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HTTP API Request Tester

API & Web

Test HTTP APIs directly from the browser.

HTTP
Direct from browser
Cross-origin APIs must allow this site's Origin.
Send a request to inspect status, timing, headers, and body.

Use cases

When to use HTTP API Request Tester

Test HTTP APIs directly from the browser.

1Debug a CORS-enabled JSON endpoint
2Inspect response status and headers
3Compare a request against a cURL example
4Parse URLs, run XPath queries, and inspect HTTP status codes
5Build minimal reproducible HTTP requests for frontend/backend debugging
6Review error codes and API compatibility before release

Guidance

Get reliable results

  1. 1Target APIs must allow the browser origin through CORS
  2. 2Avoid production secrets in test requests
  3. 3Use the browser network panel for requests blocked before response access
The browser cannot bypass CORS or TLS policy. Requests go directly to the target URL and may be blocked before the application can read the response.

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