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a11ymcp

ronantakizawa/a11ymcp

A11y MCP is an MCP (Model Context Protocol) server that gives LLMs access to web accessibility testing APIs.

Install

npx -y a11y-mcp-server

Client configuration

{
  "mcpServers": {
    "a11y-accessibility": {
      "command": "npx",
      "args": [
        "-y",
        "a11y-mcp-server"
      ]
    }
  }
}
GitHub stars
4
Category
Legal & Compliance, Developer Tools
License
MIT
Updated
Oct 6, 2026

About a11ymcp

This server uses the Deque Axe-core API and Puppeteer to allow LLMs to analyze web content for WCAG compliance and identify accessibility issues.

Features

  • Test web pages: Test any public URL for accessibility issues with customizable viewport dimensions

  • Test HTML snippets: Test raw HTML strings for accessibility issues

  • WCAG compliance testing: Check content against various WCAG standards (2.0, 2.1, 2.2)

  • Customizable tests: Specify which accessibility tags/standards to test against

  • Rule exploration: Get information about available accessibility rules

  • Color contrast analysis: Check color combinations for WCAG compliance

  • ARIA validation: Test proper usage of ARIA attributes

  • Orientation lock detection: Identify content that forces specific screen orientations

Tools (6)

  • test_accessibility

    Tests a URL for accessibility issues.

  • test_html_string

    Tests an HTML string for accessibility issues.

  • get_rules

    Get information about available accessibility rules with optional filtering.

  • check_color_contrast

    Check if a foreground and background color combination meets WCAG contrast requirements.

  • check_aria_attributes

    Check if ARIA attributes are used correctly in HTML.

  • check_orientation_lock

    Check if content forces a specific orientation.

Details on this page are taken from the project's README. Open README

Supported clients

Clients mentioned in this server's README:

View all
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