Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add punkadillo/figma-code-composer --skill web-component-designgit clone --depth 1 https://github.com/punkadillo/figma-code-composerWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/punkadillo/figma-code-composer/web-component-design)<a href="https://agentmods.dev/skills/punkadillo/figma-code-composer/web-component-design"><img src="https://agentmods.dev/badge/skills/punkadillo/figma-code-composer/web-component-design/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/punkadillo/figma-code-composer/web-component-design"><img src="https://agentmods.dev/badge/skills/punkadillo/figma-code-composer/web-component-design.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00045 | $0.01799 |
| Opus 5 | $0.00023 | $0.00899 |
| Sonnet 5 | $0.00009 | $0.00360 |
| Haiku 4.5 | $0.00005 | $0.00180 |
Grade A, and why
web-component-design scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 272 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Web Component Design
Build reusable, maintainable UI components using modern frameworks with clean composition patterns and styling approaches.
When to Use This Skill
- Designing reusable component libraries or design systems
- Implementing complex component composition patterns
- Choosing and applying CSS-in-JS solutions
- Building accessible, responsive UI components
- Creating consistent component APIs across a codebase
- Refactoring legacy components into modern patterns
- Implementing compound components or render props
Core Concepts
1. Component Composition Patterns
Compound Components: Related components that work together
// Usage
<Select value={value} onChange={setValue}>
<Select.Trigger>Choose option</Select.Trigger>
<Select.Options>
<Select.Option value="a">Option A</Select.Option>
<Select.Option value="b">Option B</Select.Option>
</Select.Options>
</Select>
Render Props: Delegate rendering to parent
<DataFetcher url="/api/users">
{({ data, loading, error }) =>
loading ? <Spinner /> : <UserList users={data} />
}
</DataFetcher>
Slots (Vue/Svelte): Named content injection points
<template>
<Card>
<template #header>Title</template>
<template #content>Body text</template>
<template #footer><Button>Action</Button></template>
</Card>
</template>
2. CSS-in-JS Approaches
| Solution | Approach | Best For |
|---|---|---|
| Tailwind CSS | Utility classes | Rapid prototyping, design systems |
| CSS Modules | Scoped CSS files | Existing CSS, gradual adoption |
| styled-components | Template literals | React, dynamic styling |
| Emotion | Object/template styles | Flexible, SSR-friendly |
| Vanilla Extract | Zero-runtime | Performance-critical apps |
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 5d ago First seen · 272 lines · 45 tokens per session scan A a7978f5e9e3f
web-component-design is a skill published in the GitHub repository punkadillo/figma-code-composer (3 stars, last pushed 20d ago), licensed MIT. It adds 45 tokens to every session and 1,799 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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