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lich make middleware

Create custom HTTP middleware.

What is Middleware?

Middleware runs before/after every request:

  • Authentication - Verify tokens
  • Logging - Log requests
  • Rate limiting - Prevent abuse
  • CORS - Cross-origin handling

Usage

lich make middleware <Name>

Example

$ lich make middleware RequestTimer

✅ Middleware RequestTimerMiddleware created!

Files created:
  backend/api/middleware/request_timer.py

Generated Code

"""
RequestTimer middleware.
"""
import time
from starlette.middleware.base import BaseHTTPMiddleware
from starlette.requests import Request
from starlette.responses import Response


class RequestTimerMiddleware(BaseHTTPMiddleware):
    """
    Middleware to track request timing.
    """

    async def dispatch(self, request: Request, call_next) -> Response:
        # Before request
        start_time = time.time()

        # Process request
        response = await call_next(request)

        # After request
        process_time = time.time() - start_time
        response.headers["X-Process-Time"] = str(process_time)

        return response

Register Middleware

In backend/main.py:

from api.middleware.request_timer import RequestTimerMiddleware

app.add_middleware(RequestTimerMiddleware)

Built-in Middlewares

Lich includes pre-built middlewares. Enable with:

lich middleware enable rate-limit
lich middleware enable logging
lich middleware enable security

See Also