FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.6+. It is one of the fastest Python frameworks available, as measured by independent benchmarks.

It is based on standard Python type hints. Using them, you get automatic data validation, serialization, and documentation. Including deeply nested JSON documents. And you get editor completion and checks everywhere.

Designed around the OpenAPI (Swagger) and JSON Schema standards.

It includes 2 alternative interactive API documentation systems that are generated automatically.

OAuth2 capable from the start (including JWT). Dependency Injection system, compatible with all databases (relational and NoSQL), Websockets, GraphQL, CORS, etc.