OpenAPI & JSON Schema Diff

Compare OpenAPI and JSON Schema specs to find breaking changes per operation.

Catch API contract regressions before they ship. Diff two OpenAPI or JSON Schema specs, surface breaking changes per operation, generate migration patches, and preview the downstream SDK impact — all in the browser.

  • Diff two OpenAPI or JSON Schema specs
  • Breaking-change detection per operation
  • Migration patch generation
  • SDK impact preview
  • Runs fully client-side
chayprabs/openapi-breaking-changesFull source code, issues, and releasesOpen →

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This tool is built in the open and shaped by feedback. If something feels off — or you want a feature — I read every message.