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valibot

Validate data with Valibot's modular, tree-shakable schema library.

Updated Apr 12, 2026
Search Tags:#typescript#validation#schema#library#pipe#valibot#bundle-size
One-click install
npx skills add https://github.com/gil00pita/lanify --skill valibot-gil00pita
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: valibot
Source: https://github.com/gil00pita/lanify/tree/main/.agents/skills/valibot
Command: npx skills add https://github.com/gil00pita/lanify --skill valibot-gil00pita

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Valibot provides a modular, tree-shakable validation library for minimal bundle size, addressing the challenge of heavy runtime validators in client apps.

Core Features & Use Cases

  • Modular primitives (strings, numbers, objects, arrays) with a pipe system for validation and transformation.
  • Type inference, optional/nullable handling, and support for unions, discriminated unions, and advanced validations.
  • Use cases include lightweight form validation in web apps, API input validation, and compile-time-friendly TypeScript schemas.

Quick Start

Install valibot and start validating a sample object with a small, type-safe schema.

Frequently Asked Questions about valibot

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

FAQPage Schema
How do I validate API inputs in TypeScript without increasing bundle size?▼

Validate API inputs using a modular, tree-shakable TypeScript schema library to minimize bundle size. It enforces modular imports and a pipe-based validation workflow, ensuring lightweight, type-safe processing for frontend apps and backends.

What is pipe-based schema validation and how does it handle transformations?▼

Pipe-based schema validation uses modular primitives like strings, numbers, and objects within a pipe system to execute sequential validation and transformation. This mechanism provides rich type inference while handling optional, nullable, and union data types.

Does this modular validation approach work for lightweight web form validation?▼

Yes, this modular validation approach is ideal for lightweight form validation in web apps. Its tree-shakable design ensures that only the specific schema primitives you import are bundled, keeping the runtime footprint small.

What's the best way to enforce type-safe config data validation in lean applications?▼

The best way to enforce type-safe config data validation in lean applications is using a tree-shakable schema library. It offers compile-time-friendly TypeScript schemas with advanced validations, keeping your application footprint minimal.

When should I avoid heavy runtime validators for TypeScript schemas?▼

You should avoid heavy runtime validators when building lean frontend apps or backends where bundle size is critical. Switching to a tree-shakable, modular validation library prevents heavy runtime bloat by only bundling required primitives.

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