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 flitzrrr/frontend-design-skills --skill component-patternsgit clone --depth 1 https://github.com/flitzrrr/frontend-design-skillsWrote 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/flitzrrr/frontend-design-skills/component-patterns)<a href="https://agentmods.dev/skills/flitzrrr/frontend-design-skills/component-patterns"><img src="https://agentmods.dev/badge/skills/flitzrrr/frontend-design-skills/component-patterns/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/flitzrrr/frontend-design-skills/component-patterns"><img src="https://agentmods.dev/badge/skills/flitzrrr/frontend-design-skills/component-patterns.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 | $0.00053 | $0.01441 |
| Opus 5.5 | $0.00021 | $0.00576 |
| Sonnet 5.5 | $0.00011 | $0.00288 |
| Haiku 4.5 | $0.00005 | $0.00144 |
Grade A, and why
component-patterns 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 1mo 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 — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Component-Patterns
Modern UI component patterns for web applications. Component selection, composition, theming, and token systems following current standards (21st.dev SDK, Tailwind, Radix UI).
Scope
Use this skill when:
- You are designing or selecting UI components
- You are building a design token system
- You are implementing theming (dark/light/custom)
- You are planning compound components or variant systems
- You are designing form architectures
- You are defining responsive component strategies
Principles
1. Composition over Inheritance
Build components by assembling small, specialized parts. Props for configuration, children for content, slots for variation.
2. Server-First, Client Where Needed
Server Components as the default. Client Components only for interactivity (state, event handlers, browser APIs).
3. Token-Based Theming
Design tokens (CSS Custom Properties) control all visual aspects. No hardcoding of colors, spacing, or font sizes.
4. Accessibility as Architecture
ARIA roles, keyboard navigation, and focus management are part of the component definition, not an afterthought.
5. Composable Primitives
Base primitives (Button, Input, Text, Box) are unstyled and maximally flexible. Design system components build on top of them.
Rules
Component Structure
- DO: Each component as a single file with a clear export. One component = one responsibility.
- DO: Explicitly type the props interface (TypeScript). Zod schemas for validated inputs.
- DO: Compound components for complex UI elements:
<Card> <Card.Header /> <Card.Body /> <Card.Footer /> </Card> - DO: Variants with class-variance-authority (cva) instead of conditional classes.
- DON'T: Components with more than 10 props. Split when responsibilities grow too many.
- DON'T: Runtime CSS-in-JS. Tailwind CSS or CSS Modules for static styles.
- DON'T: Div soup. Use semantic HTML elements (section, article, nav, header, footer, main).
What ships with it
2 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.
- 1mo ago First seen · 128 lines · 53 tokens per session scan A 85c6ed2dd164
component-patterns is a skill published in the GitHub repository flitzrrr/frontend-design-skills (9 stars, last pushed 6mo ago), licensed MIT. It adds 53 tokens to every session and 1,441 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-31.
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