{"library":"uvicorn","type":"library","category":null,"description":"Lightning-fast ASGI server for Python. Standard server for FastAPI and Starlette. Current version is 0.42.0 (Mar 2026). Requires Python >=3.10. The Gunicorn worker class was moved to a separate package.","language":"python","status":"active","version":"0.42.0","tags":["web","asgi","server","fastapi","starlette","async"],"last_verified":"Tue Jun 09","install":[{"cmd":"pip install uvicorn","imports":["from uvicorn_worker import UvicornWorker  # separate package\n# gunicorn app:app -w 4 -k uvicorn_worker.UvicornWorker","uvicorn.run('main:app', host='0.0.0.0', port=8000, workers=4)"]},{"cmd":"pip install \"uvicorn[standard]\"","imports":[]},{"cmd":"pip install uvicorn-worker","imports":[]}],"homepage":"https://uvicorn.dev/","github":"https://github.com/sponsors/encode","docs":null,"changelog":"https://uvicorn.dev/release-notes","pypi":"https://pypi.org/project/uvicorn/","npm":null,"openapi_spec":null,"status_page":null,"smithery":null,"compatibility":{"summary":{"python_range":"3.10–3.9","success_rate":67,"avg_install_s":2.3,"avg_import_s":null,"wheel_type":"wheel"},"url":"https://checklist.day/v1/registry/uvicorn/compatibility"}}