FastAPI Auth Example

This is an example of how to use FastAPI with JWT authentication, using the fastapi_users library. It also has async database access using SQLAlchemy

Currently uses SQLite as the database, but can be easily changed to any other database. It largely follows the example in the fastapi-users documentation, however I have laid the project out in a way that I find more readable and maintainable.

We use the database strategy instead of the default jwt strategy, as it allows us to invalidate tokens on the server side. For the Transport, we use the Bearer strategy where the token is sent in the Authorization header.

The project uses uv to manage the dependencies. To install the dependencies and switch to the virtual environment, run:

uv sync
source .venv/bin/activate # On Windows, use .venv\Scripts\activate

Now you can run the project with:

python main.py

Note

The above uses the --reload option, so the server will restart whenever you change a file. This is useful for development, but not recommended for production.

The project will be available at http://localhost:8000.

You can access the API documentation at http://localhost:8000/docs (or http://localhost:8000/redoc if you prefer that).