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validating-schema-basics

Detect deprecated Zod v3 patterns in TypeScript projects for v4 compatibility.

Updated Nov 21, 2025
Search Tags:#compatibility#migration#patterns#zod#v4
One-click install
npx skills add https://github.com/djankies/claude-configs --skill validating-schema-basics
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: validating-schema-basics
Source: https://github.com/djankies/claude-configs/tree/main/zod-4/skills/validating-schema-basics
Command: npx skills add https://github.com/djankies/claude-configs --skill validating-schema-basics

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps identify Zod v3 patterns that break in v4 and ensures adherence to v4 patterns, including string formats, error customization, and schema composition.

Core Features & Use Cases

  • Detect deprecated string formats and improper merges.
  • Verify correct error customization syntax and schema relations.
  • Promote safe, reusable schema patterns (extend, not merge).

Quick Start

Scan a codebase for deprecated Zod v3 patterns and replace with v4-compliant patterns.

Frequently Asked Questions about validating-schema-basics

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

FAQPage Schema
How do I check if my Zod v3 code is compatible with v4?▼

Zod v4 compatibility requires updating deprecated v3 patterns like string formats, merge usage, and refinement syntax. This Skill scans TypeScript projects to identify breaking patterns and provides migration guidance for safe v4 adoption.

What Zod v3 patterns break in v4?▼

Common breaking changes include string format replacements, unified error handling syntax, removal of merge in favor of extend, and refinement architecture changes. This Skill detects these patterns across TS/TSX files.

How do I migrate Zod schemas from v3 to v4?▼

Migration involves replacing deprecated string formats, updating error customization syntax, using extend instead of merge for schema composition, and refactoring refinement calls. This Skill provides actionable remediation steps for each pattern.

Can I use Zod v4 patterns in existing TypeScript projects?▼

Yes. This Skill verifies v4 pattern adherence by checking string formats, error handling, schema relations, and refinement usage across your codebase, ensuring safe reusable schema patterns.

What's the best way to ensure safe schema composition in Zod v4?▼

Use extend instead of merge for schema composition to follow v4 patterns safely. This Skill promotes reusable, maintainable schema architecture by detecting improper merges and guiding extend adoption.

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