What is it?

FastAPI is a Python web framework for building APIs with a focus on performance, model validation and automatic documentation generation. It is built on top of many other frameworks (such as Starlette and Pydantic), leveraging their strengths to provide a complete solution for API development.

This framework makes it possible to design a OpenAPI specification using a code-first approach: by implementing endpoints and models, it will automatically generate an OpenAPI specification, served by Swagger UI or ReDoc. It is also possible to add authentication validation using common schemes such as basic authentication, API keys or JWTs, and this is automatically reflected in the API specification.

Resources

• Home page
• Source code
• Intro to FastAPI