Looking for an auth library for FastHTML

[PiGo86]

Hi all!

I am discovering FastHTML and I really enjoy it! It could really simplify my current stack for my side projects (Django + HTMX).

I am looking for an authentication library that would play well with FastHTML, with email registration and validation.

Does anyone have any experience to share on that?

Thanks a lot, and congrats to the devs on this nice project!

[Karthik777]

fastHTML automatically comes with a basic authmw.py and you can see that example in their fasthtml-example repo. I've also implemented a fastHTML based webapp starter here: https://github.com/Karthik777/lego . It comes with registration via email and google and GitHub Oauth. I'm almost done with my next version upgrade with schedulers, hetzner cloud hosting and carefully picked themes, js state management for nifty UI things.
Hopefully this helps.

[Karthik777]

the auth module in https://github.com/Karthik777/lego comes with configurable social auth and basic auth with ui with monsterui.

[SpaceShaman]

You could try UserHarbor. It’s framework agnostic and supports registration, email verification, login, sessions, and password resets.

With a harbor = UserHarbor(...) instance configured with storage and email delivery, FastHTML routes can call it directly:

@app.post("/register")
def register(username: str, email: str, password: str):
    harbor.register(username=username, email=email, password=password)
    return P("Check your email to verify your account.")

@app.get("/verify")
def verify(token: str):
    harbor.verify_email(token)
    return P("Email verified! You can now log in.")

@app.post("/login")
def login(username: str, password: str, session):
    session["token"] = harbor.login(username=username, password=password)
    return RedirectResponse("/", status_code=303)

Then use harbor.get_current_user(session.get("token")) in FastHTML’s beforeware to protect routes. You provide the forms and error handling; UserHarbor handles the account operations.