Claude Skill

a11y-audit

Audit a UI or design against WCAG 2.2 AA/AAA and ARIA patterns, returning criterion-referenced findings with severity and specific fixes. Use when the user wants an accessibility check, contrast verification, keyboard/screen-reader review, or wants to confirm a component meets PO

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plugin87/ux-ui-agent-skills 1406 145 forks MIT Updated 11d ago

Part of plugin87/ux-ui-agent-skills — 18 skills

Install

skills CLI npx skills add https://github.com/plugin87/ux-ui-agent-skills/tree/main/.claude/skills/a11y-audit

Claude Code

claude plugin marketplace add https://llmmart.ai/marketplace.json && claude plugin install plugin87-ux-ui-agent-skills@llmmart

Git git clone https://github.com/plugin87/ux-ui-agent-skills.git

The skills CLI installs just this skill, for any of its supported agents. Claude Code installs the whole plugin87/ux-ui-agent-skills collection as a plugin from our marketplace. Git is the plain clone.

Skill manifest

Skill: Accessibility Audit

Evaluate against WCAG 2.2 and the project's ARIA patterns.

Steps

Read accessibility/wcag-checklist.md (POUR-organized, P0/P1/P2) and accessibility/aria-patterns.md.
Check the mandatory P0 set per component: keyboard navigable, focus visible (≥3:1), screen-reader name/role/state, contrast (4.5:1 text / 3:1 UI), target size ≥24×24, no color-only signaling.
Verify WCAG 2.2 additions: Focus Not Obscured (2.4.11), Target Size (2.5.8), Accessible Authentication (3.3.8).
Contrast — measure, don't eyeball. For rendered HTML, RUN the real-render gates and report their actual output (CLAUDE.md → Verification Protocol): node scripts/measure_render.mjs <file> [--dark] (every text element) AND node scripts/verify_states.mjs <file> [--dark] (every interactive element in default/hover/focus — catches hover-state failures). For loose color pairs, python3 scripts/contrast.py "<fg>" "<bg>". Never state a ratio you did not measure.
Check reduced-motion handling (taste/motion-choreography.md).

Output

A findings table: WCAG criterion (e.g. 1.4.3) · severity (P0/P1/P2) · what fails · specific fix. Confirm passes explicitly. Accessibility may never be traded for aesthetics.

Files (ux-ui-agent-skills)

SKILL.md 1.6 KB

---
name: a11y-audit
description: Audit a UI or design against WCAG 2.2 AA/AAA and ARIA patterns, returning criterion-referenced findings with severity and specific fixes. Use when the user wants an accessibility check, contrast verification, keyboard/screen-reader review, or wants to confirm a component meets POUR.
invocation: model
---

# Skill: Accessibility Audit

Evaluate against WCAG 2.2 and the project's ARIA patterns.

## Steps
1. Read `accessibility/wcag-checklist.md` (POUR-organized, P0/P1/P2) and `accessibility/aria-patterns.md`.
2. Check the mandatory P0 set per component: keyboard navigable, focus visible (≥3:1), screen-reader name/role/state, contrast (4.5:1 text / 3:1 UI), target size ≥24×24, no color-only signaling.
3. Verify WCAG 2.2 additions: Focus Not Obscured (2.4.11), Target Size (2.5.8), Accessible Authentication (3.3.8).
4. **Contrast — measure, don't eyeball.** For rendered HTML, RUN the real-render gates and report their actual output (CLAUDE.md → Verification Protocol): `node scripts/measure_render.mjs <file> [--dark]` (every text element) AND `node scripts/verify_states.mjs <file> [--dark]` (every interactive element in default/hover/focus — catches hover-state failures). For loose color pairs, `python3 scripts/contrast.py "<fg>" "<bg>"`. Never state a ratio you did not measure.
5. Check reduced-motion handling (`taste/motion-choreography.md`).

## Output
A findings table: WCAG criterion (e.g. 1.4.3) · severity (P0/P1/P2) · what fails · specific fix. Confirm passes explicitly. Accessibility may never be traded for aesthetics.