OpenAPI Contract & Breaking Change Monitor

Monitor public OpenAPI specs for removed paths, operations, operation IDs, and security schemes.

OpenAPI Breaking Change Detector

bmiller1009/openapi-breaking-change-detector

Compare two OpenAPI/Swagger specs and identify breaking and non-breaking API contract changes between them.

Monitor OpenAPI JSON/YAML specifications and output structured breaking/non-breaking API change records.

OpenAPI Spec Diff Auditor

junipr/openapi-spec-diff-auditor

Diff OpenAPI specs for breaking changes, added or removed endpoints, required parameters, response drift, and schema compatibility. by default.

OpenAPI JSON Diff - API Change Checker

fluffy_ingot/openapi-change-preflight

Compare OpenAPI 3.0/3.1 JSON before a release. Flag removed endpoints, newly required inputs and selected type or enum changes. Get HTML, CSV and JSON reports for review workflows.

Monitor public OpenAPI and Swagger specifications for structural changes. Get persistent baselines plus review-oriented records for removed operations, new required inputs, response/schema changes, and additive updates.

API contract monitor for OpenAPI 3.0/3.1. Catch consumer-breaking changes before release: compare an HTTPS spec to a baseline and export Dataset findings, SUMMARY, SARIF, and JUnit for CI or schedules.

Compare two OpenAPI 3.0/3.1 specs (JSON or YAML) and emit per-endpoint / per-operation / per-schema change rows with a `breaking` flag. Pairs with the api-response-delta-monitor.

API Changelog Generator - Breaking Changes & API Diff Detection

imapp/api-changelog-generator

Detect breaking changes in your API automatically. Compare OpenAPI specs or Git commits to generate structured changelogs. Subscribe to webhook notifications for breaking change alerts.

Audit OpenAPI and Swagger specifications for unsecured operations, unsafe server URLs, weak auth schemes and missing security responses.