EOL . PHP_EOL;
+exit(1);
+} else if (!$featureFlagKey) {
+echo "*** Please set the environment variable LAUNCHDARKLY_FLAG_KEY to a boolean flag first" . PHP_EOL . PHP_EOL;
+exit(1);
+}
+
+$client = new LaunchDarkly\LDClient($sdkKey);
+
+// Set up the evaluation context. This context should appear on your LaunchDarkly contexts dashboard soon after you run the demo.
+$context = LaunchDarkly\LDContext::builder("example-user-key")
+->kind("user")
+->name("Sandy")
+->build();
+
+
+$showBanner = true;
+$lastValue = null;
+do {
+  $flagValue = $client->variation($featureFlagKey, $context, false);
+
+  if ($flagValue !== $lastValue) {
+      showEvaluationResult($featureFlagKey, $flagValue);
+  }
+
+  if ($showBanner && $flagValue) {
+      showBanner();
+      $showBanner = false;
+  }
+
+  $lastValue = $flagValue;
+  sleep(1);
+} while(true);
+```
diff --git a/snippets/sdks/php-server-sdk/snippets/getting-started/mkdir.snippet.md b/snippets/sdks/php-server-sdk/snippets/getting-started/mkdir.snippet.md
new file mode 100644
index 00000000..68ea1e99
--- /dev/null
+++ b/snippets/sdks/php-server-sdk/snippets/getting-started/mkdir.snippet.md
@@ -0,0 +1,15 @@
+---
+id: php-server-sdk/getting-started/mkdir
+sdk: php-server-sdk
+kind: bootstrap
+lang: shell
+description: Create the project directory and install Composer.
+ld-application:
+  slot: mkdir
+---
+
+Create a new directory and install [Composer](https://getcomposer.org/):
+
+```shell
+mkdir hello-php && cd hello-php && curl -sS https://getcomposer.org/installer | php
+```
diff --git a/snippets/sdks/php-server-sdk/snippets/getting-started/run.snippet.md b/snippets/sdks/php-server-sdk/snippets/getting-started/run.snippet.md
new file mode 100644
index 00000000..6687980d
--- /dev/null
+++ b/snippets/sdks/php-server-sdk/snippets/getting-started/run.snippet.md
@@ -0,0 +1,19 @@
+---
+id: php-server-sdk/getting-started/run
+sdk: php-server-sdk
+kind: run
+lang: shell
+description: Run the program with the SDK key in the environment.
+inputs:
+  apiKey:
+    type: sdk-key
+    description: SDK key embedded in the rendered Run command.
+ld-application:
+  slot: run
+---
+
+Run:
+
+```shell
+LAUNCHDARKLY_SDK_KEY='{{ apiKey }}' php main.php
+```
diff --git a/snippets/sdks/react-client-sdk/sdk.yaml b/snippets/sdks/react-client-sdk/sdk.yaml
new file mode 100644
index 00000000..449df516
--- /dev/null
+++ b/snippets/sdks/react-client-sdk/sdk.yaml
@@ -0,0 +1,23 @@
+id: react-client-sdk
+sdk-meta-id: react-web
+display-name: React (web)
+type: client-side
+languages:
+  - id: tsx
+    extensions: [".tsx"]
+  - id: jsx
+    extensions: [".jsx"]
+package-managers: [npm, yarn]
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  # Two get-started variants live side-by-side in gonfalon: the legacy
+  # create-react-app flow (legacy.tsx) and the createApp/Vite flow
+  # (createApp.tsx). Both use standard JSX template-literal interpolation
+  # with the `${camelCase(featureKey)}` pattern, so both render via
+  # render markers.
+  get-started-files:
+    - static/ld/components/getStarted/sdk/react/legacy.tsx
+    - static/ld/components/getStarted/sdk/react/createApp.tsx
+docs:
+  reference-page: /sdk/client-side/react/react-web
+hello-world-repo: launchdarkly-labs/react-ts
diff --git a/snippets/sdks/react-client-sdk/snippets/getting-started/app-tsx.snippet.md b/snippets/sdks/react-client-sdk/snippets/getting-started/app-tsx.snippet.md
new file mode 100644
index 00000000..d3764986
--- /dev/null
+++ b/snippets/sdks/react-client-sdk/snippets/getting-started/app-tsx.snippet.md
@@ -0,0 +1,36 @@
+---
+id: react-client-sdk/getting-started/app-tsx
+sdk: react-client-sdk
+kind: hello-world
+lang: tsx
+file: src/App.tsx
+description: App component that uses useFlags to render the flag value.
+inputs:
+  featureKey:
+    type: flag-key
+    description: Default flag key (camelCased) baked into the rendered source.
+ld-application:
+  slot: app-tsx
+validation:
+  runtime: react-client
+  entrypoint: src/App.tsx
+  companions: [react-client-sdk/getting-started/main-tsx]
+---
+
+Use the `useFlags` hook to evaluate flags. For example, in `App.tsx`:
+
+```tsx
+import { useFlags } from 'launchdarkly-react-client-sdk';
+
+function App() {
+  const { {{ featureKey | camelCase }} } = useFlags();
+
+  return (
+    <div style={{ backgroundColor: {{ featureKey | camelCase }} ? 'green' : 'red' }}>
+      The {{ featureKey | camelCase }} feature flag evaluates to <b>{ {{ featureKey | camelCase }} ? 'true' : 'false'}</b>
+    </div>
+  );
+}
+
+export default App;
+```
diff --git a/snippets/sdks/react-client-sdk/snippets/getting-started/create-vite.snippet.md b/snippets/sdks/react-client-sdk/snippets/getting-started/create-vite.snippet.md
new file mode 100644
index 00000000..f83e807b
--- /dev/null
+++ b/snippets/sdks/react-client-sdk/snippets/getting-started/create-vite.snippet.md
@@ -0,0 +1,15 @@
+---
+id: react-client-sdk/getting-started/create-vite
+sdk: react-client-sdk
+kind: bootstrap
+lang: shell
+description: Bootstrap a React+TypeScript app with create-vite (createApp variant).
+ld-application:
+  slot: create-vite
+---
+
+Use `create-vite` to create a new React Typescript application:
+
+```shell
+npm create vite@latest hello-react-ts -- --template react-ts && cd hello-react-ts
+```
diff --git a/snippets/sdks/react-client-sdk/snippets/getting-started/install.snippet.md b/snippets/sdks/react-client-sdk/snippets/getting-started/install.snippet.md
new file mode 100644
index 00000000..d1199c93
--- /dev/null
+++ b/snippets/sdks/react-client-sdk/snippets/getting-started/install.snippet.md
@@ -0,0 +1,15 @@
+---
+id: react-client-sdk/getting-started/install
+sdk: react-client-sdk
+kind: install
+lang: shell
+description: Install the LaunchDarkly React SDK.
+ld-application:
+  slot: install
+---
+
+Install the LaunchDarkly SDK:
+
+```shell
+npm i --save launchdarkly-react-client-sdk
+```
diff --git a/snippets/sdks/react-client-sdk/snippets/getting-started/legacy-app-tsx.snippet.md b/snippets/sdks/react-client-sdk/snippets/getting-started/legacy-app-tsx.snippet.md
new file mode 100644
index 00000000..d0ea28cf
--- /dev/null
+++ b/snippets/sdks/react-client-sdk/snippets/getting-started/legacy-app-tsx.snippet.md
@@ -0,0 +1,39 @@
+---
+id: react-client-sdk/getting-started/legacy-app-tsx
+sdk: react-client-sdk
+kind: hello-world
+lang: tsx
+file: src/App.tsx
+description: CRA App.tsx (legacy variant) using useFlags to render the flag value.
+inputs:
+  featureKey:
+    type: flag-key
+    description: Default flag key (camelCased) baked into the rendered source. Note that gonfalon camel-cases the supplied flag key before substituting; for validation we use the env-var value as-is.
+ld-application:
+  slot: legacy-app-tsx
+validation:
+  runtime: react-client
+  entrypoint: src/App.tsx
+  companions: [react-client-sdk/getting-started/legacy-index-tsx]
+---
+
+In `App.tsx`:
+
+```tsx
+import './App.css';
+import { useFlags } from 'launchdarkly-react-client-sdk';
+
+function App() {
+  const { {{ featureKey | camelCase }} } = useFlags();
+
+  return (
+      <div className="App">
+        <header className="App-header" style={{backgroundColor: {{ featureKey | camelCase }} ? '#00844B' : '#373841'}}>
+            <p>The {{ featureKey | camelCase }} feature flag evaluates to <b>{ {{ featureKey | camelCase }} ? 'True' : 'False'}</b></p>
+        </header>
+      </div>
+  );
+}
+
+export default App;
+```
diff --git a/snippets/sdks/react-client-sdk/snippets/getting-started/legacy-create.snippet.md b/snippets/sdks/react-client-sdk/snippets/getting-started/legacy-create.snippet.md
new file mode 100644
index 00000000..5ea5c831
--- /dev/null
+++ b/snippets/sdks/react-client-sdk/snippets/getting-started/legacy-create.snippet.md
@@ -0,0 +1,15 @@
+---
+id: react-client-sdk/getting-started/legacy-create
+sdk: react-client-sdk
+kind: bootstrap
+lang: shell
+description: Bootstrap a React TypeScript app with create-react-app (legacy variant).
+ld-application:
+  slot: legacy-create
+---
+
+Use `create-react-app` to create a new React application:
+
+```shell
+npx create-react-app hello-react --template typescript && cd hello-react
+```
diff --git a/snippets/sdks/react-client-sdk/snippets/getting-started/legacy-index-tsx.snippet.md b/snippets/sdks/react-client-sdk/snippets/getting-started/legacy-index-tsx.snippet.md
new file mode 100644
index 00000000..1727c20b
--- /dev/null
+++ b/snippets/sdks/react-client-sdk/snippets/getting-started/legacy-index-tsx.snippet.md
@@ -0,0 +1,44 @@
+---
+id: react-client-sdk/getting-started/legacy-index-tsx
+sdk: react-client-sdk
+kind: hello-world
+lang: tsx
+file: src/index.tsx
+description: CRA index.tsx (legacy variant) wrapping the app with asyncWithLDProvider.
+inputs:
+  environmentId:
+    type: client-side-id
+    description: Client-side ID baked into the rendered source.
+ld-application:
+  slot: legacy-index-tsx
+---
+
+In `index.tsx`:
+
+```tsx
+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import './index.css';
+import App from './App';
+import { asyncWithLDProvider } from 'launchdarkly-react-client-sdk';
+
+(async () => {
+  const LDProvider = await asyncWithLDProvider({
+    clientSideID: '{{ environmentId }}',
+    context: {
+      kind: 'user',
+      key: 'example-user-key',
+      name: 'Sandy',
+    },
+  });
+
+  const root = ReactDOM.createRoot(document.getElementById('root') as HTMLElement);
+  root.render(
+    <React.StrictMode>
+      <LDProvider>
+        <App />
+      </LDProvider>
+    </React.StrictMode>,
+  );
+})();
+```
diff --git a/snippets/sdks/react-client-sdk/snippets/getting-started/legacy-install.snippet.md b/snippets/sdks/react-client-sdk/snippets/getting-started/legacy-install.snippet.md
new file mode 100644
index 00000000..d2b074c7
--- /dev/null
+++ b/snippets/sdks/react-client-sdk/snippets/getting-started/legacy-install.snippet.md
@@ -0,0 +1,20 @@
+---
+id: react-client-sdk/getting-started/legacy-install
+sdk: react-client-sdk
+kind: install
+lang: shell
+description: Install the LaunchDarkly React SDK (legacy variant — versioned npm install).
+inputs:
+  version:
+    type: string
+    description: Optional pinned SDK version; when empty the pin is omitted.
+    runtime-default: ""
+ld-application:
+  slot: legacy-install
+---
+
+Install the LaunchDarkly SDK:
+
+```shell
+npm install --save launchdarkly-react-client-sdk{{ if version }}@{{ version }}{{ end }}
+```
diff --git a/snippets/sdks/react-client-sdk/snippets/getting-started/legacy-run.snippet.md b/snippets/sdks/react-client-sdk/snippets/getting-started/legacy-run.snippet.md
new file mode 100644
index 00000000..f2d78b69
--- /dev/null
+++ b/snippets/sdks/react-client-sdk/snippets/getting-started/legacy-run.snippet.md
@@ -0,0 +1,13 @@
+---
+id: react-client-sdk/getting-started/legacy-run
+sdk: react-client-sdk
+kind: run
+lang: bash
+description: Start the create-react-app dev server.
+ld-application:
+  slot: legacy-run
+---
+
+```bash
+npm start
+```
diff --git a/snippets/sdks/react-client-sdk/snippets/getting-started/main-tsx.snippet.md b/snippets/sdks/react-client-sdk/snippets/getting-started/main-tsx.snippet.md
new file mode 100644
index 00000000..29b1e1d0
--- /dev/null
+++ b/snippets/sdks/react-client-sdk/snippets/getting-started/main-tsx.snippet.md
@@ -0,0 +1,34 @@
+---
+id: react-client-sdk/getting-started/main-tsx
+sdk: react-client-sdk
+kind: hello-world
+lang: tsx
+file: src/main.tsx
+description: Vite-app entrypoint that wraps the React app with LDProvider.
+inputs:
+  environmentId:
+    type: client-side-id
+    description: Client-side ID baked into the rendered source.
+ld-application:
+  slot: main-tsx
+---
+
+In `main.tsx`, wrap your application with `LDProvider`:
+
+```tsx
+import { StrictMode } from 'react';
+import { createRoot } from 'react-dom/client';
+import { LDProvider } from 'launchdarkly-react-client-sdk';
+import App from './App';
+
+createRoot(document.getElementById('root')!).render(
+  <StrictMode>
+    <LDProvider
+      clientSideID="{{ environmentId }}"
+      context={{ kind: 'user', key: 'example-user-key', name: 'Sandy' }}
+    >
+      <App />
+    </LDProvider>
+  </StrictMode>,
+);
+```
diff --git a/snippets/sdks/react-client-sdk/snippets/getting-started/run-dev.snippet.md b/snippets/sdks/react-client-sdk/snippets/getting-started/run-dev.snippet.md
new file mode 100644
index 00000000..50cdd763
--- /dev/null
+++ b/snippets/sdks/react-client-sdk/snippets/getting-started/run-dev.snippet.md
@@ -0,0 +1,15 @@
+---
+id: react-client-sdk/getting-started/run-dev
+sdk: react-client-sdk
+kind: run
+lang: shell
+description: Start the Vite dev server.
+ld-application:
+  slot: run-dev
+---
+
+Run the app:
+
+```shell
+npm run dev
+```
diff --git a/snippets/sdks/react-native-client-sdk/sdk.yaml b/snippets/sdks/react-native-client-sdk/sdk.yaml
new file mode 100644
index 00000000..21c4938a
--- /dev/null
+++ b/snippets/sdks/react-native-client-sdk/sdk.yaml
@@ -0,0 +1,14 @@
+id: react-native-client-sdk
+sdk-meta-id: react-native
+display-name: React Native
+type: client-side
+languages:
+  - id: tsx
+    extensions: [".tsx"]
+package-managers: [npm, yarn]
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  get-started-file: static/ld/components/getStarted/sdk/reactNative.tsx
+docs:
+  reference-page: /sdk/client-side/react-native
+hello-world-repo: launchdarkly/js-core
diff --git a/snippets/sdks/react-native-client-sdk/snippets/getting-started/app-tsx.snippet.md b/snippets/sdks/react-native-client-sdk/snippets/getting-started/app-tsx.snippet.md
new file mode 100644
index 00000000..606c912a
--- /dev/null
+++ b/snippets/sdks/react-native-client-sdk/snippets/getting-started/app-tsx.snippet.md
@@ -0,0 +1,52 @@
+---
+id: react-native-client-sdk/getting-started/app-tsx
+sdk: react-native-client-sdk
+kind: hello-world
+lang: tsx
+file: App.tsx
+description: Root component that wires the LDProvider with the React Native client.
+inputs:
+  mobileKey:
+    type: mobile-key
+    description: Mobile key baked into the rendered source.
+ld-application:
+  slot: app-tsx
+validation:
+  runtime: react-native-client
+  entrypoint: App.tsx
+  companions: [react-native-client-sdk/getting-started/welcome-tsx]
+---
+
+In `App.tsx`:
+
+```tsx
+import {
+  AutoEnvAttributes,
+  LDProvider,
+  ReactNativeLDClient,
+} from '@launchdarkly/react-native-client-sdk';
+
+import Welcome from './src/welcome';
+
+const featureClient = new ReactNativeLDClient(
+  '{{ mobileKey }}',
+  AutoEnvAttributes.Enabled,
+  {
+    debug: true,
+    applicationInfo: {
+      id: 'ld-rn-test-app',
+      version: '0.0.1',
+    },
+  },
+);
+
+const App = () => {
+  return (
+    <LDProvider client={featureClient}>
+      <Welcome />
+    </LDProvider>
+  );
+};
+
+export default App;
+```
diff --git a/snippets/sdks/react-native-client-sdk/snippets/getting-started/create-expo.snippet.md b/snippets/sdks/react-native-client-sdk/snippets/getting-started/create-expo.snippet.md
new file mode 100644
index 00000000..950d3985
--- /dev/null
+++ b/snippets/sdks/react-native-client-sdk/snippets/getting-started/create-expo.snippet.md
@@ -0,0 +1,15 @@
+---
+id: react-native-client-sdk/getting-started/create-expo
+sdk: react-native-client-sdk
+kind: bootstrap
+lang: shell
+description: Bootstrap an Expo React Native TypeScript app.
+ld-application:
+  slot: create-expo
+---
+
+Use `create-expo-app` to create a new Expo application:
+
+```shell
+npx create-expo-app hello-react-native -t expo-template-blank-typescript && cd hello-react-native
+```
diff --git a/snippets/sdks/react-native-client-sdk/snippets/getting-started/install.snippet.md b/snippets/sdks/react-native-client-sdk/snippets/getting-started/install.snippet.md
new file mode 100644
index 00000000..b6776869
--- /dev/null
+++ b/snippets/sdks/react-native-client-sdk/snippets/getting-started/install.snippet.md
@@ -0,0 +1,15 @@
+---
+id: react-native-client-sdk/getting-started/install
+sdk: react-native-client-sdk
+kind: install
+lang: shell
+description: Install the LaunchDarkly React Native SDK.
+ld-application:
+  slot: install
+---
+
+Install the LaunchDarkly SDK:
+
+```shell
+yarn add @launchdarkly/react-native-client-sdk
+```
diff --git a/snippets/sdks/react-native-client-sdk/snippets/getting-started/run.snippet.md b/snippets/sdks/react-native-client-sdk/snippets/getting-started/run.snippet.md
new file mode 100644
index 00000000..04fc0903
--- /dev/null
+++ b/snippets/sdks/react-native-client-sdk/snippets/getting-started/run.snippet.md
@@ -0,0 +1,15 @@
+---
+id: react-native-client-sdk/getting-started/run
+sdk: react-native-client-sdk
+kind: run
+lang: shell
+description: Run the React Native app on iOS via yarn.
+ld-application:
+  slot: run
+---
+
+Run:
+
+```shell
+yarn ios
+```
diff --git a/snippets/sdks/react-native-client-sdk/snippets/getting-started/welcome-tsx.snippet.md b/snippets/sdks/react-native-client-sdk/snippets/getting-started/welcome-tsx.snippet.md
new file mode 100644
index 00000000..d66d45c9
--- /dev/null
+++ b/snippets/sdks/react-native-client-sdk/snippets/getting-started/welcome-tsx.snippet.md
@@ -0,0 +1,42 @@
+---
+id: react-native-client-sdk/getting-started/welcome-tsx
+sdk: react-native-client-sdk
+kind: hello-world
+lang: tsx
+file: src/welcome.tsx
+description: Welcome component that evaluates the flag and renders the value.
+inputs:
+  featureKey:
+    type: flag-key
+    description: Default flag key baked into the rendered source.
