zod

Enforce Zod schema best practices for safe parsing and type inference.

Updated Mar 26, 2026
One-click install
npx skills add https://github.com/moughamir/justwaitit-review --skill zod-moughamir
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: zod
Source: https://github.com/moughamir/justwaitit-review/tree/main/.agents/skills/zod
Command: npx skills add https://github.com/moughamir/justwaitit-review --skill zod-moughamir

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Zod schema code often drifts from best practices, causing type-unsafe validation, unclear error UX, and production bugs when parsing real user and API data.

Core Features & Use Cases

  • Schema boundary hardening: validate inputs early with safeParse, parse JSON only after schema validation, and avoid trusting unvalidated data.
  • Type-safety patterns: prefer z.infer for types, use z.unknown() instead of z.any(), and apply strict TypeScript + correct input vs output typing for transforms.
  • Better validation ergonomics: collect and display all issues, preserve error locations with issue.path, and improve form rendering with flatten().
  • Practical schema composition: use enums for fixed values, strict vs strip for object keys, and composition helpers like extend, pick/omit, partial, intersection, pipe, preprocess, and z.lazy.

Quick Start

Use the zod skill to review and fix your Zod schemas so they validate safely, infer correct types, and produce field-level errors your UI can display cleanly.

Frequently Asked Questions about zod

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

FAQPage Schema
How do I display field-level form errors from Zod schema validation?

To display field-level form errors from Zod validation, preserve error locations using issue.path and flatten the results with flatten(), which maps issues directly to form fields for actionable UI rendering.

What's the best way to validate external API inputs safely in TypeScript?

The best way to validate external API inputs is using safeParse instead of parse to avoid throwing exceptions, parsing JSON only after schema validation, and treating all external data as untrusted at the boundary.

Why should I use z.unknown instead of z.any in TypeScript schemas?

Using z.unknown instead of z.any in TypeScript schemas enforces strict type-safety by requiring explicit narrowing before access, whereas z.any bypasses validation entirely and introduces type-unsafe risks into your application.

How do I handle input vs output types when using transforms in Zod?

Handling transforms in Zod requires applying strict TypeScript typing and using z.infer to correctly distinguish between the original input type and the transformed output type, ensuring accurate type inference across schema boundaries.

Can I compose complex validation schemas using Zod's object helpers?

Yes, you can compose complex validation schemas using Zod helpers like extend, pick/omit, partial, intersection, pipe, preprocess, and z.lazy, allowing flexible schema composition for enums and strict or stripped object keys.