https://github.com/ossmafia/fastapi-clerk-middleware

FastAPI Auth Middleware for Clerk (https://clerk.com)
https://github.com/ossmafia/fastapi-clerk-middleware

authentication clerk clerk-auth clerk-authentication clerkauth fastapi jwks python

Last synced: about 11 hours ago
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FastAPI Auth Middleware for Clerk (https://clerk.com)

• Host: GitHub
• URL: https://github.com/ossmafia/fastapi-clerk-middleware
• Owner: OSSMafia
• License: mit
• Created: 2024-08-14T05:49:30.000Z (about 1 month ago)
• Default Branch: main
• Last Pushed: 2024-09-09T00:10:09.000Z (17 days ago)
• Last Synced: 2024-09-22T15:04:03.492Z (3 days ago)
• Topics: authentication, clerk, clerk-auth, clerk-authentication, clerkauth, fastapi, jwks, python
• Language: Python
• Homepage:
• Size: 19.5 KB
• Stars: 3
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# FastAPI Clerk Auth Middleware

FastAPI Auth Middleware for [Clerk](https://clerk.com)

Easily setup authentication on your API routes using your Clerk JWKS endpoint.

## Install

```bash

pip install fastapi-clerk-auth

```

## Basic Usage

```python

from fastapi import FastAPI, Depends

from fastapi_clerk_auth import ClerkConfig, ClerkHTTPBearer, HTTPAuthorizationCredentials

from fastapi.responses import JSONResponse

from fastapi.encoders import jsonable_encoder

app = FastAPI()

clerk_config = ClerkConfig(jwks_url="https://example.com/.well-known/jwks.json") # Use your Clerk JWKS endpoint

clerk_auth_guard = ClerkHTTPBearer(config=clerk_config)

@app.get("/")

async def read_root(credentials: HTTPAuthorizationCredentials | None = Depends(clerk_auth_guard)):

    return JSONResponse(content=jsonable_encoder(credentials))

```

The returned `credentials` model will either be of type `None` or `HTTPAuthorizationCredentials`. If the model is populated it will have the following properties:

- scheme

    - Indicates the scheme of the Authorization header (Bearer) 

- credentials

    - Raw token received from the Authorization header

- decoded

    - The payload of the decoded token

## Auto Errors

By default the middleware automatically returns 403 errors if the token is missing or invalid. You can disable that behavior by setting the following:

```python

clerk_config = ClerkConfig(jwks_url="https://example.com/.well-known/jwks.json", auto_error=False)

```

This will allow requests to reach the endpoint for additional logic or error handling.