What problem does it solve?
This skill ensures API contracts stay in sync by defining inputs and outputs with type-safe schemas, reducing runtime errors and mismatches between client and server.
Core Features & Use Cases
- Contract-first validation: Define input/output DTOs with Zod and OpenAPI to prevent drift.
- Runtime safety: Validates and parses data at API boundaries, transforming it into trusted domain types.
- Documentation & integration: Generates OpenAPI docs and TypeScript types; integrates with Express, Next.js, or tRPC.
Use Case: When designing an API, apply contract-driven design to guarantee end-to-end type safety and robust error handling.
Quick Start
- Ensure Zod and OpenAPI tooling are available in your project.
- Create schemas like CreateUserSchema and wire them to endpoints with validators.
- Validate outgoing responses against a response schema to enforce consistent API shapes.