What can you do with this server?

This server allows you to control FreeCAD remotely via Claude Desktop to create and manipulate 3D models and documents. You can: * Create new FreeCAD documents and manage existing ones * Create, edit, and delete various 3D objects (like boxes, cylinders, circles) * Set object properties including dimensions, placement, and color * Execute Python code within the FreeCAD environment * Insert parts from the FreeCAD parts library * Capture screenshots from standard viewpoints (Isometric, Front, Top) * List objects within documents and retrieve their properties * Access the parts library and get available parts list

Which integrations are available for this server?

Allows control of FreeCAD from Claude Desktop, enabling AI agents to interact with and manipulate CAD models and designs programmatically through FreeCAD's functionality.

How do I use freecad mcp?

1. Click on "Install Server". 2. Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state. 3. In the chat, type @ followed by the MCP server name and your instructions, e.g., "@freecad mcp create a simple flange with 6 bolt holes" That's it! The server will respond to your query, and you can continue using it as needed. Here is a step-by-step guide with screenshots.

FreeCAD MCP

This repository is a FreeCAD MCP that allows you to control FreeCAD from Claude Desktop.

Demo

Design a flange

demo

Design a toy car

demo

Design a part from 2D drawing

Input 2D drawing

input

Demo

demo

This is the conversation history. https://claude.ai/share/7b48fd60-68ba-46fb-bb21-2fbb17399b48

Related MCP server: FreeCAD MCP

Install addon

FreeCAD Addon directory is

Windows: %APPDATA%\FreeCAD\Mod\
Mac: ~/Library/Application\ Support/FreeCAD/Mod/
Linux:
- Ubuntu: ~/.FreeCAD/Mod/ or ~/snap/freecad/common/Mod/ (if you install FreeCAD from snap)
- Debian: ~/.local/share/FreeCAD/Mod

Please put addon/FreeCADMCP directory to the addon directory.

git clone https://github.com/neka-nat/freecad-mcp.git cd freecad-mcp cp -r addon/FreeCADMCP ~/.FreeCAD/Mod/

When you install addon, you need to restart FreeCAD. You can select "MCP Addon" from Workbench list and use it.

workbench_list

And you can start RPC server by "Start RPC Server" command in "FreeCAD MCP" toolbar.

start_rpc_server

Setting up Claude Desktop

Pre-installation of the uvx is required.

And you need to edit Claude Desktop config file, claude_desktop_config.json.

For user.

{ "mcpServers": { "freecad": { "command": "uvx", "args": [ "freecad-mcp" ] } } }

If you want to save token, you can set only_text_feedback to true and use only text feedback.

{ "mcpServers": { "freecad": { "command": "uvx", "args": [ "freecad-mcp", "--only-text-feedback" ] } } }

For developer. First, you need clone this repository.

git clone https://github.com/neka-nat/freecad-mcp.git

{ "mcpServers": { "freecad": { "command": "uv", "args": [ "--directory", "/path/to/freecad-mcp/", "run", "freecad-mcp" ] } } }

Remote Connections

By default the RPC server does not accept remote connections and listens on localhost. To control FreeCAD from another machine on your network:

1. Enable remote connections in FreeCAD

In the FreeCAD MCP toolbar:

Check Remote Connections — the RPC server will bind to 0.0.0.0 (all interfaces) on the next restart. For security reasons, it only accepts connections from the IP addresses or CIDR subnets specified in the Allowed IPs field. By default this is 127.0.0.1.
Click Configure Allowed IPs and enter a comma-separated list of IP addresses or CIDR subnets that are allowed to connect, e.g.:
192.168.1.100, 10.0.0.0/24
127.0.0.1 is always the default. Invalid entries are rejected with an error dialog. Restart the RPC server after changing these settings.