+ld-application:
+  slot: welcome-tsx
+---
+
+Create a new file `src/welcome.tsx`:
+
+```tsx
+import {useEffect} from 'react';
+import {Text, View} from 'react-native';
+
+import {useBoolVariation, useLDClient} from '@launchdarkly/react-native-client-sdk';
+
+export default function Welcome() {
+    const flagValue = useBoolVariation('{{ featureKey }}', false);
+    const ldc = useLDClient();
+
+    useEffect(() => {
+        ldc
+            .identify({kind: 'user', key: 'example-user-key', name: 'Sandy'})
+            .catch((e: any) => console.error('error: ' + e));
+    }, []);
+
+    return (
+        <View style={{height: '100%', backgroundColor: flagValue ? '#00844B' : '#373841'}}>
+            <Text style={{marginTop: 160, color: 'white', textAlign: 'center'}}>The {{ featureKey }} feature flag
+                evaluates to <Text
+                    style={{fontWeight: 'bold'}}>{flagValue ? 'true' : 'false'}</Text></Text>
+        </View>
+    );
+}
+```
diff --git a/snippets/sdks/roku-client-sdk/sdk.yaml b/snippets/sdks/roku-client-sdk/sdk.yaml
new file mode 100644
index 00000000..694416be
--- /dev/null
+++ b/snippets/sdks/roku-client-sdk/sdk.yaml
@@ -0,0 +1,14 @@
+id: roku-client-sdk
+sdk-meta-id: roku
+display-name: Roku
+type: client-side
+languages:
+  - id: brightscript
+    extensions: [".brs"]
+package-managers: []
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  get-started-file: static/ld/components/getStarted/sdk/roku.tsx
+docs:
+  reference-page: /sdk/client-side/roku
+hello-world-repo: launchdarkly/hello-roku
diff --git a/snippets/sdks/roku-client-sdk/snippets/getting-started/app-scene-brs.snippet.md b/snippets/sdks/roku-client-sdk/snippets/getting-started/app-scene-brs.snippet.md
new file mode 100644
index 00000000..e43ca87d
--- /dev/null
+++ b/snippets/sdks/roku-client-sdk/snippets/getting-started/app-scene-brs.snippet.md
@@ -0,0 +1,81 @@
+---
+id: roku-client-sdk/getting-started/app-scene-brs
+sdk: roku-client-sdk
+kind: hello-world
+lang: brightscript
+file: components/AppScene.brs
+description: Scene-side logic that initializes the SDK and renders the flag value.
+inputs:
+  mobileKey:
+    type: mobile-key
+    description: Mobile key baked into the rendered source. Roku snippets carry no automated validation — see the comment below the frontmatter.
+  featureKey:
+    type: flag-key
+    description: Default flag key baked into the rendered source.
+ld-application:
+  slot: app-scene-brs
+# validation: none
+#
+# Roku validation requires a Roku device or the proprietary BrightScript
+# simulator (no public CI runtime exists). The snippet is rendered into
+# gonfalon and is reviewed manually against a real Roku device when
+# changed; the `version-staleness.yml` sweep still tracks the upstream
+# package.zip release. See sdk-snippet-design.md §"Validator architecture"
+# for the policy.
+---
+
+In `components/AppScene.brs` add the following code:
+
+```brightscript
+function onFeatureChange() as Void
+    featureFlagKey = "{{ featureKey }}"
+
+    value = m.ld.variation(featureFlagKey, false)
+
+    if value then
+      m.top.backgroundColor = &h00844BFF
+      m.evaluation.text = "The " + featureFlagKey + " feature flag evaluates to true"
+    else
+      m.top.backgroundColor = &h373841FF
+      m.evaluation.text = "The " + featureFlagKey + " feature flag evaluates to false"
+    end if
+end function
+
+function onStatusChange() as Void
+    if m.ld.status.getStatus() = m.ld.status.map.initialized
+      m.status.text = "SDK successfully initialized"
+    else
+      m.status.text = "SDK failed to initialize. Please check your internet connection and SDK credential for any typo."
+    end if
+end function
+
+function init() as Void
+    mobileKey = "{{ mobileKey }}"
+
+    launchDarklyNode = m.top.findNode("launchDarkly")
+    launchDarklyNode.observeField("flags", "onFeatureChange")
+    launchDarklyNode.observeField("status", "onStatusChange")
+
+    config = LaunchDarklyConfig(mobileKey, launchDarklyNode)
+
+    ' Set up the user-kind context properties. This context should appear on
+    ' your LaunchDarkly contexts dashboard soon after you run the demo.
+    context = LaunchDarklyCreateContext({kind: "user", key: "example-user-key", name: "Sandy"})
+    LaunchDarklySGInit(config, context)
+
+    m.ld = LaunchDarklySG(launchDarklyNode)
+
+    m.evaluation = m.top.findNode("evaluation")
+    m.evaluation.font.size=40
+    m.evaluation.color="0xFFFFFFFF"
+
+    m.status = m.top.findNode("status")
+    m.status.font.size=20
+    m.status.color="0xFFFFFFFF"
+
+    m.top.backgroundColor = &h373841FF
+    m.top.backgroundUri = ""
+
+    onFeatureChange()
+end function
+```
diff --git a/snippets/sdks/roku-client-sdk/snippets/getting-started/app-scene-xml.snippet.md b/snippets/sdks/roku-client-sdk/snippets/getting-started/app-scene-xml.snippet.md
new file mode 100644
index 00000000..7415b4d5
--- /dev/null
+++ b/snippets/sdks/roku-client-sdk/snippets/getting-started/app-scene-xml.snippet.md
@@ -0,0 +1,45 @@
+---
+id: roku-client-sdk/getting-started/app-scene-xml
+sdk: roku-client-sdk
+kind: manifest
+lang: xml
+file: components/AppScene.xml
+description: SceneGraph component definition with the LaunchDarklyTask node.
+ld-application:
+  slot: app-scene-xml
+---
+
+In `components/AppScene.xml` create a basic scene by adding the following code:
+
+```xml
+<?xml version="1.0" encoding="utf-8" ?>
+<component name="AppScene" extends="Scene">
+    <children>
+        <LaunchDarklyTask id="launchDarkly"/>
+
+        <Label id="evaluation"
+            text="waiting on payload to initialize"
+            width="1280"
+            height="720"
+            wrap="true"
+            horizAlign="center"
+            vertAlign="center"
+        />
+
+        <Label id="status"
+            text="waiting for sdk status report"
+            width="1280"
+            height="720"
+            wrap="true"
+            horizAlign="center"
+            vertAlign="bottom"
+        />
+
+    </children>
+
+    <script type="text/brightscript" uri="pkg:/components/AppScene.brs"/>
+
+    <!-- Include the LaunchDarkly SDK. -->
+    <script type="text/brightscript" uri="pkg:/source/LaunchDarkly.brs"/>
+</component>
+```
diff --git a/snippets/sdks/roku-client-sdk/snippets/getting-started/main-brs.snippet.md b/snippets/sdks/roku-client-sdk/snippets/getting-started/main-brs.snippet.md
new file mode 100644
index 00000000..ff222b2d
--- /dev/null
+++ b/snippets/sdks/roku-client-sdk/snippets/getting-started/main-brs.snippet.md
@@ -0,0 +1,34 @@
+---
+id: roku-client-sdk/getting-started/main-brs
+sdk: roku-client-sdk
+kind: hello-world
+lang: brightscript
+file: source/main.brs
+description: Roku scene runner that boots the AppScene.
+ld-application:
+  slot: main-brs
+---
+
+Create a file with a basic scene runner named `source/main.brs` and add the following code:
+
+```brightscript
+sub main(params as object)
+  screen = createObject("roSGScreen")
+  messagePort = createObject("roMessagePort")
+  screen.setMessagePort(messagePort)
+
+  scene = screen.CreateScene("AppScene")
+
+  screen.show()
+
+  while (true)
+      msg = wait(2500, messagePort)
+
+      if type(msg) = "roSGScreenEvent"
+          if msg.isScreenClosed() then
+              return
+          end if
+      end if
+  end while
+end sub
+```
diff --git a/snippets/sdks/roku-client-sdk/snippets/getting-started/manifest.snippet.md b/snippets/sdks/roku-client-sdk/snippets/getting-started/manifest.snippet.md
new file mode 100644
index 00000000..79984214
--- /dev/null
+++ b/snippets/sdks/roku-client-sdk/snippets/getting-started/manifest.snippet.md
@@ -0,0 +1,18 @@
+---
+id: roku-client-sdk/getting-started/manifest
+sdk: roku-client-sdk
+kind: manifest
+lang: text
+description: Roku app manifest file.
+ld-application:
+  slot: manifest
+---
+
+Create a basic app `manifest` file:
+
+```text
+title=hello-roku
+major_version=1
+minor_version=0
+build_version=00001
+```
diff --git a/snippets/sdks/roku-client-sdk/snippets/getting-started/mkdir.snippet.md b/snippets/sdks/roku-client-sdk/snippets/getting-started/mkdir.snippet.md
new file mode 100644
index 00000000..5720f275
--- /dev/null
+++ b/snippets/sdks/roku-client-sdk/snippets/getting-started/mkdir.snippet.md
@@ -0,0 +1,15 @@
+---
+id: roku-client-sdk/getting-started/mkdir
+sdk: roku-client-sdk
+kind: bootstrap
+lang: shell
+description: Bootstrap the Roku project layout.
+ld-application:
+  slot: mkdir
+---
+
+Create a new directory for your application:
+
+```shell
+mkdir hello-roku && cd hello-roku && mkdir components source
+```
diff --git a/snippets/sdks/ruby-server-sdk/sdk.yaml b/snippets/sdks/ruby-server-sdk/sdk.yaml
new file mode 100644
index 00000000..f86c1783
--- /dev/null
+++ b/snippets/sdks/ruby-server-sdk/sdk.yaml
@@ -0,0 +1,14 @@
+id: ruby-server-sdk
+sdk-meta-id: ruby
+display-name: Ruby
+type: server-side
+languages:
+  - id: ruby
+    extensions: [".rb"]
+package-managers: [bundler]
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  get-started-file: static/ld/components/getStarted/sdk/ruby.tsx
+docs:
+  reference-page: /sdk/server-side/ruby
+hello-world-repo: launchdarkly/hello-ruby
diff --git a/snippets/sdks/ruby-server-sdk/snippets/getting-started/install.snippet.md b/snippets/sdks/ruby-server-sdk/snippets/getting-started/install.snippet.md
new file mode 100644
index 00000000..547e9ff7
--- /dev/null
+++ b/snippets/sdks/ruby-server-sdk/snippets/getting-started/install.snippet.md
@@ -0,0 +1,20 @@
+---
+id: ruby-server-sdk/getting-started/install
+sdk: ruby-server-sdk
+kind: install
+lang: shell
+description: Add the SDK gem to the Gemfile and install with bundler.
+inputs:
+  version:
+    type: string
+    description: Optional pinned SDK version; when empty the pin is omitted.
+    runtime-default: ""
+ld-application:
+  slot: install
+---
+
+Next, install the SDK:
+
+```shell
+echo "gem 'launchdarkly-server-sdk'{{ if version }}, '{{ version }}'{{ end }}" >> Gemfile && bundle install
+```
diff --git a/snippets/sdks/ruby-server-sdk/snippets/getting-started/main-rb.snippet.md b/snippets/sdks/ruby-server-sdk/snippets/getting-started/main-rb.snippet.md
new file mode 100644
index 00000000..63d79aa0
--- /dev/null
+++ b/snippets/sdks/ruby-server-sdk/snippets/getting-started/main-rb.snippet.md
@@ -0,0 +1,91 @@
+---
+id: ruby-server-sdk/getting-started/main-rb
+sdk: ruby-server-sdk
+kind: hello-world
+lang: ruby
+file: main.rb
+description: Hello-world program that initializes the Ruby server SDK and watches a feature flag.
+inputs:
+  featureKey:
+    type: flag-key
+    description: Default flag key baked into the rendered source. Validation reads LAUNCHDARKLY_FLAG_KEY at runtime.
+ld-application:
+  slot: main-rb
+validation:
+  runtime: ruby
+  requirements: launchdarkly-server-sdk
+---
+
+Create a file called `main.rb` and add the following code:
+
+```ruby
+require 'ldclient-rb'
+
+# Set sdk_key to your LaunchDarkly SDK key before running
+sdk_key = ENV['LAUNCHDARKLY_SDK_KEY']
+
+# Set feature_flag_key to the feature flag key you want to evaluate
+feature_flag_key = '{{ featureKey }}'
+
+if sdk_key == ''
+  puts "*** Please set the LAUNCHDARKLY_SDK_KEY environment variable\n"
+  exit 1
+elsif feature_flag_key == ''
+  puts "*** Please set the LAUNCHDARKLY_FLAG_KEY environment variable\n"
+  exit 1
+end
+
+def show_flag_message(flag_key, flag_value)
+  puts "*** The '#{flag_key}' feature flag evaluates to #{flag_value}.\n"
+
+  if flag_value
+    puts
+    puts "        ██       "
+    puts "          ██     "
+    puts "      ████████   "
+    puts "         ███████ "
+    puts "██ LAUNCHDARKLY █"
+    puts "         ███████ "
+    puts "      ████████   "
+    puts "          ██     "
+    puts "        ██       "
+    puts
+  end
+end
+
+class FlagChangeListener
+  def update(changed)
+    show_flag_message(changed.key, changed.new_value)
+  end
+end
+
+client = LaunchDarkly::LDClient.new(sdk_key)
+
+if client.initialized?
+  puts "*** SDK successfully initialized!\n"
+else
+  puts "*** SDK failed to initialize\n"
+  exit 1
+end
+
+# Set up the context properties. This context should appear on your LaunchDarkly contexts dashboard
+# soon after you run the demo.
+context = LaunchDarkly::LDContext.create({
+                                           key: 'example-user-key',
+                                           kind: 'user',
+                                           name: 'Sandy'
+                                         })
+
+flag_value = client.variation(feature_flag_key, context, false)
+
+show_flag_message(feature_flag_key, flag_value)
+
+client.flag_tracker.add_flag_value_change_listener(feature_flag_key, context, FlagChangeListener.new)
+
+# Run the Hello App continuously to react to flag change in LaunchDarkly
+thr = Thread.new {
+  puts "*** Waiting for changes."
+  sleep
+}
+thr.join
+```
diff --git a/snippets/sdks/ruby-server-sdk/snippets/getting-started/mkdir.snippet.md b/snippets/sdks/ruby-server-sdk/snippets/getting-started/mkdir.snippet.md
new file mode 100644
index 00000000..954923ff
--- /dev/null
+++ b/snippets/sdks/ruby-server-sdk/snippets/getting-started/mkdir.snippet.md
@@ -0,0 +1,15 @@
+---
+id: ruby-server-sdk/getting-started/mkdir
+sdk: ruby-server-sdk
+kind: bootstrap
+lang: shell
+description: Create the project directory and initialize a Gemfile.
+ld-application:
+  slot: mkdir
+---
+
+Create a new directory for your application:
+
+```shell
+mkdir hello-ruby && cd hello-ruby && bundle init
+```
diff --git a/snippets/sdks/ruby-server-sdk/snippets/getting-started/run.snippet.md b/snippets/sdks/ruby-server-sdk/snippets/getting-started/run.snippet.md
new file mode 100644
index 00000000..e2e35f21
--- /dev/null
+++ b/snippets/sdks/ruby-server-sdk/snippets/getting-started/run.snippet.md
@@ -0,0 +1,19 @@
+---
+id: ruby-server-sdk/getting-started/run
+sdk: ruby-server-sdk
+kind: run
+lang: shell
+description: Run the program with the SDK key in the environment.
+inputs:
+  apiKey:
+    type: sdk-key
+    description: SDK key embedded in the rendered Run command.
+ld-application:
+  slot: run
+---
+
+Run:
+
+```shell
+bundle exec env LAUNCHDARKLY_SDK_KEY="{{ apiKey }}" ruby main.rb
+```
diff --git a/snippets/sdks/rust-server-sdk/sdk.yaml b/snippets/sdks/rust-server-sdk/sdk.yaml
new file mode 100644
index 00000000..45787010
--- /dev/null
+++ b/snippets/sdks/rust-server-sdk/sdk.yaml
@@ -0,0 +1,14 @@
+id: rust-server-sdk
+sdk-meta-id: rust
+display-name: Rust
+type: server-side
+languages:
+  - id: rust
+    extensions: [".rs"]
+package-managers: [cargo]
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  get-started-file: static/ld/components/getStarted/sdk/rust.tsx
+docs:
+  reference-page: /sdk/server-side/rust
+hello-world-repo: launchdarkly/hello-rust
diff --git a/snippets/sdks/rust-server-sdk/snippets/getting-started/cargo-new.snippet.md b/snippets/sdks/rust-server-sdk/snippets/getting-started/cargo-new.snippet.md
new file mode 100644
index 00000000..d01c95f8
--- /dev/null
+++ b/snippets/sdks/rust-server-sdk/snippets/getting-started/cargo-new.snippet.md
@@ -0,0 +1,15 @@
+---
+id: rust-server-sdk/getting-started/cargo-new
+sdk: rust-server-sdk
+kind: bootstrap
+lang: shell
+description: Create a new Rust project with cargo.
+ld-application:
+  slot: cargo-new
+---
+
+Create a new project using [Cargo](https://doc.rust-lang.org/book/ch01-01-installation.html#installation).
+
+```shell
+cargo new hello-rust && cd hello-rust
+```
diff --git a/snippets/sdks/rust-server-sdk/snippets/getting-started/install-sdk.snippet.md b/snippets/sdks/rust-server-sdk/snippets/getting-started/install-sdk.snippet.md
new file mode 100644
index 00000000..340cdfe3
--- /dev/null
+++ b/snippets/sdks/rust-server-sdk/snippets/getting-started/install-sdk.snippet.md
@@ -0,0 +1,15 @@
+---
+id: rust-server-sdk/getting-started/install-sdk
+sdk: rust-server-sdk
+kind: install
+lang: shell
+description: Add the LaunchDarkly Rust server SDK as a dependency.
+ld-application:
+  slot: install-sdk
+---
+
+Next, install the LaunchDarkly SDK as a dependency in your application.
+
+```shell
+cargo add launchdarkly-server-sdk
+```
diff --git a/snippets/sdks/rust-server-sdk/snippets/getting-started/install-tokio.snippet.md b/snippets/sdks/rust-server-sdk/snippets/getting-started/install-tokio.snippet.md
new file mode 100644
index 00000000..22e2e141
--- /dev/null
+++ b/snippets/sdks/rust-server-sdk/snippets/getting-started/install-tokio.snippet.md
@@ -0,0 +1,15 @@
+---
+id: rust-server-sdk/getting-started/install-tokio
+sdk: rust-server-sdk
+kind: install
+lang: shell
+description: Add tokio with the rt and macros features as a dependency.
+ld-application:
+  slot: install-tokio
+---
+
+Next, add `tokio` as another dependency alongside the SDK.
+
+```shell
+cargo add tokio@1 -F rt,macros
+```
diff --git a/snippets/sdks/rust-server-sdk/snippets/getting-started/main-rs.snippet.md b/snippets/sdks/rust-server-sdk/snippets/getting-started/main-rs.snippet.md
new file mode 100644
index 00000000..fa49bfa8
--- /dev/null
+++ b/snippets/sdks/rust-server-sdk/snippets/getting-started/main-rs.snippet.md
@@ -0,0 +1,95 @@
+---
+id: rust-server-sdk/getting-started/main-rs
+sdk: rust-server-sdk
+kind: hello-world
+lang: rust
+file: src/main.rs
+description: Hello-world program that initializes the Rust server SDK and watches a feature flag.
+inputs:
+  featureKey:
+    type: flag-key
+    description: Default flag key baked into the rendered source. Validation reads LAUNCHDARKLY_FLAG_KEY at runtime.
