This is your runtime validation solution when you need TypeScript types and data validation in one place. Define a schema once with `z.object()` and friends, get automatic type inference with `z.infer`, and validate API payloads, form inputs, or environment variables at runtime. The `.safeParse()` method returns a result object instead of throwing, which keeps error handling clean. At 2kb gzipped with zero dependencies, it won't bloat your bundle. Note that this documents Zod 4.x, which has breaking changes from v3 around error customization and stricter number validation. Works especially well with tRPC, react-hook-form, and Prisma for end-to-end type safety.
- skills.sh installs
- 663
- GitHub stars
- 248
- last updated
- Aug 21, 2026
Install
$ npx -y skills add secondsky/claude-skills --skill zod --agent claude-codeInstalls into .claude/skills of the current project.
Files
Zod: TypeScript-First Schema Validation
Overview
Zod is a TypeScript-first validation library that enables developers to define schemas for validating data at runtime while automatically inferring static TypeScript types. With zero dependencies and a compact core (~5kb gzipped; ~1.9kb for zod/mini), Zod provides immutable, composable validation with comprehensive error handling.
Installation
bun add zod
# or
npm install zod
# or
pnpm add zod
# or
yarn add zod
Requirements:
- TypeScript v5.5+ with
"strict": trueintsconfig.json - Zod 4.x (4.4.x recommended;
z.codec()requires 4.1+)
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- Repository
- github.com/secondsky/claude-skills
- Categories
- Backend & APIs, Debugging
- First seen
- Jun 3, 2026
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