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How to Mock an API Key Header Authentication Server in Python

A minimal HTTP server that validates requests using an X-API-Key header and returns JSON responses for authenticated and unauthenticated calls.

api authentication http

Python

import json
from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer

API_KEYS = {"test-user": "secret-key-123"}

class AuthHandler(BaseHTTPRequestHandler):
    def do_GET(self):
        auth = self.headers.get("X-API-Key")
        if not auth or auth not in API_KEYS.values():
            self.send_response…

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