FastAuth¶

Simple and flexible authentication library for FastAPI — FastAPI-only by design.

Session, JWT, OIDC, and plain OAuth2 strategies. One class per strategy, one config object, your own SQLAlchemy or any ORM models. Asynchronous end to end.

Here's a quick example using SessionAuth - a class for the session authentication strategy:

auth = SessionAuth(
    adapter=SQLAlchemySessionAdapter,
    user_model=User,
    session_model=Session,
    db_session_dependency=get_db,
)
app.include_router(auth.router)

Start with Quickstart. Full signatures in the API reference; internals in ARCHITECTURE.md at the repo root.