Fusion 360 MCP Server

A Model Context Protocol (MCP) server that enables Claude Desktop to control Autodesk Fusion 360 through natural language commands. Create, manipulate, and query 3D objects in Fusion 360 by simply describing what you want to do.

Inspiration: This project is inspired by and adapted from the work of Kanbara Tomonori, Autodesk certified Fusion 360 Expert Elite. This version provides a French-localized and extended implementation of the original MCP × Fusion API integration concept.

Features

• 84+ CAD tools accessible via natural language through Claude Desktop
• Works on existing designs: open any Fusion 360 file and Claude can inspect, modify, and extend it
• Shape creation: cubes, cylinders, boxes, spheres, hemispheres, cones, torus, pipes, polygon prisms, swept profiles
• Sketch system: create sketches with lines, circles, arcs, rectangles, polygons, splines, and text
• Advanced modeling: revolve, loft, sweep, construction planes
• Patterns: circular and rectangular arrays, symmetric copies, body duplication
• Geometry operations: shell, hole (counterbore/countersink), thread, draft, offset face, split body, scale
• Boolean operations: join, cut, intersect on selected or named bodies
• Edge modifications: fillets and chamfers with edge index selection
• Transformations: move and rotate bodies by name with full XYZ control
• Materials & appearance: assign physical materials and visual appearances
• Export: STL (3D printing), STEP (CAD interop), F3D (Fusion archive)
• Parametric design: create and modify named parameters
• Query tools: bounding box, dimensions, center of mass, mass properties, edge/face info, distance measurement
• Viewport capture: screenshot the viewport for AI visual feedback
• Macro execution: batch multiple commands in a single call
• Real-time integration: commands execute immediately in Fusion 360

Prerequisites

• Node.js (version 14 or higher)
• Autodesk Fusion 360 (installed and licensed)
• Claude Desktop application
• Windows or macOS

Architecture

Claude Desktop  ──>  MCP Server (Node.js)  ──>  fusion_command.txt
                                                       │
Claude Desktop  <──  MCP Server (Node.js)  <──  fusion_response.txt
                                                       │
                                              Fusion 360 Add-in (Python)
                                                       │
                                              Fusion 360 Application

The MCP server communicates with Fusion 360 through JSON files (~/Documents/fusion_command.txt and ~/Documents/fusion_response.txt). The Fusion 360 add-in polls for new commands every 0.5s and writes responses back.

Installation

1. Clone the repository

git clone https://github.com/yourusername/fusion-claude-ultimate.git
cd fusion-claude-ultimate

2. Install dependencies

cd server
npm install

3. Install the Fusion 360 add-in

Copy the fusion_script/fusion_mcp_server/ folder to your Fusion 360 add-ins directory:

Windows:

%APPDATA%\Autodesk\Autodesk Fusion 360\API\AddIns\

macOS:

~/Library/Application Support/Autodesk/Autodesk Fusion 360/API/AddIns/

Then in Fusion 360, go to Tools > Add-Ins and enable Fusion MCP Server.

4. Configure Claude Desktop

Edit your Claude Desktop configuration file:

Windows: %APPDATA%\Claude\claude_desktop_config.json macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

Add the following (replace YOUR_PATH with the actual path to the project):

{
  "mcpServers": {
    "fusion_mcp": {
      "command": "node",
      "args": ["YOUR_PATH/fusion-claude-ultimate/server/server.mjs"],
      "protocol": "stdio",
      "description": "Control Fusion 360 via MCP"
    }
  }
}

5. Restart Claude Desktop

Close Claude Desktop completely and restart it to load the new MCP server.

Usage

Once configured, control Fusion 360 through natural language in Claude Desktop:

Create a cube with 50mm sides
Make a cylinder with radius 25mm and height 100mm
Create a torus with major radius 30mm and minor radius 10mm
Move "Cube1" 20mm along the X axis
Add a 3mm fillet to edges 0 and 1 of "Box1"
Combine "Cube1" and "Cylinder1" with a cut operation
What are the dimensions of "Box1"?
Shell "Box1" with 2mm wall thickness, removing the top face
Create a sketch on the XY plane, draw a circle, then extrude it 20mm
Make a vase shape: draw a profile and revolve it 360 degrees
Export the design as STL for 3D printing
Set the material to Aluminum on "Body1"
Capture a screenshot of the viewport

Available Tools

Shape Creation

Patterns & Copies

Geometry Operations

Sketch System

Advanced Modeling

Assembly

Transformations & Visibility

Selection

Query & Measurement

Export

Materials & Appearance

Parametric Design

Design Inspection (work on existing files)

Utility

Project Structure

fusion-claude-ultimate/
├── server/
│   ├── server.mjs                 # MCP server (Node.js)
│   ├── package.json               # Dependencies
│   └── mcp_server.log             # Runtime logs
├── fusion_script/
│   └── fusion_mcp_server/
│       ├── fusion_mcp_server.py   # Fusion 360 add-in (Python)
│       └── fusion_mcp_server.manifest
├── AppDataRoamingClaude/
│   └── claude_desktop_config.json # Example configuration
└── readme.md

Troubleshooting

Check server logs

# Real-time logs (macOS/Linux)
tail -f server/mcp_server.log

# Windows
type server\mcp_server.log

Verify commands are being sent

# Windows
type "%USERPROFILE%\Documents\fusion_command.txt"

# macOS/Linux
cat ~/Documents/fusion_command.txt

Common issues

Contributing

1. Fork the repository
2. Create a feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add some amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

License

This project is licensed under the MIT License - see the LICENSE file for details.

Disclaimer

This software is provided as-is. Use at your own risk. Save your Fusion 360 work before using this tool.

Acknowledgments

• Original concept: Kanbara Tomonori — Autodesk certified Fusion 360 Expert Elite
• Model Context Protocol (MCP) by Anthropic
• Fusion 360 by Autodesk
• Claude Desktop by Anthropic