API Contract Sync Manager

Validate OpenAPI, Swagger, and GraphQL schemas match backend implementation. Detect breaking changes, generate TypeScript clients, and ensure API documentation stays synchronized. Use when working with API spec files (.yaml, .json, .graphql), reviewing API changes, generating frontend types, or validating endpoint implementations.

643stars55forksUpdated 2/17/2026

Web Development #openapi #api-contracts #api-documentation #graphql #code-validation #typescript

Security Assessment

Safe(100/100)

Security Score100/100

About API Contract Sync Manager

The API Contract Sync Manager is designed to ensure that API specifications and their implementations stay in sync, providing validation for OpenAPI, Swagger, and GraphQL schemas. This skill addresses common challenges in managing API specifications, including detecting breaking changes, validating API endpoints, and ensuring that the frontend and backend remain aligned. It ensures that changes in the API spec are correctly reflected in the backend code, making it easier to catch discrepancies between the documentation and implementation early in the development process.

FAQ

How does the API Contract Sync Manager validate OpenAPI and GraphQL schemas?

The skill validates OpenAPI/Swagger schemas by checking for correctness against OpenAPI 3.0/3.1 standards, ensuring endpoint descriptions, request/response schema completeness, and checking security definitions. For GraphQL, it validates the SDL, checks for schema stitching issues, and verifies resolver coverage.

Can this skill detect breaking changes in API specifications?

Yes, the skill compares two versions of an API spec to detect breaking changes such as removed endpoints, changed parameter types, or missing response properties. It also identifies non-breaking changes that are safe to deploy.

Is the API Contract Sync Manager compatible with all types of API frameworks?

This skill is primarily designed for REST APIs using frameworks like Express.js, FastAPI, Django, and Spring Boot, as well as GraphQL APIs. It cross-references API specs with actual code implementations in these environments.

What file formats are supported by the API Contract Sync Manager?

The skill supports OpenAPI and Swagger specification files in `.yaml` or `.json` formats and GraphQL schema files in `.graphql` or `.gql` formats.

Can the API Contract Sync Manager generate TypeScript clients from API specs?

Yes, the skill can generate TypeScript client code from API specification files, ensuring that frontend teams have the correct types for API interactions.