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Accessibility Audit (a11y-audit)

Audits a UI or design against WCAG 2.2 AA/AAA and ARIA patterns, returning criterion-referenced findings with severity and concrete fixes.

Design & UIIntermediate★ 494⑂ 42AI score 8/10Last updated: Jun 22, 2026

What it does

  • Evaluates your interface against WCAG 2.2, including the 2.2 additions: Focus Not Obscured (2.4.11), Target Size (2.5.8), Accessible Authentication (3.3.8).
  • Runs a mandatory P0 checklist per component: keyboard navigability, visible focus (≥3:1), screen-reader name/role/state, 4.5:1 text and 3:1 UI contrast, ≥24×24 targets, no color-only signaling.
  • Measures contrast for real instead of guessing, using measure_render.mjs, verify_states.mjs (default/hover/focus) and contrast.py for loose color pairs.
  • Outputs a findings table: WCAG criterion · severity (P0/P1/P2) · what fails · specific fix, plus explicit passes.

Who it's for

  • Frontend engineers, UI designers, and QA testers shipping web or app interfaces.
  • Teams under accessibility compliance requirements (public sector, fintech, edtech).
  • Design-system maintainers running periodic a11y regression checks.

Example uses

  1. "Check whether this modal meets WCAG 2.2 AA" → focus trap, ESC handling, and measured contrast reported in a table.
  2. "Verify button hover contrast in dark mode" → runs verify_states.mjs <file> --dark across default/hover/focus states.
  3. "Is #7A7A7A text on white acceptable?" → contrast.py computes the ratio and suggests a compliant alternative.

· · · 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)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ 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 Claude 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 /tmp/ux-ui-agent-skills && mkdir -p ~/.claude/skills && cp -r /tmp/ux-ui-agent-skills/.claude/skills/a11y-audit ~/.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. Create the skills folder: mkdir -p ~/.claude/skills
  4. Copy the skill: cp -r ux-ui-agent-skills/.claude/skills/a11y-audit ~/.claude/skills/
  5. The skill references accessibility/, scripts/, and taste/ files from the repo — keep them in your project root or work inside the cloned repo.
  6. Make sure Node.js and Python 3 are installed for the measurement scripts (node -v, python3 -V).
  7. Restart Claude Code, then ask something like "run an accessibility audit on this screen" to trigger the skill.
View source on GitHub ↗