FastAPI is a modern, fast (high-performance), web framework for building APIs with Python based on standard Python type hints. The key features are: Fast : Very high performance, on par with NodeJS and Go (thanks to Starlette and Pydantic).

Once you go to http://127.0.0.1:8000/redoc you will see that you are using your custom logo (in this example, FastAPI's logo):

Interactive API documentation and exploration web user interfaces. As the framework is based on OpenAPI, there are multiple options, 2 included by default. Swagger UI , with interactive exploration, call and test your API directly from the browser.

自動対話型の API ドキュメントが新しいボディも含めて自動でアップデートされます: "Try it out"ボタンをクリックしてください。パラメータを入力して API と直接やりとりすることができます: それから、"Execute" ボタンをクリックしてください。

FastAPI framework, high performance, easy to learn, fast to code, ready for production

FastAPI generates a "schema" with all your API using the OpenAPI standard for defining APIs. "Schema" ¶ A "schema" is a definition or description of something.

Metadata for API¶ You can set the following fields that are used in the OpenAPI specification and the automatic API docs UIs:

FastAPI framework, high performance, easy to learn, fast to code, ready for production

FastAPI framework, high performance, easy to learn, fast to code, ready for production

FastAPI framework, high performance, easy to learn, fast to code, ready for production