OpenAPI Contract Comparison
Compare two OpenAPI 3 JSON documents for endpoint and contract changes.
Both documents are compared in your browser; no API specification is uploaded.
Using OpenAPI Contract Comparison for open banking
Compare two OpenAPI 3 JSON documents for endpoint and contract changes.
Sandbox example and expected result
Load the sandbox example to see a removed GET endpoint and a changed response schema.
Limitations and troubleshooting
This is a structural comparison, not a complete compatibility validator. References are not fetched or resolved. Review every changed operation and shared component before upgrading.
Where your input is processed
Both documents are compared in your browser; no API specification is uploaded. Use synthetic test data.
Maintained by OpenFinanceTools. Guidance updated 23 October 2026. Testing and editorial approach