@ronantakizawa
基本信息
MCP server for testing accessibility on websites
使用下面的配置,将此服务器添加到你的 MCP 客户端。
{
"mcpServers": {
"a11y-accessibility": {
"command": "npx",
"args": [
"-y",
"a11y-mcp-server"
]
}
}
}Test a webpage for accessibility issues using Axe-core
Test an HTML string for accessibility issues
Get information about available accessibility rules with optional filtering
Check if a foreground and background color combination meets WCAG contrast requirements
Check if ARIA attributes are used correctly in HTML
Check if content forces a specific orientation
An MCP server that enables AI assistants like Claude to perform automated accessibility testing on web pages and HTML content using the Deque Axe-core library via Puppeteer.
Install globally with npm install -g a11y-mcp-server and run a11y-mcp-server. Integrate with Claude Desktop by adding the server to the MCP settings file (claude_desktop_config.json on macOS, or the equivalent on Windows/Linux) using the npx -y a11y-mcp-server command.
It integrates directly with AI assistants like Claude via the Model Context Protocol, allowing them to run Axe-core–based accessibility tests and interpret results conversationally.
No, this is an unofficial MCP server that uses the Deque Axe-core API. It is not affiliated with or maintained by Deque Labs.
The server requires Node.js and npm. It installs the packages `@modelcontextprotocol/sdk`, `puppeteer`, and `@axe-core/puppeteer`, which includes a headless Chromium browser.
You can test any public URL or an HTML string. Supported WCAG tags include “wcag2aa” and other Axe-core standard tags. The server also provides dedicated tools for color contrast analysis, ARIA validation, and orientation lock detection.
The server returns structured JSON containing violations with impact level, description, help URL, affected nodes, pass/incomplete/inapplicable counts, and test environment metadata.
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