A11Y Checker
The A11Y Checker automatically identifies accessibility issues in web content, ensuring websites are usable by everyone.
Install on your platform
We auto-selected Claude Code based on this skill’s supported platforms.
Run in terminal (recommended)
claude mcp add a11y-checker npx -- -y @trustedskills/a11y-checker
Or manually add to ~/.claude/settings.json
{
"mcpServers": {
"a11y-checker": {
"command": "npx",
"args": [
"-y",
"@trustedskills/a11y-checker"
]
}
}
}Requires Claude Code (claude CLI). Run claude --version to verify your install.
About This Skill
What it does
The a11y-checker skill analyzes HTML code to identify accessibility issues. It helps ensure web pages are usable by people with disabilities, conforming to WCAG guidelines. This includes detecting missing alternative text for images, improper heading structure, and insufficient color contrast.
When to use it
- Auditing existing websites: Check a website's current HTML for common accessibility problems before making changes.
- Validating new code: Integrate the skill into your development workflow to catch accessibility issues early on.
- Troubleshooting user complaints: Investigate specific accessibility concerns raised by users of a web application.
- Ensuring compliance: Verify that a website meets required accessibility standards for legal or regulatory reasons.
Key capabilities
- HTML Accessibility Analysis
- WCAG Compliance Checking
- Image Alt Text Detection
- Heading Structure Validation
- Color Contrast Evaluation
Example prompts
- "Analyze this HTML snippet for accessibility issues: [paste HTML code]"
- "Check the heading structure of this webpage and suggest improvements."
- "Does this image have appropriate alternative text? [provide link to image]"
Tips & gotchas
The skill requires valid HTML as input. It's best used with complete HTML documents or well-formed snippets for accurate results.
Tags
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Security Audits
| Gen Agent Trust Hub | Pass |
| Socket | Pass |
| Snyk | Pass |
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