API Tester

Test any REST API free — send GET, POST, PUT, PATCH or DELETE requests with headers and body, and see the response instantly. No signup, no server.

How to use

  1. Pick a method (GET, POST, PUT, PATCH, DELETE) and paste the API URL.
  2. Add headers if needed (e.g. Authorization token) and a JSON body for POST/PUT/PATCH.
  3. Hit Send — status, time, headers and body appear below.

Note: requests go straight from your browser to the API. If an API blocks browser requests (CORS), you will see a clear error — that is the API's own restriction, not this tool's.

Why use our API tester?

Developers and students testing REST APIs usually install heavy desktop apps. This free online API tester works in any browser on phone or laptop — no install, no account, and your request data never passes through our server.

🔒 Private — requests go directly from your browser to the API. Nothing is stored.