Vn Autocad Claude — Development skill for Claude Code

AutoCAD MCP Server

MCP server for AutoCAD LT automation and headless DXF generation.

Two backends, one API:

Backend	Runtime	Requires AutoCAD?	Screenshot
File IPC	Windows Python	Yes — AutoCAD LT 2024+ (Windows)	Win32 PrintWindow
ezdxf	Any platform	No (headless)	matplotlib render

The server exposes **8 consolidated tools** (`drawing`, `entity`, `layer`, `block`, `annotation`, `pid`, `view`, `system`) over the MCP stdio transport. An MCP client (Claude Desktop, Claude Code, etc.) connects and drives AutoCAD through natural-language requests.

Prerequisites (File IPC backend)

• Windows 10/11 (the File IPC backend uses Win32 APIs for focus-free window messaging)
• AutoCAD LT 2024 or newer — AutoLISP support was added in LT 2024 for Windows. AutoCAD LT for Mac exists but does not support AutoLISP.
• Python 3.10+ (Windows native — not WSL Python)
• uv package manager (install guide)

The ezdxf headless backend works on any platform (Linux, macOS, WSL) for offline DXF generation without AutoCAD installed.

Quick Start

1. Clone and install

git clone https://github.com/puran-water/autocad-mcp.git
cd autocad-mcp
uv sync

2. Load the LISP dispatcher in AutoCAD LT

Open AutoCAD LT and load `mcp_dispatch.lsp` using **APPLOAD**:

1. Type APPLOAD in the AutoCAD command line
2. Browse to /lisp-code/mcp_dispatch.lsp
3. Click Load
4. You should see: === MCP Dispatch v3.1 loaded === and Ready for commands via (c:mcp-dispatch)

**Tip:** Add the file to your AutoCAD Startup Suite (in the APPLOAD dialog) so it loads automatically with every drawing.

3. Configure your MCP client

Add to your MCP client configuration (e.g. Claude Desktop `claude_desktop_config.json`):

{
  "mcpServers": {
    "autocad-mcp": {
      "command": "C:\\path\\to\\autoca