daobataotie/CAD-MCP

pip install pywin32>=228 mcp>=0.1.0 pydantic>=2.0.0 typing>=3.7.4.3 (see requirements.txt)
python src/server.py (starts the service)

Usage

• •Set the CAD software type in src/config.json (cad.type: AutoCAD/GCAD/GstarCAD/ZWCAD, startup_wait_time, command_delay)
• •Add to claude_desktop_config.json with command 'python' and args pointing to your path to src/server.py (Claude Desktop and Windsurf)
• •Debug with MCP Inspector: npx -y @modelcontextprotocol/inspector python C:\cad-mcp\src\server.py
• •Call API functions: draw_line, draw_circle, draw_arc, draw_polyline, draw_rectangle, draw_text, draw_hatch, add_dimension, save_drawing (DWG), process_command (natural language)

Key features

• ✓Supports AutoCAD, GstarCAD (GCAD), and ZWCAD
• ✓Basic drawing tools: line, circle, arc, rectangle, polyline, text, hatch pattern, linear dimension
• ✓Layer management: create and switch layers; save current drawing as DWG
• ✓Natural language processing: command parsing, color recognition from text, shape keyword mapping, action keyword mapping

Caveats

• ⚠Windows-only — requires pywin32 for the Windows COM interface and an installed CAD application (AutoCAD, GstarCAD, or ZWCAD)
• ⚠Controlled by config.json (server name/version, CAD type, output directory); drawing output defaults to ./output/cad_drawing.dwg