A11ymcp
Web accessibility testing MCP server that analyzes URLs and HTML for WCAG 2.0/2.1/2.2 compliance using axe-core. Tools for color contrast, ARIA validation, and orientation lock detection.
Install A11ymcp
Install instructions vary — visit the GitHub repository for the latest install command. Most MCP servers follow one of three patterns: npx -y <package> for Node, uvx <package> for Python, or docker run <image> for containerized servers.
Use A11ymcp with Claude Code
Once the server is on your machine, register it with Claude Code so the agent can call it like any other tool. The general pattern is:
claude mcp add ronantakizawa-a11ymcp -- <install-command>After it's registered, run claude and ask anything that requires A11ymcp. Claude Code will negotiate the MCP handshake and surface the server's tools, prompts, and resources to the model automatically. See our Claude Code MCP guide for environment variables, scope flags, and credential handling.
What this server is for
A11ymcp sits in the developer tools category. It's community-maintained — check the repo's last-commit date and open issues before depending on it in production. The full description from the source list:
Web accessibility testing MCP server that analyzes URLs and HTML for WCAG 2.0/2.1/2.2 compliance using axe-core. Tools for color contrast, ARIA validation, and orientation lock detection.
FAQ
Is A11ymcp free?
Yes — every MCP server in the ClawHire directory is open-source or freely available. Some servers proxy to paid APIs (you supply your own keys), but the server itself is free.
Does it work with Claude Desktop / Cursor / Windsurf?
If a client speaks the Model Context Protocol, it can use this server. The transport (stdio vs SSE vs HTTP) needs to match what the client supports, but the server itself is client-agnostic.
How do I report a bug or contribute?
Open an issue or PR on the GitHub repository.
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