zod - Zod v4 Schema Validation and Best Practices Guide
Provides guidance, patterns, and best practices for schema validation, parsing, error handling, and type inference using Zod v4 in TypeScript.
Tags
Updated: 2026-09-19Capabilities
Typical Inputs
Typical Outputs
What this skill does
- Validate runtime data schemas
- Parse untrusted boundary inputs
- Handle custom validation errors
- Infer TypeScript static types
- Transform and refine schemas
- Migrate schemas from v3 to v4
- Test schemas with Jest or Vitest
Inputs
- TypeScript source code
- Boundary input data
- Zod schema definitions
Outputs
- Parsed typed data
- Validation error structures
- Derived TypeScript type definitions
Requirements
- TypeScript ^5.5 or later
- Zod ^4.3.0 or later