Fusion360 MCP Server

Fusion360 MCP Server

Beta — This project is under active development. APIs and tool behavior may change between releases. Use at your own discretion. Feedback and bug reports welcome via GitHub Issues.

MCP server that connects AI coding agents to Autodesk Fusion 360 for CAD automation.

Tested with Claude Code. Works with any MCP-compatible client — OpenCode, Codex, Cursor, or anything that speaks the Model Context Protocol.

How it works

Any MCP Client ←(stdio MCP)→ This Server ←(TCP :9876)→ Fusion360MCP Add-in ←(CustomEvent)→ Fusion Main Thread

Two components:

1. MCP Server (this repo) — Python process that speaks MCP protocol to Claude and forwards commands over TCP
2. Fusion360MCP Add-in (installed in Fusion's AddIns folder) — runs inside Fusion 360, executes API calls safely on the main thread

Prerequisites

• uv (Python package manager)
• Autodesk Fusion 360
• An MCP-compatible client (Claude Code, OpenCode, Codex, Cursor, etc.)

Installation

1. Install the Fusion 360 Add-in

Quick install (symlink for development):

./scripts/install-addon.sh

Manual install:

# macOS
cp -r addon ~/Library/Application\ Support/Autodesk/Autodesk\ Fusion\ 360/API/AddIns/Fusion360MCP

# Windows (PowerShell)
Copy-Item -Recurse addon "$env:APPDATA\Autodesk\Autodesk Fusion 360\API\AddIns\Fusion360MCP"

Then start it in Fusion: Shift+S → Add-Ins → Fusion360MCP → Run

You should see [MCP] Server listening on localhost:9876 in the TEXT COMMANDS window.

2. Connect your MCP client

The MCP server is published on PyPI — no need to clone this repo.

Claude Code

claude mcp add fusion360 -- uvx fusion360-mcp-server --mode socket

Other MCP clients

The server runs over stdio, so any MCP-compatible client can launch it. The command is:

uvx fusion360-mcp-server --mode socket

{
  "mcpServers": {
    "fusion360": {
      "command": "uvx",
      "args": [
        "fusion360-mcp-server",
        "--mode", "socket"
      ]
    }
  }
}

3. Verify

Call the ping tool from your client. If it returns {"pong": true}, everything is connected.

Uninstalling

1. Remove the fusion360 entry from your MCP client config
2. Stop the add-in in Fusion (Shift+S → Add-Ins → Fusion360MCP → Stop)
3. Delete the add-in folder from Fusion's AddIns directory

Available Tools (80)

Scene & Query

Sketching

Features

Body Operations