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JoseCortezz25
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zod-4

Define and validate TypeScript data structures with Zod 4 schemas.

4|Updated May 10, 2025
Search Tags:#typescript#validation#schema#zod#forms#parsing#unions
One-click install
npx skills add https://github.com/JoseCortezz25/template-starter-nextjs --skill zod-4-josecortezz25
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: zod-4
Source: https://github.com/JoseCortezz25/template-starter-nextjs/tree/main/.opencode/skills/zod-4
Command: npx skills add https://github.com/JoseCortezz25/template-starter-nextjs --skill zod-4-josecortezz25

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Zod 4 introduces breaking changes from v3 and provides new validators and APIs that improve type-safe validation in TypeScript projects, helping teams migrate smoothly while preserving runtime guarantees.

Core Features & Use Cases

  • Top-level validators like z.email(), z.uuid(), and z.url() simplify common data validations without verbose schemas.
  • Rich schema constructs including objects, arrays, records, unions, discriminated unions, and transforms enable expressive, type-safe data schemas.
  • Error handling, refinements, and default values improve user feedback, data integrity, and resilience across forms and API validation.
  • Seamless integration with form libraries (e.g., React Hook Form) and server-side validation patterns for robust front- and back-end data validation.
  • Use case: define a user schema with id, email, and role, validate incoming payloads, and infer TypeScript types automatically.

Quick Start

Validate a sample payload against a Zod 4 schema to ensure the shape and constraints.

Frequently Asked Questions about zod-4

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

FAQPage Schema
How do I validate TypeScript data structures using Zod 4?▼

Zod 4 top-level validators like z.email(), z.uuid(), and z.url() simplify common data validations without verbose schemas, while rich constructs like unions and transforms enable expressive, type-safe data schema design.

How do I migrate schemas and handle breaking changes in Zod 4?▼

Zod 4 handles error reporting, refinements, and default values to improve user feedback and data integrity, providing robust validation patterns for forms and API payloads across client and server boundaries.

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

You can define a user schema with id, email, and role in Zod 4, validate incoming API payloads against it, and automatically infer TypeScript types to ensure data shape and constraints.

What is the best way to handle discriminated unions and transforms in Zod 4?▼

Zod 4 introduces top-level validators like z.email() and z.uuid() that simplify common validations without verbose schemas, alongside rich constructs for objects, arrays, records, unions, and transforms.

Why does Zod 4 use top-level validators like z.email() instead of string schemas?▼

Zod 4 provides well-structured schema library references, examples, and patterns for handling common validation scenarios, including error handling, refinements, and default values for resilience across forms and APIs.

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