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Overview

FreeCAD MCP (Model Control Protocol) is a server-client interface that allows users to interact with FreeCAD, enabling command execution and information retrieval about the current FreeCAD document and scene.

To use FreeCAD MCP, configure the server using a JSON format, connect to the server via a socket, and send commands to retrieve scene information or execute scripts.

  • Retrieve detailed scene information including document properties and object details. - Execute arbitrary Python scripts within the FreeCAD environment. - Supports multiple operating systems with specific configuration examples.
  1. Automating 3D modeling tasks in FreeCAD.
  2. Retrieving information about complex models for analysis.
  3. Running custom scripts to modify or create objects programmatically.

Add to your AI client

Use these steps to connect Freecad in Cursor, Claude, VS Code, and other MCP-compatible apps. The same JSON appears in the Use with menu above for one-click copy.

Cursor

Add this to your .cursor/mcp.json file in your project root, then restart Cursor.

.cursor/mcp.json

{
  "mcpServers": {
    "freecad-bonninr": {
      "command": "/usr/bin/python3",
      "args": [
        "/home/USER/.FreeCAD/Mod/freecad_mcp/src/freecad_bridge.py"
      ]
    }
  }
}

Claude Desktop

Add this server entry to the mcpServers object in your Claude Desktop config, then restart the app.

~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows)

{
  "mcpServers": {
    "freecad-bonninr": {
      "command": "/usr/bin/python3",
      "args": [
        "/home/USER/.FreeCAD/Mod/freecad_mcp/src/freecad_bridge.py"
      ]
    }
  }
}

Claude Code

Add this to your project's .mcp.json file. Claude Code will detect it automatically.

.mcp.json (project root)

{
  "mcpServers": {
    "freecad-bonninr": {
      "command": "/usr/bin/python3",
      "args": [
        "/home/USER/.FreeCAD/Mod/freecad_mcp/src/freecad_bridge.py"
      ]
    }
  }
}

VS Code (Copilot)

Add this to your .vscode/mcp.json file. Requires the GitHub Copilot extension with MCP support enabled.

.vscode/mcp.json

{
  "servers": {
    "freecad-bonninr": {
      "type": "stdio",
      "command": "/usr/bin/python3",
      "args": [
        "/home/USER/.FreeCAD/Mod/freecad_mcp/src/freecad_bridge.py"
      ]
    }
  }
}

Windsurf

Add this to your Windsurf MCP config file, then restart Windsurf.

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "freecad-bonninr": {
      "command": "/usr/bin/python3",
      "args": [
        "/home/USER/.FreeCAD/Mod/freecad_mcp/src/freecad_bridge.py"
      ]
    }
  }
}

Cline

Open Cline settings, navigate to MCP Servers, and add this server configuration.

Cline MCP Settings (via UI)

{
  "mcpServers": {
    "freecad-bonninr": {
      "command": "/usr/bin/python3",
      "args": [
        "/home/USER/.FreeCAD/Mod/freecad_mcp/src/freecad_bridge.py"
      ]
    }
  }
}

FAQ

What is the purpose of FreeCAD MCP?

It simplifies the interaction with FreeCAD through a server-client architecture.

How do I install FreeCAD MCP?

Clone the repository, place the `freecad_mcp` directory in your FreeCAD modules directory, and restart FreeCAD.

Is FreeCAD MCP cross-platform?

Yes, it supports Windows, Linux, and macOS with specific configuration instructions.

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