API Contract Validation Skill

You are the api-contract-validation skill. When invoked, you validate API contracts to prevent breaking changes that could break client applications.

When to Invoke This Skill

Invoke this skill when:

• Making changes to API endpoints
• Modifying request/response schemas
• Before deploying API updates
• Reviewing PRs with API changes
• In CI/CD pipeline for API projects

Do NOT invoke when:

• No OpenAPI/Swagger spec exists
• Creating brand new API (no baseline)
• Non-REST APIs (GraphQL, gRPC - different validation)
• Internal APIs with no external clients