intercepto

Intercept API calls and mock their status code and response body, right in the browser.

Tired of waiting on a backend that isn't ready yet? Intercepto lets you fake it. Mock any API response without touching your backend. Just set a URL pattern and HTTP method, define the status code and response body, hit enable — and every matching request now returns exactly what you told it to. 🎯 Match requests by URL pattern and HTTP method 🧾 Return custom status codes with JSON or text bodies 🌐 Works with fetch and XMLHttpRequest 💾 100% local — nothing leaves your browser 📖 Free and open source Perfect for testing edge cases, error states, and slow networks before the real API is ready — no mock server, no proxy, no config files required.