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# Fusion 360 MCP Server
A Model Context Protocol (MCP) server that interfaces between Cline and Autodesk Fusion 360. This server exposes Fusion 360 toolbar-level commands as callable tools that map directly to Fusion's API.
## 🧠 Overview
This project allows Cline to:
- Parse natural language prompts (e.g., "Make a box with rounded corners")
- Resolve them into Fusion tool actions (e.g., CreateSketch → DrawRectangle → Extrude → Fillet)
- Call those tools through this MCP server
- Return Python scripts that can be executed in Fusion 360
## 🛠️ Installation
### Prerequisites
- Python 3.9 or higher
- Autodesk Fusion 360
### Setup
1. Clone this repository:
```bash
git clone https://github.com/yourusername/fusion360-mcp-server.git
cd fusion360-mcp-server
```
2. Install dependencies:
```bash
pip install -r requirements.txt
```
## 🚀 Usage
### Running the HTTP Server
```bash
cd src
python main.py
```
This will start the FastAPI server at `http://127.0.0.1:8000`.
### Running as an MCP Server
```bash
cd src
python main.py --mcp
```
This will start the server in MCP mode, reading from stdin and writing to stdout.
### API Endpoints
- `GET /`: Check if the server is running
- `GET /tools`: List all available tools
- `POST /call_tool`: Call a single tool and generate a script
- `POST /call_tools`: Call multiple tools in sequence and generate a script
### Example API Calls
#### List Tools
```bash
curl -X GET http://127.0.0.1:8000/tools
```
#### Call a Single Tool
```bash
curl -X POST http://127.0.0.1:8000/call_tool \
-H "Content-Type: application/json" \
-d '{
"tool_name": "CreateSketch",
"parameters": {
"plane": "xy"
}
}'
```
#### Call Multiple Tools
```bash
curl -X POST http://127.0.0.1:8000/call_tools \
-H "Content-Type: application/json" \
-d '{
"tool_calls": [
{
"tool_name": "CreateSketch",
"parameters": {
"plane": "xy"
}
},
{
"tool_name": "DrawRectangle",
"parameters": {
"width": 10,
"depth": 10
}
},
{
"tool_name": "Extrude",
"parameters": {
"height": 5
}
}
]
}'
```
## 📦 Available Tools
The server currently supports the following Fusion 360 tools:
### Create
- **CreateSketch**: Creates a new sketch on a specified plane
- **DrawRectangle**: Draws a rectangle in the active sketch
- **DrawCircle**: Draws a circle in the active sketch
- **Extrude**: Extrudes a profile into a 3D body
- **Revolve**: Revolves a profile around an axis
### Modify
- **Fillet**: Adds a fillet to selected edges
- **Chamfer**: Adds a chamfer to selected edges
- **Shell**: Hollows out a solid body with a specified wall thickness
- **Combine**: Combines two bodies using boolean operations
### Export
- **ExportBody**: Exports a body to a file
## 🔌 MCP Integration
To use this server with Cline, add it to your MCP settings configuration file:
```json
{
"mcpServers": {
"fusion360": {
"command": "python",
"args": ["/path/to/fusion360-mcp-server/src/main.py", "--mcp"],
"env": {},
"disabled": false,
"autoApprove": []
}
}
}
```
## 🧩 Tool Registry
Tools are defined in `src/tool_registry.json`. Each tool has:
- **name**: The name of the tool
- **description**: What the tool does
- **parameters**: The parameters the tool accepts
- **docs**: Link to relevant Fusion API documentation
Example tool definition:
```json
{
"name": "Extrude",
"description": "Extrudes a profile into a 3D body.",
"parameters": {
"profile_index": {
"type": "integer",
"description": "Index of the profile to extrude.",
"default": 0
},
"height": {
"type": "number",
"description": "Height of the extrusion in mm."
},
"operation": {
"type": "string",
"description": "The operation type (e.g., 'new', 'join', 'cut', 'intersect').",
"default": "new"
}
},
"docs": "https://help.autodesk.com/view/fusion360/ENU/?guid=GUID-6D381FCD-22AB-4F08-B4BB-5D3A130189AC"
}
```
## 📝 Script Generation
The server generates Fusion 360 Python scripts based on the tool calls. These scripts can be executed in Fusion 360's Script Editor.
Example generated script:
```python
import adsk.core, adsk.fusion, traceback
def run(context):
ui = None
try:
app = adsk.core.Application.get()
ui = app.userInterface
design = app.activeProduct
# Get the active component in the design
component = design.rootComponent
# Create a new sketch on the xy plane
sketches = component.sketches
xyPlane = component.xYConstructionPlane
sketch = sketches.add(xyPlane)
# Draw a rectangle
rectangle = sketch.sketchCurves.sketchLines.addTwoPointRectangle(
adsk.core.Point3D.create(0, 0, 0),
adsk.core.Point3D.create(10, 10, 0)
)
# Extrude the profile
prof = sketch.profiles.item(0)
extrudes = component.features.extrudeFeatures
extInput = extrudes.createInput(prof, adsk.fusion.FeatureOperations.NewBodyFeatureOperation)
distance = adsk.core.ValueInput.createByReal(5)
extInput.setDistanceExtent(False, distance)
extrude = extrudes.add(extInput)
ui.messageBox('Operation completed successfully')
except:
if ui:
ui.messageBox('Failed:\n{}'.format(traceback.format_exc()))
```
## 🧪 Extending the Server
### Adding New Tools
1. Add a new tool definition to `src/tool_registry.json`
2. Add a script template to `SCRIPT_TEMPLATES` in `src/script_generator.py`
3. Add parameter processing logic to `_process_parameters` in `src/script_generator.py`
## 📚 Documentation Links
- [Fusion 360 API Docs](https://help.autodesk.com/view/fusion360/ENU/)
- [Python API Class Reference](https://help.autodesk.com/view/fusion360/ENU/?guid=GUID-4190E5AD-BE6F-4682-A6D1-67D944D3DD58)
- [Feature API](https://help.autodesk.com/view/fusion360/ENU/?guid=GUID-22D93F54-B84E-4C0B-97D3-CAEA7D2BAFFE)
- [Sketch API](https://help.autodesk.com/view/fusion360/ENU/?guid=GUID-2533FC11-8BD3-4B3A-B52C-F8B470DC4065)
## 🔄 Future Enhancements
- Session state tracking for context-aware operations
- Dynamic tool registration
- Automation via socket or file polling
- More Fusion commands
## 📄 License
This project is licensed under the MIT License - see the LICENSE file for details.
