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LAB · Design
Structured Output Validator
Validate JSON against a practical subset of JSON Schema: types, required fields, arrays, enums, and additional properties.
- Suggested time
- 10 min
- Output artifact
- An exact contract diagnosis and negative test cases.
- Privacy
- The schema and sample are processed only in your browser.
Local educational tool. Validate every result before production use.
How to use it well
- 1
Enter a real case without secrets or personal data.
- 2
Run, inspect, and challenge the assumptions; the output is not automatic truth.
- 3
Save the artifact in your project and turn it into a reviewable test or decision.