+ld-application:
+  slot: main-rs
+validation:
+  runtime: rust
+---
+
+Open the file `src/main.rs` and replace the existing code with the following code:
+
+```rust
+use std::{thread, time};
+
+use launchdarkly_server_sdk::{Client, ConfigBuilder, ContextBuilder};
+
+fn show_evaluation_result(feature_flag_key: &str, result: bool) {
+    println!(
+        "*** The {} feature flag evaluates to {}",
+        feature_flag_key,
+        result,
+    );
+}
+
+fn print_banner() {
+    println!("                 ");
+    println!("        ██       ");
+    println!("          ██     ");
+    println!("      ████████   ");
+    println!("         ███████ ");
+    println!("██ LAUNCHDARKLY █");
+    println!("         ███████ ");
+    println!("      ████████   ");
+    println!("          ██     ");
+    println!("        ██       ");
+    println!("                 ");
+}
+
+#[tokio::main]
+async fn main() {
+    // Set sdk_key to your LaunchDarkly SDK key.
+    let sdk_key = std::env::var("LAUNCHDARKLY_SDK_KEY")
+        .expect("LAUNCHDARKLY_SDK_KEY env should be set");
+    // Set feature_flag_key to the feature flag key you want to evaluate.
+    let feature_flag_key = "{{ featureKey }}";
+
+    let config = ConfigBuilder::new(&sdk_key)
+        .build()
+        .expect("Config failed to build");
+        let client = Client::build(config).expect("Client failed to build");
+        // Starts the client using the currently active runtime.
+        client.start_with_default_executor();
+
+    // Wait to ensure the client has fully initialized.
+    if !client.initialized_async().await {
+        panic!("*** SDK failed to initialize. Please check your internet connection and SDK credential for any typo.");
+    }
+
+    println!("*** SDK successfully initialized.");
+
+    // Set up the evaluation context. This context should appear on your LaunchDarkly contexts dashboard soon after you run the demo.
+    let context = ContextBuilder::new("example-user-key")
+        .kind("user")
+        .name("Sandy")
+        .build()
+        .expect("Context failed to build");
+
+    let mut show_banner = true;
+    let mut last_value = None;
+
+    loop {
+        let result = client.bool_variation(&context, &feature_flag_key, false);
+
+        if Some(result) != last_value {
+            show_evaluation_result(&feature_flag_key, result);
+        }
+
+        if show_banner && result {
+            print_banner();
+            show_banner = false;
+        }
+
+        last_value = Some(result);
+        thread::sleep(time::Duration::from_secs(1));
+    }
+}
+```
diff --git a/snippets/sdks/rust-server-sdk/snippets/getting-started/run.snippet.md b/snippets/sdks/rust-server-sdk/snippets/getting-started/run.snippet.md
new file mode 100644
index 00000000..d0b184a2
--- /dev/null
+++ b/snippets/sdks/rust-server-sdk/snippets/getting-started/run.snippet.md
@@ -0,0 +1,19 @@
+---
+id: rust-server-sdk/getting-started/run
+sdk: rust-server-sdk
+kind: run
+lang: shell
+description: Build and run with cargo.
+inputs:
+  apiKey:
+    type: sdk-key
+    description: SDK key embedded in the rendered Run command.
+ld-application:
+  slot: run
+---
+
+Run:
+
+```shell
+LAUNCHDARKLY_SDK_KEY='{{ apiKey }}' cargo run
+```
diff --git a/snippets/sdks/vue-client-sdk/sdk.yaml b/snippets/sdks/vue-client-sdk/sdk.yaml
new file mode 100644
index 00000000..8d6bb890
--- /dev/null
+++ b/snippets/sdks/vue-client-sdk/sdk.yaml
@@ -0,0 +1,16 @@
+id: vue-client-sdk
+sdk-meta-id: vue
+display-name: Vue
+type: client-side
+languages:
+  - id: javascript
+    extensions: [".js"]
+  - id: vue
+    extensions: [".vue"]
+package-managers: [npm, yarn]
+regions: [commercial, federal, eu, relay-proxy]
+ld-application:
+  get-started-file: static/ld/components/getStarted/sdk/vue.tsx
+docs:
+  reference-page: /sdk/client-side/vue
+hello-world-repo: launchdarkly/vue-client-sdk
diff --git a/snippets/sdks/vue-client-sdk/snippets/getting-started/app-vue.snippet.md b/snippets/sdks/vue-client-sdk/snippets/getting-started/app-vue.snippet.md
new file mode 100644
index 00000000..fdcd7027
--- /dev/null
+++ b/snippets/sdks/vue-client-sdk/snippets/getting-started/app-vue.snippet.md
@@ -0,0 +1,34 @@
+---
+id: vue-client-sdk/getting-started/app-vue
+sdk: vue-client-sdk
+kind: hello-world
+lang: html
+file: src/App.vue
+description: src/App.vue evaluates a feature flag with useLDFlag.
+inputs:
+  featureKey:
+    type: flag-key
+    description: Default flag key baked into the rendered source.
+ld-application:
+  slot: app-vue
+validation:
+  runtime: vue-client
+  entrypoint: src/App.vue
+  companions: [vue-client-sdk/getting-started/main-js]
+---
+
+In `src/App.vue`:
+
+```html
+<script setup>
+import { useLDFlag, useLDReady } from 'launchdarkly-vue-client-sdk'
+
+const ldReady = useLDReady()
+const flagValue = useLDFlag('{{ featureKey }}', false)
+</script>
+
+<template>
+  <div v-if="ldReady">The {{ featureKey }} feature flag evaluates to {{ flagValue }}.</div>
+  <div v-else>LaunchDarkly client initializing...</div>
+</template>
+```
diff --git a/snippets/sdks/vue-client-sdk/snippets/getting-started/create-vue.snippet.md b/snippets/sdks/vue-client-sdk/snippets/getting-started/create-vue.snippet.md
new file mode 100644
index 00000000..b9e524aa
--- /dev/null
+++ b/snippets/sdks/vue-client-sdk/snippets/getting-started/create-vue.snippet.md
@@ -0,0 +1,15 @@
+---
+id: vue-client-sdk/getting-started/create-vue
+sdk: vue-client-sdk
+kind: bootstrap
+lang: shell
+description: Bootstrap a new Vue project with create-vue.
+ld-application:
+  slot: create-vue
+---
+
+Use create-vue to create a new Vue application:
+
+```shell
+npm create vue@latest
+```
diff --git a/snippets/sdks/vue-client-sdk/snippets/getting-started/install.snippet.md b/snippets/sdks/vue-client-sdk/snippets/getting-started/install.snippet.md
new file mode 100644
index 00000000..bfeed364
--- /dev/null
+++ b/snippets/sdks/vue-client-sdk/snippets/getting-started/install.snippet.md
@@ -0,0 +1,15 @@
+---
+id: vue-client-sdk/getting-started/install
+sdk: vue-client-sdk
+kind: install
+lang: shell
+description: Change into the project and install the LaunchDarkly Vue SDK.
+ld-application:
+  slot: install
+---
+
+Change dir and install the LaunchDarkly SDK:
+
+```shell
+cd hello-vue && yarn add launchdarkly-vue-client-sdk
+```
diff --git a/snippets/sdks/vue-client-sdk/snippets/getting-started/main-js.snippet.md b/snippets/sdks/vue-client-sdk/snippets/getting-started/main-js.snippet.md
new file mode 100644
index 00000000..1228d448
--- /dev/null
+++ b/snippets/sdks/vue-client-sdk/snippets/getting-started/main-js.snippet.md
@@ -0,0 +1,29 @@
+---
+id: vue-client-sdk/getting-started/main-js
+sdk: vue-client-sdk
+kind: hello-world
+lang: javascript
+file: src/main.js
+description: src/main.js wires the LDPlugin into the Vue app.
+inputs:
+  environmentId:
+    type: client-side-id
+    description: Client-side ID baked into the rendered source.
+ld-application:
+  slot: main-js
+---
+
+In `src/main.js`:
+
+```javascript
+import { createApp } from 'vue'
+import App from './App.vue'
+import { LDPlugin } from 'launchdarkly-vue-client-sdk'
+
+const app = createApp(App)
+app.use(LDPlugin, {
+  clientSideID: '{{ environmentId }}',
+  context: { kind: 'user', key: 'example-user-key' },
+})
+app.mount('#app')
+```
diff --git a/snippets/validators/languages/android-client/Dockerfile b/snippets/validators/languages/android-client/Dockerfile
new file mode 100644
index 00000000..33d2c86b
--- /dev/null
+++ b/snippets/validators/languages/android-client/Dockerfile
@@ -0,0 +1,79 @@
+FROM eclipse-temurin:17-jdk-noble
+
+# Android SDK command-line tools + the build-tools / platforms versions
+# the snippet needs. We *don't* install the emulator: Robolectric runs
+# the activity lifecycle in the JVM, which is enough to exercise the
+# snippet's init+evaluate path against the real LD streaming API.
+RUN apt-get update && apt-get install -y --no-install-recommends \
+        curl unzip git ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+
+ENV ANDROID_HOME=/opt/android-sdk
+ENV ANDROID_SDK_ROOT=${ANDROID_HOME}
+ENV PATH="${ANDROID_HOME}/cmdline-tools/latest/bin:${ANDROID_HOME}/platform-tools:${PATH}"
+
+# Pin a specific cmdline-tools build to avoid surprise upgrades.
+ARG CMDLINE_TOOLS_VERSION=11076708
+RUN mkdir -p ${ANDROID_HOME}/cmdline-tools \
+    && curl -fsSL --retry 3 --retry-delay 5 --max-time 600 "https://dl.google.com/android/repository/commandlinetools-linux-${CMDLINE_TOOLS_VERSION}_latest.zip" -o /tmp/tools.zip \
+    && unzip -q /tmp/tools.zip -d ${ANDROID_HOME}/cmdline-tools \
+    && mv ${ANDROID_HOME}/cmdline-tools/cmdline-tools ${ANDROID_HOME}/cmdline-tools/latest \
+    && rm /tmp/tools.zip
+
+RUN yes | sdkmanager --licenses >/dev/null \
+    && sdkmanager --install "platforms;android-34" "platform-tools" "build-tools;34.0.0"
+
+# Pre-bake a hello-android gradle scaffold. We clone the upstream
+# hello-android repo (LD's official getting-started reference) at a
+# pinned ref, then patch app/build.gradle to use the latest SDK +
+# Robolectric (so the validator runs in a pure JVM, no emulator).
+ARG HELLO_ANDROID_REF=main
+ARG LD_ANDROID_SDK_VERSION=5.11.1
+ARG ROBOLECTRIC_VERSION=4.12.2
+
+RUN git clone --depth 1 --branch "${HELLO_ANDROID_REF}" \
+        https://github.com/launchdarkly/hello-android.git /opt/hello-android
+
+WORKDIR /opt/hello-android
+
+# Patch the LD SDK version + add Robolectric to testImplementation.
+RUN sed -i "s|com.launchdarkly:launchdarkly-android-client-sdk:[0-9.]*|com.launchdarkly:launchdarkly-android-client-sdk:${LD_ANDROID_SDK_VERSION}|" app/build.gradle \
+    && sed -i "/^dependencies {$/a\\    testImplementation 'org.robolectric:robolectric:${ROBOLECTRIC_VERSION}'\\n    testImplementation 'junit:junit:4.13.2'\\n    testImplementation 'androidx.test:core:1.5.0'\\n    testImplementation 'androidx.test.ext:junit:1.1.5'" app/build.gradle
+
+# Robolectric needs testOptions { unitTests.includeAndroidResources } to
+# resolve R.string / R.id at test time. Forward stdout/stderr so the
+# harness can grep the canonical EXAM-HELLO line; without this the
+# textView dump only ends up in build/reports/tests.
+RUN cat >> app/build.gradle <<'EOF'
+
+android {
+    testOptions {
+        unitTests {
+            includeAndroidResources = true
+            all {
+                testLogging {
+                    events 'passed', 'failed', 'standardOut', 'standardError'
+                    showStandardStreams = true
+                }
+            }
+        }
+    }
+}
+EOF
+
+# Drop a Robolectric test that drives the Activity lifecycle and reads
+# the textView's content. This file is harness-internal; the snippet
+# itself stays unchanged.
+RUN mkdir -p app/src/test/java/com/launchdarkly/hello_android
+COPY languages/android-client/test/HelloAppTest.kt \
+        app/src/test/java/com/launchdarkly/hello_android/HelloAppTest.kt
+
+# Pre-warm: pull deps, compile, run a placeholder test cycle.
+RUN ./gradlew --no-daemon dependencies --console=plain >/dev/null 2>&1 || true
+
+WORKDIR /work
+
+COPY shared /harness-shared
+COPY languages/android-client/harness /harness
+
+ENTRYPOINT ["/harness/run.sh"]
diff --git a/snippets/validators/languages/android-client/harness/run.sh b/snippets/validators/languages/android-client/harness/run.sh
new file mode 100755
index 00000000..d6dd545f
--- /dev/null
+++ b/snippets/validators/languages/android-client/harness/run.sh
@@ -0,0 +1,37 @@
+#!/bin/sh
+# Validates the Android snippet under Robolectric (no emulator). The
+# Dockerfile pre-bakes a hello-android scaffold + Robolectric test;
+# per-validate we just swap the snippet's two Kotlin files in and run
+# the JUnit test.
+set -eu
+
+. /harness-shared/lib.sh
+require_env LAUNCHDARKLY_MOBILE_KEY LAUNCHDARKLY_FLAG_KEY SNIPPET_ENTRYPOINT
+
+# The snippet declares main-application + main-activity as separate
+# files. Both come through as part of the staging dir — copy whichever
+# .kt files /snippet has into the scaffold's main source tree.
+SCAFFOLD=/opt/hello-android
+PKG_DIR="${SCAFFOLD}/app/src/main/java/com/launchdarkly/hello_android"
+
+for f in /snippet/app/src/main/java/com/launchdarkly/hello_android/*.kt; do
+    [ -f "$f" ] || continue
+    cp "$f" "${PKG_DIR}/$(basename "$f")"
+done
+
+cd "${SCAFFOLD}"
+
+LOG=$(mktemp)
+timeout --signal=TERM 600s ./gradlew --no-daemon \
+        testDebugUnitTest --tests='*HelloAppTest*' --console=plain \
+        >"$LOG" 2>&1 &
+PID=$!
+
+deadline=$(( $(date +%s) + 590 ))
+if await_success_line "$LOG" "$PID" "$deadline"; then
+    exit 0
+fi
+
+kill -TERM "$PID" 2>/dev/null || true
+wait "$PID" 2>/dev/null || true
+fail_with_log "$LOG" "did not see expected line: feature flag evaluates to true"
diff --git a/snippets/validators/languages/android-client/runner.yaml b/snippets/validators/languages/android-client/runner.yaml
new file mode 100644
index 00000000..e1d19667
--- /dev/null
+++ b/snippets/validators/languages/android-client/runner.yaml
@@ -0,0 +1,3 @@
+mode: docker
+runs-on: ubuntu-latest
+image-prefix: sdk-snippets/android-client-validator
diff --git a/snippets/validators/languages/android-client/test/HelloAppTest.kt b/snippets/validators/languages/android-client/test/HelloAppTest.kt
new file mode 100644
index 00000000..e8fe39dc
--- /dev/null
+++ b/snippets/validators/languages/android-client/test/HelloAppTest.kt
@@ -0,0 +1,58 @@
+package com.launchdarkly.hello_android
+
+import android.widget.TextView
+import androidx.test.core.app.ApplicationProvider
+import org.junit.Assert.assertTrue
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.robolectric.Robolectric
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.annotation.Config
+
+/**
+ * Robolectric test that drives MainApplication + MainActivity end-to-end
+ * against the real LaunchDarkly streaming API. This is the validator's
+ * harness; it lives in app/src/test/ and is added to the project at
+ * docker-build time. The snippet's two .kt files are dropped into
+ * app/src/main/ at validate time and compiled alongside this test.
+ */
+@RunWith(RobolectricTestRunner::class)
+@Config(sdk = [33], application = MainApplication::class)
+class HelloAppTest {
+    @Test
+    fun flagEvaluatesToTrue() {
+        // ApplicationProvider triggers MainApplication.onCreate which
+        // calls LDClient.init with the mobile key the snippet baked in.
+        val app = ApplicationProvider.getApplicationContext<MainApplication>()
+        check(app != null) { "MainApplication context not registered" }
+
+        // Drive the activity lifecycle. MainActivity.onCreate calls
+        // boolVariation and renders into the TextView.
+        val controller = Robolectric.buildActivity(MainActivity::class.java)
+                .create()
+                .start()
+                .resume()
+                .visible()
+        val activity = controller.get()
+        val textView = activity.findViewById<TextView>(R.id.textview)
+
+        // Wait for the streaming SDK to fetch the flag and fire the
+        // change listener, then for Robolectric's main looper to apply
+        // the resulting setText. Polling with a wider deadline is
+        // robust against transient network jitter.
+        val deadline = System.currentTimeMillis() + 30_000
+        var rendered = textView.text.toString()
+        while (System.currentTimeMillis() < deadline) {
+            rendered = textView.text.toString()
+            if (rendered.contains("evaluates to true", ignoreCase = true)) {
+                println("validator: ok")
+                println(rendered)
+                return
+            }
+            Thread.sleep(500)
+            org.robolectric.shadows.ShadowLooper.runUiThreadTasksIncludingDelayedTasks()
+        }
+        assertTrue("did not see expected line; got: $rendered",
+                rendered.contains("evaluates to true", ignoreCase = true))
+    }
+}
diff --git a/snippets/validators/languages/browser/Dockerfile b/snippets/validators/languages/browser/Dockerfile
new file mode 100644
index 00000000..f182dd29
--- /dev/null
+++ b/snippets/validators/languages/browser/Dockerfile
@@ -0,0 +1,13 @@
+# Playwright's official image bundles Chromium + headless Chrome + Node +
+# Playwright. The npm install pins the matching JS-module version so the
+# bundled browser binary matches the API we call against.
+FROM mcr.microsoft.com/playwright:v1.59.1-noble
+
+WORKDIR /work
+
+COPY shared /harness-shared
+COPY languages/browser/harness /harness
+
+RUN cd /harness && npm install --silent --no-audit --no-fund --no-progress playwright@1.59.1
+
+ENTRYPOINT ["/harness/run.sh"]
diff --git a/snippets/validators/languages/browser/harness/check.js b/snippets/validators/languages/browser/harness/check.js
new file mode 100644
index 00000000..115b8e8a
--- /dev/null
+++ b/snippets/validators/languages/browser/harness/check.js
@@ -0,0 +1,44 @@
+// Loads the staged HTML in headless Chromium, polls the page text for the
+// EXAM-HELLO success line, and exits 0 when matched. The browser is given
+// up to 30 seconds to fetch the LaunchDarkly client SDK from its CDN,
+// initialize, and evaluate the flag.
+const { chromium } = require('/harness/node_modules/playwright');
+
+(async () => {
+  const entrypoint = process.env.SNIPPET_ENTRYPOINT || 'index.html';
+  const url = `file:///snippet/${entrypoint}`;
+  const successRe = /feature flag evaluates to true/i;
+
+  const browser = await chromium.launch();
+  const context = await browser.newContext();
+  const page = await context.newPage();
+
+  // Mirror page console messages to validator stdout so a snippet that
+  // fails to init is debuggable from the run log.
+  page.on('console', msg => console.log('[browser]', msg.text()));
+  page.on('pageerror', err => console.log('[browser:error]', err.message));
+
+  await page.goto(url);
+
+  const deadline = Date.now() + 30_000;
+  while (Date.now() < deadline) {
+    const text = (await page.textContent('body')) || '';
+    if (successRe.test(text)) {
+      console.log(text.trim());
+      console.log('validator: ok');
+      await browser.close();
+      process.exit(0);
+    }
+    await page.waitForTimeout(500);
+  }
+
+  const finalText = (await page.textContent('body')) || '';
+  console.error('validator: did not see expected line: feature flag evaluates to true');
+  console.error('--- final body text ---');
+  console.error(finalText.trim());
+  await browser.close();
+  process.exit(1);
+})().catch(async (err) => {
+  console.error('validator: harness error:', err.message);
+  process.exit(1);
+});
diff --git a/snippets/validators/languages/browser/harness/run.sh b/snippets/validators/languages/browser/harness/run.sh
new file mode 100755
index 00000000..e3966629
--- /dev/null
+++ b/snippets/validators/languages/browser/harness/run.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+# Runs the staged HTML snippet in headless Chromium and watches the page
+# text for the EXAM-HELLO success line.
