Network Sniper

DevTools network inspector, editor, and resend client with environment variables and local-first storage.

Network Sniper is a production-grade Chrome DevTools extension for web developers, API engineers, and QA professionals who need to inspect, edit, and resend HTTP/XHR/fetch requests directly within Chrome — with zero context switching. Stop copying cURL commands into external API clients just to test a parameter or change an authorization header. Network Sniper runs natively alongside your application in DevTools. 🎯 Key Features: • ⚡ Live Network Capture Engine: Passively captures XHR and fetch requests via Chrome DevTools APIs without injecting content scripts or slowing down web pages. • ✏️ Interactive Request Studio: Edit HTTP methods (GET, POST, PUT, PATCH, DELETE), query parameters, request headers, and payload bodies with live syntax validation and JSON beautification. • 🔄 Instant Resend & Response Diffing: Fire modified requests directly from DevTools and view a deep, visual diff against the original response (status codes, execution timing, header variances, and nested JSON differences). • 🔐 Secret Masking by Default: Authorization tokens, Cookies, Session IDs, and API keys are masked by default (••••••••) with one-click reveal toggles. Masking patterns are fully customizable. • 🌱 Multi-Environment Variables: Define dynamic {{base_url}}, {{token}}, and custom variables for Dev, Staging, and Production. Undefined variables are caught with pre-flight warnings before dispatch. • 📁 Collections & Folders: Organize frequent requests into named collections and folders with instant filtering by method, URL, or status code. • 💾 100% Local-First & Zero Telemetry: All data is stored in your browser's local storage. No user data, network payloads, or credentials ever leave your machine. • 📋 Developer Utility Suite: Export terminal-ready cURL commands or JavaScript fetch() snippets with one click.