API Documentation Generator
SkillDocs & knowledgeGenerate API documentation from code. Use when the user wants to document APIs, create API reference, generate endpoint documentation, or needs help with OpenAPI/Swagger specs.
Available today. Use it from your connected AI after setup.
No other account needed.
Connect ahel once, and every AI you use reads what you have installed.
Then ask your AI: use the API Documentation Generator skill
What this skill tells your AI
The instructions your AI receives, as published by huangjia2019/claude-code-engineering in 04-Skills/projects/02-progressive-skill/.claude/skills/api-documenting/SKILL.md and read by ahel’s review.
Generate comprehensive API documentation from source code.
Quick Reference
For common documentation patterns, see PATTERNS.md.
Documentation Standards
See STANDARDS.md for our documentation conventions.
Process
Step 1: Identify API Endpoints
Look for:
- Route definitions (Express, FastAPI, etc.)
- Controller methods
- Handler functions
Step 2: Extract Information
For each endpoint, extract:
- HTTP method (GET, POST, PUT, DELETE, etc.)
- Path/route
- Parameters (path, query, body)
- Request/response schemas
- Authentication requirements
Step 3: Generate Documentation
Use the template in templates/endpoint.md for consistent formatting.
Step 4: Create Overview
Generate an index of all endpoints with the template in templates/index.md.
Output Formats
Markdown (Default)
Generate markdown documentation suitable for README or docs site.
OpenAPI/Swagger
If requested, generate OpenAPI 3.0 spec. See templates/openapi.yaml for structure.
Examples
See EXAMPLES.md for sample inputs and outputs.
Scripts
To auto-detect routes in common frameworks:
python scripts/detect_routes.py <source_directory>
To validate generated OpenAPI spec:
./scripts/validate_openapi.sh <spec_file>
Signals
- GitHub stars
- 1k
- Forks
- 388
- Last commit
- Jul 2026
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Advanced
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- Gateway key
api-documenting-huangjia2019- Source
- github.com/huangjia2019/claude-code-engineering