JSON Schema validator (browser, for API QA)

Paste an instance and a JSON Schema. Validation runs with AJV in the browser. Large schemas or $ref edge-cases can differ from your server runtime; use this to reason about payloads next to a semantic diff.

Full JSON tool suite — JSON Schema is also under “More” on the main suite page.

Check a response (or request) instance against a JSON Schema—useful for contract thinking next to your semantic diff. Uses AJV in the browser; very large pastes can feel slow.

Instance (JSON to validate)

JSON Schema

Details

no schema with key or ref "https://json-schema.org/draft/2020-12/schema"