API Sniffer Pro

Capture, search, export, and replay API calls (fetch & XHR). Live view, filters, curl export, sessions, dark mode.

API Sniffer Pro is a lightweight, powerful tool for monitoring and analyzing API traffic in real time — without needing DevTools open. Easily capture, search, filter, export, and replay HTTP requests (Fetch & XHR) across any website you visit. Key Features Live Capture – Instantly view all outgoing API requests and responses. Powerful Filters – Search or filter by method, domain, status, or keyword. Replay & Edit – Resend captured requests with modified parameters or headers. Export Options – Save requests as cURL commands, JSON, or plain text for sharing or debugging. Dark Mode – Eye-friendly interface for night-time use. How to Use Install the extension. Open the popup and ensure capture is ON. Browse any site — requests will appear live in the capture view. Click a request to inspect details, edit, or resend it. Export or save sessions as needed. API Sniffer Pro runs entirely in your browser and does not collect or send your data anywhere.