API Debugger - Capture & Debug HTTP Requests, Replay & Test

Inspect every HTTP request your browser makes. Capture, replay, build, and debug APIs. No account. No tracking.

API Debugger lets you inspect every HTTP request your browser makes. Capture requests and responses, replay them with edits, build new API calls from scratch, and debug issues without leaving your browser. Features: - Capture all network requests with headers, bodies, status codes, and timing - Replay requests with modifications to test APIs quickly - Build and test API calls with a visual request builder - Inspect requests by tab, filter, and search through captured traffic - Works entirely locally — no account, no tracking, no data sent to third parties Perfect for developers debugging APIs, testing endpoints, or inspecting how web apps communicate with backends.