api-and-interface-design

To design stable APIs and prevent breaking changes, use a contract-first framework that enforces typed inputs, consistent error semantics, and additive, backward-compatible evolution for public interfaces.

Contract-first design for REST and GraphQL is defining typed inputs, outputs, and error semantics before implementation to enforce clear module boundaries and component props across teams.

You can evolve APIs safely by following safe evolution guidelines that prefer additive changes and establish clear deprecation paths, ensuring backward compatibility for existing module boundaries.

You need typed inputs and outputs for module boundaries when establishing clear component contracts across teams to prevent misuse and ensure consistent interface design.

Yes, this API design framework applies to both REST and GraphQL endpoints, enforcing consistent error handling and typed contracts for public interfaces and module boundaries.

The best way to handle error semantics in public interfaces is to enforce consistent error handling across all module boundaries and component contracts as part of your stable API design.