For teams that depend on external APIs

Catch silent API contract changes before production does.

Give the monitor an OpenAPI 3 document and an authorized API. It checks a bounded set of GET endpoints, compares the baseline over time, and returns dated evidence when the contract drifts.

Try the Apify Actor →$0.01 per successfully checked endpoint

Built for small engineering teams that need an early signal, not another dashboard to babysit.

Bring the contract

Use an OpenAPI 3 URL or inline document, with a base URL when the spec needs one.

Check the boundary

Run bounded, authorized GET checks and validate status plus the documented JSON shape.

Keep the diff

Schedule the same state ID to separate baseline, unchanged, and changed outcomes.

Safety boundary

Designed to be useful without becoming an access workaround.

Buyer authorization is required for every endpoint and header.
GET only: no POST, PUT, PATCH, DELETE, login, CAPTCHA, or proxy rotation.
Response bodies are used for validation and are not written to the Dataset.
403, 404, 429, 5xx, and timeouts are reported instead of billed as a successful check.