# Autodesk Fusion 360 MCP Server

> MCP server from JustusBraitinger/Autodesk-Fusion-360-MCP-Server.

- **Type:** MCP server
- **Install:** `agentstack add mcp-justusbraitinger-autodesk-fusion-360-mcp-server`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [JustusBraitinger](https://agentstack.voostack.com/s/justusbraitinger)
- **Installs:** 0
- **Category:** [Integrations](https://agentstack.voostack.com/c/integrations)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [JustusBraitinger](https://github.com/JustusBraitinger)
- **Source:** https://github.com/JustusBraitinger/Autodesk-Fusion-360-MCP-Server

## Install

```sh
agentstack add mcp-justusbraitinger-autodesk-fusion-360-mcp-server
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Fusion MCP Integration

https://github.com/user-attachments/assets/46c8140e-377d-4618-a304-03861cb3d7d9

## 🎯 About

Fusion MCP Integration bridges AI assistants with Autodesk Fusion 360 through the Model Context Protocol (MCP). This enables:

- ✨ **Conversational CAD** - Create 3D models using natural language
- 🤖 **AI-Driven Automation** - Automate repetitive modeling tasks
- 🔧 **Parametric Control** - Dynamically modify design parameters
- 🎓 **Accessible CAD** - Lower the barrier for non-CAD users

> **Note:** This is designed as an assistive tool and educational project, not a replacement for professional CAD workflows.
> Projects like this can assist people with no experience in CAD workflows.

> **Goal:** Enable conversational CAD and AI-driven automation in Fusion.

---

# Setup

**I highly recommend to do everything inside Visual Studio Code or an other IDE**

---

## Requirements
| Requirement | Link |
|------------|------|
| Python 3.10+ | https://python.org |
| Autodesk Fusion 360 | https://autodesk.com/fusion360 |
| Claude Desktop | https://claude.ai/download |
| VS Code | https://code.visualstudio.com |

---

## Clone Repository
```bash
git clone https://github.com/JustusBraitinger/FusionMCP
```

> **Important:** Do **NOT** start the Add-In yet.

## Install Python Dependencies
```bash
cd Server
python -m venv venv
```

### Activate venv

**Windows PowerShell**
```powershell
.\venv\Scripts\Activate
```

### Install packages
```bash
pip install -r requirements.txt
pip install "mcp[cli]"
```
## Installing the MCP Add-In for Fusion 360

```bash
cd ..
python Install_Addin.py
```
---

## Connect to Claude
The most simple way to add the MCP-Server to Claude Desktop is to run following command:  
```bash
cd Server
uv run mcp install MCP_Server.py
```
The output should be like this:    

