api-validation

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.