zod-4

Migrate Zod v3 schemas to v4 with updated patterns and validation guidance.

Updated Aug 27, 2026
One-click install
npx skills add https://github.com/oversio/personal-finances --skill zod-4-oversio
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: zod-4
Source: https://github.com/oversio/personal-finances/tree/main/skills/zod-4
Command: npx skills add https://github.com/oversio/personal-finances --skill zod-4-oversio

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Zod v4 schemas often require updated patterns and migration guidance to ensure robust validation in TypeScript apps. This Skill provides patterns and best practices for crafting and migrating schemas using Zod v4, including common primitives, objects, unions, refinements, and error handling.

Core Features & Use Cases

  • Migration guidance: migrate schemas from Zod v3 to v4 APIs with updated equivalents.
  • Pattern catalog: common schema patterns updated for v4, including primitives, objects, unions, and refinements.
  • Practical usage: examples for validation, parsing, and error handling in real-world codebases.

Quick Start

Define a simple user schema using z.object({ id: z.string(), email: z.string().email() }) and validate a sample object using parse.

Frequently Asked Questions about zod-4

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

FAQPage Schema
How do I migrate Zod schemas from v3 to v4 in TypeScript?

Migrating Zod schemas from v3 to v4 involves updating to new API equivalents for primitives, objects, and unions. This Skill provides migration guidance and updated patterns to ensure your TypeScript validation logic remains compatible and robust during the transition.

What is the best way to define object and union schema validation patterns in Zod v4?

The best way to define validation patterns in Zod v4 is using the updated API for primitives, objects, unions, and refinements. This Skill provides a catalog of these patterns to help you structure and validate data reliably across your TypeScript codebase.

How do I handle parsing errors and validation flows in Zod v4?

Handling parsing errors in Zod v4 requires using the updated validation flows and error handling patterns provided by the library. This Skill details how to implement clean error handling for forms, APIs, and data parsers in real-world TypeScript applications.

Can I use Zod v4 schema validation for parsing API data and forms in TypeScript?

Yes, Zod v4 schema validation is scoped for software developers updating forms, APIs, and data parsers. This Skill provides practical usage examples and patterns for defining validation flows to reliably parse and validate data in TypeScript codebases.

What are the limitations or breaking changes when updating to Zod v4?

Updating to Zod v4 introduces breaking changes from v3 APIs that require updated schema patterns and migration guidance. This Skill helps navigate these limitations by providing updated equivalents for primitives, objects, unions, and refinements to ensure compatibility.