Fetchwing – API Client & Mock Server for DevTools

REST API client for DevTools: paste cURL, send HTTP requests, organize collections, and mock API responses on live pages.

Fetchwing is a lightweight REST API client that lives in Chrome DevTools, with built-in API mocking. Copy a request as cURL from the Network tab, paste it, send it, tweak it, and make your page get the JSON response you want while the real API is unfinished or misbehaving. SEND HTTP REQUESTS • Network tab → right-click → Copy as cURL, then one click on Paste cURL • Import a file holding many cURL commands at once • Edit method, URL, query parameters, headers and body; cookies from cURL are sent too • Status, time, size and headers, plus a JSON viewer you can fold • Collections, folders, open tabs and quick search (Ctrl/⌘+K) • Environments with {{variables}}; secret values stay on your computer MOCK API RESPONSES • Turn one on and pages calling the same method and URL get your status, headers, body and delay • Matches the full URL including the query, in any order • Works for fetch and XMLHttpRequest, and keeps working with DevTools closed • Start from a real response with one click, then edit it • The toolbar badge counts active ones; pause them all in one click SYNC (OPTIONAL) • Sign in to keep your workspace in one file in your own Google Drive and use it on other computers • Only asks for your email and access to the file it creates (drive.file) PRIVATE BY DESIGN • Asks for access to a site only when you first send to it or use it for a mock • No servers, no analytics, no ads; nothing is sent to the developer • Free and open source (MIT): https://github.com/HDuy-Dev/fetchwing Not affiliated with Google. Google Drive is a trademark of Google LLC.