MCP server CX Codex

qcad-mcp — Claude Code MCP server: what it does, how to install

Q: How do you install and run qcad-mcp in Claude Code?

Initialize repository dependencies with `just bootstrap`, then start the runtime using `start.ps1`. The server exposes its API on port `11966` for MCP client connections.

Automates 2D CAD tasks by parsing DXF and DWG files into SVG layouts or 3D STL meshes. Useful for analyzing room dimensions and generating geometry inside AI coding assistants.

Open on GitHub

What qcad-mcp does

This server connects your development environment to the Python library ezdxf and optional QCAD Pro binaries. Through 12 specialized MCP tools, it extracts layer details, analyzes room dimensions, adds annotations, and extrudes flat blueprints into 3D meshes like STL, OBJ, or GLB.

All project drawings reside in local persistent storage under %LOCALAPPDATA%\qcad-mcp\depot, customizable via QCAD_MCP_DEPOT. The package also spins up a control dashboard on port 11967 alongside a REST interface on port 11966. Workflows run locally.

Core DXF manipulation relies on ezdxf under Python 3.13+, but converting DWG files requires a local QCAD Pro installation. The service can also hand off geometry to blender-mcp and freecad-mcp without forcing companion dependencies.

What it helps with

convert DXF floor plans into 3D STL meshes
extract room dimensions and calculate boundary areas
batch-export CAD drawings into SVG vector graphics
convert DWG files to DXF using QCAD Pro

Example prompts for the agent

Extrude the exterior walls in floorplan.dxf into an STL mesh with height 3.0
Analyze the rooms in office_layout.dxf and list door dimensions
Convert schematic.dwg to DXF and export the layers to SVG

How to install qcad-mcp

Install

The MCP registry has no launch command for it: see the repository README

Step by step, with commands for each platform: How to add an MCP server to Claude Code, Codex, Cursor, VS Code, Gemini CLI and more

Questions about qcad-mcp

How do you install and run qcad-mcp in Claude Code?

Initialize repository dependencies with just bootstrap, then start the runtime using start.ps1. The server exposes its API on port 11966 for MCP client connections.

What does qcad-mcp do?

It processes 2D CAD files to calculate floor areas, edit layers, and generate 3D models. The server also serves a web dashboard and REST endpoints for file depot management.

Do you need QCAD Pro to use this server?

No, parsing DXF files and exporting STL meshes runs entirely on the open-source ezdxf engine. You only need QCAD Pro if your workflow demands DWG conversions or ECMAScript execution.

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