How does the skill handle complex validation logic?

It provides patterns for using .refine() for simple checks and .superRefine() for more complex, multi-field validations and custom issue reporting.

What are the major syntax changes in Zod 4?

Zod 4 promotes top-level validators like z.email() and z.uuid() instead of chaining them, and uses a unified 'error' parameter for custom error messages.

Does this skill help with form validation?

Yes, it provides specific implementation patterns for React Hook Form using the zodResolver to ensure client-side type safety.

Can Zod 4 handle data type conversion?

Yes, it includes built-in support for coercion using z.coerce, which allows you to automatically convert inputs like strings to numbers or dates.

Zod 4 Schema Validation

Name: Zod 4 Schema Validation
Author: prowler-cloud

byprowler-cloud

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12,795

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API Development

Streamlines the creation, migration, and implementation of Zod version 4 schemas for robust TypeScript data validation.

The Zod 4 skill provides specialized guidance for developers using the TypeScript-first schema declaration and validation library. It helps bridge the gap between Zod 3 and 4 by identifying breaking changes, implementing complex object schemas, and configuring advanced features like discriminated unions and transformations. Whether you are building API request adapters, environment variable validators, or client-side forms, this skill ensures your data parsing is type-safe, performant, and follows the latest Zod 4 best practices.

Key Features

01Migrates legacy Zod v3 patterns to modernized Zod v4 syntax

0212,795 GitHub stars

03Implements complex discriminated unions and object schemas

04Configures data coercion and type transformations during parsing

05Creates custom refinements and multi-field validation logic

06Integrates schema validation with React Hook Form and API layers

Use Cases

01Upgrading existing TypeScript projects from Zod 3 to version 4

02Defining strict validation for API request payloads and response objects

03Building type-safe forms with custom error messaging in React applications

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add prowler-cloud/prowler zod-4

For use in Claude.ai and ChatGPT

Download Skill