What can an API check assert?
API checks send custom methods, headers, and bodies, and assert status-code ranges, JSONPath expressions, and JSON Schema validation. Multi-step checks chain requests and extract variables from one response into the next — for example logging in, then calling an authenticated endpoint (paid plans).
Can I import my existing API definitions?
Yes — OpenAPI and Postman collections import directly (paid plans): pick operations and PageLantern creates matching monitors. Every check run can also be exported as a HAR file for debugging.