diff --git a/.github/workflows/json-validate.yml b/.github/workflows/json-schema-tests.yml
similarity index 54%
rename from .github/workflows/json-validate.yml
rename to .github/workflows/json-schema-tests.yml
index f8acd11..6d65910 100644
--- a/.github/workflows/json-validate.yml
+++ b/.github/workflows/json-schema-tests.yml
@@ -1,4 +1,4 @@
-name: json-validate 
+name: json-schema-tests
 on:
     pull_request:
         types: [opened, synchronize]
@@ -11,7 +11,7 @@ permissions:
   pull-requests: write # enable write permissions for pull request comments
 
 jobs:
-  json-yaml-validate:
+  json-validate:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -22,3 +22,17 @@ jobs:
         with:
           comment: "true"
           json_schema_version: "draft-04"
+          
+  schema-tests:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install the JSON Schema CLI
+        uses: sourcemeta/jsonschema@v11.1.1
+
+      - name: Run generic schema unit tests
+        run: jsonschema test tests/gov-schema.json --resolve schemas/schema-2.0.0.json
+      
+      - name: Run CMS schema unit tests
+        run: jsonschema test tests/cms-schema.json --resolve schemas/cms/schema-0.2.0.json
\ No newline at end of file
diff --git a/code.json b/code.json
index 54fbaea..ebd855c 100644
--- a/code.json
+++ b/code.json
@@ -1,22 +1,29 @@
 {
   "name": "gov-codejson",
   "description": "code.json: An agency-wide metadata standard for software projects",
-  "longDescription": "This repository contains documentation on code.json, a metadata standard used to collect information on the agency's software projects in compliance with M-16-21 and the SHARE IT Act.",
+  "longDescription": "This repository contains documentation on code.json, a metadata standard used to collect information on agency software projects in compliance with M-16-21 and the SHARE IT Act.",
   "status": "Production",
   "permissions": {
-    "license": [
+    "licenses": [
       {
-        "name": "CC0 1.0 Universal",
+        "name": "CC0-1.0",
         "URL": "https://github.com/DSACMS/gov-codejson/blob/main/LICENSE"
       }
     ],
-    "usageType": "openSource",
+    "usageType": [
+      "openSource"
+    ],
     "exemptionText": ""
   },
   "organization": "Centers for Medicare & Medicaid Services",
   "repositoryURL": "https://github.com/DSACMS/gov-codejson",
+  "repositoryHost": "github.com/DSACMS",
+  "repositoryVisibility": "public",
   "vcs": "git",
   "laborHours": 3479,
+  "reuseFrequency": {
+    "forks": 2
+  },
   "platforms": [
     "web"
   ],
@@ -26,15 +33,20 @@
   ],
   "softwareType": "standalone/web",
   "languages": [
-    "Markdown"
+    "javascript"
   ],
-  "maintenance": "internal",
+  "maintenance": "community",
+  "contractNumber": [],
   "date": {
     "created": "2025-02-04T21:59:53Z",
-    "lastModified": "2025-02-11T18:45:30Z",
-    "metaDataLastUpdated": "2025-02-11T18:47:02.924Z"
+    "lastModified": "2025-08-13T22:27:54Z",
+    "metaDataLastUpdated": "2025-08-15T16:41:02.063Z"
   },
   "tags": [
+    "dsacms-tier3",
+    "government",
+    "json",
+    "metadata-standard",
     "guide",
     "codejson",
     "OSPO",
@@ -46,17 +58,23 @@
     "email": "opensource@cms.hhs.gov",
     "name": "CMS Open Source Team"
   },
+  "feedbackMechanism": "https://github.com/DSACMS/gov-codejson/issues",
+  "AIUseCaseID": "0",
   "localisation": false,
   "repositoryType": "standards",
   "userInput": false,
-  "fismaLevel": "Low",
+  "fismaLevel": "low",
   "group": "CMS/OA/DSAC",
+  "projects": [
+    "SHARE IT Act"
+  ],
+  "systems": [],
+  "upstream": "https://github.com/DSACMS/gov-codejson/network/dependencies",
   "subsetInHealthcare": [
-    "Operational"
+    "operational"
   ],
   "userType": [
-    "Government"
+    "government"
   ],
-  "repositoryHost": "github.com/DSACMS",
   "maturityModelTier": 3
 }
\ No newline at end of file
diff --git a/docs/examples.md b/docs/examples.md
index 827f614..8e6f0e9 100644
--- a/docs/examples.md
+++ b/docs/examples.md
@@ -1,175 +1,25 @@
 # Examples of code.json
 
-Below are good examples of metadata in CMS code.json files. We hope it helps when creating your repository-level code.json file.
