Zod Schemas

Purpose

Generate Zod validation schemas that can be used both on the backend for validation and shared with the frontend for type-safe API contracts.

When to Use

• Creating reusable validation schemas
• Sharing schemas between backend and frontend
• Type-safe API contracts
• Runtime validation with TypeScript inference

What It Generates

Directory Structure

packages/shared-schemas/src/schemas/{feature}/
├── {entity}.schema.ts
├── index.ts

Patterns Enforced

Schema Reusability

• Common schemas (email, password, UUID) imported from shared
• Schemas composable via .pick(), .omit(), .extend()
• Transformations for data normalization

Type Inference

• z.infer<typeof schema> for TypeScript types
• Types can be exported to frontend

Error Messages

• Custom validation messages
• User-friendly error descriptions

Usage Example

/skill schema-zod --name=User --fields='email:email,password:password,name:string,isActive:boolean'

Related Files

• API DTO - Class-validator DTOs (alternative)
• API Controller - Controllers using schemas