pargo-auth 0.1.4

Shared authentication middleware for PARGO backend services

pargo-auth

Shared authentication middleware for PARGO backend services. Verifies Supabase JWTs and provides FastAPI dependencies.

Installation

pip install pargo-auth

Quick Start

from fastapi import FastAPI, Depends
from pargo_auth import get_current_user, AuthenticatedUser

app = FastAPI()

@app.get("/me")
async def get_me(user: AuthenticatedUser = Depends(get_current_user)):
    return {
        "id": user.sub,
        "email": user.email,
    }

Configuration

Set these environment variables:

SUPABASE_URL=https://your-project.supabase.co
ENV=local  # Skip auth verification in local dev

Usage Patterns

Basic: Protect individual endpoints

from pargo_auth import get_current_user, AuthenticatedUser

@app.get("/protected")
async def protected(user: AuthenticatedUser = Depends(get_current_user)):
    return {"user_id": user.sub}

Protect entire router

from fastapi import APIRouter, Depends
from pargo_auth import require_auth

router = APIRouter(dependencies=[require_auth()])

@router.get("/data")
async def get_data():  # Auth already required by router
    return {"data": "secret"}

Optional auth (different behavior for logged-in vs anonymous)

from pargo_auth import SupabaseAuth, AuthenticatedUser

auth = SupabaseAuth()

@app.get("/content")
async def get_content(user: AuthenticatedUser | None = Depends(auth.get_user_optional)):
    if user:
        return {"content": "personalized", "user": user.sub}
    return {"content": "generic"}

Custom instance (non-default config)

from pargo_auth import SupabaseAuth

auth = SupabaseAuth(
    supabase_url="https://custom.supabase.co",
    skip_verification_in_dev=False,  # Always verify, even locally
)

@app.get("/strict")
async def strict_endpoint(user = Depends(auth.get_user)):
    return {"user": user.sub}

AuthenticatedUser

The AuthenticatedUser object contains:

Field	Type	Description
sub	str	Supabase user ID (stable, use as canonical identity)
email	str | None	User's email (if available)
email_verified	bool	Whether email is verified
raw_claims	dict | None	Full JWT payload for custom claims

Legacy Support

For backwards compatibility, the middleware also checks for x-user-id header if no Bearer token is present. This allows gradual migration from the old auth system.

Development

# Install dev dependencies
pip install -e ".[dev]"

# Run tests
pytest

License

MIT