Connexion

Connexion is a modern Python web framework that facilitates API-first development using OpenAPI (formerly Swagger) specifications. It automatically handles routing, request validation, authentication, parameter parsing, and response serialization based on your specification. Version 3.3.0 is the latest stable release, offering a modular, ASGI-compatible architecture with support for both Flask (WSGI) and Starlette (ASGI) backends. The library maintains an active release cadence, frequently publishing updates and new features.