Provides tools to control FreeCAD, allowing creation and editing of 3D models, executing Python code, inserting parts from the parts library, and capturing views.
Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@freecad-mcp create a cube with side 10mm"
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.
This repository is a FreeCAD MCP that allows you to control FreeCAD from Claude Desktop.
This is the conversation history. https://claude.ai/share/7b48fd60-68ba-46fb-bb21-2fbb17399b48
Related MCP server: freecad-mcp
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.
And you can start RPC server by "Start RPC Server" command in "FreeCAD MCP" toolbar.
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"
]
}
}
}create_document: Create a new document in FreeCAD.
create_object: Create a new object in FreeCAD.
edit_object: Edit an object in FreeCAD.
delete_object: Delete an object in FreeCAD.
execute_code: Execute arbitrary Python code in FreeCAD.
insert_part_from_library: Insert a part from the parts library.
get_view: Get a screenshot of the active view.
get_objects: Get all objects in a document.
get_object: Get an object in a document.
get_parts_list: Get the list of parts in the parts library.
Made with contrib.rocks.
Create a new document in FreeCAD.
Args:
name: The name of the document to create.
Returns:
A message indicating the success or failure of the document creation.
Examples:
If you want to create a document named "MyDocument", you can use the following data.
```json
{
"name": "MyDocument"
}
```
Inputs: name (required).
Create a new object in FreeCAD. Object type is starts with "Part::" or "Draft::" or "PartDesign::" or "Fem::".
Args:
doc_name: The name of the document to create the object in.
obj_type: The type of the object to create (e.g. 'Part::Box', 'Part::Cylinder', 'Draft::Circle', 'PartDesign::Body', etc.).
obj_name: The name of the object to create.
obj_properties: The properties of the object to create.
Returns:
A message indicating the success or failure of the object creation and a screenshot of the object.
Examples:
If you want to create a cylinder with a height of 30 and a radius of 10, you can use the following data.
```json
{
"doc_name": "MyCylinder",
"obj_name": "Cylinder",
"obj_type": "Part::Cylinder",
"obj_properties": {
"Height": 30,
"Radius": 10,
"Placement": {
"Base": {
"x": 10,
"y": 10,
"z": 0
},
"Rotation": {
"Axis": {
"x": 0,
"y": 0,
"z": 1
},
"Angle": 45
}
},
"ViewObject": {
"ShapeColor": [0.5, 0.5, 0.5, 1.0]
}
}
}
```
If you want to create a circle with a radius of 10, you can use the following data.
```json
{
"doc_name": "MyCircle",
"obj_name": "Circle",
"obj_type": "Draft::Circle",
}
```
If you want to create a FEM analysis, you can use the following data.
```json
{
"doc_name": "MyFEMAnalysis",
"obj_name": "FemAnalysis",
"obj_type": "Fem::AnalysisPython",
}
```
If you want to create a FEM constraint, you can use the following data.
```json
{
"doc_name": "MyFEMConstraint",
"obj_name": "FemConstraint",
"obj_type": "Fem::ConstraintFixed",
"analysis_name": "MyFEMAnalysis",
"obj_properties": {
"References": [
{
"object_name": "MyObject",
"face": "Face1"
}
]
}
}
```
If you want to create a FEM mechanical material, you can use the following data.
```json
{
"doc_name": "MyFEMAnalysis",
"obj_name": "FemMechanicalMaterial",
"obj_type": "Fem::MaterialCommon",
"analysis_name": "MyFEMAnalysis",
"obj_properties": {
"Material": {
"Name": "MyMaterial",
"Density": "7900 kg/m^3",
"YoungModulus": "210 GPa",
"PoissonRatio": 0.3
}
}
}
```
If you want to create a FEM mesh, you can use the following data.
The `Part` property is required.
```json
{
"doc_name": "MyFEMMesh",
"obj_name": "FemMesh",
"obj_type": "Fem::FemMeshGmsh",
"analysis_name": "MyFEMAnalysis",
"obj_properties": {
"Part": "MyObject",
"ElementSizeMax": 10,
"ElementSizeMin": 0.1,
"MeshAlgorithm": 2
}
}
```
Inputs: doc_name (required), obj_name (required), obj_type (required), analysis_name, +1 more.
Delete an object in FreeCAD.
Args:
doc_name: The name of the document to delete the object from.
obj_name: The name of the object to delete.
Returns:
A message indicating the success or failure of the object deletion and a screenshot of the object.
Inputs: doc_name (required), obj_name (required).
Edit an object in FreeCAD.
This tool is used when the create_object tool cannot handle the object creation.
Args:
doc_name: The name of the document to edit the object in.
obj_name: The name of the object to edit.
obj_properties: The properties of the object to edit.
Returns:
A message indicating the success or failure of the object editing and a screenshot of the object.
Inputs: doc_name (required), obj_name (required), obj_properties (required).
Execute arbitrary Python code in FreeCAD.
Args:
code: The Python code to execute.
Returns:
A message indicating the success or failure of the code execution, the output of the code execution, and a screenshot of the object.
Inputs: code (required).
Get an object from a document. You can use this tool to get the properties of an object to see what you can check or edit.
Args:
doc_name: The name of the document to get the object from.
obj_name: The name of the object to get.
Returns:
The object and a screenshot of the object.
Inputs: doc_name (required), obj_name (required).
Get all objects in a document. You can use this tool to get the objects in a document to see what you can check or edit.
Args:
doc_name: The name of the document to get the objects from.
Returns:
A list of objects in the document and a screenshot of the document.
Inputs: doc_name (required).
Get the list of parts in the parts library addon.
Inputs: no named parameters.
Get a screenshot of the active view.
Args:
view_name: The name of the view to get the screenshot of.
The following views are available:
- "Isometric"
- "Front"
- "Top"
- "Right"
- "Back"
- "Left"
- "Bottom"
- "Dimetric"
- "Trimetric"
Returns:
A screenshot of the active view.
Inputs: view_name (required).
Insert a part from the parts library addon.
Args:
relative_path: The relative path of the part to insert.
Returns:
A message indicating the success or failure of the part insertion and a screenshot of the object.
Inputs: relative_path (required).
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
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Scored across 10 tools
Each tool targets a distinct purpose: document creation, object CRUD, viewing, code execution, and parts library operations. The only potential overlap is between create_object and edit_object, but they clearly separate creation from modification.
All tools follow a consistent verb_noun pattern in snake_case (create_document, get_objects, insert_part_from_library). The style is uniform and readable throughout.
With 10 tools, the server covers the core FreeCAD workflows (document, object, view, parts library, code execution) without unnecessary bloat. The count feels right for the scope.
The toolset provides solid coverage for creating, reading, updating, and deleting objects, plus viewing and parts library access. Missing features like save/export are likely handled via execute_code, but there are a few minor gaps in document-level lifecycle management.
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