In the same workflow: Webhook Tester and Webhook Payload Viewer.

API Response Analyzer

Test any API endpoint: GET request, check status, latency, Content-Type, and JSON response. Get an API health score.

See example report

View demo report →

Related tools

Why use API Response Analyzer?

Production APIs fail in subtle ways: wrong Content-Type, slow TLS, or a 200 with an error object in JSON. This analyzer performs a GET from the browser, records timing and headers, and highlights parsing issues so you can spot regressions before customers do.

Practical tips

  • Test both the apex URL and any CDN or API-gateway hostname you expose publicly.
  • If JSON parsing fails, fetch the raw body with REST Endpoint Tester to inspect encoding.
  • Watch for cache headers: stale CDN responses often look like application bugs.

Common questions

Why might latency differ from curl?
Browsers add TLS negotiation, connection limits, and extension overhead. Use multiple samples and compare trends, not single numbers.
Can I analyze POST APIs here?
This page focuses on GET health checks. Use REST Endpoint Tester for methods with a body or custom headers.

About

Free API health check: GET request, check status, latency, Content-Type, JSON. Get API health score and recommendations.

Related tools

Used together

Next step

After api-response-analyzer, continue with Webhook Tester to validate the next API or webhook layer.