Agent skill
web-design-guidelines
Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit design", "review UX", or "check my site against best practices". Focuses on visual design and interaction patterns. Do NOT use for performance audits (use core-web-vitals), SEO (use seo), or comprehensive site audits (use web-quality-audit).
Install this agent skill to your Project
npx add-skill https://github.com/tech-leads-club/agent-skills/tree/main/packages/skills-catalog/skills/(design)/web-design-guidelines
Metadata
Additional technical details for this skill
- author
- vercel
- version
- 1.0.0
- argument hint
- <file-or-pattern>
SKILL.md
Web Interface Guidelines
Review files for compliance with Web Interface Guidelines.
How It Works
- Read the guidelines from
#[[file:references/guideline.md]] - Read the specified files (or prompt user for files/pattern)
- Check against all rules in the guidelines
- Output findings in the terse
file:lineformat
Guidelines Reference
All rules and output format instructions are in:
#[[file:references/guideline.md]]
The guidelines cover:
- Accessibility (ARIA, semantic HTML, keyboard navigation)
- Focus states and keyboard interaction
- Forms (autocomplete, validation, labels)
- Animation (reduced motion, performance)
- Typography (proper characters, number formatting)
- Content handling (overflow, empty states)
- Images (dimensions, lazy loading)
- Performance (virtualization, DOM reads)
- Navigation & state (URL sync, deep linking)
- Touch & interaction (tap delays, safe areas)
- Dark mode & theming
- Locale & i18n
- Hydration safety
- Common anti-patterns to flag
Usage
When a user provides a file or pattern argument:
- Read the guidelines from
references/guideline.md - Read the specified files
- Apply all rules from the guidelines
- Output findings using the format specified in the guidelines
If no files specified, ask the user which files to review.
Output Format
Follow the format in the guidelines:
- Group findings by file
- Use
file:lineformat (VS Code clickable) - Terse, high signal-to-noise
- State issue + location
- Skip explanation unless fix is non-obvious
Recommended Agent Skills
Expand your agent's capabilities with these related and highly-rated skills.
seo
Optimize for search engine visibility and ranking. Use when asked to "improve SEO", "optimize for search", "fix meta tags", "add structured data", "sitemap optimization", or "search engine optimization". Do NOT use for accessibility (use web-accessibility), performance (use core-web-vitals), or comprehensive site audits covering multiple areas (use web-quality-audit).
web-quality-audit
Comprehensive web quality audit covering performance, accessibility, SEO, and best practices in a single review. Use when asked to "audit my site", "review web quality", "run lighthouse audit", "check page quality", or "optimize my website" across multiple areas at once. Orchestrates specialized skills for depth. Do NOT use for single-area audits — prefer core-web-vitals, web-accessibility, seo, or web-best-practices for focused work.
accessibility
Audit and improve web accessibility following WCAG 2.1 guidelines. Use when asked to "improve accessibility", "a11y audit", "WCAG compliance", "screen reader support", "keyboard navigation", or "make accessible". Do NOT use for SEO (use seo), performance (use core-web-vitals), or comprehensive site audits covering multiple areas (use web-quality-audit).
react-best-practices
React and Next.js performance optimization guidelines from Vercel Engineering. Use when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements. Do NOT use for component API architecture or composition patterns (use react-composition-patterns instead).
best-practices
Apply modern web development best practices for security, compatibility, and code quality. Use when asked to "apply best practices", "security audit", "modernize code", "code quality review", or "check for vulnerabilities". Do NOT use for accessibility (use web-accessibility), SEO (use seo), performance (use core-web-vitals), or comprehensive multi-area audits (use web-quality-audit).
perf-lighthouse
Run Lighthouse audits locally via CLI or Node API, parse and interpret reports, and set performance budgets. Use when measuring site performance, understanding Lighthouse scores, setting up budgets, or integrating audits into CI. Triggers on: lighthouse, run lighthouse, lighthouse score, performance audit, performance budget. Do NOT use for fixing specific performance issues (use perf-web-optimization or core-web-vitals) or Astro-specific optimization (use perf-astro).
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