A11Y Toolkit vs Calm MCP

In-depth architectural comparison of the A11Y Toolkit and Calm MCP MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

Choose A11Y Toolkit when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore A11Y Toolkit Details

Choose Calm MCP when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Calm MCP Details

Feature & Specification Comparison

Specification	A11Y Toolkit Developer Tools	Calm MCP Developer Tools
Summary	The accessibility layer for AI coding agents: audit, fix, document and watch - WCAG 2.2.	MCP server giving coding agents a call-graph-aware, hash-verified view of a codebase, not grep.
Category & Scope	Developer Tools	Developer Tools
Quality signal

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "a11y-toolkit": {
      "command": "uvx",
      "args": [
        "--from"
      ]
    }
  }
}

{
  "mcpServers": {
    "calm-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@eilodon/calm-mcp"
      ]
    }
  }
}

Related MCP Server Comparisons