+Below are examples of well-structured and comprehensive metadata in CMS code.json files. These examples demonstrate best practices for repository-level metadata documentation.
+
+For additional reference, the [tests directory](../schemas/tests) contain unit tests of code.json files from various DSACMS repositories. These tests help ensure consistency and compliance as we make future updates to the schemas.
+
+We encourage you to review these examples and tests when creating or updating your repository-level code.json file to maintain consistency with federal standards.
 
 ## Example 1: [DedupliFHIR](https://github.com/DSACMS/dedupliFHIR)
 
 DedupliFHIR is a desktop app tool that uses AI deduplication to identify duplicates in patient records. It is a [tier 3](https://github.com/DSACMS/repo-scaffolder/blob/dev/maturity-model-tiers.md#tier-information) project launched in production that receives user input.
 
-```
-{
-  "name": "dedupliFHIR",
-  "description": "Prototype for basic deduplication and aggregation of eCQM data",
-  "longDescription": "A CLI bundled with an electron front-end that provides data-linkage and AI deduplication for reported ACO data at scale.",
-  "status": "Production",
-  "permissions": {
-    "license": [
-      {
-        "name": "CC0 1.0 Universal",
-        "URL": "https://github.com/DSACMS/dedupliFHIR/blob/main/LICENSE"
-      }
-    ],
-    "usageType": "openSource",
-    "exemptionText": ""
-  },
-  "organization": "Centers for Medicare & Medicaid Services",
-  "repositoryURL": "https://github.com/DSACMS/dedupliFHIR",
-  "projectURL": "",
-  "repositoryHost": "github.com/DSACMS",
-  "repositoryVisibility": "public",
-  "vcs": "git",
-  "laborHours": 4271,
-  "reuseFrequency": {
-    "forks": 3,
-    "clones": 0
-  },
-  "platforms": [
-    "windows",
-    "mac",
-    "linux"
-  ],
-  "categories": [
-    "data-analytics",
-    "application-development",
-    "data-collection"
-  ],
-  "softwareType": "standalone/desktop",
-  "languages": [
-    "Python",
-    "JavaScript",
-    "HTML",
-    "CSS",
-    "Shell",
-    "Makefile"
-  ],
-  "maintenance": "internal",
-  "contractNumber": [],
-  "date": {
-    "created": "2023-06-22T17:08:19Z",
-    "lastModified": "2025-02-13T18:44:26Z",
-    "metaDataLastUpdated": "2025-06-10T14:55:32.836Z"
-  },
-  "tags": [
-    "AI",
-    "deduplication",
-    "data",
-    "ACA",
-    "FHIR",
-    "featured"
-  ],
-  "contact": {
-    "email": "opensource@cms.hhs.gov",
-    "name": "CMS Open Source Team"
-  },
-  "feedbackMechanisms": "https://github.com/DSACMS/dedupliFHIR/issues",
-  "AIUseCaseID": "0",
-  "localisation": false,
-  "repositoryType": "application",
-  "userInput": "true",
-  "fismaLevel": "Moderate",
-  "group": "CMS/OA/DSAC",
-  "projects": [],
-  "systems": [],
-  "upstream": "https://github.com/DSACMS/dedupliFHIR/network/dependencies",
-  "subsetInHealthcare": [
-    "Operational"
-  ],
-  "userType": [
-    "Providers"
-  ],
-  "maturityModelTier": "3"
-}
-```
+Link to code.json file: [codejson-example-dedupliFHIR.json](https://github.com/DSACMS/gov-codejson/blob/main/tests/examples/codejson-example-dedupliFHIR.json)
 
 ## Example 2: [CMS Metrics Website](https://github.com/DSACMS/metrics)
 
 The CMS Metrics Website is a [tier 3](https://github.com/DSACMS/repo-scaffolder/blob/dev/maturity-model-tiers.md#tier-information) project where government employees can view repository metrics on CMS open source projects, currently maintained by the CMS OSPO.
