PassmanAI Python SDK

Official Python SDK for integrating "Sign in with Passman" into any Python web framework (FastAPI, Django, Flask, etc.).

PassmanAI is a decentralized, post-quantum password manager with zero-knowledge architecture. This SDK provides a robust, PKCE-secured OpenID Connect (OIDC) client that makes it trivial to authenticate users via Passman.

Quick Start

1. Install

pip install passmanai

2. Configure Environment Variables

Set your Passman API credentials in your environment:

PASSMAN_CLIENT_ID=your_client_id
PASSMAN_CLIENT_SECRET=your_client_secret
PASSMAN_REDIRECT_URI=http://localhost:8000/auth/callback
PASSMAN_ISSUER_URL=http://localhost:4010

Get your client credentials by registering an OIDC client in your PassmanAI dashboard.

3. Basic Usage (Framework Agnostic)

The SDK provides a PassmanClient that handles OIDC discovery, PKCE generation, and token exchange.

from passmanai import PassmanClient

# Initialize the client (automatically loads from env vars)
passman = PassmanClient()

# 1. Generate the authorization URL and PKCE state
auth_url, state, code_verifier = passman.get_authorization_url()

# Save `state` and `code_verifier` in your session, then redirect the user to `auth_url`.
# ... user logs in on Passman and gets redirected to your callback ...

# 2. Exchange the authorization code for a token and user profile
# In your callback route, reconstruct the full URL requested:
callback_url = "http://localhost:8000/auth/callback?code=...&state=..."

profile, tokens = passman.fetch_user_profile(
    authorization_response_url=callback_url,
    state=saved_state_from_session,
    code_verifier=saved_code_verifier_from_session
)

print(f"Logged in as: {profile['preferred_username']} (ID: {profile['sub']})")

Advanced Configuration

You can explicitly pass credentials if you prefer not to use environment variables:

passman = PassmanClient(
    client_id="your_client_id",
    client_secret="your_client_secret",
    redirect_uri="https://myapp.com/auth/callback",
    issuer_url="https://passmanai.com" # Defaults to https://passmanai.com if not set
)

Security

• PKCE enforced — Prevents authorization code interception attacks.
• State parameter — Protects against CSRF attacks.
• Built on top of Authlib, the industry standard for Python OAuth/OIDC.