How to use the Web Component Design agent skill

What is an agent skill and what does this one do?

An agent skill is a folder of instructions that an AI agent can load when a task matches the skill's description. This one is defined by a SKILL.md file and supporting reference files.

When the skill is active, the agent follows its guidance when you ask it to build or refactor user interface components. It applies patterns such as compound components, render props, and slots (in Vue and Svelte), suggests styling approaches like Tailwind, CSS Modules, or styled-components, and designs component props in a consistent way.

• Compound components: related parts that share state, such as a Select with Trigger and Option children
• Render props: the parent delegates rendering to a function passed as children
• Slots: named content injection points in Vue and Svelte
• Consistent component APIs, such as semantic prop names like isLoading instead of loading
• Reference guidance on accessibility patterns (for example a modal dialog) and CSS styling choices

Install the web-component-design skill

Download the skill ZIP from this page and unzip it. Then place the web-component-design folder in one of two locations, depending on how you want to use it:

Personal use across projects: put it in ~/.claude/skills/.

Single project: put it in the project's .claude/skills/ folder so it applies to that repository.

You can also upload the ZIP in the Claude apps under Settings → Capabilities → Skills.

Trigger the skill with natural requests

You do not need a special command. The skill's description covers building UI component libraries, designing component APIs, and implementing frontend design systems, so ask in those terms. Name the framework so the agent picks the right examples.

Good requests look like this: asking for a reusable Button in React with variant and size props, asking for a Tabs component in Vue built with provide and inject, or asking to refactor a legacy Svelte component to use Svelte 5 runes.

• Build a reusable Dialog component in React that follows accessible modal patterns
• Design the props API for a shared Card component in our Vue design system
• Refactor this older Svelte component to use $props and $derived

Examples of what the agent produces

The skill includes a Quick Start that builds a React Button using Tailwind with class-variance-authority, forwarded refs, and an isLoading prop. It also shows a React Accordion built with context, a Vue 3 tabs pattern using provide and inject, and a Svelte 5 button using $props and snippets.

Expect output that follows these conventions rather than a single fixed template. Check the generated code against your project's own linting, types, and styling setup before you merge it.

What you need and safety notes

The skill lists no requirements. It does not run scripts and does not use the network, according to its listing. The guidance assumes you already have a React, Vue, or Svelte project, and the examples use packages such as class-variance-authority and React, which your project must provide if you use them.

Because it runs no scripts and makes no network calls, the main risk is the code the agent writes. Review component code for accessibility, performance, and styling choices before committing it.

• Requires: nothing listed by the skill itself
• Runs scripts: no
• Uses network: no

Tips for better results

Give the agent your framework, styling approach, and existing conventions in the same request. The skill covers several options, so naming your choice avoids a generic answer.

For accessibility-sensitive components such as dialogs, ask the agent to follow the accessibility reference explicitly. Known common issues in the skill include prop explosion, style conflicts, re-render cascades, and accessibility gaps, so ask for a review against these.

• Name the framework and styling tool, for example React with Tailwind or Vue with scoped CSS
• Ask for a props interface first, then the implementation
• Ask the agent to test with keyboard navigation and a screen reader before shipping
• Prefer composition over adding more props when a component grows