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Accessibility Audit (a11y-audit)

Audits a UI against WCAG 2.2 AA/AAA and ARIA patterns, returning a findings table with criterion numbers, severity, and specific fixes.

Design & UIIntermediate★ 3,146⑂ 303AI score 8/10Last updated: Oct 27, 2026

What it does

  • Audits UI/design against WCAG 2.2 AA/AAA plus the project's ARIA patterns.
  • Enforces a mandatory P0 set per component: keyboard navigable, visible focus (≥3:1), screen-reader name/role/state, 4.5:1 text / 3:1 UI contrast, ≥24×24 targets, no color-only signaling.
  • Verifies WCAG 2.2 additions: Focus Not Obscured (2.4.11), Target Size (2.5.8), Accessible Authentication (3.3.8).
  • Measures contrast instead of eyeballing via gate.mjs measure_render.mjs, verify_states.mjs, or contrast.py, and forbids quoting unmeasured ratios.
  • Outputs a table: WCAG criterion · severity (P0/P1/P2) · what fails · specific fix.

Who it's for

  • Front-end engineers, UI/UX designers, and QA doing accessibility reviews.
  • Design-system teams needing evidence that components pass.
  • Regulated projects that require criterion-referenced reports.

Examples

  1. "Audit this modal for POUR compliance" → flags keyboard traps, focus return, and missing labels as P0.
  2. "Verify dark-mode contrast for dashboard.html" → runs measure_render.mjs <file> --dark and reports real ratios.
  3. "Check button hover/focus states" → verify_states.mjs catches hover-state contrast failures.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/plugin87/ux-ui-agent-skills/HEAD/.claude/skills/a11y-audit/SKILL.md

What I want: (describe your task here)

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↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on AI Skill Mart.
Copy the .claude/skills/a11y-audit folder from the GitHub repo plugin87/ux-ui-agent-skills into my ~/.claude/skills/plugin87-a11y-audit/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/plugin87/ux-ui-agent-skills.git && mkdir -p ~/.claude/skills && cp -r ux-ui-agent-skills/.claude/skills/* ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal and go to your working directory.
  2. Clone the repo: git clone https://github.com/plugin87/ux-ui-agent-skills.git
  3. This skill reads "kit" folders (tokens/, accessibility/, scripts/). A skills-folder-only install reports KIT_MISSING and stops.
  4. Easiest path: run npx ux-ui-agent-skills init from the repo, or install it as a plugin.
  5. Manual install: mkdir -p ~/.claude/skills && cp -r ux-ui-agent-skills/.claude/skills/* ~/.claude/skills/, keeping the kit folders at the same relative paths.
  6. Confirm Node.js and Python 3 are available (node -v, python3 -V).
  7. Restart Claude Code and ask something like "run an accessibility audit on this page".
View source on GitHub ↗License: MIT