Check A11y

Q: What is a Claude Code skill and how does the Check A11y skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Check A11y is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Product category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Product · Sub-category: accessibility · Last updated: 2026-05-21

type:audit

Perform accessibility audit on web pages. Use when users ask to check accessibility, audit WCAG compliance, verify ARIA usage, check color contrast, audit keyboard navigation, or analyze screen reader compatibility. Detects ARIA issues, focus problems, contrast issues, and semantic HTML violations.

From the source SKILL.md

Perform accessibility audit on web pages for WCAG 2.1 compliance.

What this skill does

Check A11y is a community-contributed Claude Code skill in the accessibility sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/check-a11y/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when users ask to check accessibility, audit WCAG compliance, verify ARIA usage, check color contrast, audit keyboard navigation, or analyze screen reader compatibility. Detects ARIA issues, focus problems, contrast issues, and semantic HTML violations.

Who uses this skill

The Check A11y Claude Code skill is built for product managers, product designers, and cross-functional teams planning, shipping, and measuring product features. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 116,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/check-a11y
curl -L https://claudskills.com/skills/check-a11y/SKILL.md \
  -o ~/.claude/skills/check-a11y/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/check-a11y/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/check-a11y/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\check-a11y\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Check A11y Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/check-a11y/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Check A11y skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Check A11y skill?

Use Check A11y when your Claude Code task falls under the Product category — specifically in the accessibility area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Check A11y" or describe the task and let Claude pick). Browse related skills at /category/product/.

What is a Claude Code skill and how does the Check A11y skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Check A11y is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Product category. Learn more at /learn/what-is-a-claude-skill/.

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

ClaudSkills. (2026). Check A11y [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/check-a11y/

BibTeX

@misc{check-a11y-2026,
  author    = {ClaudSkills},
  title     = {Check A11y [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/check-a11y/}
}

Embed this skill

Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →

Badge

[![ClaudSkills](https://claudskills.com/badge/check-a11y.svg)](https://claudskills.com/skills/check-a11y/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

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Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

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