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# FreeCAD MCP
Control FreeCAD from Claude Desktop and other MCP clients. Create and edit models,
run Python scripts, inspect documents, and run FEM analyses.
## Demo
Design a flange:
See [more demos and examples](docs/examples.md) for a toy car, modelling from a
2D drawing, and agent integrations.
## Quick start
You need FreeCAD and [uv / uvx](https://docs.astral.sh/uv/guides/tools/).
FreeCAD MCP has two components: an addon running inside FreeCAD and an MCP server
launched by your client.
### 1. Install and start the FreeCAD addon
```bash
git clone https://github.com/neka-nat/freecad-mcp.git
cd freecad-mcp
```
Copy `addon/FreeCADMCP` into your [FreeCAD addon directory](docs/installation.md#addon-directory),
then restart FreeCAD. Select the **MCP Addon** workbench and click
**Start RPC Server** in the **FreeCAD MCP** toolbar.
See the [installation guide](docs/installation.md) for platform-specific commands
and screenshots.
### 2. Connect Claude Desktop
Add the following entry to `claude_desktop_config.json`:
```json
{
"mcpServers": {
"freecad": {
"command": "uvx",
"args": ["freecad-mcp"]
}
}
}
```
Restart Claude Desktop to load the configuration, keep FreeCAD open with its RPC
server running, and ask Claude to create a model. Connections use `localhost` by
default.
## Documentation
| Guide | Contents |
| --- | --- |
| [Installation](docs/installation.md) | Addon directories, setup screenshots, running from source |
| [Configuration](docs/configuration.md) | Auto-start, text feedback, remote connections |
| [Tools](docs/tools.md) | Available tools, screenshots, FEM analysis |
| [Code execution](docs/execution.md) | GUI execution, background jobs, headless scripts, timeout troubleshooting |
| [Demos and examples](docs/examples.md) | Design demos, FEM example, ADK and LangChain integrations |
## Contributors
<a href="https://github.com/neka-nat/freecad-mcp/graphs/contributors">
<img src="https://contrib.rocks/image?repo=neka-nat/freecad-mcp" />
</a>
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