breaking-change-detector

Use this skill to help API producers and consumers find actual or potential breaking changes — REST/OpenAPI, GraphQL, gRPC/Protobuf, or consumer-driven contracts — and apply SemVer and deprecation discipline. Trigger on "will this change break our API consumers", "how do I detect breaking changes in our OpenAPI spec", "deprecate this field safely", "set up contract testing between services", "diff our GraphQL schema", or similar API-compatibility questions. Standalone — no prior audit is required. Primarily advisory — recommends which tool (oasdiff, Buf breaking, GraphQL Inspector, Pact) fits the API type and how to wire it into CI — but may run a diff/contract-test command when the user explicitly authorizes it; it never executes anything on its own initiative.