How do I install building-components?

Run `npx skills add https://github.com/vercel/components.build --skill building-components` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does building-components support?

building-components works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Is building-components free to use?

Yes. building-components is free to install and use. It is available from the open Skills registry published by vercel.

Frontend

building-components▌

Name: building-components
Availability: InStock
Author: vercel

vercel/components.build · updated Apr 8, 2026

$npx skills add https://github.com/vercel/components.build --skill building-components

summary

Comprehensive guide for building modern, accessible, and composable UI components.

›Covers component taxonomy (primitives, components, blocks, templates), core design principles, and accessibility implementation including ARIA, keyboard navigation, and WCAG compliance
›Includes patterns for composable APIs, polymorphism, controlled/uncontrolled state, and the as-child pattern for flexible element composition
›Provides guidance on design tokens, theming systems, styling approaches, and u

skill.md

Building Components

When to use this skill

Use when the user is:

Building new UI components (primitives, components, blocks, templates)
Implementing accessibility features (ARIA, keyboard navigation, focus management)
Creating composable component APIs (slots, render props, controlled/uncontrolled state)
Setting up design tokens and theming systems
Publishing components to npm or a registry
Writing component documentation
Implementing polymorphism or as-child patterns
Working with data attributes for styling/state

References

definitions.mdx - Artifact taxonomy (primitives, components, blocks, templates)
principles.mdx - Core principles for component design
accessibility.mdx - ARIA, keyboard navigation, WCAG compliance
composition.mdx - Composable component patterns
as-child.mdx - The as-child pattern for element polymorphism
polymorphism.mdx - Polymorphic component patterns
types.mdx - TypeScript typing patterns for components
state.mdx - Controlled vs uncontrolled state management
data-attributes.mdx - Using data attributes for styling and state
design-tokens.mdx - Design token systems and theming
styling.mdx - Component styling approaches
registry.mdx - shadcn-style registry distribution
npm.mdx - Publishing components to npm
marketplaces.mdx - Component marketplace distribution
docs.mdx - Writing component documentation