Test API endpoint response times, inspect headers, and measure latency. Supports GET, POST, PUT, DELETE, and PATCH methods.
Browser CORS Restrictions
This tool runs in your browser, so requests to APIs without CORS headers will be blocked. It works best with CORS-enabled APIs, your own endpoints, or public APIs that allow cross-origin requests.
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Enter a URL and click "Test Endpoint" to measure response time.
Test any API endpoint with GET, POST, PUT, DELETE, or PATCH methods
Measure precise response time in milliseconds using the Performance API
Inspect response headers, status codes, and response body preview
Run multiple requests (3x) to calculate min, avg, and max latency
Custom request headers and body editor for authenticated or complex requests
History of recent tests for quick comparison across endpoints
Quickly check if an API endpoint is responding within acceptable latency thresholds before deploying.
Test different HTTP methods and payloads to debug API behavior and inspect response headers.
Run multiple requests to compare average response times between different endpoints or environments.
Verify third-party API endpoints are reachable and returning expected status codes before integrating.
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