Verwendung
- Installationsbefehl kopieren und das Quellpaket vor der Installation in der eigenen Agentenumgebung prüfen.
- Benötigte Werkzeuge, Zugangsdaten und Hosts im Original prüfen.
- Eingabe und gewünschtes Ergebnis beschreiben und die Ausgabe mit den Quellen abgleichen.
npx skills add https://github.com/alirezarezvani/claude-skills --skill a11y-auditVor dem Start
- Die Installation umfasst weder Modellabo noch API-Kontingent oder Dateizugriffsrechte.
- Sterne und Installationen zeigen Aktivität, keine unabhängige Qualitäts- oder Sicherheitsprüfung.
Originales Skill-Dokument
Aus dem Quell-Repository gerendert; Überschriften, Beispiele, Code, Tabellen, Links und Bilder bleiben erhalten.
Accessibility Audit
WCAG 2.2 Accessibility Audit and Remediation Skill
Description
The a11y-audit skill provides a complete accessibility audit pipeline for modern web applications. It implements a three-phase workflow -- Scan, Fix, Verify -- that identifies WCAG 2.2 Level A and AA violations, generates exact fix code per framework, and produces stakeholder-ready compliance reports.
For every violation it finds, it provides the precise before/after code fix tailored to your framework (React, Next.js, Vue, Angular, Svelte, or plain HTML).
What this skill does:
- Scans your codebase for every WCAG 2.2 Level A and AA violation, categorized by severity (Critical, Major, Minor)
- Fixes each violation with framework-specific before/after code patterns
- Verifies that fixes resolve the original violations and introduces no regressions
- Reports findings in a structured format suitable for developers, PMs, and compliance stakeholders
- Integrates into CI/CD pipelines to prevent accessibility regressions
Features
| Feature | Description |
|---|---|
| Full WCAG 2.2 Scan | Checks all Level A and AA success criteria across your codebase |
| Framework Detection | Auto-detects React, Next.js, Vue, Angular, Svelte, or plain HTML |
| Severity Classification | Categorizes each violation as Critical, Major, or Minor |
| Fix Code Generation | Produces before/after code diffs for every issue |
| Color Contrast Checker | Validates foreground/background pairs against AA and AAA ratios |
| Compliance Reporting | Generates stakeholder reports with pass/fail summaries |
| CI/CD Integration | GitHub Actions, GitLab CI, Azure DevOps pipeline configs |
| Keyboard Navigation Audit | Detects missing focus management and tab order issues |
| ARIA Validation | Checks for incorrect, redundant, or missing ARIA attributes |
Severity Definitions
| Severity | Definition | Example | SLA |
|---|---|---|---|
| Critical | Blocks access for entire user groups | Missing alt text, no keyboard access to navigation | Fix before release |
| Major | Significant barrier that degrades experience | Insufficient color contrast, missing form labels | Fix within current sprint |
| Minor | Usability issue that causes friction | Redundant ARIA roles, suboptimal heading hierarchy | Fix within next 2 sprints |
Usage
Quick Start
bash
# Scan entire project
python scripts/a11y_scanner.py /path/to/project
# Scan with JSON output for tooling
python scripts/a11y_scanner.py /path/to/project --json
# Check color contrast for specific values
python scripts/contrast_checker.py --fg "#777777" --bg "#ffffff"
# Check contrast across a CSS/Tailwind file
python scripts/contrast_checker.py --file /path/to/styles.cssSlash Command
/a11y-audit # Audit current project
/a11y-audit --scope src/ # Audit specific directory
/a11y-audit --fix # Audit and auto-apply fixes
/a11y-audit --report # Generate stakeholder report
/a11y-audit --ci # Output CI-compatible resultsThree-Phase Workflow
Phase 1: Scan -- Walk the source tree, detect framework, apply rule set.
bash
python scripts/a11y_scanner.py /path/to/project --format tablePhase 2: Fix -- Apply framework-specific fixes for each violation.
See references/framework-a11y-patterns.md for the complete fix patterns catalog.
