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API JSON Debugging Workflow

A repeatable process for isolating payload errors fast, validating assumptions, and comparing failing responses against expected contracts.

Step-by-Step

  1. Capture raw response body and HTTP status.
  2. Run syntax checks in JSON Validator.
  3. Beautify with JSON Formatter.
  4. Compare to baseline using JSON Diff.
  5. Generate typed models if needed (TS, C#).

Common Debug Outcomes

  • Unexpected token due to non-JSON response body.
  • Type mismatch caused by upstream serialization changes.
  • Field removal/addition breaking strict consumers.

For repeated incidents, publish this flow in team runbooks and CI validation checks.

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