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 frankxai/claude-skills-library --skill web-design-expertgit clone --depth 1 https://github.com/frankxai/claude-skills-libraryWrote 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/frankxai/claude-skills-library/web-design-expert)<a href="https://agentmods.dev/skills/frankxai/claude-skills-library/web-design-expert"><img src="https://agentmods.dev/badge/skills/frankxai/claude-skills-library/web-design-expert/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/frankxai/claude-skills-library/web-design-expert"><img src="https://agentmods.dev/badge/skills/frankxai/claude-skills-library/web-design-expert.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 | $0.00048 | $0.04358 |
| Opus 5.5 | $0.00019 | $0.01743 |
| Sonnet 5.5 | $0.00010 | $0.00872 |
| Haiku 4.5 | $0.00005 | $0.00436 |
Grade A, and why
web-design-expert 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 — 666 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Web Design Expert Skill
Type: Design System & UX/UI Workflow Version: 1.0.0 Last Updated: 2025-11-07
Description
High-end web design team capabilities for creating exceptional user experiences. Combines visual design, UX research, accessibility, performance optimization, and rigorous testing protocols.
Core Competencies
1. Visual Design & Mockups
- Modern design systems (Tailwind, custom tokens)
- Typography hierarchy and readability
- Color theory and contrast ratios (WCAG 2.2 AA/AAA)
- Layout composition and white space
- Component design patterns
- Responsive design principles
- Animation and microinteraction design
2. User Experience (UX)
- User journey mapping
- Information architecture
- Conversion funnel optimization
- A/B test hypothesis and variant design
- Usability heuristics (Nielsen's 10)
- Mental models and user expectations
- Progressive disclosure patterns
- Cognitive load reduction
3. Accessibility (WCAG 2.2)
- Semantic HTML structure
- ARIA labels and roles
- Keyboard navigation
- Screen reader compatibility
- Focus management
- Color contrast (4.5:1 text, 3:1 UI)
- Touch target sizing (44x44px minimum)
- Alternative text and descriptions
- Motion reduction preferences
4. Performance Optimization
- Core Web Vitals (LCP, FID, CLS)
- Lighthouse score optimization
- Image optimization strategies
- Code splitting and lazy loading
- Bundle size management
- Caching strategies
- Critical rendering path
- Performance budgets
5. Testing & Quality Assurance
- Cross-browser testing (Chrome, Safari, Firefox, Edge)
- Device testing (iOS, Android, Desktop)
- Visual regression testing
- Screenshot comparison workflows
- Responsive design verification
- Touch interaction testing
- Load time testing (3G, 4G, WiFi)
Required MCP Integrations
Critical MCPs (Must Have)
1. Playwright MCP
Purpose: Visual testing, screenshots, browser automation Usage:
// Capture baseline screenshots
await playwright.screenshot({
url: 'https://frankx.ai',
selector: '#hero',
viewport: { width: 1920, height: 1080 }
})
// Test responsive design
await playwright.screenshot({
url: 'https://frankx.ai',
viewport: { width: 375, height: 812 } // iPhone 13
})
// Visual regression testing
await playwright.compareScreenshots({
before: 'baseline.png',
after: 'current.png'
})
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 · 666 lines · 48 tokens per session scan A 46016ca8e0f7
web-design-expert is a skill published in the GitHub repository frankxai/claude-skills-library (47 stars, last pushed yesterday), licensed MIT. It adds 48 tokens to every session and 4,358 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 2026-09-03.
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