zod-4

Define Zod 4 schemas with top-level validators for TypeScript data validation.

Updated Mar 25, 2026
One-click install
npx skills add https://github.com/zeshone/zesh-one-skills --skill zod-4-zeshone
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: zod-4
Source: https://github.com/zeshone/zesh-one-skills/tree/main/skills/frontend/zod-4
Command: npx skills add https://github.com/zeshone/zesh-one-skills --skill zod-4-zeshone

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Streamlines migrating from Zod v3 by providing clear guidance and patterns to define Zod 4 schemas that robustly validate TS data, reducing runtime errors and steep learning curves.

Core Features & Use Cases

  • Top-level validators: z.email(), z.uuid(), z.url() and other primitives align with Zod 4 recommendations.
  • Schema composition: object, array, union, discriminated unions, refinements, and transformations with strong type inference.
  • Practical integration: demonstrates safeParse usage, React Hook Form compatibility, and end-to-end validation scenarios in frontend and backend.

Quick Start

Install zod@beta if needed for v4 features, then import { z } from "zod" and begin defining and validating schemas in your TypeScript project.

Frequently Asked Questions about zod-4

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I define Zod 4 schemas using top-level validators like z.email?

Zod 4 schemas use top-level validators like z.email(), z.uuid(), and z.url() to define primitive types. You can compose these into object, array, and union schemas with strong type inference for robust TypeScript data validation.

What is the best way to validate API requests and form data in TypeScript?

Validating API requests and form data in TypeScript is best handled by defining Zod 4 schemas and applying safeParse usage. This approach provides robust runtime validation and strong type inference across frontend and backend scenarios.

Does Zod 4 work with React Hook Form for form validation?

Yes, Zod 4 integrates with React Hook Form for form data validation. You can define schemas using top-level validators and apply them to ensure robust end-to-end validation and safeParse compatibility in your frontend.

How do I migrate from Zod v3 to Zod 4 schemas?

Migrating from Zod v3 to Zod 4 involves adopting top-level validators like z.email() and z.uuid() instead of string-based formats. Install zod@beta to access v4 features and update your schema definitions for improved type inference.

Can I use discriminated unions and refinements in Zod 4 schema composition?

Yes, Zod 4 supports schema composition using discriminated unions, refinements, and transformations. These features allow you to build complex validation rules while maintaining strong type inference for your TypeScript models.

Why use safeParse instead of parse for TypeScript data validation?

Using safeParse for TypeScript data validation prevents runtime errors by returning a result object instead of throwing exceptions. This Zod 4 method ensures safe handling of invalid API request data and form submissions.