apiflask
Integrates marshmallow for validation and serialization, and for OpenAPI generation with Swagger UI.
Python › Projects > Web APIs: “A lightweight Python web API framework based on Flask, supporting marshmallow schemas and Pydantic models.”
Flask › Third-Party Extensions > APIs > RESTful API + Swagger/OpenAPI Documentation Support: “Integrates marshmallow for validation and serialization, and for OpenAPI generation with Swagger UI.”