In the same workflow: Webhook Tester and API Response Analyzer.

Response Schema Validator

Validate a JSON response (or any JSON data) against a JSON Schema. Paste the data and the schema; supports draft-07.

Valid

Related tools

Why use Response Schema Validator?

Contracts drift: mobile clients expect fields APIs no longer send. Validate a JSON payload against JSON Schema draft-07 to catch missing properties, wrong types, and enum violations before deploy, especially for public partner APIs.

Practical tips

  • Start with required fields only, then tighten optional properties gradually.
  • Keep schemas in version control next to OpenAPI or AsyncAPI docs.
  • Use JSON Diff on responses when schemas fail to spot unexpected removals.

Common questions

Which JSON Schema version?
Draft-07 as noted in-tool. Newer drafts may need feature checks in your validator library.
Does this validate GraphQL responses?
It validates arbitrary JSON. For GraphQL query syntax use GraphQL Query Validator.

About

Validate JSON against JSON Schema (draft-07). API response validator. Paste schema and payload. Free online.

Related tools

Used together

Next step

After response-schema-validator, continue with Webhook Tester to validate the next API or webhook layer.