API References

Generate beautiful, interactive API documentation from OpenAPI and AsyncAPI documents. The API Reference is open source, free, and renders modern documentation with built-in request testing from just a few lines of code.

It works from a single HTML page, a CDN script, or one of the many framework integrations for Express, Fastify, Hono, NestJS, Next.js, Nuxt, ASP.NET Core, FastAPI, and more.

Ready to render your first reference? Follow the Getting Started guide.

Go further

• Configuration — customize behavior, authentication, and layout
• Themes — match the reference to your brand
• Plugins — extend the reference with custom features