Fusion 360 MCP Server

Control Autodesk Fusion 360 with Claude AI through the Model Context Protocol (MCP).

What This Does

Ask Claude to create a part, watch it appear in Fusion 360

This MCP server lets Claude AI directly control Fusion 360 to: lets Claude AI directly control Fusion 360 to:

• Create 3D sketches, extrusions, revolves, and sweeps
• Build multi-component assemblies with proper positioning
• Apply fillets, chamfers, shells, and patterns
• Export to STL, STEP, and 3MF formats
• Measure geometry and verify designs

Example prompt: “Create a 50mm cube with 5mm rounded edges” → Claude creates it directly in Fusion 360.

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Quick Start (5 minutes)

Prerequisites

• Autodesk Fusion 360 (free for personal use)
• Claude Desktop app with MCP support
• Python 3.10+ with pip

Step 1: Install the MCP Server

# Install the MCP framework
pip install mcp

# Clone this repository (or download ZIP)
git clone https://github.com/YOUR_USERNAME/fusion360-mcp.git
cd fusion360-mcp

Step 2: Install the Fusion 360 Add-in

1. Open Fusion 360
2. Go to Utilities → ADD-INS (or press Shift+S)
3. Click Add-Ins tab → Green Plus (+) button
4. Navigate to the fusion-addin folder from this repo
5. Select FusionMCP folder → Click Open
6. Check Run on Startup → Click Run

You should see: “Fusion MCP Started! Listening at: C:\Users.…\fusion_mcp_comm”

Successfully installed FusionMCP add-in

Step 3: Configure Claude Desktop

Edit your Claude Desktop config file:

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

Add this to the mcpServers section:

{
  "mcpServers": {
    "fusion360": {
      "command": "python",
      "args": ["C:/path/to/fusion360-mcp/mcp-server/fusion360_mcp_server.py"]
    }
  }
}

Note: Use forward slashes in the path, even on Windows.

Step 4: Add the Skill File (Recommended)

For best results, create a Claude Project and paste the contents of docs/SKILL.md into the Project Instructions. This teaches Claude:

• Fusion 360 coordinate system rules
• Unit conventions (everything in centimeters!)
• Best practices for assemblies
• Common pitfalls to avoid

For advanced spatial reasoning, also include docs/SPATIAL_AWARENESS.md. This teaches Claude:

• How to verify geometry placement BEFORE operations
• Coordinate mapping between sketch planes and world space
• The critical Z-negation rule for XZ/YZ planes
• Pre/post operation verification protocols

Step 5: Restart and Test