mcp‑axe

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A Model Context Protocol (MCP) plugin for automated accessibility testing using axe-core. It lets MCP‑aware clients (Claude Desktop, Cursor, etc.) or your terminal run:

• Single URL scans
• HTML string scans
• Batch URL scans
• Violation summarisation

All powered by Selenium under the hood.

📦 Installation

From PyPI

pip install mcp-axe

Requires Python 3.8+.

Local / Development

git clone https://github.com/manoj9788/mcp-axe.git
cd mcp-axe
python3 -m venv .venv && source .venv/bin/activate
pip install -e .[dev]

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🔧 Usage

MCP (JSON‑RPC) mode

For AI clients (e.g. Claude Desktop, Cursor, VS Code MCP extension), configure your <client>_config.json:

{
  "mcpServers": {
    "axe-a11y": {
      "command": "python3",
      "args": ["-m", "mcp_axe"],
      "cwd": "."
    }
  }
}

Once the MCP server is running,

you can prompt like scan https://manojkk.com for accessibility issues will invoke the scan-url tool.

you can invoke tools like:

• scan-url (params: { "url": "https://google.com" })
• scan-html (params: { "html": "<h1>Hello</h1>" })
• scan-batch (params: { "urls": ["https://a.com","https://b.com"] })
• summarise-violations (params: { "result": <axe result> })

MCP local dev mode

{
  "mcpServers": {
    "axe-a11y": {
      "command": "/path/to/.venv/bin/python",
      "args": ["-m", "mcp_axe"],
      "cwd": "/path/to/mcp-axe"
    }
  }
}

FastAPI REST mode (optional)

Expose HTTP endpoints via:

from mcp_axe.server import app  # FastAPI instance
import uvicorn

if __name__ == '__main__':
    uvicorn.run(app, host='0.0.0.0', port=9788, reload=True)

Then:

curl -X POST http://localhost:9788/scan/url -H 'Content-Type: application/json' \
  -d '{ "url": "https://google.com" }'

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🤝 Contributing

1. Fork the repo
2. Create a branch (git checkout -b feature/xyz)
3. Commit your changes
4. Open a PR

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📜 License

MIT