APIFlask

APIFlask is a lightweight Python web API framework built on top of Flask. It enhances Flask with modern API features such as automatic request validation, response formatting, OpenAPI specification generation, and interactive API documentation (Swagger UI, Redoc, Elements, etc.). It is ORM/ODM-agnostic and offers flexible data schema support through both Marshmallow schemas and Pydantic models. The current stable version is 3.1.0, and it maintains an active release cadence, closely following Flask's development.