+set -eu
+
+. /harness-shared/lib.sh
+require_env LAUNCHDARKLY_CLIENT_SIDE_ID LAUNCHDARKLY_FLAG_KEY SNIPPET_ENTRYPOINT
+
+# The check.js harness reads SNIPPET_ENTRYPOINT and locates /snippet/<file>.
+# All output goes to stdout/stderr — match handling lives in check.js since
+# the success criterion is the page DOM text, not the program log.
+exec node /harness/check.js
diff --git a/snippets/validators/languages/browser/runner.yaml b/snippets/validators/languages/browser/runner.yaml
new file mode 100644
index 00000000..2cbdbf5d
--- /dev/null
+++ b/snippets/validators/languages/browser/runner.yaml
@@ -0,0 +1,3 @@
+mode: docker
+runs-on: ubuntu-latest
+image-prefix: sdk-snippets/browser-validator
diff --git a/snippets/validators/languages/cpp-client/Dockerfile b/snippets/validators/languages/cpp-client/Dockerfile
new file mode 100644
index 00000000..57880493
--- /dev/null
+++ b/snippets/validators/languages/cpp-client/Dockerfile
@@ -0,0 +1,42 @@
+FROM ubuntu:24.04
+
+# Build chain for the LD C++ Client SDK (cmake, ninja, boost, openssl,
+# git for cloning cpp-sdks, ccache to keep per-validate rebuilds cheap).
+RUN apt-get update && apt-get install -y --no-install-recommends \
+        build-essential cmake ninja-build pkg-config \
+        libboost-all-dev libssl-dev \
+        git ca-certificates ccache \
+    && rm -rf /var/lib/apt/lists/*
+
+ENV CCACHE_DIR=/root/.ccache
+ENV PATH="/usr/lib/ccache:${PATH}"
+
+# Pre-clone cpp-sdks. The snippet's CMakeLists references this via
+# `add_subdirectory(cpp-sdks)` from the project root, so we symlink it
+# into the staging dir at validate time rather than committing the
+# tree to /work directly.
+ARG CPP_SDKS_REF=launchdarkly-cpp-client-v3.11.1
+RUN git clone --depth 1 --branch "${CPP_SDKS_REF}" \
+        https://github.com/launchdarkly/cpp-sdks.git /opt/cpp-sdks
+
+# Warm the ccache by configuring + building the client SDK once. Subsequent
+# per-snippet builds compile only the user's main.cpp and link against the
+# already-cached objects.
+RUN mkdir -p /tmp/prewarm && cd /tmp/prewarm \
+    && ln -s /opt/cpp-sdks cpp-sdks \
+    && printf 'cmake_minimum_required(VERSION 3.19)\n\
+project(prewarm LANGUAGES CXX)\n\
+set(THREADS_PREFER_PTHREAD_FLAG ON)\n\
+find_package(Threads REQUIRED)\n\
+add_subdirectory(cpp-sdks)\n' > CMakeLists.txt \
+    && mkdir build && cd build \
+    && cmake -G Ninja -DBUILD_TESTING=OFF .. \
+    && cmake --build . --target launchdarkly-cpp-client \
+    && cd / && rm -rf /tmp/prewarm
+
+WORKDIR /work
+
+COPY shared /harness-shared
+COPY languages/cpp-client/harness /harness
+
+ENTRYPOINT ["/harness/run.sh"]
diff --git a/snippets/validators/languages/cpp-client/harness/run.sh b/snippets/validators/languages/cpp-client/harness/run.sh
new file mode 100755
index 00000000..87e26948
--- /dev/null
+++ b/snippets/validators/languages/cpp-client/harness/run.sh
@@ -0,0 +1,50 @@
+#!/bin/sh
+# Runs the staged C++ client snippet against a real LaunchDarkly environment.
+# Mirrors gonfalon's Get Started flow: clone cpp-sdks alongside main.cpp,
+# add it via CMake, link the client SDK target. The Dockerfile pre-cloned
+# cpp-sdks at /opt/cpp-sdks and prewarmed the build cache, so per-validate
+# cycles only compile the user's main.cpp.
+set -eu
+
+. /harness-shared/lib.sh
+require_env LAUNCHDARKLY_MOBILE_KEY LAUNCHDARKLY_FLAG_KEY SNIPPET_ENTRYPOINT
+
+WORK=$(mktemp -d)
+trap 'rm -rf "$WORK"' EXIT
+cd "$WORK"
+
+cp "/snippet/$SNIPPET_ENTRYPOINT" main.cpp
+ln -s /opt/cpp-sdks cpp-sdks
+
+cat > CMakeLists.txt <<'EOF'
+cmake_minimum_required(VERSION 3.19)
+project(hello-cpp-client LANGUAGES CXX)
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(THREADS_PREFER_PTHREAD_FLAG ON)
+find_package(Threads REQUIRED)
+add_subdirectory(cpp-sdks)
+add_executable(hello main.cpp)
+target_link_libraries(hello PRIVATE launchdarkly::client Threads::Threads)
+EOF
+
+mkdir build
+cd build
+cmake -G Ninja -DBUILD_TESTING=OFF .. >/tmp/cmake.log 2>&1 \
+    || { cat /tmp/cmake.log >&2; exit 1; }
+cmake --build . --target hello >/tmp/build.log 2>&1 \
+    || { cat /tmp/build.log >&2; exit 1; }
+
+LOG=$(mktemp)
+
+timeout --signal=TERM 60s ./hello >"$LOG" 2>&1 &
+PID=$!
+
+deadline=$(( $(date +%s) + 55 ))
+if await_success_line "$LOG" "$PID" "$deadline"; then
+    exit 0
+fi
+
+kill -TERM "$PID" 2>/dev/null || true
+wait "$PID" 2>/dev/null || true
+fail_with_log "$LOG" "did not see expected line: feature flag evaluates to true"
diff --git a/snippets/validators/languages/cpp-client/runner.yaml b/snippets/validators/languages/cpp-client/runner.yaml
new file mode 100644
index 00000000..74e722dd
--- /dev/null
+++ b/snippets/validators/languages/cpp-client/runner.yaml
@@ -0,0 +1,3 @@
+mode: docker
+runs-on: ubuntu-latest
+image-prefix: sdk-snippets/cpp-client-validator
diff --git a/snippets/validators/languages/cpp-server/Dockerfile b/snippets/validators/languages/cpp-server/Dockerfile
new file mode 100644
index 00000000..594ef4fa
--- /dev/null
+++ b/snippets/validators/languages/cpp-server/Dockerfile
@@ -0,0 +1,42 @@
+FROM ubuntu:24.04
+
+# Build chain for the LD C++ Server SDK (cmake, ninja, boost, openssl,
+# git for cloning cpp-sdks, ccache to keep per-validate rebuilds cheap).
+RUN apt-get update && apt-get install -y --no-install-recommends \
+        build-essential cmake ninja-build pkg-config \
+        libboost-all-dev libssl-dev \
+        git ca-certificates ccache \
+    && rm -rf /var/lib/apt/lists/*
+
+ENV CCACHE_DIR=/root/.ccache
+ENV PATH="/usr/lib/ccache:${PATH}"
+
+# Pre-clone cpp-sdks. The snippet's CMakeLists references this via
+# `add_subdirectory(cpp-sdks)` from the project root, so we symlink it
+# into the staging dir at validate time rather than committing the
+# tree to /work directly.
+ARG CPP_SDKS_REF=launchdarkly-cpp-server-v3.10.1
+RUN git clone --depth 1 --branch "${CPP_SDKS_REF}" \
+        https://github.com/launchdarkly/cpp-sdks.git /opt/cpp-sdks
+
+# Warm the ccache by configuring + building the server SDK once. Subsequent
+# per-snippet builds compile only the user's main.cpp and link against the
+# already-cached objects.
+RUN mkdir -p /tmp/prewarm && cd /tmp/prewarm \
+    && ln -s /opt/cpp-sdks cpp-sdks \
+    && printf 'cmake_minimum_required(VERSION 3.19)\n\
+project(prewarm LANGUAGES CXX)\n\
+set(THREADS_PREFER_PTHREAD_FLAG ON)\n\
+find_package(Threads REQUIRED)\n\
+add_subdirectory(cpp-sdks)\n' > CMakeLists.txt \
+    && mkdir build && cd build \
+    && cmake -G Ninja -DBUILD_TESTING=OFF .. \
+    && cmake --build . --target launchdarkly-cpp-server \
+    && cd / && rm -rf /tmp/prewarm
+
+WORKDIR /work
+
+COPY shared /harness-shared
+COPY languages/cpp-server/harness /harness
+
+ENTRYPOINT ["/harness/run.sh"]
diff --git a/snippets/validators/languages/cpp-server/harness/run.sh b/snippets/validators/languages/cpp-server/harness/run.sh
new file mode 100755
index 00000000..820aa3bf
--- /dev/null
+++ b/snippets/validators/languages/cpp-server/harness/run.sh
@@ -0,0 +1,51 @@
+#!/bin/sh
+# Runs the staged C++ server snippet against a real LaunchDarkly environment.
+# The snippet is just a single main.cpp; gonfalon's Get Started flow has the
+# user clone cpp-sdks alongside their project and add it via CMake. We mirror
+# that here: the Dockerfile pre-cloned cpp-sdks at /opt/cpp-sdks and prewarmed
+# the build cache, so per-validate cycles only compile the user's main.cpp
+# and link against the cached SDK objects.
+set -eu
+
+. /harness-shared/lib.sh
+require_env LAUNCHDARKLY_SDK_KEY LAUNCHDARKLY_FLAG_KEY SNIPPET_ENTRYPOINT
+
+WORK=$(mktemp -d)
+trap 'rm -rf "$WORK"' EXIT
+cd "$WORK"
+
+cp "/snippet/$SNIPPET_ENTRYPOINT" main.cpp
+ln -s /opt/cpp-sdks cpp-sdks
+
+cat > CMakeLists.txt <<'EOF'
+cmake_minimum_required(VERSION 3.19)
+project(hello-cpp-server LANGUAGES CXX)
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(THREADS_PREFER_PTHREAD_FLAG ON)
+find_package(Threads REQUIRED)
+add_subdirectory(cpp-sdks)
+add_executable(hello main.cpp)
+target_link_libraries(hello PRIVATE launchdarkly::server Threads::Threads)
+EOF
+
+mkdir build
+cd build
+cmake -G Ninja -DBUILD_TESTING=OFF .. >/tmp/cmake.log 2>&1 \
+    || { cat /tmp/cmake.log >&2; exit 1; }
+cmake --build . --target hello >/tmp/build.log 2>&1 \
+    || { cat /tmp/build.log >&2; exit 1; }
+
+LOG=$(mktemp)
+
+timeout --signal=TERM 60s ./hello >"$LOG" 2>&1 &
+PID=$!
+
+deadline=$(( $(date +%s) + 55 ))
+if await_success_line "$LOG" "$PID" "$deadline"; then
+    exit 0
+fi
+
+kill -TERM "$PID" 2>/dev/null || true
+wait "$PID" 2>/dev/null || true
+fail_with_log "$LOG" "did not see expected line: feature flag evaluates to true"
diff --git a/snippets/validators/languages/cpp-server/runner.yaml b/snippets/validators/languages/cpp-server/runner.yaml
new file mode 100644
index 00000000..b5c0a215
--- /dev/null
+++ b/snippets/validators/languages/cpp-server/runner.yaml
@@ -0,0 +1,3 @@
+mode: docker
+runs-on: ubuntu-latest
+image-prefix: sdk-snippets/cpp-server-validator
diff --git a/snippets/validators/languages/dotnet-client/Dockerfile b/snippets/validators/languages/dotnet-client/Dockerfile
new file mode 100644
index 00000000..d4f0e63c
--- /dev/null
+++ b/snippets/validators/languages/dotnet-client/Dockerfile
@@ -0,0 +1,8 @@
+FROM mcr.microsoft.com/dotnet/sdk:8.0
+
+WORKDIR /work
+
+COPY shared /harness-shared
+COPY languages/dotnet-client/harness /harness
+
+ENTRYPOINT ["/harness/run.sh"]
diff --git a/snippets/validators/languages/dotnet-client/harness/run.sh b/snippets/validators/languages/dotnet-client/harness/run.sh
new file mode 100755
index 00000000..b0f29d7b
--- /dev/null
+++ b/snippets/validators/languages/dotnet-client/harness/run.sh
@@ -0,0 +1,49 @@
+#!/bin/sh
+# Runs the staged .NET client snippet against a real LaunchDarkly environment.
+# The snippet uses top-level statements (no namespace), so the synthesized
+# .csproj is the bare minimum a `dotnet new console` would produce.
+set -eu
+
+. /harness-shared/lib.sh
+require_env LAUNCHDARKLY_MOBILE_KEY LAUNCHDARKLY_FLAG_KEY SNIPPET_ENTRYPOINT
+
+WORK=$(mktemp -d)
+trap 'rm -rf "$WORK"' EXIT
+cp -r /snippet/. "$WORK/"
+cd "$WORK"
+
+cat > HelloDotNetClient.csproj <<'EOF'
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+</Project>
+EOF
+
+if [ -f requirements.txt ]; then
+    while IFS= read -r line; do
+        [ -z "$line" ] && continue
+        dotnet add package "$line" --no-restore >/dev/null
+    done < requirements.txt
+fi
+
+dotnet restore --verbosity quiet >/dev/null 2>&1 || true
+
+LOG=$(mktemp)
+
+# .NET client snippet exits naturally after evaluating the flag (calls
+# client.Dispose()), so we don't need CI=1 nor a long timeout.
+timeout --signal=TERM 90s dotnet run --project . --verbosity quiet >"$LOG" 2>&1 &
+PID=$!
+
+deadline=$(( $(date +%s) + 80 ))
+if await_success_line "$LOG" "$PID" "$deadline"; then
+    exit 0
+fi
+
+kill -TERM "$PID" 2>/dev/null || true
+wait "$PID" 2>/dev/null || true
+fail_with_log "$LOG" "did not see expected line: feature flag evaluates to true"
diff --git a/snippets/validators/languages/dotnet-client/runner.yaml b/snippets/validators/languages/dotnet-client/runner.yaml
new file mode 100644
index 00000000..6867bf81
--- /dev/null
+++ b/snippets/validators/languages/dotnet-client/runner.yaml
@@ -0,0 +1,3 @@
+mode: docker
+runs-on: ubuntu-latest
+image-prefix: sdk-snippets/dotnet-client-validator
diff --git a/snippets/validators/languages/dotnet-server/Dockerfile b/snippets/validators/languages/dotnet-server/Dockerfile
new file mode 100644
index 00000000..debf5a1e
--- /dev/null
+++ b/snippets/validators/languages/dotnet-server/Dockerfile
@@ -0,0 +1,8 @@
+FROM mcr.microsoft.com/dotnet/sdk:8.0
+
+WORKDIR /work
+
+COPY shared /harness-shared
+COPY languages/dotnet-server/harness /harness
+
+ENTRYPOINT ["/harness/run.sh"]
diff --git a/snippets/validators/languages/dotnet-server/harness/run.sh b/snippets/validators/languages/dotnet-server/harness/run.sh
new file mode 100755
index 00000000..0561e5ab
--- /dev/null
+++ b/snippets/validators/languages/dotnet-server/harness/run.sh
@@ -0,0 +1,51 @@
+#!/bin/sh
+# Runs the staged .NET server snippet against a real LaunchDarkly environment.
+# Synthesizes a minimal .csproj around the snippet's Program.cs and pulls
+# whatever NuGet packages the snippet's `validation.requirements` lists.
+set -eu
+
+. /harness-shared/lib.sh
+require_env LAUNCHDARKLY_SDK_KEY LAUNCHDARKLY_FLAG_KEY SNIPPET_ENTRYPOINT
+
+WORK=$(mktemp -d)
+trap 'rm -rf "$WORK"' EXIT
+cp -r /snippet/. "$WORK/"
+cd "$WORK"
+
+# .NET wants a project file; gonfalon's flow uses Visual Studio's "new
+# console app" wizard which creates one. We synthesize the minimum.
+cat > HelloDotNet.csproj <<'EOF'
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>disable</Nullable>
+    <RootNamespace>HelloDotNet</RootNamespace>
+    <AssemblyName>HelloDotNet</AssemblyName>
+  </PropertyGroup>
+</Project>
+EOF
+
+if [ -f requirements.txt ]; then
+    while IFS= read -r line; do
+        [ -z "$line" ] && continue
+        # `dotnet add package` does not accept --verbosity; redirect noise to /dev/null.
+        dotnet add package "$line" --no-restore >/dev/null
+    done < requirements.txt
+fi
+
+dotnet restore --verbosity quiet >/dev/null 2>&1 || true
+
+LOG=$(mktemp)
+
+CI=1 timeout --signal=TERM 180s dotnet run --project . --verbosity quiet >"$LOG" 2>&1 &
+PID=$!
+
+deadline=$(( $(date +%s) + 170 ))
+if await_success_line "$LOG" "$PID" "$deadline"; then
+    exit 0
+fi
+
+kill -TERM "$PID" 2>/dev/null || true
+wait "$PID" 2>/dev/null || true
+fail_with_log "$LOG" "did not see expected line: feature flag evaluates to true"
diff --git a/snippets/validators/languages/dotnet-server/runner.yaml b/snippets/validators/languages/dotnet-server/runner.yaml
new file mode 100644
index 00000000..117c59e5
--- /dev/null
+++ b/snippets/validators/languages/dotnet-server/runner.yaml
@@ -0,0 +1,3 @@
+mode: docker
+runs-on: ubuntu-latest
+image-prefix: sdk-snippets/dotnet-server-validator
diff --git a/snippets/validators/languages/erlang-server/Dockerfile b/snippets/validators/languages/erlang-server/Dockerfile
new file mode 100644
index 00000000..ddc1d444
--- /dev/null
+++ b/snippets/validators/languages/erlang-server/Dockerfile
@@ -0,0 +1,93 @@
+FROM erlang:26
+
+# rebar3 ships with the official erlang image.
+#
+# Pre-bake a hello_erlang OTP application matching the structure
+# gonfalon's Get Started flow walks the user through:
+#   - rebar.config pulls launchdarkly_server_sdk from Hex (alias ldclient).
+#   - hello_erlang.app.src lists ldclient as an application.
+#   - hello_erlang_sup.erl supervises hello_erlang_server.
+#
+# Per-validate cycles only swap hello_erlang_server.erl, run a small
+# rebar3 compile (incremental against the warmed _build), and execute a
+# rebar3 eval that calls into the gen_server and prints the EXAM-HELLO
+# canonical line. The snippet itself is a gen_server with no main entry
+# point — gonfalon's flow expects the user to drop into rebar3 shell
+# and call manually. We synthesize the equivalent at validate time.
+
+ARG LD_ERLANG_VERSION=3.9.0
+
+WORKDIR /opt/hello_erlang
+
+RUN rebar3 new app hello_erlang \
+    && mv hello_erlang/* hello_erlang/.??* . 2>/dev/null || true \
+    && rmdir hello_erlang 2>/dev/null || true
+
+# Pin the SDK + add it to the app-src + supervisor child spec. We bake
+# the same content the snippet's manifest-fragments would otherwise
+# describe.
