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Connexion

Python framework that builds an API from an OpenAPI or Swagger specification and validates requests and responses against it.

Connexion is a Python framework that builds an API from an OpenAPI or Swagger specification. The framework validates requests and responses against the specification. It is installed with pip. The quickstart runs an application with uvicorn during development, and recommends gunicorn with uvicorn workers in production. Connexion is maintained by Robbe Sneyders and Ruwan Lambrichts.

Worth knowing

The FlaskApp class leverages Flask, which is a separate framework, so an application built with that class also uses Flask.

Identity

Status
Active
Maintainer
Robbe Sneyders and Ruwan Lambrichts4
First release
20159

Rendering and deploy

Runs as
Always on6
Install with
pip3

Releases

Current major version
38
Last release
2025-10-138

Adoption

GitHub stars
4,6122
Contributors
21510

Why these figures do not compare

Sources

  1. 2026-10-26: links
    github.com/spec-first/connexion
  2. 2026-10-26: links, Written in, License, GitHub stars
    api.github.com/repos/spec-first/connexion
  3. 2026-10-26: links, Categories, Runtime, Install with
    raw.githubusercontent.com/spec-first/connexion/main/README.md
  4. 2026-10-26: Maintainer
    raw.githubusercontent.com/spec-first/connexion/main/NOTICE
  5. 2026-10-26: Minimum runtime
    pypi.org/pypi/connexion/json
  6. 2026-10-26: Runs as
    raw.githubusercontent.com/spec-first/connexion/main/docs/quickstart.rst
  7. 2026-10-26: License model
    raw.githubusercontent.com/spec-first/connexion/main/LICENSE
  8. 2026-10-26: Current major version, Last release
    api.github.com/repos/spec-first/connexion/releases
  9. 2026-10-26: First release
    api.github.com/repos/spec-first/connexion/commits/v0.4
  10. 2026-10-26: Contributors
    api.github.com/repos/spec-first/connexion/contributors?per_page=1

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