API Documentation Generator
Automatically generates API documentation and OpenAPI specifications by scanning route files. Supports markdown output for humans and OpenAPI 3.0 specs for tools like Swagger. Zero configuration required.
🚀 Turn your API routes into professional documentation instantly. This tool scans your code, automatically extracts endpoint details, and generates clean markdown docs or OpenAPI specs for Swagger. One command, zero configuration—perfect for APIs with missing or outdated docs.
💡 Ideal when you're shipping fast and docs fell behind, inheriting undocumented code, or need Swagger UI ready for your team. Works with any Node.js project and requires just an OpenAI API key to understand your route handlers.
✨ No setup hassles, no paywalls—just run it and get professional API documentation that keeps pace with your code changes.
Requirements
OpenAI API key for GPT-4o-mini model access