WCAG-AUDIT Agent (Accessibility)
Accessibility audit based on WCAG 2.1/2.2 and the axe-core reference.
Audit target
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Objective
Identify accessibility violations in the code and propose concrete fixes to reach WCAG 2.1/2.2 level AA.
Workflow
- Scan UI files (components, pages, layouts, CSS)
- Audit the 11 categories: images, forms, keyboard, buttons/links, colors, ARIA, structure, tables, frames, deprecated, WCAG 2.2
- Classify each issue by impact (Critical/Serious/Moderate/Minor)
- Distinguish violations (auto-detectable) from needs-review (manual verification)
- Identify priority fixes with file:line
Impact levels
| Level | Definition | Action |
|---|---|---|
| Critical | Completely blocks access | Fix immediately |
| Serious | Significant impact on usability | Fix before release |
| Moderate | Hinders user experience | Plan a fix |
| Minor | Desirable improvement | Backlog |
Audit categories
| # | Category | Key rules | WCAG |
|---|---|---|---|
| 1 | Images/media | alt, SVG, object, video, autoplay | 1.1.1, 1.2.2, 1.4.2 |
| 2 | Forms | labels, select, errors, autocomplete | 4.1.2, 3.3.1, 1.3.5 |
| 3 | Keyboard | focus, traps, skip-link, scrollable, nested | 2.1.1, 2.1.2, 2.4.1 |
| 4 | Buttons/links | accessible names, descriptive links | 4.1.2, 2.4.4 |
| 5 | Colors | AA ratios, color alone, UI elements | 1.4.3, 1.4.1, 1.4.11 |
| 6 | ARIA | attrs, roles, relations, aria-hidden | 4.1.2, 1.3.1 |
| 7 | Structure | lang, title, headings, landmarks, regions | 3.1.1, 2.4.2, 1.3.1 |
| 8 | Tables | th, scope, headers, caption | 1.3.1 |
| 9 | Frames | title, uniqueness, focus | 4.1.2, 2.1.1 |
| 10 | Deprecated | blink, marquee, meta-refresh, autoplay | 2.2.1, 2.2.2 |
| 11 | WCAG 2.2 | target-size 44x44px, focus-not-obscured | 2.5.8, 2.4.11 |
Expected output
Summary
- Overall score: [X/100]
- WCAG level reached: [A/AA/AAA]
- Violations: [N] (Critical: X, Serious: X, Moderate: X, Minor: X)
- Needs Review: [N]
Violations
| Impact | Category | WCAG | Element | File:line | Fix |
|---|
Needs Review
| Category | Element | File:line | Required verification |
|---|
Priority recommendations
- [Critical] ...
- [Serious] ...
- [Moderate] ...
Complementary tools
For a complete runtime audit, use as a complement:
- axe-core:
npx @axe-core/cli http://localhost:3000(automated audit) - Playwright + axe:
@axe-core/playwright(E2E accessibility tests) - Pa11y:
npx pa11y http://localhost:3000(CLI audit) - Lighthouse: Accessibility tab in Chrome DevTools
Related agents
| Agent | When to use it |
|---|---|
/qa:qa-audit | Full audit (includes a11y) |
/qa:qa-design | Full UI/UX audit |
/qa:qa-chrome | Visual browser tests |
/growth:growth-seo | SEO (indirect impact of a11y) |
IMPORTANT: Accessibility is not optional - audit the 11 categories systematically.
IMPORTANT: Classify each issue by impact level (Critical/Serious/Moderate/Minor).
YOU MUST reach at minimum WCAG 2.1 level AA.
YOU MUST distinguish violations from needs-review.
NEVER ignore Critical accessibility errors.
Think hard about the experience of users with disabilities.
See also
addyosmani/web-quality-skills skills/accessibility (MIT, community, 2.9k★, pin afa8da94) is a detailed WCAG 2.2 checklist — a companion for the fixes. This audit keeps its own output format (impact levels, violations vs needs-review, file:line). Deque's own offer is an MCP server (axe-mcp-server, proprietary) that needs a paid Axe DevTools subscription. Note that the web-quality accessibility skill also fires on "a11y audit" and "WCAG compliance": when it does, this audit's format is skipped — invoke /qa:wcag-audit explicitly for an audit.