Validate and monitor your APIs.
Built for AI agents and developers.
Three steps from endpoint to insight.
POST any endpoint URL to the API Sentinel validation endpoint with optional headers and check rules.
Receive a JSON report with status code, response time, SSL status, and per-check pass/fail results.
Register a monitor and get notified by email whenever your API starts failing its health checks.
Everything you need to trust your API layer.
Assert the exact HTTP status codes your endpoints must return.
Measure latency and flag responses that exceed your thresholds.
Detect expired or invalid TLS certificates before they break your users.
Scheduled checks run automatically at your chosen interval — no polling required.
Get notified instantly when a monitor fails so you can act before users notice.
Start free. Scale when you need to.