Phase 3: Verify -- Re-run the scanner to confirm fixes and check for regressions.
bash
python scripts/a11y_scanner.py /path/to/project --baseline audit-baseline.jsonExample: React Component Audit
tsx
// BEFORE: src/components/ProductCard.tsx
function ProductCard({ product }) {
return (
<div onClick={() => navigate(`/product/${product.id}`)}>
<img src={product.image} />
<div style={{ color: '#aaa', fontSize: '12px' }}>{product.name}</div>
<span style={{ color: '#999' }}>${product.price}</span>
</div>
);
}| # | WCAG | Severity | Issue |
|---|---|---|---|
| 1 | 1.1.1 | Critical | <img> missing alt attribute |
| 2 | 2.1.1 | Critical | <div onClick> not keyboard accessible |
| 3 | 1.4.3 | Major | Color #aaa on white fails contrast (2.32:1, needs 4.5:1) |
| 4 | 1.4.3 | Major | Color #999 on white fails contrast (2.85:1, needs 4.5:1) |
| 5 | 4.1.2 | Major | Interactive element missing role and accessible name |
tsx
// AFTER: src/components/ProductCard.tsx
function ProductCard({ product }) {
return (
<a href={`/product/${product.id}`} className="product-card"
aria-label={`View ${product.name} - $${product.price}`}>
<img src={product.image} alt={product.imageAlt || product.name} />
<div style={{ color: '#595959', fontSize: '12px' }}>{product.name}</div>
<span style={{ color: '#767676' }}>${product.price}</span>
</a>
);
}See references/examples-by-framework.md for Vue, Angular, Next.js, and Svelte examples.
Tools Reference
a11y_scanner.py
Usage: python scripts/a11y_scanner.py <path> [options]
Options:
--json Output results as JSON
--format {table,csv} Output format (default: table)
--severity {critical,major,minor} Filter by minimum severity
--framework {react,vue,angular,svelte,html,auto} Force framework (default: auto)
--baseline FILE Compare against previous scan results
--report Generate stakeholder report
--output FILE Write results to file
--quiet Suppress output, exit code only
--ci CI mode: non-zero exit on critical issuescontrast_checker.py
Usage: python scripts/contrast_checker.py [options]
Options:
--fg COLOR Foreground color (hex)
--bg COLOR Background color (hex)
--file FILE Scan CSS file for color pairs
--tailwind DIR Scan directory for Tailwind color classes
--json Output results as JSON
--suggest Suggest accessible alternatives for failures
--level {aa,aaa} Target conformance level (default: aa)Common Pitfalls
| Pitfall | Correct Approach |
|---|---|
role="button" on a <div> | Use native <button> -- includes keyboard handling for free |
tabindex="0" on everything | Only interactive elements need focus; use native elements |
aria-label on non-interactive elements | Use aria-labelledby pointing to visible text |
display: none for screen reader hiding | Use .sr-only class instead |
| Color alone to convey meaning | Add icons, text labels, or patterns alongside color |
| Placeholder as only label | Always provide a visible <label> |
outline: none without replacement | Always provide a visible focus indicator via focus-visible |
Empty alt="" on informational images | Informational images need descriptive alt text |
| Skipping heading levels (h1 -> h3) | Heading levels must be sequential |
onClick without onKeyDown | Add keyboard support or prefer native elements |
Ignoring prefers-reduced-motion | Wrap animations in @media (prefers-reduced-motion: no-preference) |
Related Skills
| Skill | Relationship |
|---|---|
| senior-frontend | Frontend patterns used in a11y fixes |
| code-reviewer | Include a11y checks in code review workflows |
| senior-qa | Integration of a11y testing into QA processes |
| playwright-pro | Automated browser testing with accessibility assertions |
| epic-design | WCAG 2.1 AA compliant animations and scroll storytelling |
| tdd-guide | Test-driven development patterns for a11y test cases |
Reference Documentation
| Reference | Description |
|---|---|
| wcag-quick-ref.md | WCAG 2.2 Level A & AA criteria quick reference |
| wcag-22-new-criteria.md | New WCAG 2.2 success criteria (Focus Appearance, Target Size, etc.) |
| aria-patterns.md | ARIA patterns, keyboard interaction, and live regions |
| framework-a11y-patterns.md | Framework-specific fix patterns (React, Vue, Angular, Svelte, HTML) |
| color-contrast-guide.md | Color contrast checker details, Tailwind palette mapping, sr-only class |
| ci-cd-integration.md | GitHub Actions, GitLab CI, Azure DevOps, pre-commit hook configs |
| audit-report-template.md | Stakeholder-ready audit report template |
| testing-checklist.md | Manual testing checklist (keyboard, screen reader, visual, forms) |
| examples-by-framework.md | Full audit examples for Vue, Angular, Next.js, and Svelte |