 
-```
-{
-  "name": "metrics",
-  "description": "CMS Open Source Repository Metrics Website",
-  "longDescription": "The CMS Repository Metrics Website shows an overview of software development activity across open source projects within a specified organization. It is designed for developers and program managers interested in monitoring health and activity of CMS open source repositories.",
-  "status": "Production",
-  "permissions": {
-    "license": [
-      {
-        "name": "CC0 1.0 Universal",
-        "URL": "https://github.com/DSACMS/metrics/blob/main/LICENSE.md"
-      }
-    ],
-    "usageType": "openSource",
-    "exemptionText": ""
-  },
-  "organization": "Centers for Medicare & Medicaid Services",
-  "repositoryURL": "https://github.com/DSACMS/metrics",
-  "projectURL": "https://dsacms.github.io/metrics/",
-  "repositoryHost": "github.com/DSACMS",
-  "repositoryVisibility": "public",
-  "vcs": "git",
-  "laborHours": 20722,
-  "reuseFrequency": {
-    "forks": 4,
-    "clones": 0
-  },
-  "platforms": [
-    "web"
-  ],
-  "categories": [
-    "data-visualization",
-    "data-analytics"
-  ],
-  "softwareType": "standalone/web",
-  "languages": [
-    "Liquid",
-    "JavaScript",
-    "CSS",
-    "Python",
-    "Shell"
-  ],
-  "maintenance": "internal",
-  "contractNumber": [],
-  "date": {
-    "created": "2023-07-18T14:10:58Z",
-    "lastModified": "2025-06-01T11:36:12Z",
-    "metaDataLastUpdated": "2025-06-06T16:36:38.949Z"
-  },
-  "tags": [
-    "metrics",
-    "ospo",
-    "repository",
-    "featured"
-  ],
-  "contact": {
-    "email": "opensource@cms.hhs.gov",
-    "name": "CMS/OA/DSAC/OSPO"
-  },
-  "feedbackMechanisms": "https://github.com/DSACMS/metrics/issues",
-  "AIUseCaseID": "0",
-  "localisation": false,
-  "repositoryType": "website",
-  "userInput": "No",
-  "fismaLevel": "Low",
-  "group": "CMS/OA/DSAC",
-  "projects": [],
-  "systems": [],
-  "upstream": "https://github.com/DSACMS/metrics/network/dependencies",
-  "subsetInHealthcare": [
-    "Operational"
-  ],
-  "userType": [
-    "Government"
-  ],
-  "maturityModelTier": 3
-}
-```
+Link to code.json file: [codejson-example-metrics.json](https://github.com/DSACMS/gov-codejson/blob/main/tests/examples/codejson-example-metrics.json)
+
+## Example 3: [gov-codejson](https://github.com/DSACMS/gov-codejson)
+
+gov-codejson (this repository!) is a [tier 3](https://github.com/DSACMS/repo-scaffolder/blob/dev/maturity-model-tiers.md#tier-information) project containing documentation on the code.json metadata standard, currently maintained by the federal government community.
