FastAPI

APIRouter class used to group path operations and structure a FastAPI app across multiple files.

FastAPI utility to schedule background tasks executed after a response is sent to the client.

HTTP and WebSocket status code constants for FastAPI responses.

FastAPI fastapi/fastapi FastAPI Features Learn Python Types Intro Concurrency and async / await Tutorial - User Guide First Steps Path Parameters Query Parameters Request Body Query Parameters and String Validations Path Parameters and Numeric Validations Query Parameter Models Body - Multiple Parameters Body - Fields Body - Nested Models Declare Request Example Data Extra Data Types Cookie Parameters Header Parameters Cookie Parameter Models Header Parameter Models Response Model - Return Type

WebSocket exception class for raising errors in WebSocket connections with code and reason.

FastAPI fastapi/fastapi FastAPI Features Learn Python Types Intro Concurrency and async / await Tutorial - User Guide First Steps Path Parameters Query Parameters Request Body Query Parameters and String Validations Path Parameters and Numeric Validations Query Parameter Models Body - Multiple Parameters Body - Fields Body - Nested Models Declare Request Example Data Extra Data Types Cookie Parameters Header Parameters Cookie Parameter Models Header Parameter Models Response Model - Return Type

WebSocket support for FastAPI applications via Starlette integration.

FastAPI fastapi/fastapi FastAPI FastAPI On this page Sponsors Keystone Sponsor Gold Sponsors Silver Sponsors Opinions FastAPI Conf FastAPI mini documentary Typer , the FastAPI of CLIs Requirements Installation Example Create it Run it Check it Interactive API docs Alternative API docs Example upgrade Interactive API docs upgrade Alternative API docs upgrade Recap Deploy your app (optional) About FastAPI Cloud Deploy to other cloud providers Performance Dependencies standard Dependencies Without

FastAPI fastapi/fastapi FastAPI FastAPI On this page Sponsors Keystone Sponsor Gold Sponsors Silver Sponsors Opinions FastAPI Conf FastAPI mini documentary Typer , the FastAPI of CLIs Requirements Installation Example Create it Run it Check it Interactive API docs Alternative API docs Example upgrade Interactive API docs upgrade Alternative API docs upgrade Recap Deploy your app (optional) About FastAPI Cloud Deploy to other cloud providers Performance Dependencies standard Dependencies Without

FastAPI fastapi/fastapi FastAPI Features Learn Python Types Intro Concurrency and async / await Tutorial - User Guide First Steps Path Parameters Query Parameters Request Body Query Parameters and String Validations Path Parameters and Numeric Validations Query Parameter Models Body - Multiple Parameters Body - Fields Body - Nested Models Declare Request Example Data Extra Data Types Cookie Parameters Header Parameters Cookie Parameter Models Header Parameter Models Response Model - Return Type

FastAPI fastapi/fastapi FastAPI FastAPI On this page Sponsors Keystone Sponsor Gold Sponsors Silver Sponsors Opinions FastAPI Conf FastAPI mini documentary Typer , the FastAPI of CLIs Requirements Installation Example Create it Run it Check it Interactive API docs Alternative API docs Example upgrade Interactive API docs upgrade Alternative API docs upgrade Recap Deploy your app (optional) About FastAPI Cloud Deploy to other cloud providers Performance Dependencies standard Dependencies Without

FastAPI special function to declare and extract cookie parameters in path operations.

Exception class for raising HTTP client errors in FastAPI apps.

FastAPI's dependency injection system, exposed via Depends() and Security().

FastAPI's WebSocket support, provided by Starlette and importable from fastapi.

Class for receiving uploaded files in FastAPI path operation functions.

FastAPI's Request class gives direct access to the raw Starlette HTTP request.