rest-graphql-contract

Designing REST and GraphQL API contracts involves defining resource schemas, versioning, pagination, and error handling to ensure standardized service surfaces and backward compatibility. This approach uses standardized patterns for resource naming and type definitions.

Maintaining backward compatibility when evolving an API schema requires implementing safe API evolution strategies. This ensures existing client integrations remain unbroken by applying consistent versioning patterns to REST endpoints and GraphQL schemas.

Standardizing error handling and pagination involves defining uniform error envelopes and efficient data retrieval patterns like cursors and DataLoaders. This ensures consistent API responses across both OpenAPI and GraphQL SDL implementations.

Yes, this approach supports generating OpenAPI specs and GraphQL SDL for existing services. It applies to the evolution of existing service surfaces, ensuring requirements for backward compatibility and standardized error modeling are satisfied.

You need to implement idempotency keys and cursor pagination in your API contract when building a new service or endpoint. Defining these patterns correctly from the start ensures safe data retrieval and prevents duplicate request processing.