+RUN printf '{erl_opts, [debug_info]}.\n\
+{deps, [\n\
+  {ldclient, "%s", {pkg, launchdarkly_server_sdk}}\n\
+]}.\n\
+{shell, [\n\
+  {apps, [hello_erlang]}\n\
+]}.\n' "${LD_ERLANG_VERSION}" > rebar.config
+
+RUN printf '{application, hello_erlang,\n\
+ [{description, "Hello LaunchDarkly"},\n\
+  {vsn, "0.1.0"},\n\
+  {registered, []},\n\
+  {mod, {hello_erlang_app, []}},\n\
+  {applications,\n\
+   [kernel,\n\
+    stdlib,\n\
+    ldclient\n\
+   ]},\n\
+  {env,[]},\n\
+  {modules, []}\n\
+ ]}.\n' > src/hello_erlang.app.src
+
+RUN cat > src/hello_erlang_sup.erl <<'EOF'
+-module(hello_erlang_sup).
+-behaviour(supervisor).
+-export([start_link/0]).
+-export([init/1]).
+-define(SERVER, ?MODULE).
+
+start_link() ->
+    supervisor:start_link({local, ?SERVER}, ?MODULE, []).
+
+init([]) ->
+    SupFlags = #{strategy => one_for_all, intensity => 0, period => 1},
+    ChildSpecs = [{console,
+            {hello_erlang_server, start_link, []},
+            permanent, 5000, worker, [hello_erlang_server]}],
+    {ok, {SupFlags, ChildSpecs}}.
+EOF
+
+# Placeholder server module — replaced per-validate.
+RUN cat > src/hello_erlang_server.erl <<'EOF'
+-module(hello_erlang_server).
+-behaviour(gen_server).
+-export([start_link/0, init/1, handle_call/3, handle_cast/2,
+         handle_info/2, terminate/2, code_change/3]).
+-export([get/3]).
+start_link() -> gen_server:start_link({local, ?MODULE}, ?MODULE, [], []).
+get(_, F, _) -> F.
+init(_) -> {ok, []}.
+handle_call(_, _, S) -> {reply, ok, S}.
+handle_cast(_, S) -> {noreply, S}.
+handle_info(_, S) -> {noreply, S}.
+terminate(_, _) -> ok.
+code_change(_, S, _) -> {ok, S}.
+EOF
+
+RUN rebar3 compile
+
+WORKDIR /work
+
+COPY shared /harness-shared
+COPY languages/erlang-server/harness /harness
+
+ENTRYPOINT ["/harness/run.sh"]
diff --git a/snippets/validators/languages/erlang-server/harness/run.sh b/snippets/validators/languages/erlang-server/harness/run.sh
new file mode 100755
index 00000000..e876f59e
--- /dev/null
+++ b/snippets/validators/languages/erlang-server/harness/run.sh
@@ -0,0 +1,48 @@
+#!/bin/sh
+# Builds the staged Erlang snippet against the pre-baked rebar3 project,
+# then runs `rebar3 eval` to start the gen_server, evaluate the flag,
+# and print the EXAM-HELLO canonical line.
+#
+# The snippet is a gen_server module — the user-facing Get Started flow
+# expects the user to launch `rebar3 shell` and call into it manually.
+# For CI we synthesize the equivalent: ensure_all_started, sleep so the
+# SDK has time to fetch flags, call hello_erlang_server:get/3, format
+# the canonical line, halt.
+set -eu
+
+. /harness-shared/lib.sh
+require_env LAUNCHDARKLY_SDK_KEY LAUNCHDARKLY_FLAG_KEY SNIPPET_ENTRYPOINT
+
+cp "/snippet/$SNIPPET_ENTRYPOINT" /opt/hello_erlang/src/hello_erlang_server.erl
+
+cd /opt/hello_erlang
+rebar3 compile >/tmp/build.log 2>&1 \
+    || { cat /tmp/build.log >&2; exit 1; }
+
+LOG=$(mktemp)
+
+# rebar3 doesn't ship `eval` in the bundled tasks, so drive `erl`
+# directly. The compiled beams + transitive deps live under
+# _build/default/lib/*/ebin. -noshell + -s init stop wraps the eval in
+# a non-interactive session that exits when init:stop/0 fires.
+EVAL_EXPR="application:ensure_all_started(hello_erlang),
+timer:sleep(3000),
+FlagKey = <<\"$LAUNCHDARKLY_FLAG_KEY\">>,
+Result = hello_erlang_server:get(FlagKey, false, <<\"example-user-key\">>),
+io:format(\"The ~s feature flag evaluates to ~p~n\", [FlagKey, Result]),
+init:stop()."
+
+timeout --signal=TERM 60s erl \
+    -pa _build/default/lib/*/ebin \
+    -noshell \
+    -eval "$EVAL_EXPR" >"$LOG" 2>&1 &
+PID=$!
+
+deadline=$(( $(date +%s) + 55 ))
+if await_success_line "$LOG" "$PID" "$deadline"; then
+    exit 0
+fi
+
+kill -TERM "$PID" 2>/dev/null || true
+wait "$PID" 2>/dev/null || true
+fail_with_log "$LOG" "did not see expected line: feature flag evaluates to true"
diff --git a/snippets/validators/languages/erlang-server/runner.yaml b/snippets/validators/languages/erlang-server/runner.yaml
new file mode 100644
index 00000000..c933b308
--- /dev/null
+++ b/snippets/validators/languages/erlang-server/runner.yaml
@@ -0,0 +1,3 @@
+mode: docker
+runs-on: ubuntu-latest
+image-prefix: sdk-snippets/erlang-server-validator
diff --git a/snippets/validators/languages/flutter-client/Dockerfile b/snippets/validators/languages/flutter-client/Dockerfile
new file mode 100644
index 00000000..ecf95bbf
--- /dev/null
+++ b/snippets/validators/languages/flutter-client/Dockerfile
@@ -0,0 +1,53 @@
+FROM mcr.microsoft.com/playwright:v1.59.1-noble
+
+# Flutter SDK + transitive build dependencies. The snippet's main.dart
+# uses `provider` and Material widgets, which compile cleanly to web
+# (no native plugins). Web target keeps the validator container in the
+# Linux/x86 lane — no emulators or simulators required.
+ARG FLUTTER_VERSION=3.27.4
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+        curl xz-utils git unzip ca-certificates \
+        # Flutter doctor dependencies for web target:
+        libgtk-3-0 \
+    && rm -rf /var/lib/apt/lists/*
+
+# Flutter wants a non-root user by default; per their warning we set
+# the runner ENV. We're inside an isolated build container so root is fine.
+ENV PUB_CACHE=/opt/pub-cache
+ENV FLUTTER_HOME=/opt/flutter
+ENV PATH="${FLUTTER_HOME}/bin:${PATH}"
+
+RUN curl -fsSL "https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_${FLUTTER_VERSION}-stable.tar.xz" \
+        | tar -xJ -C /opt \
+    && git config --global --add safe.directory /opt/flutter \
+    && flutter config --no-analytics --enable-web
+
+# Pre-bake a hello-flutter web project mirroring what `flutter create`
+# produces, with the SDK + provider deps already pinned. Per-validate
+# cycles overwrite lib/main.dart and re-run `flutter build web` against
+# the warmed pub cache + dart kernel cache.
+ARG LD_FLUTTER_SDK_VERSION=4.16.0
+ARG PROVIDER_VERSION=6.1.2
+
+RUN flutter create --platforms=web --org com.launchdarkly /opt/hello_flutter
+WORKDIR /opt/hello_flutter
+
+# Replace the default deps with our pinned set so the lockfile is
+# stable and the warmed kernel cache below applies to every per-validate
+# build.
+RUN sed -i "/^dependencies:/,/^[a-z]/{/^  cupertino_icons/d}" pubspec.yaml \
+    && sed -i "/^dependencies:/a\\  launchdarkly_flutter_client_sdk: ${LD_FLUTTER_SDK_VERSION}\\n  provider: ${PROVIDER_VERSION}" pubspec.yaml \
+    && flutter pub get
+
+# Pre-warm the web build so first per-validate is incremental.
+RUN flutter build web --release --no-pub
+
+WORKDIR /work
+
+COPY shared /harness-shared
+COPY languages/flutter-client/harness /harness
+
+RUN cd /harness && npm install --silent --no-audit --no-fund --no-progress playwright@1.59.1
+
+ENTRYPOINT ["/harness/run.sh"]
diff --git a/snippets/validators/languages/flutter-client/harness/check.js b/snippets/validators/languages/flutter-client/harness/check.js
new file mode 100644
index 00000000..36f0fb56
--- /dev/null
+++ b/snippets/validators/languages/flutter-client/harness/check.js
@@ -0,0 +1,65 @@
+// Loads the locally-served Flutter web bundle in headless Chromium and
+// polls the rendered Flutter canvas for the EXAM-HELLO success line.
+//
+// Flutter web renders text into <flt-semantics> elements (semantics
+// tree) once the page has bootstrapped. Some Flutter releases gate the
+// semantics tree behind explicit activation; for those we fall back to
+// the raw <flutter-view> DOM, which still contains the rendered text in
+// HTML mode. We probe both.
+const { chromium } = require('/harness/node_modules/playwright');
+
+(async () => {
+  const url = process.env.FLUTTER_PREVIEW_URL || 'http://localhost:4173';
+  const successRe = /feature flag evaluates to true/i;
+
+  const browser = await chromium.launch();
+  const context = await browser.newContext();
+  const page = await context.newPage();
+
+  page.on('console', msg => console.log('[browser]', msg.text()));
+  page.on('pageerror', err => console.log('[browser:error]', err.message));
+
+  for (let i = 0; i < 25; i++) {
+    try {
+      await page.goto(url);
+      break;
+    } catch {
+      await new Promise(r => setTimeout(r, 200));
+    }
+  }
+
+  // Force semantic tree on so the Text widget's content lands in the DOM.
+  await page.evaluate(() => {
+    if (window.flutterSemanticsTree) return;
+    const enable = () => {
+      try {
+        const placeholder = document.querySelector('flt-semantics-placeholder');
+        if (placeholder) placeholder.click();
+      } catch {}
+    };
+    enable();
+    setTimeout(enable, 1000);
+  });
+
+  const deadline = Date.now() + 60_000;
+  while (Date.now() < deadline) {
+    const text = (await page.textContent('body')) || '';
+    if (successRe.test(text)) {
+      console.log(text.replace(/\s+/g, ' ').trim());
+      console.log('validator: ok');
+      await browser.close();
+      process.exit(0);
+    }
+    await page.waitForTimeout(500);
+  }
+
+  const finalText = (await page.textContent('body')) || '';
+  console.error('validator: did not see expected line: feature flag evaluates to true');
+  console.error('--- final body text ---');
+  console.error(finalText.replace(/\s+/g, ' ').trim());
+  await browser.close();
+  process.exit(1);
+})().catch((err) => {
+  console.error('validator: harness error:', err.message);
+  process.exit(1);
+});
diff --git a/snippets/validators/languages/flutter-client/harness/run.sh b/snippets/validators/languages/flutter-client/harness/run.sh
new file mode 100755
index 00000000..d4b2835a
--- /dev/null
+++ b/snippets/validators/languages/flutter-client/harness/run.sh
@@ -0,0 +1,43 @@
+#!/bin/sh
+# Builds the staged Flutter snippet against the pre-baked web project and
+# runs the Playwright DOM check against a static-served bundle.
+#
+# The snippet's main.dart pulls credentials via
+# `CredentialSource.fromEnvironment()`, which reads the
+# LAUNCHDARKLY_CLIENT_SIDE_ID / LAUNCHDARKLY_MOBILE_KEY values that were
+# baked into the build via --dart-define. Mobile keys aren't valid for
+# the web target, so we only forward CLIENT_SIDE_ID here.
+set -eu
+
+. /harness-shared/lib.sh
+require_env LAUNCHDARKLY_CLIENT_SIDE_ID LAUNCHDARKLY_FLAG_KEY SNIPPET_ENTRYPOINT
+
+cp "/snippet/$SNIPPET_ENTRYPOINT" /opt/hello_flutter/lib/main.dart
+
+cd /opt/hello_flutter
+
+flutter build web --release --no-pub \
+    --dart-define LAUNCHDARKLY_CLIENT_SIDE_ID="${LAUNCHDARKLY_CLIENT_SIDE_ID}" \
+    >/tmp/build.log 2>&1 \
+    || { cat /tmp/build.log >&2; exit 1; }
+
+# Static-serve the build output. python3 is in the playwright base image.
+PREVIEW_LOG=$(mktemp)
+( cd build/web && python3 -m http.server 4173 ) >"$PREVIEW_LOG" 2>&1 &
+PREVIEW_PID=$!
+
+# python's http.server writes "Serving HTTP on …" once it binds.
+for _ in $(seq 1 20); do
+    if grep -q 'Serving' "$PREVIEW_LOG" 2>/dev/null; then
+        break
+    fi
+    sleep 0.2
+done
+
+cleanup() {
+    kill -TERM "$PREVIEW_PID" 2>/dev/null || true
+    wait "$PREVIEW_PID" 2>/dev/null || true
+}
+trap cleanup EXIT
+
+FLUTTER_PREVIEW_URL=http://localhost:4173 exec node /harness/check.js
diff --git a/snippets/validators/languages/flutter-client/runner.yaml b/snippets/validators/languages/flutter-client/runner.yaml
new file mode 100644
index 00000000..d54b6809
--- /dev/null
+++ b/snippets/validators/languages/flutter-client/runner.yaml
@@ -0,0 +1,3 @@
+mode: docker
+runs-on: ubuntu-latest
+image-prefix: sdk-snippets/flutter-client-validator
diff --git a/snippets/validators/languages/go/Dockerfile b/snippets/validators/languages/go/Dockerfile
new file mode 100644
index 00000000..7f21abba
--- /dev/null
+++ b/snippets/validators/languages/go/Dockerfile
@@ -0,0 +1,10 @@
+# Build context is `validators/`. See validators/languages/python/Dockerfile
+# for the rationale.
+FROM golang:1.24
+
+WORKDIR /work
+
+COPY shared /harness-shared
+COPY languages/go/harness /harness
+
+ENTRYPOINT ["/harness/run.sh"]
diff --git a/snippets/validators/languages/go/harness/run.sh b/snippets/validators/languages/go/harness/run.sh
new file mode 100755
index 00000000..d3b76941
--- /dev/null
+++ b/snippets/validators/languages/go/harness/run.sh
@@ -0,0 +1,39 @@
+#!/bin/sh
+# Runs the staged Go snippet against a real LaunchDarkly environment.
+# Inputs (env): LAUNCHDARKLY_SDK_KEY, LAUNCHDARKLY_FLAG_KEY, SNIPPET_ENTRYPOINT.
+#
+# The gonfalon `go mod init` step is reproduced here: we initialize a
+# throwaway module in the working dir and let `go mod tidy` resolve the
+# imports the snippet brings in. This mirrors what a developer following
+# the Get Started instructions would do.
+set -eu
+
+. /harness-shared/lib.sh
+require_env LAUNCHDARKLY_SDK_KEY LAUNCHDARKLY_FLAG_KEY SNIPPET_ENTRYPOINT
+
+# Stage the snippet contents into a writable workdir (the bind-mount is
+# read-only). go mod init writes go.mod / go.sum, so we can't operate on
+# /snippet directly.
+WORK=$(mktemp -d)
+trap 'rm -rf "$WORK"' EXIT
+cp -r /snippet/. "$WORK/"
+cd "$WORK"
+
+go mod init example/hello-go >/dev/null 2>&1
+go mod tidy >/dev/null 2>&1
+
+LOG=$(mktemp)
+
+# CI=1 makes the snippet exit after the first evaluation instead of blocking
+# on the listener loop.
+CI=1 go run "$SNIPPET_ENTRYPOINT" >"$LOG" 2>&1 &
+PID=$!
+
+deadline=$(( $(date +%s) + 60 ))
+if await_success_line "$LOG" "$PID" "$deadline"; then
+    exit 0
+fi
+
+kill -TERM "$PID" 2>/dev/null || true
+wait "$PID" 2>/dev/null || true
+fail_with_log "$LOG" "did not see expected line: feature flag evaluates to true"
diff --git a/snippets/validators/languages/go/runner.yaml b/snippets/validators/languages/go/runner.yaml
new file mode 100644
index 00000000..b23424af
--- /dev/null
+++ b/snippets/validators/languages/go/runner.yaml
@@ -0,0 +1,3 @@
+mode: docker
+runs-on: ubuntu-latest
+image-prefix: sdk-snippets/go-validator
diff --git a/snippets/validators/languages/haskell-server/Dockerfile b/snippets/validators/languages/haskell-server/Dockerfile
new file mode 100644
index 00000000..3df10098
--- /dev/null
+++ b/snippets/validators/languages/haskell-server/Dockerfile
@@ -0,0 +1,44 @@
+FROM haskell:9.6.7-bullseye
+
+# launchdarkly-server-sdk's transitive deps need libpcre + zlib + openssl.
+RUN apt-get update && apt-get install -y --no-install-recommends \
+        libpcre3-dev zlib1g-dev libssl-dev \
+        ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+
+# Pre-build a cabal project mirroring what the snippet's `stack new` flow
+# produces, so per-validate cycles only recompile the user's Main.hs.
+# The snippet's stack.yaml/package.yaml fragments aren't exercised by the
+# validator (they're just rendered into ld-application's get-started
+# instructions); we build the equivalent cabal project here directly.
+ARG LD_HASKELL_VERSION=4.5.1
+RUN mkdir -p /opt/hello-haskell/app
+WORKDIR /opt/hello-haskell
+
+RUN printf 'cabal-version: 2.2\n\
+name: hello-haskell\n\
+version: 0.1.0.0\n\
+\n\
+executable hello-haskell-exe\n\
+  main-is: Main.hs\n\
+  hs-source-dirs: app\n\
+  build-depends:\n\
+    base >= 4.7 && < 5,\n\
+    text,\n\
+    launchdarkly-server-sdk == %s\n\
+  default-language: Haskell2010\n\
+  ghc-options: -threaded -rtsopts -with-rtsopts=-N\n' \
+        "${LD_HASKELL_VERSION}" > hello-haskell.cabal
+
+# Placeholder Main.hs — replaced per-validate. We need *some* file here
+# so `cabal build` succeeds and primes the dependency cache.
+RUN printf 'module Main where\nmain :: IO ()\nmain = putStrLn "placeholder"\n' > app/Main.hs
+
+RUN cabal update && cabal build --only-dependencies && cabal build
+
+WORKDIR /work
+
+COPY shared /harness-shared
+COPY languages/haskell-server/harness /harness
+
+ENTRYPOINT ["/harness/run.sh"]
diff --git a/snippets/validators/languages/haskell-server/harness/run.sh b/snippets/validators/languages/haskell-server/harness/run.sh
new file mode 100755
index 00000000..30082221
--- /dev/null
+++ b/snippets/validators/languages/haskell-server/harness/run.sh
@@ -0,0 +1,29 @@
+#!/bin/sh
+# Runs the staged Haskell snippet against a real LaunchDarkly environment.
+# The Dockerfile pre-bootstrapped a cabal project at /opt/hello-haskell
+# with launchdarkly-server-sdk + text already compiled. Per-validate just
+# swaps in the user's Main.hs and does an incremental rebuild.
+set -eu
+
+. /harness-shared/lib.sh
+require_env LAUNCHDARKLY_SDK_KEY LAUNCHDARKLY_FLAG_KEY SNIPPET_ENTRYPOINT
+
+cp "/snippet/$SNIPPET_ENTRYPOINT" /opt/hello-haskell/app/Main.hs
+
+cd /opt/hello-haskell
+cabal build >/tmp/build.log 2>&1 \
+    || { cat /tmp/build.log >&2; exit 1; }
+
+LOG=$(mktemp)
+
+timeout --signal=TERM 60s cabal run hello-haskell-exe >"$LOG" 2>&1 &
+PID=$!
