CAD Compare

Overview

CAD Compare is a Model Context Protocol server that compares STEP CAD files locally, identifying whether they are identical, moved, or different, and reporting what has changed. Any MCP-compatible AI assistant can call CAD Compare's tools directly, letting the model decide when to use them during a conversation or agent run.

It runs locally on your machine via the npm package cad-compare-mcp, which speaks MCP over stdio. Install it with npx -y cad-compare-mcp. The current release is v0.2.1. You'll need an API Key to authenticate.

CAD Compare is listed under File System on mcp.site and works with MCP clients including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed, and others. If you maintain CAD Compare for cad-compare.com, you can claim this listing to verify ownership, earn the Verified badge, and keep the details current.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "cad_compare": {
      "command": "npx",
      "args": [
        "-y",
        "cad-compare-mcp"
      ]
    }
  }
}