code-design-api

To design an API contract before coding, you define endpoints, data schemas, and versioning rules to align product goals with implementable interfaces. This prevents scope drift by documenting resources and error formats prior to implementation.

Yes, you can generate OpenAPI documents for REST endpoints and Protocol Buffers for gRPC. This schema generation codifies interfaces by producing complete specifications including request and response models for the selected protocol.

The best way to document API versioning and error handling is to codify them within interface schemas like OpenAPI or Protocol Buffers. Generating complete API contracts ensures design rationale for versioning and error formats is recorded before implementation.

Yes, API design applies to GraphQL, TRPC, REST, and gRPC endpoints. You can define resources and data shapes across these protocols, generating type schemas and specifications to codify the interfaces consistently.

A complete API design specification should include endpoints, request and response schemas, sample payloads, and design rationale for versioning and error handling. This guides implementation by codifying the entire interface contract.