Send HTTP requests with custom methods, headers, and bodies, then inspect status, headers, and response — no CORS limits. This API Tester is part of our free developer tools collection on freetoolstouse. It runs entirely in your browser, so your files and inputs stay on your device unless the tool explicitly performs a network check (for example DNS or SSL lookups). There is no signup, no watermark, and no usage cap. Use it whenever you need a fast, accurate result without installing software.
Send HTTP requests with custom methods, headers, and bodies, then inspect status, headers, and response — no CORS limits.
GET requests do not send a body.
Requests are proxied through the server to bypass browser CORS limits. Calls to localhost, private networks, and internal hosts are blocked, and responses are capped for safety.
