# AutoCAD MCP Server for Claude Web (`claude.ai`)

Connect locally running **AutoCAD 2014+** to **Claude Web (`claude.ai`)** via **Model Context Protocol (MCP)** and **Cloudflare Tunnels**.

Includes full source code for the 149-tool **AutoCAD MCP Pro** engine with dual COM API + ezdxf backend support.

---

## 🏗️ Architecture

```
   ┌───────────────────────┐
   │  Claude Web           │
   │  (claude.ai)          │
   └───────────┬───────────┘
               │ Remote MCP (Streamable HTTP / SSE) over HTTPS
               ▼
   ┌───────────────────────┐
   │ Cloudflare Tunnel     │ (https://<subdomain>.trycloudflare.com/mcp)
   └───────────┬───────────┘
               │ Secure Encrypted Tunnel
               ▼
   ┌───────────────────────┐
   │ autocad-mcp Server    │ (FastMCP 3.4.7 Server on 127.0.0.1:8000)
   └───────────┬───────────┘
               │ PyWin32 COM API
               ▼
   ┌───────────────────────┐
   │  AutoCAD 2014         │ (Live AutoCAD Instance)
   └───────────────────────┘
```

---

## 🚀 Quick Start

### 1. Requirements

- Windows PC
- AutoCAD 2014 (or newer 64-bit AutoCAD)
- Python 3.11+ 64-bit
- `cloudflared.exe` (Cloudflare Tunnel client)

### 2. Installation

Install dependencies:

```bash
pip install -r requirements.txt
```

### 3. Start AutoCAD MCP Server

Double-click `start_autocad_mcp.bat` or run:

```cmd
set AUTOCAD_MCP_BACKEND=com
python server.py --transport http --host 127.0.0.1 --port 8000
```

### 4. Start Cloudflare Tunnel

Double-click `start_cloudflare.bat` or run:

```cmd
cloudflared tunnel --url http://127.0.0.1:8000
```

This will output a temporary HTTPS URL (e.g. `https://<subdomain>.trycloudflare.com`).

---

## 🔗 Connecting to Claude Web (`claude.ai`)

1. Open **[Claude Web](https://claude.ai)**.
2. Go to **Settings** → **Connectors** (or **Remote MCP Connectors**).
3. Click **Add Remote MCP Connector**.
4. Enter your endpoint URL:
   ```text
   https://<your-subdomain>.trycloudflare.com/mcp
   ```
5. Click **Connect**. Claude Web will connect and expose all 149 AutoCAD MCP tools!

---

## 🛠️ Testing

Run the test script to verify connection and tool listing:

```bash
python test_mcp.py http://127.0.0.1:8000/mcp
```

Or test via Cloudflare public endpoint:

```bash
python test_mcp.py https://<your-subdomain>.trycloudflare.com/mcp
```

---

## 🔒 Security

- **Loopback Bind**: The MCP server binds only to `127.0.0.1:8000`.
- **Authentication**: Optional Bearer token authentication via `MCP_AUTH_TOKEN` environment variable.

---

## 📄 License & Credits

Built with [FastMCP](https://github.com/jlowin/fastmcp) and `autocad-mcp-pro` (by Umutcan Edizsalan).