+
+Link to code.json file: [code.json](https://github.com/DSACMS/gov-codejson/blob/main/code.json)
\ No newline at end of file
diff --git a/schemas/cms/schema-0.2.0.json b/schemas/cms/schema-0.2.0.json
index 7810eb4..9b9e036 100644
--- a/schemas/cms/schema-0.2.0.json
+++ b/schemas/cms/schema-0.2.0.json
@@ -317,9 +317,9 @@
             "type": "string",
             "description": "Level of security categorization assigned to an information system under the Federal Information Security Modernization Act (FISMA): https://security.cms.gov/learn/federal-information-security-modernization-act-fisma",
             "enum": [
-                "Low",
-                "Moderate",
-                "High"
+                "low",
+                "moderate",
+                "high"
             ]
         },
         "group": {
@@ -349,10 +349,10 @@
             "items": {
                 "type": "string",
                 "enum": [
-                    "Policy",
-                    "Operational",
-                    "Medicare",
-                    "Medicaid"
+                    "policy",
+                    "operational",
+                    "medicare",
+                    "medicaid"
                 ]
             },
             "description": "Healthcare-related subset"
@@ -362,9 +362,9 @@
             "items": {
                 "type": "string",
                 "enum": [
-                    "Providers",
-                    "Patients",
-                    "Government"
+                    "providers",
+                    "patients",
+                    "government"
                 ]
             },
             "description": "Types of users who interact with the software"
diff --git a/schemas/schema-2.0.0.json b/schemas/schema-2.0.0.json
index 68d5574..a01e16b 100644
--- a/schemas/schema-2.0.0.json
+++ b/schemas/schema-2.0.0.json
@@ -151,6 +151,13 @@
             },
             "additionalProperties": true
         },
+        "languages": {
+            "type": "array",
+            "description": "Programming languages that make up the codebase",
+            "items": {
+                "type": "string"
+            }
+        },
         "maintenance": {
             "type": "string",
             "description": "The dedicated staff that keeps the software up-to-date, if any",
@@ -241,5 +248,5 @@
         "feedbackMechanism",
         "AIUseCaseID"
     ],
-    "additionalProperties": false
+    "additionalProperties": true
 }
\ No newline at end of file
diff --git a/tests/cms-schema.json b/tests/cms-schema.json
new file mode 100644
index 0000000..25ae01e
--- /dev/null
+++ b/tests/cms-schema.json
@@ -0,0 +1,21 @@
+{
+    "target": "../schemas/cms/schema-0.2.0.json",
+    "$comment": "This test suite validates code.json files for compliance with the CMS schema requirements.",
+    "tests": [
+        {
+            "description": "Example 1: DedupliFHIR",
+            "valid": true,
+            "dataPath": "./examples/codejson-example-dedupliFHIR.json"
+        },
+        {
+            "description": "Example 2: metrics",
+            "valid": true,
+            "dataPath": "./examples/codejson-example-metrics.json"
+        },
+        {
+            "description": "Example 3: gov-codejson",
+            "valid": true,
+            "dataPath": "../code.json"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/tests/examples/codejson-example-dedupliFHIR.json b/tests/examples/codejson-example-dedupliFHIR.json
new file mode 100644
index 0000000..f7af54b
--- /dev/null
+++ b/tests/examples/codejson-example-dedupliFHIR.json
@@ -0,0 +1,83 @@
+{
+    "name": "dedupliFHIR",
+    "description": "Prototype for basic deduplication and aggregation of eCQM data",
+    "longDescription": "A CLI bundled with an Electron.js front-end that provides data-linkage and AI deduplication for reported Accountable Care Organization (ACO) data at scale.",
+    "status": "Production",
+    "permissions": {
+        "licenses": [
+            {
+                "name": "CC0-1.0",
+                "URL": "https://github.com/DSACMS/dedupliFHIR/blob/main/LICENSE"
+            }
+        ],
+        "usageType": [
+            "openSource"
+        ],
+        "exemptionText": ""
+    },
+    "organization": "Centers for Medicare & Medicaid Services",
+    "repositoryURL": "https://github.com/DSACMS/dedupliFHIR",
+    "repositoryHost": "github.com/DSACMS",
+    "repositoryVisibility": "public",
+    "vcs": "git",
+    "laborHours": 4271,
+    "reuseFrequency": {
+        "forks": 3,
+        "clones": 0
+    },
+    "platforms": [
+        "windows",
+        "mac",
+        "linux"
+    ],
+    "categories": [
+        "data-analytics",
+        "application-development",