+
+deadline=$(( $(date +%s) + 55 ))
+if await_success_line "$LOG" "$PID" "$deadline"; then
+    exit 0
+fi
+
+kill -TERM "$PID" 2>/dev/null || true
+wait "$PID" 2>/dev/null || true
+fail_with_log "$LOG" "did not see expected line: feature flag evaluates to true"
diff --git a/snippets/validators/languages/haskell-server/runner.yaml b/snippets/validators/languages/haskell-server/runner.yaml
new file mode 100644
index 00000000..ee8ff76e
--- /dev/null
+++ b/snippets/validators/languages/haskell-server/runner.yaml
@@ -0,0 +1,3 @@
+mode: docker
+runs-on: ubuntu-latest
+image-prefix: sdk-snippets/haskell-server-validator
diff --git a/snippets/validators/languages/ios-client/harness/run.sh b/snippets/validators/languages/ios-client/harness/run.sh
new file mode 100755
index 00000000..8a9b7d27
--- /dev/null
+++ b/snippets/validators/languages/ios-client/harness/run.sh
@@ -0,0 +1,104 @@
+#!/bin/sh
+# Validates the iOS snippet on macos-latest with xcodebuild + iOS
+# Simulator. The snippet's AppDelegate + ViewController are dropped
+# into a pre-baked Xcode project (generated from the scaffold's
+# project.yml via xcodegen), pointed at the launchdarkly-ios-client-sdk
+# Swift Package, and exercised via an XCTest case.
+#
+# `mode: native` — xcodebuild + iOS Simulator don't run inside Linux
+# containers, so the CI cell sets runs-on: macos-latest.
+set -eu
+
+# The runner doesn't mount /harness-shared (no docker), so source the
+# helpers via a relative path.
+. "$(cd "$(dirname "$0")/../../../shared" && pwd)/lib.sh"
+
+require_env LAUNCHDARKLY_MOBILE_KEY LAUNCHDARKLY_FLAG_KEY SNIPPET_ENTRYPOINT
+
+SCAFFOLD="$(cd "$(dirname "$0")/../scaffold" && pwd)"
+
+WORK=$(mktemp -d)
+trap 'rm -rf "$WORK"' EXIT
+
+cp -R "$SCAFFOLD"/. "$WORK"/
+cp "$SNIPPET_DIR/AppDelegate.swift" "$WORK/Sources/AppDelegate.swift"
+cp "$SNIPPET_DIR/ViewController.swift" "$WORK/Sources/ViewController.swift"
+
+cd "$WORK"
+
+if ! command -v xcodegen >/dev/null 2>&1; then
+    brew install xcodegen
+fi
+xcodegen generate
+
+# Pick whichever iPhone simulator is currently installed on this
+# runner. macos-latest's iPhone roster shifts per Xcode release —
+# hardcoding "iPhone 15" stops working when GitHub bumps the image.
+SIM_NAME=$(xcrun simctl list devices available --json | python3 -c '
+import sys, json, re
+data = json.load(sys.stdin)
+best = None
+best_num = -1
+for runtime, devs in data.get("devices", {}).items():
+    if "iOS" not in runtime:
+        continue
+    for dev in devs:
+        name = dev.get("name", "")
+        if not dev.get("isAvailable", False):
+            continue
+        if not name.startswith("iPhone"):
+            continue
+        # Prefer plain "iPhone <N>" over Pro/Max/Plus variants so the
+        # destination string is shortest and most likely to match.
+        m = re.match(r"^iPhone (\d+)$", name)
+        if m and int(m.group(1)) > best_num:
+            best_num = int(m.group(1))
+            best = name
+if best is None:
+    # Fallback: any available iPhone, max version-suffix wins.
+    cand = []
+    for runtime, devs in data.get("devices", {}).items():
+        if "iOS" not in runtime:
+            continue
+        for dev in devs:
+            if dev.get("isAvailable") and dev.get("name", "").startswith("iPhone"):
+                cand.append(dev["name"])
+    best = sorted(cand)[-1] if cand else "iPhone 16"
+print(best)
+')
+DESTINATION="platform=iOS Simulator,name=$SIM_NAME"
+echo "validator: targeting $DESTINATION"
+
+LOG=$(mktemp)
+
+# `-resolvePackageDependencies` is an action mutually exclusive with
+# `test`; xcodebuild silently runs only the resolve when both are
+# passed. Resolve packages first, then run the test action.
+xcodebuild -resolvePackageDependencies \
+    -project HelloIOS.xcodeproj \
+    -scheme HelloIOS \
+    >>"$LOG" 2>&1
+
+set +e
+SIMCTL_CHILD_LAUNCHDARKLY_MOBILE_KEY="$LAUNCHDARKLY_MOBILE_KEY" \
+SIMCTL_CHILD_LAUNCHDARKLY_FLAG_KEY="$LAUNCHDARKLY_FLAG_KEY" \
+xcodebuild test \
+    -project HelloIOS.xcodeproj \
+    -scheme HelloIOS \
+    -destination "$DESTINATION" \
+    CODE_SIGNING_ALLOWED=NO \
+    CODE_SIGN_IDENTITY="" \
+    >>"$LOG" 2>&1
+XCB_EXIT=$?
+set -e
+
+if grep -q "feature flag evaluates to true" "$LOG"; then
+    grep -E "feature flag evaluates to true|validator: rendered" "$LOG" | head -3
+    echo "validator: ok"
+    exit 0
+fi
+
+echo "validator: did not see expected line: feature flag evaluates to true (xcodebuild exit=$XCB_EXIT)" >&2
+echo "--- last 100 lines of xcodebuild output ---" >&2
+tail -100 "$LOG" >&2
+exit 1
diff --git a/snippets/validators/languages/ios-client/runner.yaml b/snippets/validators/languages/ios-client/runner.yaml
new file mode 100644
index 00000000..8ae21967
--- /dev/null
+++ b/snippets/validators/languages/ios-client/runner.yaml
@@ -0,0 +1,2 @@
+mode: native
+runs-on: macos-latest
diff --git a/snippets/validators/languages/ios-client/scaffold/Sources/AppDelegate.swift b/snippets/validators/languages/ios-client/scaffold/Sources/AppDelegate.swift
new file mode 100644
index 00000000..4b6c8a97
--- /dev/null
+++ b/snippets/validators/languages/ios-client/scaffold/Sources/AppDelegate.swift
@@ -0,0 +1,11 @@
+// Placeholder — replaced per-validate by the staged snippet.
+import UIKit
+
+@UIApplicationMain
+class AppDelegate: UIResponder, UIApplicationDelegate {
+    var window: UIWindow?
+    func application(_ application: UIApplication,
+                     didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
+        return true
+    }
+}
diff --git a/snippets/validators/languages/ios-client/scaffold/Sources/Info.plist b/snippets/validators/languages/ios-client/scaffold/Sources/Info.plist
new file mode 100644
index 00000000..f7eebf76
--- /dev/null
+++ b/snippets/validators/languages/ios-client/scaffold/Sources/Info.plist
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>CFBundleDevelopmentRegion</key>
+    <string>$(DEVELOPMENT_LANGUAGE)</string>
+    <key>CFBundleExecutable</key>
+    <string>$(EXECUTABLE_NAME)</string>
+    <key>CFBundleIdentifier</key>
+    <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+    <key>CFBundleInfoDictionaryVersion</key>
+    <string>6.0</string>
+    <key>CFBundleName</key>
+    <string>$(PRODUCT_NAME)</string>
+    <key>CFBundlePackageType</key>
+    <string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+    <key>CFBundleShortVersionString</key>
+    <string>1.0</string>
+    <key>CFBundleVersion</key>
+    <string>1</string>
+    <key>LSRequiresIPhoneOS</key>
+    <true/>
+    <key>UIRequiredDeviceCapabilities</key>
+    <array>
+        <string>armv7</string>
+    </array>
+    <key>UISupportedInterfaceOrientations</key>
+    <array>
+        <string>UIInterfaceOrientationPortrait</string>
+    </array>
+</dict>
+</plist>
diff --git a/snippets/validators/languages/ios-client/scaffold/Sources/ViewController.swift b/snippets/validators/languages/ios-client/scaffold/Sources/ViewController.swift
new file mode 100644
index 00000000..9a5a52a7
--- /dev/null
+++ b/snippets/validators/languages/ios-client/scaffold/Sources/ViewController.swift
@@ -0,0 +1,6 @@
+// Placeholder — replaced per-validate by the staged snippet.
+import UIKit
+
+class ViewController: UIViewController {
+    @IBOutlet weak var featureFlagLabel: UILabel!
+}
diff --git a/snippets/validators/languages/ios-client/scaffold/Tests/SnippetTest.swift b/snippets/validators/languages/ios-client/scaffold/Tests/SnippetTest.swift
new file mode 100644
index 00000000..513d31b5
--- /dev/null
+++ b/snippets/validators/languages/ios-client/scaffold/Tests/SnippetTest.swift
@@ -0,0 +1,57 @@
+// Drives the snippet's AppDelegate + ViewController against the live
+// LaunchDarkly streaming API. The host app's AppDelegate.didFinishLaunching
+// has already called LDClient.start(...) by the time this test runs.
+import XCTest
+import LaunchDarkly
+@testable import HelloIOS
+
+final class SnippetTest: XCTestCase {
+    func testFlagEvaluatesToTrue() throws {
+        let flagKey = ProcessInfo.processInfo.environment["LAUNCHDARKLY_FLAG_KEY"]
+            ?? "sample-feature"
+
+        guard let ld = LDClient.get() else {
+            XCTFail("LDClient.get() returned nil — AppDelegate.setUpLDClient never ran")
+            return
+        }
+
+        // The AppDelegate uses startWaitSeconds: 30, so by the time
+        // didFinishLaunching returns the SDK has either initialized or
+        // timed out. Poll boolVariation a few extra seconds in case the
+        // first event hasn't been processed yet.
+        let exp = expectation(description: "flag fetched")
+        var lastResult = false
+        let observer = NSObject()
+        ld.observe(key: flagKey, owner: observer) { changedFlag in
+            if case .bool(let b) = changedFlag.newValue, b {
+                lastResult = true
+                exp.fulfill()
+            }
+        }
+        // Also seed with the current value in case streaming has already
+        // delivered the flag before observe() registered.
+        if ld.boolVariation(forKey: flagKey, defaultValue: false) {
+            lastResult = true
+            exp.fulfill()
+        }
+        wait(for: [exp], timeout: 30.0)
+
+        // Drive the snippet's ViewController through the same code path
+        // gonfalon shows the user. The IBOutlet is wired manually so
+        // updateUi can write into a real label.
+        let vc = ViewController()
+        let label = UILabel()
+        vc.featureFlagLabel = label
+        vc.loadViewIfNeeded()
+        vc.viewDidLoad()
+        // viewDidLoad is async-ish — let one runloop spin so the
+        // observer callback has a chance to fire.
+        RunLoop.main.run(until: Date(timeIntervalSinceNow: 1.0))
+
+        let rendered = label.text ?? ""
+        print("validator: rendered=\(rendered)")
+        XCTAssertTrue(lastResult, "expected flag to evaluate to true")
+        XCTAssertTrue(rendered.lowercased().contains("feature flag evaluates to true"),
+                      "expected canonical line in label, got: \(rendered)")
+    }
+}
diff --git a/snippets/validators/languages/ios-client/scaffold/project.yml b/snippets/validators/languages/ios-client/scaffold/project.yml
new file mode 100644
index 00000000..bd7cae15
--- /dev/null
+++ b/snippets/validators/languages/ios-client/scaffold/project.yml
@@ -0,0 +1,61 @@
+name: HelloIOS
+options:
+  bundleIdPrefix: com.launchdarkly
+  deploymentTarget:
+    iOS: "16.0"
+  createIntermediateGroups: true
+
+# launchdarkly-ios-client-sdk via Swift Package Manager — avoids the
+# CocoaPods step described in the snippet for the user. We're testing
+# the snippet's runtime behavior, not the dependency manager itself.
+packages:
+  LaunchDarkly:
+    url: https://github.com/launchdarkly/ios-client-sdk
+    from: "11.0.0"
+
+targets:
+  HelloIOS:
+    type: application
+    platform: iOS
+    sources:
+      - path: Sources
+    info:
+      path: Sources/Info.plist
+      properties:
+        UILaunchStoryboardName: ""
+        CFBundleName: HelloIOS
+        CFBundleIdentifier: com.launchdarkly.HelloIOS
+        CFBundleVersion: "1"
+        CFBundleShortVersionString: "1.0"
+    dependencies:
+      - package: LaunchDarkly
+    settings:
+      base:
+        SWIFT_VERSION: "5.9"
+        PRODUCT_BUNDLE_IDENTIFIER: com.launchdarkly.HelloIOS
+        TARGETED_DEVICE_FAMILY: "1,2"
+        CODE_SIGNING_ALLOWED: "NO"
+        CODE_SIGN_IDENTITY: ""
+
+  HelloIOSTests:
+    type: bundle.unit-test
+    platform: iOS
+    sources:
+      - path: Tests
+    dependencies:
+      - target: HelloIOS
+    settings:
+      base:
+        SWIFT_VERSION: "5.9"
+        CODE_SIGNING_ALLOWED: "NO"
+        CODE_SIGN_IDENTITY: ""
+
+schemes:
+  HelloIOS:
+    build:
+      targets:
+        HelloIOS: all
+        HelloIOSTests: [test]
+    test:
+      targets:
+        - HelloIOSTests
diff --git a/snippets/validators/languages/jvm/Dockerfile b/snippets/validators/languages/jvm/Dockerfile
new file mode 100644
index 00000000..00243ba6
--- /dev/null
+++ b/snippets/validators/languages/jvm/Dockerfile
@@ -0,0 +1,8 @@
+FROM maven:3.9-eclipse-temurin-17
+
+WORKDIR /work
+
+COPY shared /harness-shared
+COPY languages/jvm/harness /harness
+
+ENTRYPOINT ["/harness/run.sh"]
diff --git a/snippets/validators/languages/jvm/harness/run.sh b/snippets/validators/languages/jvm/harness/run.sh
new file mode 100755
index 00000000..ffb22611
--- /dev/null
+++ b/snippets/validators/languages/jvm/harness/run.sh
@@ -0,0 +1,96 @@
+#!/bin/sh
+# Runs the staged Java snippet against a real LaunchDarkly environment.
+# Synthesizes a complete pom.xml around the snippet's App.java rather
+# than reproducing gonfalon's `mvn archetype:generate + manual fragment
+# pasting` flow — a developer following the gonfalon instructions ends
+# up with the same project shape, just authored manually.
+set -eu
+
+. /harness-shared/lib.sh
+require_env LAUNCHDARKLY_SDK_KEY LAUNCHDARKLY_FLAG_KEY SNIPPET_ENTRYPOINT
+
+WORK=$(mktemp -d)
+trap 'rm -rf "$WORK"' EXIT
+cp -r /snippet/. "$WORK/"
+cd "$WORK"
+
+# The gonfalon snippet says "Remove the prepopulated lines except the
+# first line" — the "first line" is `package com.launchdarkly.tutorial;`
+# which `mvn archetype:generate` writes for the user. The snippet itself
+# doesn't carry it (gonfalon's UI is showing only the body to type), so
+# we add it back here so javac can resolve the mainClass declared in
+# the synthesized pom.xml.
+appfile="$SNIPPET_ENTRYPOINT"
+if [ -f "$appfile" ] && ! head -1 "$appfile" | grep -q '^package '; then
+    tmp=$(mktemp)
+    printf 'package com.launchdarkly.tutorial;\n\n' > "$tmp"
+    cat "$appfile" >> "$tmp"
+    mv "$tmp" "$appfile"
+fi
+
+cat > pom.xml <<'EOF'
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>com.launchdarkly.tutorial</groupId>
+  <artifactId>hello-java</artifactId>
+  <version>1.0-SNAPSHOT</version>
+  <properties>
+    <maven.compiler.source>17</maven.compiler.source>
+    <maven.compiler.target>17</maven.compiler.target>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+  </properties>
+  <dependencies>
+    <dependency>
+      <groupId>com.launchdarkly</groupId>
+      <artifactId>launchdarkly-java-server-sdk</artifactId>
+      <!-- Pin a recent release so the validator is deterministic. The
+           gonfalon snippet shows ${version} fetched from Maven Central;
+           we don't reach out from inside the harness. -->
+      <version>7.13.4</version>
+    </dependency>
+  </dependencies>
+  <build>
+    <plugins>
+      <plugin>
+        <artifactId>maven-assembly-plugin</artifactId>
+        <configuration>
+          <archive>
+            <manifest>
+              <mainClass>com.launchdarkly.tutorial.App</mainClass>
+            </manifest>
+          </archive>
+          <descriptorRefs>
+            <descriptorRef>jar-with-dependencies</descriptorRef>
+          </descriptorRefs>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+</project>
+EOF
+
+LOG=$(mktemp)
+BUILDLOG=$(mktemp)
+
+# Compile + assemble. We keep mvn output in BUILDLOG and only print it
+# when the build fails, so a clean run is quiet.
+if ! mvn -B -q clean compile assembly:single -DskipTests >"$BUILDLOG" 2>&1; then
+    echo "validator: maven build failed" >&2
+    echo "--- mvn output ---" >&2
+    cat "$BUILDLOG" >&2
+    exit 1
+fi
+rm -f "$BUILDLOG"
+
+CI=1 timeout --signal=TERM 60s java -jar "target/hello-java-1.0-SNAPSHOT-jar-with-dependencies.jar" >"$LOG" 2>&1 &
+PID=$!
+
+deadline=$(( $(date +%s) + 50 ))
+if await_success_line "$LOG" "$PID" "$deadline"; then
+    exit 0
+fi
+
+kill -TERM "$PID" 2>/dev/null || true
+wait "$PID" 2>/dev/null || true
+fail_with_log "$LOG" "did not see expected line: feature flag evaluates to true"
diff --git a/snippets/validators/languages/jvm/runner.yaml b/snippets/validators/languages/jvm/runner.yaml
new file mode 100644
index 00000000..dd9c93a4
--- /dev/null
+++ b/snippets/validators/languages/jvm/runner.yaml
@@ -0,0 +1,3 @@
+mode: docker
+runs-on: ubuntu-latest
+image-prefix: sdk-snippets/jvm-validator
diff --git a/snippets/validators/languages/lua-server/Dockerfile b/snippets/validators/languages/lua-server/Dockerfile
new file mode 100644
index 00000000..8ff74759
--- /dev/null
+++ b/snippets/validators/languages/lua-server/Dockerfile
@@ -0,0 +1,45 @@
+FROM ubuntu:24.04
+
+# The Lua server SDK is a thin Lua wrapper over the C++ Server SDK's C
+# binding, so the validator image needs the C++ toolchain + the SDK's
+# transitive deps + lua + luarocks.
+RUN apt-get update && apt-get install -y --no-install-recommends \
+        build-essential cmake ninja-build pkg-config \
+        libboost-all-dev libssl-dev \
+        lua5.3 liblua5.3-dev luarocks \
+        git ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+
+# Build the C++ Server SDK as a shared library and install to a known
+# prefix; the lua rockspec's external_dependencies look up the C header
+# and shared lib from $LD_DIR/include and $LD_DIR/lib respectively.
+ARG CPP_SDKS_REF=launchdarkly-cpp-server-v3.10.1
+RUN git clone --depth 1 --branch "${CPP_SDKS_REF}" \
+        https://github.com/launchdarkly/cpp-sdks.git /opt/cpp-sdks \
+    && mkdir /opt/cpp-sdks/build && cd /opt/cpp-sdks/build \
+    && cmake -G Ninja \
+             -DBUILD_TESTING=OFF \
+             -DCMAKE_BUILD_TYPE=Release \
+             -DLD_BUILD_SHARED_LIBS=On \
+             -DCMAKE_INSTALL_PREFIX=/opt/cpp-sdks/install .. \
+    && cmake --build . --target launchdarkly-cpp-server \
+    && cmake --install . \
+    && cd / && rm -rf /opt/cpp-sdks/build /opt/cpp-sdks/.git
+
+ENV LD_LIBRARY_PATH=/opt/cpp-sdks/install/lib
+
+# Install the Lua server SDK rock against the built C++ shared lib.
