API Key Middleware for FastApi Python

When building secure web applications with FastAPI, verifying API keys is essential to ensure that only authorized users can access your services. The Oneloop Python SDK makes this process seamless by providing a middleware function that integrates easily into your FastAPI applications.

Getting Started with Oneloop Middleware

To begin using the Oneloop middleware in your FastAPI application, you first need to install the necessary dependencies. This includes FastAPI, typing, and the Oneloop Python SDK.

pip install typing fastapi oneloop-python

The Oneloop middleware is already defined in the Oneloop FastAPI Starter Documentation. You can refer to the documentation to integrate the middleware into your project or copy the code directly.

Using Oneloop Middleware in Your FastAPI Application

Once the middleware is set up, you can protect your routes by adding it to your FastAPI application.

Here's an example of how to use it:

from fastapi import Depends, FastAPI

# Available at https://github.com/oneloop-starter-kits/oneloop-python-fastapi-starter-kit  
from oneloop_middleware import oneloop_middleware
app = FastAPI()

# Define your routes
@app.get("/", dependencies=[Depends(oneloop_middleware())])
async def read_root():
    return {"Hello": "World"}

If you need to verify specific scopes and permissions, you can do so as well:

@app.get("/", dependencies=[Depends(oneloop_middleware([{"id": "profile", "read": True}]))])
async def read_root():
    return {"Hello": "World"}

Conclusion

The Oneloop middleware simplifies API key verification in FastAPI applications by leveraging the Oneloop Python SDK. By defining scopes and permissions, you can ensure that only authorized users have access to your API routes. This middleware not only enhances security but also makes it easy to manage API keys and their associated permissions. For a quick start, reference the [Oneloop FastAPI Starter Documentation](https://docs.oneloop.ai/sdk/starter-kits/fastapi), where the middleware is fully implemented and ready to use.