diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9eea170..02a4290 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,4 +25,9 @@ jobs:
         uses: ./
         with:
           build-url: "https://github.com/empirical-run/dispatch-action"
+          auth-key: "1234567890"
           environment: production
+          runtime-config: |
+            foo: bar
+            baz: qux
+            eventName: ${{ github.event_name }}
diff --git a/action.yml b/action.yml
index 873a567..51d31f4 100644
--- a/action.yml
+++ b/action.yml
@@ -2,7 +2,6 @@ name: "Run Empirical tests"
 description: "This action dispatches a request to run tests"
 author: "empirical.run"
 
-# Add your action's branding here. This will appear on the GitHub Marketplace.
 branding:
   icon: "send"
   color: "gray-dark"
@@ -10,14 +9,17 @@ branding:
 # Define your inputs here.
 inputs:
   auth-key:
-    description: "Auth key for the application"
-    required: false
-  build-url:
-    description: "URL to the application to be tested"
+    description: "API key for Empirical"
     required: true
   environment:
     description: "Environment to run the tests on"
     required: true
+  build-url:
+    description: "URL to the application to be tested"
+    required: true
+  runtime-config:
+    description: "Runtime config for the tests"
+    required: false
 
 runs:
   using: node20
diff --git a/dist/index.js b/dist/index.js
index f47a34b..85902a6 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -29361,6 +29361,30 @@ async function getActor() {
     // https://github.com/actions/toolkit/issues/1143#issuecomment-2193348740
     return process.env.GITHUB_TRIGGERING_ACTOR || github.context.actor;
 }
+function parseRuntimeConfig(runtimeConfig) {
+    return runtimeConfig.reduce((acc, line) => {
+        if (!line.trim()) {
+            return acc;
+        }
+        if (!line.includes(':')) {
+            throw new Error(`Invalid runtime config format. Each line must contain a key-value pair separated by colon. Invalid line: "${line}"`);
+        }
+        const [key, value] = line.split(':');
+        const trimmedKey = key.trim();
+        const trimmedValue = value.trim();
+        if (!trimmedKey) {
+            throw new Error(`Invalid runtime config: key cannot be empty in line "${line}"`);
+        }
+        if (!trimmedValue) {
+            throw new Error(`Invalid runtime config: value cannot be empty for key "${trimmedKey}"`);
+        }
+        if (acc[trimmedKey]) {
+            throw new Error(`Invalid runtime config: duplicate key "${trimmedKey}" found`);
+        }
+        acc[trimmedKey] = trimmedValue;
+        return acc;
+    }, {});
+}
 async function run() {
     try {
         const buildUrl = core.getInput('build-url');
@@ -29370,10 +29394,7 @@ async function run() {
         else if (!isValidUrl(buildUrl)) {
             core.setFailed(`Invalid config: build-url must be a valid URL.`);
         }
-        const slackWebhookUrl = core.getInput('slack-webhook-url');
-        if (slackWebhookUrl) {
-            console.log(`Warning: slack-webhook-url is not a supported input, and will be ignored.`);
-        }
+        // TOOD: Remove platform and only keep environment
         const platform = core.getInput('platform');
         if (platform) {
             console.warn(`Warning: platform is a deprecated input, you should use environment instead.`);
@@ -29383,13 +29404,20 @@ async function run() {
             core.setFailed(`Missing config parameter: either of "environment" or "platform" (deprecated) needs to passed`);
         }
         const authKey = core.getInput('auth-key');
+        if (!authKey) {
+            core.setFailed(`Missing config parameter: auth-key`);
+        }
         const headers = {
             'Content-Type': 'application/json'
         };
         if (authKey) {
-            console.log(`Setting an auth header for the request.`);
             headers['Authorization'] = `Bearer ${authKey}`;
         }
+        const runtimeConfig = core.getMultilineInput('runtime-config');
+        if (runtimeConfig) {
+            const config = parseRuntimeConfig(runtimeConfig);
+            console.log(`Runtime config: ${JSON.stringify(config)}`);
+        }
         const branch = await getBranchName();
         console.log(`Branch name: ${branch}`);
         const response = await fetch("https://dispatch.empirical.run/v1/trigger", {
@@ -29407,7 +29435,7 @@ async function run() {
                     commit_url: getCommitUrl(),
                 },
                 platform,
-                environment,
+                environment: environment.toLowerCase(),
                 github_actor: await getActor(),
             })
         });
diff --git a/src/main.ts b/src/main.ts
index d5d5a77..121b8f1 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -150,6 +150,31 @@ async function getActor(): Promise<string> {
   return process.env.GITHUB_TRIGGERING_ACTOR || github.context.actor;
 }
 
+function parseRuntimeConfig(runtimeConfig: string[]): Record<string, string> {
+  return runtimeConfig.reduce((acc: Record<string, string>, line: string) => {
+    if (!line.trim()) {
+      return acc;
+    }
+    if (!line.includes(':')) {
+      throw new Error(`Invalid runtime config format. Each line must contain a key-value pair separated by colon. Invalid line: "${line}"`);
+    }
+    const [key, value] = line.split(':');
+    const trimmedKey = key.trim();
+    const trimmedValue = value.trim();
+    if (!trimmedKey) {
+      throw new Error(`Invalid runtime config: key cannot be empty in line "${line}"`);
+    }
+    if (!trimmedValue) {
+      throw new Error(`Invalid runtime config: value cannot be empty for key "${trimmedKey}"`);
+    }
+    if (acc[trimmedKey]) {
+      throw new Error(`Invalid runtime config: duplicate key "${trimmedKey}" found`);
+    }
+    acc[trimmedKey] = trimmedValue;
+    return acc;
+  }, {});
+}
+
 export async function run(): Promise<void> {
   try {
     const buildUrl: string = core.getInput('build-url');
@@ -158,29 +183,34 @@ export async function run(): Promise<void> {
     } else if (!isValidUrl(buildUrl)) {
       core.setFailed(`Invalid config: build-url must be a valid URL.`)
     }
-    const slackWebhookUrl: string = core.getInput('slack-webhook-url');
-    if (slackWebhookUrl) {
-      console.log(`Warning: slack-webhook-url is not a supported input, and will be ignored.`)
-    }
+
+    // TOOD: Remove platform and only keep environment
     const platform: string = core.getInput('platform');
     if (platform) {
       console.warn(`Warning: platform is a deprecated input, you should use environment instead.`)
     }
-
     const environment = core.getInput('environment');
     if (!platform && !environment) {
       core.setFailed(`Missing config parameter: either of "environment" or "platform" (deprecated) needs to passed`)
     }
 
     const authKey = core.getInput('auth-key');
+    if (!authKey) {
+      core.setFailed(`Missing config parameter: auth-key`)
+    }
     const headers: Record<string, string> = {
       'Content-Type': 'application/json'
     };
     if (authKey) {
-      console.log(`Setting an auth header for the request.`);
       headers['Authorization'] = `Bearer ${authKey}`;
     }
 
+    const runtimeConfig = core.getMultilineInput('runtime-config');
+    if (runtimeConfig) {
+      const config = parseRuntimeConfig(runtimeConfig);
+      console.log(`Runtime config: ${JSON.stringify(config)}`);
+    }
+
     const branch = await getBranchName();
     console.log(`Branch name: ${branch}`);
     const response = await fetch("https://dispatch.empirical.run/v1/trigger", {
@@ -198,7 +228,7 @@ export async function run(): Promise<void> {
           commit_url: getCommitUrl(),
         },
         platform,
-        environment,
+        environment: environment.toLowerCase(),
         github_actor: await getActor(),
       })
     });