How to use REST API Tester
- Enter the URL and any method, headers or body into REST API Tester.
- Run it, and REST API Tester issues the request directly from your browser.
- Read the response REST API Tester shows below — it comes from the API you entered, not from this site.
About this tool
REST API Tester runs in your browser with no backend of its own. REST API Tester sends HTTP requests from your browser to the API endpoint you enter and shows the status, headers and body of the response.
Because the call is made by your browser, it follows the same CORS rules as any web page, so some cross-origin APIs may refuse to respond. The request is sent from your browser straight to the API you name; this site has no backend and never receives it, though that server and your network can see it. Cross-origin calls follow the browser's CORS rules, and a connection is required.
Frequently asked questions
What is REST API Tester for?
REST API Tester sends the HTTP request you configure from your browser to the API you specify and shows the response status, headers and body.
Do I need an account for REST API Tester?
No — REST API Tester needs no account, sign-up or installation.
Does REST API Tester send my request anywhere?
Yes — REST API Tester sends the request from your browser directly to the URL you enter. This site has no backend and never receives it, but the target server and your network do, and cross-origin calls follow browser CORS rules.
Can REST API Tester call any API from the browser?
REST API Tester can call any endpoint your browser is allowed to reach, but cross-origin APIs must send permissive CORS headers or the browser will block the response — that is a browser rule, not a limit of REST API Tester.