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Description
Intercept API requests and modify responses: mock response bodies, edit headers, redirect, or block. No code changes needed. Request Modify — intercept and modify network requests with your own rules. Modify request & response headers Redirect or block requests by URL pattern Mock API responses (fetch/XHR) without touching your backend Rules panel in DevTools, quick toggle in the popup All processing happens locally in your browser Free tier includes up to 5 rules with every feature unlocked. Pro (one-time or yearly) removes the limit.