Google CrUX MCP vs Roast My Design System

In-depth architectural comparison of the Google CrUX MCP and Roast My Design System 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 Google CrUX 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).
• Primary tools included: get_core_web_vitals, compare_form_factors, compare_origin_vs_url.

Explore Google CrUX MCP Details

R

Choose Roast My Design System 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 Roast My Design System Details

Feature & Specification Comparison

Specification	Google CrUX MCP Developer Tools	R Roast My Design System Developer Tools
Summary	Real-user Core Web Vitals from the Chrome UX Report (CrUX) API for any origin or URL.	Audit your Design System and serve your Agent the rules that keep AI-written UI on-system.
Category & Scope	Developer Tools	Developer Tools

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": {
    "google-crux-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-google-crux@latest"
      ]
    }
  }
}

{
  "mcpServers": {
    "roast-my-design-system-2": {
      "command": "npx",
      "args": [
        "-y",
        "shadcn"
      ]
    }
  }
}

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