Web Accessibility-Testing MCP Server (A11y MCP)
https://github.com/user-attachments/assets/316c6d44-e677-433e-b4d5-63630b4bab2b
A11y MCP is an MCP (Model Context Protocol) server that gives LLMs access to web accessibility testing APIs.
This server uses the Deque Axe-core API and Puppeteer to allow LLMs to analyze web content for WCAG compliance and identify accessibility issues.
Note: This is not an official MCP server from Deque Labs.
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







