FastAPI plugin to enable SSO to most common providers (such as Facebook login, Google login and login via Microsoft Office 365 account).

This allows you to implement the famous Login with Google/Facebook/Microsoft buttons functionality on your backend very easily.

Documentation: https://tomasvotava.github.io/fastapi-sso/

Source Code: https://github.com/tomasvotava/fastapi-sso

import os
from litestar import Litestar, Request, get
from litestar_sso.sso.google import GoogleSSO

CLIENT_ID = os.environ["CLIENT_ID"]
CLIENT_SECRET = os.environ["CLIENT_SECRET"]

app = Litestar()

sso = GoogleSSO(
    client_id=CLIENT_ID,
    client_secret=CLIENT_SECRET,
    redirect_uri="http://localhost:5000/auth/callback",
    allow_insecure_http=True,
)


@get("/auth/login")
async def auth_init():
    """Initialize auth and redirect"""
    async with sso:
        return await sso.get_login_redirect(params={"prompt": "consent", "access_type": "offline"})


@get("/auth/callback")
async def auth_callback(request: Request):
    """Verify login"""
    async with sso:
        user = await sso.verify_and_process(request)
    return user

An awesome demo site was created and is maintained by even awesomer Chris Karvouniaris (@chrisK824). Chris has also posted multiple Medium articles about FastAPI and FastAPI SSO.

Be sure to see his tutorials, follow him and show him some appreciation!

Please see his announcement with all the links.

Quick links for the eager ones:

• Demo site
• Medium articles

Please note that versions preceding 0.7.0 had a security vulnerability. The SSO instance could share state between requests, which could lead to security issues. Please update to 0.7.0 or newer.

Also, the preferred way of using the SSO instances is to use with statement, which will ensure the state is cleared. See example below.

If you'd like to support this project, consider buying me a coffee ☕. I tend to process Pull Requests faster when properly caffeinated 😉.

• Google
• Microsoft
• Facebook
• Spotify
• Fitbit
• Github (credits to Brandl for hint using accept header)
• generic (see docs)
• Notion
• Twitter (X)

• Kakao (by Jae-Baek Song - thdwoqor)
• Naver (by 1tang2bang92) - 1tang2bang92
• Gitlab (by Alessandro Pischedda) - Cereal84
• Line (by Jimmy Yeh) - jimmyyyeh
• LinkedIn (by Alessandro Pischedda) - Cereal84
• Yandex (by Akim Faskhutdinov) – akimrx
• Seznam (by Tomas Koutek) - TomasKoutek

See Contributing for a guide on how to contribute your own login provider.

pip install fastapi-sso

poetry add fastapi-sso

If you'd like to contribute and add your specific login provider, please see Contributing file.