AutoCAD MCP Server

MCP serverCommunity

Drives AutoCAD LT 2024+ on Windows through an AutoLISP dispatcher, with a headless ezdxf mode that writes DXF without AutoCAD. By Puran Water.

630 starsUpdated 2 days agoGitHub data from 5 Nov 2026

At a glance

Type: MCP server
Works with: AutoCAD
How it connects: Drives a running copy of the tool
Access: Can modify models
Tool versions: AutoCAD LT 2024 or newer on Windows for the live backend (revision tools exercised in LT 2027); the ezdxf backend needs no AutoCAD
Operating systems: Windows
Needs a AutoCAD licence: No
Transport: Local (stdio)
AI clients documented: Claude Desktop, Claude Code
Licence: MIT
Language: Python

What it can do

Groups its functions into eight tools (drawing, entity, layer, block, annotation, P&ID, view, system) that work the same on either backend.
Runs any AutoLISP expression you pass it through an execute_lisp operation, so the agent isn't limited to the built-in commands.
Sends commands to AutoCAD without stealing window focus and returns screenshots even when AutoCAD is minimised.
Applies journaled revision batches to an existing DWG (layer renames, colour and lineweight patches, revision clouds, block attribute updates) and records before and after values.
Places P&ID symbols from the CAD Tools Online library and draws process lines, tags and line numbers.

Limitations

The live backend needs Windows and AutoCAD LT 2024 or later; LT for Mac has no AutoLISP, and the README documents LT rather than full AutoCAD.
You load mcp_dispatch.lsp into AutoCAD with APPLOAD (or the Startup Suite) before the server can reach it.
P&ID symbol tools need the separately licensed CAD Tools Online symbol library; offset, fillet and chamfer are not available headlessly.
Revision journals are a record, not automatic rollback; the author advises working on a copy and checking screenshots after every batch.

Install

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

Source: github.com/puran-water/autocad-mcp#1-clone-and-install

{
  "mcpServers": {
    "autocad-mcp": {
      "command": "C:\\path\\to\\autocad-mcp\\.venv\\Scripts\\python.exe",
      "args": ["-m", "autocad_mcp"],
      "env": { "AUTOCAD_MCP_BACKEND": "file_ipc" }
    }
  }
}

Source: github.com/puran-water/autocad-mcp#3-configure-your-mcp-client

MCP servers and skills run code on your computer. Review the source before installing.

AI-generated models, drawings and results must be checked by a qualified engineer before use.