diff --git a/.github/workflows/verify-data.yml b/.github/workflows/verify-data.yml
index 7ec4f81..6354ba0 100644
--- a/.github/workflows/verify-data.yml
+++ b/.github/workflows/verify-data.yml
@@ -20,3 +20,19 @@ jobs:
           yamllint_file_or_dir: "*.yaml"
           yamllint_strict: false
           yamllint_comment: false
+
+      - name: "Set up Python"
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.x"
+
+      - name: "Install dependencies"
+        run: |
+          python3 -m pip install --upgrade pip
+          python3 -m pip install PyYAML jsonschema
+
+      - name: "Verify features"
+        run: |
+          for file in features_c*.yaml; do
+            python3 verify_features.py "$file"
+          done
diff --git a/features.schema.yaml b/features.schema.yaml
new file mode 100644
index 0000000..d685585
--- /dev/null
+++ b/features.schema.yaml
@@ -0,0 +1,83 @@
+---
+$schema: "http://json-schema.org/draft-07/schema#"
+title: Feature List Schema
+type: object
+required:
+  - features
+properties:
+  features:
+    type: array
+    items:
+      $ref: "#/definitions/feature"
+definitions:
+  feature:
+    type: object
+    required:
+      - desc
+    additionalProperties: false
+    properties:
+      desc:
+        type: string
+        description: "The title and / or description of the feature. Supports Markdown."
+      paper:
+        description: "One or multiple paper numbers that belong to the feature."
+        oneOf:
+          - type: string
+          - type: array
+            items:
+              type: string
+      lib:
+        type: boolean
+        default: false
+        description: "If true, the feature counts as a standard library feature."
+      support:
+        type: array
+        description: "A list of toolchains that support the feature."
+        items:
+          type: string
+          pattern: "^(GCC|Clang|MSVC|Xcode)( [0-9]+(\\.[0-9]+)*)?( \\((partial|hint)\\))?$"
+      hints:
+        type: array
+        description: "A list of hints targeting toolchains in the support list."
+        items:
+          type: object
+          required:
+            - target
+            - msg
+          additionalProperties: false
+          properties:
+            target:
+              type: string
+              description: "The toolchain that this hint targets."
+            msg:
+              type: string
+              description: "The reason for partial support, or the hint. Supports Markdown."
+      ftm:
+        type: array
+        description: "A list of feature-testing macros (FTM) for the feature."
+        items:
+          type: object
+          required:
+            - name
+            - value
+          additionalProperties: false
+          properties:
+            name:
+              type: string
+              description: "The name of the FTM."
+            value:
+              oneOf:
+                - type: string
+                - type: integer
+              description: "The value of the FTM."
+            desc:
+              type: string
+              description: "Optional description of what this FTM specifically refers to."
+      content:
+        type: string
+        description: "Information about the feature (e.g. a filename)."
+      keywords:
+        type: array
+        description: "A list of keywords to categorize the feature."
+        items:
+          type: string
diff --git a/features_c23.yaml b/features_c23.yaml
index 6a003c1..c0ee85d 100644
--- a/features_c23.yaml
+++ b/features_c23.yaml
@@ -1,3 +1,4 @@
+---
 features:
   - desc: "`static_assert` with no message"
     paper: N3020
diff --git a/features_c99.yaml b/features_c99.yaml
index c852de2..f21a6c1 100644
--- a/features_c99.yaml
+++ b/features_c99.yaml
@@ -1,3 +1,4 @@
+---
 features:
   - desc: "Universal-character-names in [identifiers](https://en.cppreference.com/w/c/language/identifiers.html)"
     support:
diff --git a/verify_features.py b/verify_features.py
new file mode 100644
index 0000000..c58825f
--- /dev/null
+++ b/verify_features.py
@@ -0,0 +1,35 @@
+import yaml
+import jsonschema
+import sys
+
+def validate_yaml(schema_file, data_file):
+    try:
+        with open(schema_file, 'r') as f:
+            schema = yaml.safe_load(f)
+        
+        with open(data_file, 'r') as f:
+            data = yaml.safe_load(f)
+            
+        jsonschema.validate(instance=data, schema=schema)
+        print(f"Verification successful: {data_file}")
+        return True
+    except jsonschema.exceptions.ValidationError as e:
+        print(f"Verification failed: {data_file}")
+        print(f"Error: {e.message}")
+        print(f"Path: {' -> '.join(map(str, e.path))}")
+        return False
+    except Exception as e:
+        print(f"An error occurred: {e}")
+        return False
+
+if __name__ == "__main__":
+    schema_path = "features.schema.yaml"
+    
+    if len(sys.argv) < 2:
+        print("Usage: python3 verify_features.py <data_file.yaml>")
+        sys.exit(1)
+        
+    data_path = sys.argv[1]
+    success = validate_yaml(schema_path, data_path)
+    if not success:
+        sys.exit(1)