rest-graphql-debug

Debug unexpected REST API status codes by isolating connectivity, TLS, and authentication layers before validating request formatting and response parsing. This step-by-step API isolation identifies whether wrong status codes stem from network failures or payload mismatches.

GraphQL APIs often return HTTP 200 status codes while embedding application errors within the response payload. Debugging this requires handling GraphQL errors inside the HTTP 200 response payload and validating content-type before JSON parsing to isolate the semantic failure.

Diagnose API authentication failures by systematically isolating the TLS, request formatting, and header layers. This approach pinpoints whether auth failures originate from certificate issues, malformed credentials, or expired tokens during integration testing.

Verify API regressions by capturing correlation IDs and applying repro-ready verification patterns to compare expected behavior against observed HTTP status and response bodies. This supports vendor debugging when provider behavior changes unexpectedly.

Debug webhook callbacks returning unexpected response bodies by validating content-type before JSON parsing and inspecting HTTP headers. This isolates connectivity, authentication, and semantic validation issues for faster root-cause discovery.

When integration testing fails to parse responses, check the content-type validation before JSON parsing and inspect HTTP status and headers. This isolates whether parsing issues stem from request formatting errors or semantic validation failures.