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FreeCAD MCP(Model Context Protocol) server
| Date | Stars |
|---|---|
| 2026-07-31 | 1540 |
| 2026-08-03 | 1591 |
| 2026-08-06 | 1591 |
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[](https://mseep.ai/app/neka-nat-freecad-mcp)
# FreeCAD MCP
This repository is a FreeCAD MCP that allows you to control FreeCAD from Claude Desktop.
## Demo
### Design a flange
### Design a toy car
### Design a part from 2D drawing
#### Input 2D drawing
#### Demo
This is the conversation history.
https://claude.ai/share/7b48fd60-68ba-46fb-bb21-2fbb17399b48
## Install addon
FreeCAD Addon directory is
* Windows: `%APPDATA%\FreeCAD\Mod\`
* Mac:
* FreeCAD 1.1: `~/Library/Application\ Support/FreeCAD/v1-1/Mod/`
* FreeCAD 1.0: `~/Library/Application\ Support/FreeCAD/v1-0/Mod/`
* Linux:
* Ubuntu: `~/.FreeCAD/Mod/` or `~/snap/freecad/common/Mod/` (if you install FreeCAD from snap)
* Debian: `~/.local/share/FreeCAD/Mod`
* Arch / CachyOS (FreeCAD 1.1 from `extra/freecad`): `~/.local/share/FreeCAD/v1-1/Mod/`
Please put `addon/FreeCADMCP` directory to the addon directory.
```bash
git clone https://github.com/neka-nat/freecad-mcp.git
cd freecad-mcp
# For Linux (Ubuntu/Debian)
mkdir -p ~/.FreeCAD/Mod/
cp -r addon/FreeCADMCP ~/.FreeCAD/Mod/
# For Linux (Arch/CachyOS, FreeCAD 1.1 from extra/freecad)
mkdir -p ~/.local/share/FreeCAD/v1-1/Mod/
cp -r addon/FreeCADMCP ~/.local/share/FreeCAD/v1-1/Mod/
# For macOS (FreeCAD 1.1)
mkdir -p ~/Library/Application\ Support/FreeCAD/v1-1/Mod/
cp -r addon/FreeCADMCP ~/Library/Application\ Support/FreeCAD/v1-1/Mod/
```
When you install addon, you need to restart FreeCAD.
You can select "MCP Addon" from Workbench list and use it.
And you can start RPC server by "Start RPC Server" command in "FreeCAD MCP" toolbar.
### Auto-Start RPC Server
By default, the RPC server must be started manually each time FreeCAD opens. To start it automatically:
1. Open the **FreeCAD MCP** menu (switch to the MCP Addon workbench first)
2. Check **Auto-Start Server**
The setting is saved to `freecad_mcp_settings.json` and persists across sessions. On the next FreeCAD launch, the RPC server will start automatically once the application finishes loading.
You can disable it at any time by unchecking **Auto-Start Server** in the same menu.
## Setting up Claude Desktop
Pre-installation of the [uvx](https://docs.astral.sh/uv/guides/tools/) is required.
And you need to edit Claude Desktop config file, `claude_desktop_config.json`.
For user.
```json
{
"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.
```json
{
"mcpServers": {
"freecad": {
"command": "uvx",
"args": [
"freecad-mcp",
"--only-text-feedback"
]
}
}
}
```
Screenshots can also be controlled per tool call instead of globally: every tool that returns a screenshot accepts an optional `include_screenshot` parameter (pass `false` to get text-only feedback, e.g. for analytical scripts or intermediate steps) and an optional `view_name` parameter to orient the screenshot ("Isometric" by default, or "Front", "Top", "Right", etc.). The `--only-text-feedback` flag always wins: when it is set, no screenshots are returned regardless of `include_screenshot`.
For developer.
First, you need clone this repository.
```bash
git clone https://github.com/neka-nat/freecad-mcp.git
```
```json
{
"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 maExcerpt of 6,614 characters
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Would you bet a product on this? Bounded 0–100 and slow moving.
matched fp:acb12190d13576ca, topic:mcp, desc:model context protocol