api-and-interface-design

Contract-first API design defines the interface surface before implementation, ensuring stable, well-documented boundaries. Use it when designing REST or GraphQL endpoints, module contracts, or frontend-backend boundaries to prevent component misuse.

Design stable REST and GraphQL endpoints by defining clear input/output types, consistent error semantics, and validation at system boundaries. This contract-first approach prevents misuse and ensures frontend-backend boundaries remain stable across teams.

Enforce validation and consistent error semantics at system boundaries by adopting a contract-first design approach for your APIs and module interfaces. This ensures errors are handled uniformly and inputs are validated before reaching core logic.

Yes, you can use interface design to inform your database schema shape. By defining stable API contracts and module boundaries first, you establish the data structures that the database schema needs to support.

Define module boundaries and contracts by drafting a contract-first interface that specifies endpoints, input/output types, and error formats. This creates a stable, well-documented surface that prevents misuse by enforcing clear software component interactions.