API Request Tester
A mini Postman in your browser — send HTTP requests, inspect responses, test REST APIs for free. No extensions needed.
EnabledKeyValue
Response
Hit Send to see the response here
About CORS Restrictions
Some API requests may fail with a CORS error in the browser. This happens when the target server does not include Access-Control-Allow-Origin in its response headers. This is a browser security mechanism — the request does leave your browser, but the response is blocked. To test CORS-restricted APIs, use a server-side proxy, a browser extension that disables CORS, or run the request from your terminal with curl.
APIs listed in the Quick Examples (JSONPlaceholder, GitHub, Open Meteo, Dog CEO) all allow cross-origin requests and work well for testing.