zod

Validate incoming data against Zod schemas with TypeScript type inference.

Updated May 20, 2026
One-click install
npx skills add https://github.com/Hollowvyn/cognipace-v2 --skill zod-hollowvyn
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: zod
Source: https://github.com/Hollowvyn/cognipace-v2/tree/main/.agents/skills/zod
Command: npx skills add https://github.com/Hollowvyn/cognipace-v2 --skill zod-hollowvyn

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Zod eliminates the risk of accepting malformed data by giving you a single source of truth for both runtime validation and TypeScript types, so your forms, APIs, and data boundaries stay consistent.

Core Features & Use Cases

  • Runtime validation + static type inference: define schemas once and reuse the inferred types across your codebase (e.g., request bodies, form inputs, DB-adjacent objects).
  • Composable schema building: create complex structures with objects, arrays, unions, intersections, discriminated unions, and reusable primitives.
  • Transformations and refined constraints: normalize inputs (trim, parse numbers/dates) and enforce custom rules with refine and superRefine, including object-level and async validations.
  • Ergonomic error handling: use parse/safeParse patterns and ZodError details (including flattening) to produce actionable validation feedback.
  • Integration-ready patterns: works naturally with typical app layers such as React form validation, tRPC inputs/outputs, Express middleware, and environment variable parsing.

Quick Start

Use the zod skill to validate incoming data against a Zod schema and automatically get a typed result when validation succeeds.

Frequently Asked Questions about zod

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

FAQPage Schema
How do I validate API request bodies with TypeScript type inference?

Schema validation with type inference works by defining a schema once and parsing incoming data, which automatically yields a typed result for safe downstream use across your codebase.

How do I handle asynchronous custom validation rules for data parsing?

Asynchronous custom validation rules for data parsing are handled using async refinement, allowing you to enforce complex custom constraints and object-level rules before accepting the parsed data.

What's the best way to parse environment variables safely in a TypeScript application?

Parsing environment variables safely in a TypeScript application is best achieved by defining a schema that validates the unknown values at your application boundary and infers the correct types.

Can I transform and normalize form inputs during runtime validation?

Yes, you can transform and normalize form inputs during runtime validation by applying schema transformations to trim strings or parse dates, alongside enforcing custom rules with refine methods.

Does schema validation support discriminated unions for complex object composition?

Schema validation supports discriminated unions for complex object composition, allowing you to build intricate structures from objects, arrays, intersections, and reusable primitives.

How do I return actionable validation errors from failed safeParse attempts?

Actionable validation errors from failed safeParse attempts are returned using ZodError details, which can be flattened to produce specific feedback identifying exactly which constraints were violated.