+ARG LUA_SDK_VERSION=2.1.3-0
+RUN luarocks install --tree=/opt/lua-rocks \
+        launchdarkly-server-sdk ${LUA_SDK_VERSION} \
+        LD_DIR=/opt/cpp-sdks/install
+
+ENV LUA_PATH="/opt/lua-rocks/share/lua/5.3/?.lua;/opt/lua-rocks/share/lua/5.3/?/init.lua;;"
+ENV LUA_CPATH="/opt/lua-rocks/lib/lua/5.3/?.so;;"
+
+WORKDIR /work
+
+COPY shared /harness-shared
+COPY languages/lua-server/harness /harness
+
+ENTRYPOINT ["/harness/run.sh"]
diff --git a/snippets/validators/languages/lua-server/harness/run.sh b/snippets/validators/languages/lua-server/harness/run.sh
new file mode 100755
index 00000000..0ab100d0
--- /dev/null
+++ b/snippets/validators/languages/lua-server/harness/run.sh
@@ -0,0 +1,24 @@
+#!/bin/sh
+# Runs the staged Lua snippet against a real LaunchDarkly environment.
+# The Dockerfile pre-built the C++ Server SDK shared lib, installed the
+# Lua wrapper rock against it, and pinned LUA_PATH/LUA_CPATH/LD_LIBRARY_PATH
+# so `lua` finds the launchdarkly_server_sdk module without any per-validate
+# setup.
+set -eu
+
+. /harness-shared/lib.sh
+require_env LAUNCHDARKLY_SDK_KEY LAUNCHDARKLY_FLAG_KEY SNIPPET_ENTRYPOINT
+
+LOG=$(mktemp)
+
+timeout --signal=TERM 60s lua5.3 "/snippet/$SNIPPET_ENTRYPOINT" >"$LOG" 2>&1 &
+PID=$!
+
+deadline=$(( $(date +%s) + 55 ))
+if await_success_line "$LOG" "$PID" "$deadline"; then
+    exit 0
+fi
+
+kill -TERM "$PID" 2>/dev/null || true
+wait "$PID" 2>/dev/null || true
+fail_with_log "$LOG" "did not see expected line: feature flag evaluates to true"
diff --git a/snippets/validators/languages/lua-server/runner.yaml b/snippets/validators/languages/lua-server/runner.yaml
new file mode 100644
index 00000000..b10379b0
--- /dev/null
+++ b/snippets/validators/languages/lua-server/runner.yaml
@@ -0,0 +1,3 @@
+mode: docker
+runs-on: ubuntu-latest
+image-prefix: sdk-snippets/lua-server-validator
diff --git a/snippets/validators/languages/node/Dockerfile b/snippets/validators/languages/node/Dockerfile
new file mode 100644
index 00000000..26049285
--- /dev/null
+++ b/snippets/validators/languages/node/Dockerfile
@@ -0,0 +1,8 @@
+FROM node:20
+
+WORKDIR /work
+
+COPY shared /harness-shared
+COPY languages/node/harness /harness
+
+ENTRYPOINT ["/harness/run.sh"]
diff --git a/snippets/validators/languages/node/harness/run.sh b/snippets/validators/languages/node/harness/run.sh
new file mode 100755
index 00000000..bad2dc9a
--- /dev/null
+++ b/snippets/validators/languages/node/harness/run.sh
@@ -0,0 +1,46 @@
+#!/bin/sh
+# Runs the staged Node.js snippet against a real LaunchDarkly environment.
+# Inputs (env): LAUNCHDARKLY_SDK_KEY (or _CLIENT_SIDE_ID for client SDKs),
+#               LAUNCHDARKLY_FLAG_KEY, SNIPPET_ENTRYPOINT.
+#
+# The snippet's `validation.requirements` line(s) are passed in via a
+# stage-time requirements.txt file (the dispatcher writes it). For Node,
+# each line is treated as an `npm install <line>` argument.
+set -eu
+
+. /harness-shared/lib.sh
+require_env LAUNCHDARKLY_FLAG_KEY SNIPPET_ENTRYPOINT
+
+# Stage to a writable workdir; npm install writes node_modules.
+WORK=$(mktemp -d)
+trap 'rm -rf "$WORK"' EXIT
+cp -r /snippet/. "$WORK/"
+cd "$WORK"
+
+# Initialize package.json if absent (snippet's `mkdir + npm init` step
+# isn't reproduced verbatim — npm init is interactive).
+if [ ! -f package.json ]; then
+    npm init -y >/dev/null
+fi
+
+if [ -f requirements.txt ]; then
+    # Each non-empty line is an npm install target.
+    while IFS= read -r line; do
+        [ -z "$line" ] && continue
+        npm install --silent --no-audit --no-fund --no-progress "$line"
+    done < requirements.txt
+fi
+
+LOG=$(mktemp)
+
+CI=1 timeout --signal=TERM 60s node "$SNIPPET_ENTRYPOINT" >"$LOG" 2>&1 &
+PID=$!
+
+deadline=$(( $(date +%s) + 50 ))
+if await_success_line "$LOG" "$PID" "$deadline"; then
+    exit 0
+fi
+
+kill -TERM "$PID" 2>/dev/null || true
+wait "$PID" 2>/dev/null || true
+fail_with_log "$LOG" "did not see expected line: feature flag evaluates to true"
diff --git a/snippets/validators/languages/node/runner.yaml b/snippets/validators/languages/node/runner.yaml
new file mode 100644
index 00000000..e12f95d4
--- /dev/null
+++ b/snippets/validators/languages/node/runner.yaml
@@ -0,0 +1,3 @@
+mode: docker
+runs-on: ubuntu-latest
+image-prefix: sdk-snippets/node-validator
diff --git a/snippets/validators/languages/php/Dockerfile b/snippets/validators/languages/php/Dockerfile
new file mode 100644
index 00000000..ac42d4f5
--- /dev/null
+++ b/snippets/validators/languages/php/Dockerfile
@@ -0,0 +1,13 @@
+FROM php:8.3-cli
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    git unzip ca-certificates curl \
+ && rm -rf /var/lib/apt/lists/* \
+ && curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
+
+WORKDIR /work
+
+COPY shared /harness-shared
+COPY languages/php/harness /harness
+
+ENTRYPOINT ["/harness/run.sh"]
diff --git a/snippets/validators/languages/php/harness/run.sh b/snippets/validators/languages/php/harness/run.sh
new file mode 100755
index 00000000..6e56fdd4
--- /dev/null
+++ b/snippets/validators/languages/php/harness/run.sh
@@ -0,0 +1,41 @@
+#!/bin/sh
+# Runs the staged PHP snippet against a real LaunchDarkly environment.
+set -eu
+
+. /harness-shared/lib.sh
+require_env LAUNCHDARKLY_SDK_KEY LAUNCHDARKLY_FLAG_KEY SNIPPET_ENTRYPOINT
+
+WORK=$(mktemp -d)
+trap 'rm -rf "$WORK"' EXIT
+cp -r /snippet/. "$WORK/"
+cd "$WORK"
+
+# composer require <pkg>... per requirements line. The image bundles a
+# system-wide `composer` binary, so we use it directly rather than
+# bootstrapping composer.phar like the snippet does.
+if [ -f requirements.txt ]; then
+    pkgs=""
+    while IFS= read -r line; do
+        [ -z "$line" ] && continue
+        pkgs="$pkgs $line"
+    done < requirements.txt
+    if [ -n "$pkgs" ]; then
+        # shellcheck disable=SC2086
+        composer require --quiet --no-interaction --no-progress $pkgs
+    fi
+fi
+
+LOG=$(mktemp)
+
+# PHP snippet loops forever with sleep(1); time out and SIGTERM after match.
+timeout --signal=TERM 90s php -d output_buffering=Off "$SNIPPET_ENTRYPOINT" >"$LOG" 2>&1 &
+PID=$!
+
+deadline=$(( $(date +%s) + 80 ))
+if await_success_line "$LOG" "$PID" "$deadline"; then
+    exit 0
+fi
+
+kill -TERM "$PID" 2>/dev/null || true
+wait "$PID" 2>/dev/null || true
+fail_with_log "$LOG" "did not see expected line: feature flag evaluates to true"
diff --git a/snippets/validators/languages/php/runner.yaml b/snippets/validators/languages/php/runner.yaml
new file mode 100644
index 00000000..bce9adf7
--- /dev/null
+++ b/snippets/validators/languages/php/runner.yaml
@@ -0,0 +1,3 @@
+mode: docker
+runs-on: ubuntu-latest
+image-prefix: sdk-snippets/php-validator
diff --git a/snippets/validators/languages/react-client/Dockerfile b/snippets/validators/languages/react-client/Dockerfile
new file mode 100644
index 00000000..698d2a90
--- /dev/null
+++ b/snippets/validators/languages/react-client/Dockerfile
@@ -0,0 +1,91 @@
+FROM mcr.microsoft.com/playwright:v1.59.1-noble
+
+# Pre-bake a minimal Vite + React + TypeScript project with the LD React
+# SDK installed. Per-validate cycles drop the snippet's entrypoint
+# (src/index.tsx for legacy, src/main.tsx for createApp) plus its App.tsx
+# companion into src/ and re-run vite build.
+ARG LD_REACT_SDK_VERSION=3.9.0
+ARG REACT_VERSION=19.2.5
+ARG VITE_VERSION=8.0.10
+ARG VITE_PLUGIN_REACT_VERSION=6.0.1
+
+RUN mkdir -p /opt/hello-react/src
+WORKDIR /opt/hello-react
+
+RUN printf '{\n\
+  "name": "hello-react",\n\
+  "private": true,\n\
+  "version": "0.0.0",\n\
+  "type": "module",\n\
+  "scripts": {\n\
+    "build": "vite build",\n\
+    "preview": "vite preview --port=4173 --host"\n\
+  },\n\
+  "dependencies": {\n\
+    "launchdarkly-react-client-sdk": "%s",\n\
+    "react": "%s",\n\
+    "react-dom": "%s"\n\
+  },\n\
+  "devDependencies": {\n\
+    "@types/react": "19.2.5",\n\
+    "@types/react-dom": "19.2.3",\n\
+    "@vitejs/plugin-react": "%s",\n\
+    "typescript": "5.6.3",\n\
+    "vite": "%s"\n\
+  }\n\
+}\n' \
+    "${LD_REACT_SDK_VERSION}" "${REACT_VERSION}" "${REACT_VERSION}" \
+    "${VITE_PLUGIN_REACT_VERSION}" "${VITE_VERSION}" > package.json
+
+RUN printf "import { defineConfig } from 'vite'\n\
+import react from '@vitejs/plugin-react'\n\
+\n\
+export default defineConfig({\n\
+  plugins: [react()],\n\
+})\n" > vite.config.js
+
+RUN printf '{\n\
+  "compilerOptions": {\n\
+    "target": "ES2020",\n\
+    "lib": ["ES2020", "DOM", "DOM.Iterable"],\n\
+    "module": "ESNext",\n\
+    "moduleResolution": "bundler",\n\
+    "jsx": "react-jsx",\n\
+    "strict": false,\n\
+    "isolatedModules": true,\n\
+    "noEmit": true,\n\
+    "skipLibCheck": true\n\
+  },\n\
+  "include": ["src"]\n\
+}\n' > tsconfig.json
+
+# Empty stylesheet — both legacy and createApp variants reference one.
+RUN touch src/index.css src/App.css
+
+# Placeholder entrypoint + App. Replaced per-validate. The harness rewrites
+# index.html to point at whichever entrypoint the snippet declared.
+RUN printf "import { createRoot } from 'react-dom/client';\nimport App from './App';\ncreateRoot(document.getElementById('root')).render(<App />);\n" > src/main.tsx
+RUN printf "export default function App() { return <div>placeholder</div>; }\n" > src/App.tsx
+
+RUN printf '<!doctype html>\n\
+<html lang="en">\n\
+  <head><meta charset="UTF-8" /><title>hello-react</title></head>\n\
+  <body>\n\
+    <div id="root"></div>\n\
+    <script type="module" src="/src/main.tsx"></script>\n\
+  </body>\n\
+</html>\n' > index.html
+
+RUN npm install --no-audit --no-fund --no-progress
+
+# Pre-warm the build to seed Vite's transform cache + esbuild prebundle.
+RUN npm run build
+
+WORKDIR /work
+
+COPY shared /harness-shared
+COPY languages/react-client/harness /harness
+
+RUN cd /harness && npm install --silent --no-audit --no-fund --no-progress playwright@1.59.1
+
+ENTRYPOINT ["/harness/run.sh"]
diff --git a/snippets/validators/languages/react-client/harness/check.js b/snippets/validators/languages/react-client/harness/check.js
new file mode 100644
index 00000000..e1acf348
--- /dev/null
+++ b/snippets/validators/languages/react-client/harness/check.js
@@ -0,0 +1,46 @@
+// Loads the locally-served React app in headless Chromium, polls the
+// page text for the EXAM-HELLO success line, and exits 0 when matched.
+const { chromium } = require('/harness/node_modules/playwright');
+
+(async () => {
+  const url = process.env.REACT_PREVIEW_URL || 'http://localhost:4173';
+  const successRe = /feature flag evaluates to true/i;
+
+  const browser = await chromium.launch();
+  const context = await browser.newContext();
+  const page = await context.newPage();
+
+  page.on('console', msg => console.log('[browser]', msg.text()));
+  page.on('pageerror', err => console.log('[browser:error]', err.message));
+
+  for (let i = 0; i < 25; i++) {
+    try {
+      await page.goto(url);
+      break;
+    } catch {
+      await new Promise(r => setTimeout(r, 200));
+    }
+  }
+
+  const deadline = Date.now() + 30_000;
+  while (Date.now() < deadline) {
+    const text = (await page.textContent('body')) || '';
+    if (successRe.test(text)) {
+      console.log(text.trim());
+      console.log('validator: ok');
+      await browser.close();
+      process.exit(0);
+    }
+    await page.waitForTimeout(500);
+  }
+
+  const finalText = (await page.textContent('body')) || '';
+  console.error('validator: did not see expected line: feature flag evaluates to true');
+  console.error('--- final body text ---');
+  console.error(finalText.trim());
+  await browser.close();
+  process.exit(1);
+})().catch((err) => {
+  console.error('validator: harness error:', err.message);
+  process.exit(1);
+});
diff --git a/snippets/validators/languages/react-client/harness/run.sh b/snippets/validators/languages/react-client/harness/run.sh
new file mode 100755
index 00000000..99b6544a
--- /dev/null
+++ b/snippets/validators/languages/react-client/harness/run.sh
@@ -0,0 +1,64 @@
+#!/bin/sh
+# Builds the staged React snippet against the pre-baked Vite project,
+# starts a preview server, and runs the Playwright DOM check against it.
+#
+# Two snippet variants flow through this same harness: the legacy CRA
+# pattern uses src/index.tsx, while the createApp/Vite pattern uses
+# src/main.tsx. We rewrite index.html to point at whichever entrypoint
+# the snippet declared.
+set -eu
+
+. /harness-shared/lib.sh
+require_env LAUNCHDARKLY_CLIENT_SIDE_ID LAUNCHDARKLY_FLAG_KEY SNIPPET_ENTRYPOINT
+
+# Stage the snippet body (App.tsx) plus its companion (index.tsx or
+# main.tsx) into the pre-baked React project.
+cp "/snippet/$SNIPPET_ENTRYPOINT" "/opt/hello-react/$SNIPPET_ENTRYPOINT"
+for f in /snippet/src/*.tsx; do
+    [ -f "$f" ] || continue
+    bn=$(basename "$f")
+    cp "$f" "/opt/hello-react/src/$bn"
+done
+
+# Point index.html at whichever entrypoint the snippet uses (index.tsx
+# for legacy, main.tsx for createApp).
+ENTRY_BASENAME=$(basename "$SNIPPET_ENTRYPOINT")
+ENTRY_FILE="src/$(basename "$SNIPPET_ENTRYPOINT" .tsx).tsx"
+# Companion may also be the entrypoint script. Pick whichever isn't App.tsx.
+SCRIPT_SRC=""
+for f in /opt/hello-react/src/*.tsx; do
+    bn=$(basename "$f")
+    case "$bn" in
+        App.tsx) ;;
+        *) SCRIPT_SRC="/src/$bn"; break ;;
+    esac
+done
+if [ -z "$SCRIPT_SRC" ]; then
+    echo "harness: could not find non-App entrypoint in /opt/hello-react/src" >&2
+    exit 1
+fi
+
+cd /opt/hello-react
+sed -i "s|/src/main.tsx|$SCRIPT_SRC|" index.html
+
+npm run build >/tmp/build.log 2>&1 \
+    || { cat /tmp/build.log >&2; exit 1; }
+
+PREVIEW_LOG=$(mktemp)
+npm run preview >"$PREVIEW_LOG" 2>&1 &
+PREVIEW_PID=$!
+
+for _ in $(seq 1 20); do
+    if grep -q 'Local:' "$PREVIEW_LOG" 2>/dev/null; then
+        break
+    fi
+    sleep 0.2
+done
+
+cleanup() {
+    kill -TERM "$PREVIEW_PID" 2>/dev/null || true
+    wait "$PREVIEW_PID" 2>/dev/null || true
+}
+trap cleanup EXIT
+
+REACT_PREVIEW_URL=http://localhost:4173 exec node /harness/check.js
diff --git a/snippets/validators/languages/react-client/runner.yaml b/snippets/validators/languages/react-client/runner.yaml
new file mode 100644
index 00000000..a910da4c
--- /dev/null
+++ b/snippets/validators/languages/react-client/runner.yaml
@@ -0,0 +1,3 @@
+mode: docker
+runs-on: ubuntu-latest
+image-prefix: sdk-snippets/react-client-validator
diff --git a/snippets/validators/languages/react-native-client/Dockerfile b/snippets/validators/languages/react-native-client/Dockerfile
new file mode 100644
index 00000000..29cf5a92
--- /dev/null
+++ b/snippets/validators/languages/react-native-client/Dockerfile
@@ -0,0 +1,119 @@
+FROM node:22-bookworm
+
+# React Native's jest setup pulls in a long tail of transitive deps;
+# pre-bake them so per-validate cycles only re-run jest with the
+# snippet's two .tsx files.
+
+ARG LD_RN_SDK_VERSION=10.17.2
+ARG REACT_NATIVE_VERSION=0.85.2
+ARG REACT_VERSION=19.2.5
+ARG TESTING_LIBRARY_VERSION=13.3.3
+
+WORKDIR /opt/hello-react-native
+
+# Minimal package.json — just enough for jest + RN testing-library to
+# resolve the snippet's imports. Native code paths are mocked out by
+# react-native's jest preset; the SDK's streaming layer talks to LD
+# through the same JS code path it would use on a real device.
+RUN cat > package.json <<EOF
+{
+  "name": "hello-react-native",
+  "version": "0.0.1",
+  "private": true,
+  "scripts": {
+    "test": "jest --colors=false"
+  },
+  "dependencies": {
+    "@launchdarkly/react-native-client-sdk": "${LD_RN_SDK_VERSION}",
+    "@react-native-async-storage/async-storage": "^1.23.1",
+    "react": "${REACT_VERSION}",
+    "react-native": "${REACT_NATIVE_VERSION}"
+  },
+  "devDependencies": {
+    "@babel/core": "^7.25.2",
+    "@babel/preset-env": "^7.25.3",
+    "@react-native/babel-preset": "${REACT_NATIVE_VERSION}",
+    "@react-native/jest-preset": "${REACT_NATIVE_VERSION}",
+    "@testing-library/react-native": "${TESTING_LIBRARY_VERSION}",
+    "@types/react": "${REACT_VERSION}",
+    "@types/react-test-renderer": "19.1.0",
+    "jest": "^29.7.0",
+    "react-test-renderer": "${REACT_VERSION}",
+    "ts-jest": "^29.2.5",
+    "typescript": "^5.6.0"
+  },
+  "jest": {
+    "preset": "@react-native/jest-preset",
+    "transformIgnorePatterns": [
+      "node_modules/(?!(react-native|@react-native|@launchdarkly)/)"
+    ],
+    "moduleFileExtensions": ["ts", "tsx", "js", "jsx", "json"],
+    "testMatch": ["<rootDir>/__tests__/**/*.test.tsx"],
+    "setupFiles": ["<rootDir>/jest.setup.js"]
+  }
+}
+EOF
+
+RUN cat > babel.config.js <<'EOF'
+module.exports = {
+  presets: ['@react-native/babel-preset'],
+};
+EOF
+
+# jest setup: react-native's preset leaves AppState.currentState as
+# undefined, which the LD SDK's RNStateDetector translates to
+# `Background`. With automaticBackgroundHandling=true (the default) and
+# runInBackground=false (the default) the SDK then immediately enters
+# offline mode, so the streaming connection never opens. Pin
+# currentState to 'active' so the SDK treats us as foregrounded.