```bash
[11/13/25 08:42:37] INFO     Added server 'Fusion' to Claude config
                    INFO     Successfully installed Fusion in Claude app                                                                                                                                                               
```

# Alternative

### Modify Claude Config
In Claude Desktop go to:  
**Settings → Developer → Edit Config**

Add this block (change the path for your system):
```json
{
  "mcpServers": {
    "FusionMCP": {
      "command": "uv",
      "args": [
        "--directory",
        "C:\\Path\\to\\FusionMCP\\Server",
        "run",
        "MCP_Server.py"
      ]
    }
  }
}
```
> **Note:** Windows paths require double backslashes `\\`

### Using the MCP in Claude
1. Restart Claude if needed (force close if not visible)
2. Click **➕ Add** (bottom left of chat)
3. Select **Add from Fusion**
4. Choose a Fusion MCP prompt

---

## Use MCP in VS Code (Copilot)

Create or edit the file:
```
%APPDATA%\Code\User\globalStorage\github.copilot-chat\mcp.json
```

Paste:
```json
{
  "servers": {
    "FusionMCP": {
      "url": "http://127.0.0.1:8000/sse",
      "type": "http"
    }
  },
  "inputs": []
}
```

### Alternative Setup in VS Code
1. Press **CTRL + SHIFT + P** → search **MCP** → choose:
2. **Add MCP**
3. **HTTP**
4. Enter:
5. Name your MCP **`FusionMCP`**!!
```
http://127.0.0.1:8000/sse
```

---

## Try It Out 😄
Activate the Fusion Addin inside Fusion
### Configured in VS-Code:
Start the server:
```bash
python MCP_Server.py
```
Then type   
```
/mcp.FusionMCP
```
Now you will see a list of predetermined Prompts.   
### Configured in Claude   
Just open Claude, an ask for the FusionMCP

---

## 🛠️ Available Tools

---

### ✏️ Sketching & Creation Tools

| Tool | Description |
| :--- | :--- |
| **Draw 2D circle** | Draws a 2D **circle** at a specified position and plane. |
| **Ellipsie** | Generates an **ellipse** (elliptical curve) in the sketching plane. |
| **Draw lines** | Creates a **polyline** (multiple connected lines) as a sketch. |
| **Draw one line** | Draws a single line between two 3D points. |
| **3-Point Arc** | Draws a **circular arc** based on three defined points. |
| **Spline** | Draws a **Spline curve** through a list of 3D points (used for sweep path). |
| **Draw box** | Creates a **box** (solid body) with definable dimensions and position. |
| **Draw cylinder** | Draws a **cylinder** (solid body). |
| **Draw text**| Draws a text and extrudes it with given values |
| **Draw Witzenmann logo** | A **fun demo function** for creating the Witzenmann logo. |

---

### ⚙️ Feature & Modification Tools

| Tool | Description |
| :--- | :--- |
| **Extrude** | **Extrudes** the last active sketch by a given value to create a body. |
| **Revolve** | Creates a revolved body by **revolving** a profile around an axis. |
| **Sweep** | Executes a sweep feature using the previously created profile and spline path. |
| **Loft** | Creates a complex body by **lofting** between a defined number of previously created sketches. |
| **Thin extrusion** | Creates a **thin-walled extrusion** (extrusion with constant wall thickness). |
| **Cut extrude** | Removes material from a body by **cutting** a sketch (as a hole/pocket). |
| **Draw holes** | Creates **Counterbore holes** at specified points on a surface (`faceindex`). |
| **Fillet edges** | Rounds sharp edges with a defined **radius** (fillet). |
| **Shell body** | **Hollows** out the body, leaving a uniform wall thickness. |
| **Circular pattern** | Creates a **circular pattern** (array) of features or bodies around an axis. |
| **Rectangular pattern**| Creates a **rectangular pattern** of a body|

---

### 📏 Analysis & Control

| Tool | Description |
| :--- | :--- |
| **Count** | Counts the total number of all **model parameters**. |
| **List parameters** | Lists all defined **model parameters** in detail. |
| **Change parameter** | Changes the value of an existing named parameter in the model. |
| **Test connection** | Tests the communication link to the Fusion 360 server. |
| **Undo** | **Undoes** the last operation in Fusion 360. |
| **Delete all** | **Deletes all objects** in the current Fusion 360 session (`destroy`). |

---

### 💾 Export

| Tool | Description |
| :--- | :--- |
| **Export STEP** | **Exports** the model as a **STEP** file. |
| **Export STL** | **Exports** the model as an **STL** file. |

## Architecture

### Server.py
- Defines MCP server, tools, and prompts
- Handles HTTP calls to Fusion add-in

### MCP.py
- Fusion Add-in
- Because the Fusion API is not thread-safe, this uses:
  - Custom event handler
  - Task queue

---
### Why This Architecture?

The Fusion 360 API is **not thread-safe** and requires all operations to run on the main UI thread. Our solution:

1. **Event-Driven Design** - Use Fusion's CustomEvent system
2. **Task Queue** - Queue operations for sequential execution
3. **Async Bridge** - HTTP server handles async MCP requests

   
## Security Considerations 🔒
- Local execution → safe by default
- Currently HTTP (OK locally, insecure on networks)
- Validate tool inputs to avoid prompt injection
- Real security depends on tool implementation

---

### This is NOT

- ❌ A production-ready tool
- ❌ A replacement for professional CAD software
- ❌ Suitable for critical engineering work
- ❌ Officially supported by Autodesk

### This IS

- ✅ A proof-of-concept
- ✅ An educational project
- ✅ A demonstration of MCP capabilities
- ✅ A tool for rapid prototyping and learning

---

**This is a proof-of-concept, not production software.**

# Note #
This Fusion MCP implementation uses hard coded Tools, instead of trusting on   
the training of the LLM's. I chose this, because I wanted to test how far I can come  

## Contact
justus@braitinger.org

## Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [JustusBraitinger](https://github.com/JustusBraitinger)
- **Source:** [JustusBraitinger/Autodesk-Fusion-360-MCP-Server](https://github.com/JustusBraitinger/Autodesk-Fusion-360-MCP-Server)
- **License:** MIT

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/mcp-justusbraitinger-autodesk-fusion-360-mcp-server
- Seller: https://agentstack.voostack.com/s/justusbraitinger
- Browse the marketplace: https://agentstack.voostack.com/browse

---
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