CAD-MCP

daobataotie/CAD-MCP is ranked 3,189 among these 8 peers; MichaelKinsy/PiG is ranked 3,192.

This project combines natural language processing and CAD automation technology, enabling users to create and modify CAD drawings through simple text commands without manually operating the CAD interface. Features CAD Control Functions **Multiple CAD Software Support**: Supports mainstream CAD software including AutoCAD, GstarCAD (GCAD) and ZWCAD **Basic Drawing Functions**: Line drawing Circle drawing Arc drawing Ellipse drawing Rectangle drawing Polyline drawing Text addition Pattern filling Dimension annotation **Query Functions (the AI can see the actual drawing content)**: List all layers

List entities in model space (returns editable entity handles) Query detailed entity properties by handle (coordinates/radius/text content, etc. ) Screenshot of the CAD window for preview **Editing Functions**: erase, move, rotate, scale, copy, mirror, offset, array (linear/polar), undo/redo **Layer Management**: Create and switch layers, query layer states **Drawing Management**: New / open / close / save drawings (DWG/DXF) **Block Operations**: Create, insert, and list blocks **Command Passthrough**: Execute any CAD command via (an escape hatch for everything else) MCP

Protocol Features **Structured Output**: All tools return with an that clients can parse directly **Tool Annotations**: Query tools are marked ; destructive operations are marked for client confirmation policies **Progress Notifications**: Long-running operations (CAD startup, saving) send message notifications to the client **Dual Transport Modes**: (local, single client) and (remote / multiple clients sharing one CAD instance) **Error Semantics**: Input validation errors are returned as tool errors, enabling model self-correction Natural Language Processing Functions (legacy interface) **Command Parsing**: Parse natural

language instructions into CAD operation parameters **Color Recognition**: Extract color information from text and apply it to drawing objects **Shape Keyword Mapping**: Support recognition of various shape description words **Action Keyword Mapping**: Recognize various drawing and editing actions Demo The following is the demo video. Installation Requirements Dependencies System Requirements Windows operating system Installed CAD software (AutoCAD, GstarCAD, or ZWCAD) Python 3. 10+ Configuration The configuration file is located at and contains the following main settings: **server**: Server name, version

, and transport settings : Transport mode, (default, local single client) or (remote / multi-client) / : Listen address and port for Streamable HTTP mode (can also be overridden via / command-line arguments) **cad**: : CAD software type (AutoCAD, GCAD, GstarCAD, or ZWCAD) : CAD startup waiting time (seconds) : Command execution delay (seconds) **output**: Output file settings Usage Starting the Service Connect from an MCP Client The server uses transport by default, so the same JSON config works for any MCP client (Claude Desktop, Cursor, Windsurf

, TRAE, etc. Add it to your client's MCP server config file (e. , Cursor's ), replacing the path with your own: For Streamable HTTP mode, point the client to instead. MCP Inspector Service API The server provides the following tools (35 in total): **Basic drawing:** : Draw a line : Draw a circle : Draw an arc : Draw an ellipse : Draw a polyline : Draw a rectangle : Add text : Draw a hatch pattern : Add linear dimension **Query:** : List all layers : List entities in model space (returns

editable handles) : Query detailed entity properties by handle : Capture the CAD window to confirm drawing results **Editing:** / / / : Erase / move / rotate