+RUN cat > jest.setup.js <<'EOF'
+const RN = require('react-native');
+if (RN.AppState) {
+  RN.AppState.currentState = 'active';
+}
+EOF
+
+RUN cat > tsconfig.json <<'EOF'
+{
+  "compilerOptions": {
+    "target": "ES2020",
+    "module": "ESNext",
+    "moduleResolution": "node",
+    "jsx": "react-native",
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "strict": false
+  }
+}
+EOF
+
+# Placeholder snippet files — replaced per-validate.
+RUN mkdir -p src __tests__ \
+    && cat > App.tsx <<'EOF'
+import React from 'react';
+import {Text, View} from 'react-native';
+const App = () => <View><Text>placeholder</Text></View>;
+export default App;
+EOF
+
+RUN cat > src/welcome.tsx <<'EOF'
+import React from 'react';
+import {Text, View} from 'react-native';
+export default function Welcome() {
+  return <View><Text>placeholder</Text></View>;
+}
+EOF
+
+WORKDIR /opt/hello-react-native
+
+RUN npm install --no-audit --no-fund --no-progress
+
+# Drop a jest test that renders App and waits for the canonical line.
+COPY languages/react-native-client/test/App.test.tsx __tests__/App.test.tsx
+
+WORKDIR /work
+
+COPY shared /harness-shared
+COPY languages/react-native-client/harness /harness
+
+ENTRYPOINT ["/harness/run.sh"]
diff --git a/snippets/validators/languages/react-native-client/harness/run.sh b/snippets/validators/languages/react-native-client/harness/run.sh
new file mode 100755
index 00000000..2998c3dc
--- /dev/null
+++ b/snippets/validators/languages/react-native-client/harness/run.sh
@@ -0,0 +1,31 @@
+#!/bin/sh
+# Validates the React Native snippet under jest with the react-native
+# preset (no emulator/simulator). The Dockerfile pre-installed the
+# bundled deps; per-validate just swaps the snippet's two .tsx files
+# in and re-runs jest.
+set -eu
+
+. /harness-shared/lib.sh
+require_env LAUNCHDARKLY_MOBILE_KEY LAUNCHDARKLY_FLAG_KEY SNIPPET_ENTRYPOINT
+
+PROJECT=/opt/hello-react-native
+
+# Stage App.tsx (root) + src/welcome.tsx (companion). Both are .tsx
+# files at known paths under the snippet stage dir.
+cp "/snippet/App.tsx" "${PROJECT}/App.tsx"
+cp "/snippet/src/welcome.tsx" "${PROJECT}/src/welcome.tsx"
+
+cd "${PROJECT}"
+
+LOG=$(mktemp)
+timeout --signal=TERM 180s npm test --silent >"$LOG" 2>&1 &
+PID=$!
+
+deadline=$(( $(date +%s) + 170 ))
+if await_success_line "$LOG" "$PID" "$deadline"; then
+    exit 0
+fi
+
+kill -TERM "$PID" 2>/dev/null || true
+wait "$PID" 2>/dev/null || true
+fail_with_log "$LOG" "did not see expected line: feature flag evaluates to true"
diff --git a/snippets/validators/languages/react-native-client/runner.yaml b/snippets/validators/languages/react-native-client/runner.yaml
new file mode 100644
index 00000000..ab46d7a2
--- /dev/null
+++ b/snippets/validators/languages/react-native-client/runner.yaml
@@ -0,0 +1,3 @@
+mode: docker
+runs-on: ubuntu-latest
+image-prefix: sdk-snippets/react-native-client-validator
diff --git a/snippets/validators/languages/react-native-client/test/App.test.tsx b/snippets/validators/languages/react-native-client/test/App.test.tsx
new file mode 100644
index 00000000..2e685bfa
--- /dev/null
+++ b/snippets/validators/languages/react-native-client/test/App.test.tsx
@@ -0,0 +1,52 @@
+// Jest test that drives the snippet's App.tsx + src/welcome.tsx end to
+// end. Renders the React tree, waits up to 30s for the SDK to deliver
+// the flag, then asserts that the rendered text contains the canonical
+// EXAM-HELLO line.
+//
+// The SDK's default streaming transport uses XMLHttpRequest under the
+// hood (RNEventSource), which doesn't exist in Node. Force polling
+// mode (which uses fetch — built into Node 18+) so the test can talk
+// to LaunchDarkly's polling endpoint and resolve the flag.
+import React from 'react';
+import {render, waitFor, screen} from '@testing-library/react-native';
+
+jest.mock('@launchdarkly/react-native-client-sdk', () => {
+  const actual = jest.requireActual('@launchdarkly/react-native-client-sdk');
+  class PollingLDClient extends actual.ReactNativeLDClient {
+    constructor(key: string, autoEnv: any, options: any = {}) {
+      super(key, autoEnv, {...options, initialConnectionMode: 'polling'});
+    }
+  }
+  return {...actual, ReactNativeLDClient: PollingLDClient};
+});
+
+// eslint-disable-next-line import/first
+import App from '../App';
+
+jest.setTimeout(60_000);
+
+// Walks the rendered tree and concatenates every Text child into a
+// single flat string. Needed because react-native's render output is a
+// nested object — a regex looking for "feature flag evaluates to true"
+// only matches when the words are adjacent.
+function flattenText(node: any): string {
+  if (node == null) return '';
+  if (typeof node === 'string') return node;
+  if (Array.isArray(node)) return node.map(flattenText).join('');
+  if (typeof node === 'object' && node.children) return flattenText(node.children);
+  return '';
+}
+
+test('flag evaluates to true', async () => {
+  render(<App />);
+  await waitFor(
+    () => {
+      const text = flattenText(screen.toJSON());
+      expect(text).toMatch(/feature flag evaluates to true/i);
+    },
+    {timeout: 30_000, interval: 500},
+  );
+  // Print the flat text so the validator harness's grep on
+  // "feature flag evaluates to [Tt]rue" matches.
+  console.log(flattenText(screen.toJSON()));
+});
diff --git a/snippets/validators/languages/ruby/Dockerfile b/snippets/validators/languages/ruby/Dockerfile
new file mode 100644
index 00000000..24e55d2d
--- /dev/null
+++ b/snippets/validators/languages/ruby/Dockerfile
@@ -0,0 +1,8 @@
+FROM ruby:3.3
+
+WORKDIR /work
+
+COPY shared /harness-shared
+COPY languages/ruby/harness /harness
+
+ENTRYPOINT ["/harness/run.sh"]
diff --git a/snippets/validators/languages/ruby/harness/run.sh b/snippets/validators/languages/ruby/harness/run.sh
new file mode 100755
index 00000000..d110ed24
--- /dev/null
+++ b/snippets/validators/languages/ruby/harness/run.sh
@@ -0,0 +1,46 @@
+#!/bin/sh
+# Runs the staged Ruby snippet against a real LaunchDarkly environment.
+set -eu
+
+. /harness-shared/lib.sh
+require_env LAUNCHDARKLY_SDK_KEY LAUNCHDARKLY_FLAG_KEY SNIPPET_ENTRYPOINT
+
+WORK=$(mktemp -d)
+trap 'rm -rf "$WORK"' EXIT
+cp -r /snippet/. "$WORK/"
+cd "$WORK"
+
+# Generate a Gemfile from validation.requirements (newline-separated gem names).
+if [ -f requirements.txt ] && [ ! -f Gemfile ]; then
+    {
+        echo "source 'https://rubygems.org'"
+        while IFS= read -r line; do
+            [ -z "$line" ] && continue
+            echo "gem '$line'"
+        done < requirements.txt
+    } > Gemfile
+fi
+
+if [ -f Gemfile ]; then
+    bundle install --quiet
+fi
+
+LOG=$(mktemp)
+
+# Ruby snippet blocks on Thread sleep; we time it out and SIGTERM after match.
+# Force line-buffered stdout — Ruby block-buffers when stdout isn't a tty,
+# which would hide the success line until the deadline fires. stdbuf only
+# affects libc-level buffering and doesn't help with Ruby's own IO layer,
+# so we wrap the snippet in a one-liner that sets $stdout.sync = true
+# before loading it. This keeps the snippet itself unmodified.
+timeout --signal=TERM 90s ruby -e '$stdout.sync = true; load ENV["SNIPPET_ENTRYPOINT"]' >"$LOG" 2>&1 &
+PID=$!
+
+deadline=$(( $(date +%s) + 80 ))
+if await_success_line "$LOG" "$PID" "$deadline"; then
+    exit 0
+fi
+
+kill -TERM "$PID" 2>/dev/null || true
+wait "$PID" 2>/dev/null || true
+fail_with_log "$LOG" "did not see expected line: feature flag evaluates to true"
diff --git a/snippets/validators/languages/ruby/runner.yaml b/snippets/validators/languages/ruby/runner.yaml
new file mode 100644
index 00000000..1a285ce6
--- /dev/null
+++ b/snippets/validators/languages/ruby/runner.yaml
@@ -0,0 +1,3 @@
+mode: docker
+runs-on: ubuntu-latest
+image-prefix: sdk-snippets/ruby-validator
diff --git a/snippets/validators/languages/rust/Dockerfile b/snippets/validators/languages/rust/Dockerfile
new file mode 100644
index 00000000..9da7958a
--- /dev/null
+++ b/snippets/validators/languages/rust/Dockerfile
@@ -0,0 +1,8 @@
+FROM rust:1.85
+
+WORKDIR /work
+
+COPY shared /harness-shared
+COPY languages/rust/harness /harness
+
+ENTRYPOINT ["/harness/run.sh"]
diff --git a/snippets/validators/languages/rust/harness/run.sh b/snippets/validators/languages/rust/harness/run.sh
new file mode 100755
index 00000000..3c882499
--- /dev/null
+++ b/snippets/validators/languages/rust/harness/run.sh
@@ -0,0 +1,37 @@
+#!/bin/sh
+# Runs the staged Rust snippet against a real LaunchDarkly environment.
+# The harness reproduces gonfalon's `cargo new` + `cargo add` flow:
+# bootstrap a Cargo project, drop the snippet's src/main.rs over the
+# default template, add the SDK + tokio dependencies, and run it.
+set -eu
+
+. /harness-shared/lib.sh
+require_env LAUNCHDARKLY_SDK_KEY LAUNCHDARKLY_FLAG_KEY SNIPPET_ENTRYPOINT
+
+WORK=$(mktemp -d)
+trap 'rm -rf "$WORK"' EXIT
+cd "$WORK"
+
+cargo new --quiet --bin hello-rust
+cd hello-rust
+
+# Replace the default src/main.rs with the snippet body. The snippet's
+# `file:` is `src/main.rs`, so /snippet/src/main.rs holds it.
+cp "/snippet/$SNIPPET_ENTRYPOINT" "$SNIPPET_ENTRYPOINT"
+
+cargo add --quiet launchdarkly-server-sdk
+cargo add --quiet tokio@1 -F rt,macros
+
+LOG=$(mktemp)
+
+timeout --signal=TERM 300s cargo run --quiet >"$LOG" 2>&1 &
+PID=$!
+
+deadline=$(( $(date +%s) + 290 ))
+if await_success_line "$LOG" "$PID" "$deadline"; then
+    exit 0
+fi
+
+kill -TERM "$PID" 2>/dev/null || true
+wait "$PID" 2>/dev/null || true
+fail_with_log "$LOG" "did not see expected line: feature flag evaluates to true"
diff --git a/snippets/validators/languages/rust/runner.yaml b/snippets/validators/languages/rust/runner.yaml
new file mode 100644
index 00000000..3eef4759
--- /dev/null
+++ b/snippets/validators/languages/rust/runner.yaml
@@ -0,0 +1,3 @@
+mode: docker
+runs-on: ubuntu-latest
+image-prefix: sdk-snippets/rust-validator
diff --git a/snippets/validators/languages/vue-client/Dockerfile b/snippets/validators/languages/vue-client/Dockerfile
new file mode 100644
index 00000000..015b7e5a
--- /dev/null
+++ b/snippets/validators/languages/vue-client/Dockerfile
@@ -0,0 +1,66 @@
+FROM mcr.microsoft.com/playwright:v1.59.1-noble
+
+# Pre-bake a minimal Vue 3 + Vite project with the LD Vue SDK and a stable
+# index.html. Per-validate cycles drop the snippet's main.js + App.vue
+# into src/ and re-run vite build; the SDK + Vue + Vite are already cached.
+ARG LD_VUE_SDK_VERSION=2.5.0
+ARG VUE_VERSION=3.5.33
+ARG VITE_VERSION=8.0.10
+ARG VITE_PLUGIN_VUE_VERSION=6.0.6
+
+RUN mkdir -p /opt/hello-vue/src
+WORKDIR /opt/hello-vue
+
+RUN printf '{\n\
+  "name": "hello-vue",\n\
+  "private": true,\n\
+  "version": "0.0.0",\n\
+  "type": "module",\n\
+  "scripts": {\n\
+    "dev": "vite",\n\
+    "build": "vite build",\n\
+    "preview": "vite preview --port=4173 --host"\n\
+  },\n\
+  "dependencies": {\n\
+    "launchdarkly-vue-client-sdk": "%s",\n\
+    "vue": "%s"\n\
+  },\n\
+  "devDependencies": {\n\
+    "@vitejs/plugin-vue": "%s",\n\
+    "vite": "%s"\n\
+  }\n\
+}\n' "${LD_VUE_SDK_VERSION}" "${VUE_VERSION}" "${VITE_PLUGIN_VUE_VERSION}" "${VITE_VERSION}" > package.json
+
+RUN printf "import { defineConfig } from 'vite'\n\
+import vue from '@vitejs/plugin-vue'\n\
+\n\
+export default defineConfig({\n\
+  plugins: [vue()],\n\
+})\n" > vite.config.js
+
+RUN printf '<!doctype html>\n\
+<html lang="en">\n\
+  <head><meta charset="UTF-8" /><title>hello-vue</title></head>\n\
+  <body>\n\
+    <div id="app"></div>\n\
+    <script type="module" src="/src/main.js"></script>\n\
+  </body>\n\
+</html>\n' > index.html
+
+# Placeholder src files. Replaced per-validate.
+RUN printf "import { createApp } from 'vue'\nimport App from './App.vue'\ncreateApp(App).mount('#app')\n" > src/main.js
+RUN printf "<template><div>placeholder</div></template>\n" > src/App.vue
+
+RUN npm install --no-audit --no-fund --no-progress
+
+# Pre-warm the build to seed Vite's transform cache.
+RUN npm run build
+
+WORKDIR /work
+
+COPY shared /harness-shared
+COPY languages/vue-client/harness /harness
+
+RUN cd /harness && npm install --silent --no-audit --no-fund --no-progress playwright@1.59.1
+
+ENTRYPOINT ["/harness/run.sh"]
diff --git a/snippets/validators/languages/vue-client/harness/check.js b/snippets/validators/languages/vue-client/harness/check.js
new file mode 100644
index 00000000..8d137e5d
--- /dev/null
+++ b/snippets/validators/languages/vue-client/harness/check.js
@@ -0,0 +1,47 @@
+// Loads the locally-served Vue app in headless Chromium, polls the page
+// text for the EXAM-HELLO success line, and exits 0 when matched.
+const { chromium } = require('/harness/node_modules/playwright');
+
+(async () => {
+  const url = process.env.VUE_PREVIEW_URL || 'http://localhost:4173';
+  const successRe = /feature flag evaluates to true/i;
+
+  const browser = await chromium.launch();
+  const context = await browser.newContext();
+  const page = await context.newPage();
+
+  page.on('console', msg => console.log('[browser]', msg.text()));
+  page.on('pageerror', err => console.log('[browser:error]', err.message));
+
+  // Vite preview may take ~250ms to be ready after spawn. Tolerate ECONNREFUSED.
+  for (let i = 0; i < 25; i++) {
+    try {
+      await page.goto(url);
+      break;
+    } catch {
+      await new Promise(r => setTimeout(r, 200));
+    }
+  }
+
+  const deadline = Date.now() + 30_000;
+  while (Date.now() < deadline) {
+    const text = (await page.textContent('body')) || '';
+    if (successRe.test(text)) {
+      console.log(text.trim());
+      console.log('validator: ok');
+      await browser.close();
+      process.exit(0);
+    }
+    await page.waitForTimeout(500);
+  }
+
+  const finalText = (await page.textContent('body')) || '';
+  console.error('validator: did not see expected line: feature flag evaluates to true');
+  console.error('--- final body text ---');
+  console.error(finalText.trim());
+  await browser.close();
+  process.exit(1);
+})().catch((err) => {
+  console.error('validator: harness error:', err.message);
+  process.exit(1);
+});
diff --git a/snippets/validators/languages/vue-client/harness/run.sh b/snippets/validators/languages/vue-client/harness/run.sh
new file mode 100755
index 00000000..12698ab0
--- /dev/null
+++ b/snippets/validators/languages/vue-client/harness/run.sh
@@ -0,0 +1,39 @@
+#!/bin/sh
+# Builds the staged Vue snippet against the pre-baked Vite project,
+# starts a preview server, and runs the Playwright DOM check against it.
+set -eu
+
+. /harness-shared/lib.sh
+require_env LAUNCHDARKLY_CLIENT_SIDE_ID LAUNCHDARKLY_FLAG_KEY SNIPPET_ENTRYPOINT
+
+# Stage the snippet body + its companion (main.js) into the pre-baked
+# Vue project. The snippet's `file:` paths are project-relative
+# (src/App.vue, src/main.js).
+cp "/snippet/src/main.js" /opt/hello-vue/src/main.js
+cp "/snippet/$SNIPPET_ENTRYPOINT" "/opt/hello-vue/$SNIPPET_ENTRYPOINT"
+
+cd /opt/hello-vue
+npm run build >/tmp/build.log 2>&1 \
+    || { cat /tmp/build.log >&2; exit 1; }
+
+# Start vite preview in the background and let Playwright probe it.
+PREVIEW_LOG=$(mktemp)
+npm run preview >"$PREVIEW_LOG" 2>&1 &
+PREVIEW_PID=$!
+
+# Wait briefly for the server to come up. vite preview prints a "Local:"
+# line within ~1s on this image.
+for _ in $(seq 1 20); do
+    if grep -q 'Local:' "$PREVIEW_LOG" 2>/dev/null; then
+        break
+    fi
+    sleep 0.2
+done
+
+cleanup() {
+    kill -TERM "$PREVIEW_PID" 2>/dev/null || true
+    wait "$PREVIEW_PID" 2>/dev/null || true
+}
+trap cleanup EXIT
+
+VUE_PREVIEW_URL=http://localhost:4173 exec node /harness/check.js
diff --git a/snippets/validators/languages/vue-client/runner.yaml b/snippets/validators/languages/vue-client/runner.yaml
new file mode 100644
index 00000000..c6f452b3
--- /dev/null
+++ b/snippets/validators/languages/vue-client/runner.yaml
@@ -0,0 +1,3 @@
+mode: docker
+runs-on: ubuntu-latest
+image-prefix: sdk-snippets/vue-client-validator