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From backend-core-tools
Verify API contract changes for compatibility, versioning, and migration readiness
How this skill is triggered — by the user, by Claude, or both
Slash command
/backend-core-tools:api-contract-checkThe summary Claude sees in its skill listing — used to decide when to auto-load this skill
For API changes, provide:
For API changes, provide:
Be strict on backward compatibility unless explicitly waived.
npx claudepluginhub ghostmxvlshn/mxstart-ai-marketplace --plugin backend-core-toolsDetects breaking changes in REST, GraphQL, and gRPC API contracts. Compares OpenAPI schemas and protobuf defs to baselines, classifies severity, validates semver, runs Pact tests, generates reports.
Design and review API contracts covering auth, pagination, versioning, errors, compatibility, and OpenAPI/GraphQL shape. Steps through evidence gathering, boundary definition, compatibility checks, semantics validation, and test planning.
Guides API evolution with additive change rules, breaking change taxonomy, and Postel's Law to ensure existing clients work without modification.