+        "data-collection"
+    ],
+    "softwareType": "standalone/desktop",
+    "languages": [
+        "Python",
+        "JavaScript",
+        "HTML",
+        "CSS",
+        "Shell",
+        "Makefile"
+    ],
+    "maintenance": "internal",
+    "contractNumber": [],
+    "date": {
+        "created": "2023-06-22T17:08:19Z",
+        "lastModified": "2025-02-13T18:44:26Z",
+        "metaDataLastUpdated": "2025-06-10T14:55:32.836Z"
+    },
+    "tags": [
+        "AI",
+        "deduplication",
+        "data",
+        "ACA",
+        "FHIR",
+        "featured"
+    ],
+    "contact": {
+        "email": "opensource@cms.hhs.gov",
+        "name": "CMS Open Source Team"
+    },
+    "feedbackMechanism": "https://github.com/DSACMS/dedupliFHIR/issues",
+    "AIUseCaseID": "0",
+    "localisation": false,
+    "repositoryType": "application",
+    "userInput": true,
+    "fismaLevel": "moderate",
+    "group": "CMS/OA/DSAC",
+    "projects": [],
+    "systems": [],
+    "upstream": "https://github.com/DSACMS/dedupliFHIR/network/dependencies",
+    "subsetInHealthcare": [
+        "operational"
+    ],
+    "userType": [
+        "providers"
+    ],
+    "maturityModelTier": 3
+}
\ No newline at end of file
diff --git a/tests/examples/codejson-example-metrics.json b/tests/examples/codejson-example-metrics.json
new file mode 100644
index 0000000..5a448e7
--- /dev/null
+++ b/tests/examples/codejson-example-metrics.json
@@ -0,0 +1,78 @@
+{
+    "name": "metrics",
+    "description": "CMS Open Source Repository Metrics Website",
+    "longDescription": "The CMS Repository Metrics Website shows an overview of software development activity across open source projects within a specified organization. It is designed for developers and program managers interested in monitoring health and activity of CMS open source repositories.",
+    "status": "Production",
+    "permissions": {
+        "licenses": [
+            {
+                "name": "CC0-1.0",
+                "URL": "https://github.com/DSACMS/metrics/blob/main/LICENSE.md"
+            }
+        ],
+        "usageType": [
+            "openSource"
+        ],
+        "exemptionText": ""
+    },
+    "organization": "Centers for Medicare & Medicaid Services",
+    "repositoryURL": "https://github.com/DSACMS/metrics",
+    "projectURL": "https://dsacms.github.io/metrics/",
+    "repositoryHost": "github.com/DSACMS",
+    "repositoryVisibility": "public",
+    "vcs": "git",
+    "laborHours": 20722,
+    "reuseFrequency": {
+        "forks": 4,
+        "clones": 0
+    },
+    "platforms": [
+        "web"
+    ],
+    "categories": [
+        "data-visualization",
+        "data-analytics"
+    ],
+    "softwareType": "standalone/web",
+    "languages": [
+        "Liquid",
+        "JavaScript",
+        "CSS",
+        "Python",
+        "Shell"
+    ],
+    "maintenance": "internal",
+    "contractNumber": [],
+    "date": {
+        "created": "2023-07-18T14:10:58Z",
+        "lastModified": "2025-06-01T11:36:12Z",
+        "metaDataLastUpdated": "2025-06-06T16:36:38.949Z"
+    },
+    "tags": [
+        "metrics",
+        "ospo",
+        "repository",
+        "featured"
+    ],
+    "contact": {
+        "email": "opensource@cms.hhs.gov",
+        "name": "CMS/OA/DSAC/OSPO"
+    },
+    "feedbackMechanism": "https://github.com/DSACMS/metrics/issues",
+    "AIUseCaseID": "0",
+    "localisation": false,
+    "repositoryType": "website",
+    "userInput": false,
+    "fismaLevel": "low",
+    "group": "CMS/OA/DSAC",
+    "projects": [],
+    "systems": [],
+    "upstream": "https://github.com/DSACMS/metrics/network/dependencies",
+    "subsetInHealthcare": [
+        "operational"
+    ],
+    "userType": [
+        "government"
+    ],
+    "maturityModelTier": 3
+}
\ No newline at end of file
diff --git a/tests/gov-schema.json b/tests/gov-schema.json
new file mode 100644
index 0000000..9fc981c
--- /dev/null
+++ b/tests/gov-schema.json
@@ -0,0 +1,21 @@
+{
+    "target": "../schemas/schema-2.0.0.json",
+    "$comment": "This test suite validates CMS code.json files for compliance with the generic schema, ensuring alignment with federal government metadata standards.",
+    "tests": [
+        {
+            "description": "Example 1: DedupliFHIR",
+            "valid": true,
+            "dataPath": "./examples/codejson-example-dedupliFHIR.json"
+        },
+        {
+            "description": "Example 2: metrics",
+            "valid": true,
+            "dataPath": "./examples/codejson-example-metrics.json"
+        },
+        {
+            "description": "Example 3: gov-codejson",
+            "valid": true,
+            "dataPath": "../code.json"
+        }
+    ]
+}
\ No newline at end of file