Live endpoint probe
API Endpoint Checker — Is Your API Up?
Status code, latency, redirects + content type for the exact URL. Free.
Tests the exact endpoint path, including query strings.
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Reading API results
- 200 + JSON
- Healthy — endpoint answered with data.
- 401 / 403
- Reachable but refused the probe — key, OAuth scope, or bot rules. Up for authorized callers.
- 404
- Server up, route doesn't exist — check the path version (/v1 vs /v2).
- 429
- Rate-limited — back off and retry with the vendor's window.
- 500 / 502 / 504
- Origin failing — the API is having an incident.
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