状态：积极开发

CadGPT将ChatGPT转变为以绘图为中心的AutoCAD执行环境。ChatGPT依然是推理的表面;CadGPT提供本地控制平面、绘图绑定、AutoLISP/作业编排、注册表发现、诊断、AutoCAD插件和CAD MCP桥接。

AutoCAD插件可以将ChatGPT托管在可停靠的调色板中，但插件界面不是CAD授权。CadGPT的运行时/工作绑定仍然是权威的。

当前产品合同

• 通过 CadGPT/CG 插件或字面 @cadgpt / @cg 进行明确启动;
• 一件活动作品装订一幅图纸;
• 当前CAD数据直接从装订图纸读取;
• 当CG激活并绑定绘图时，诸如绘制/重绘/创建/添加/修改/vẽ / vẽ lại / tạo / sửa等请求默认针对AutoCAD;
• 外部图像生成仅在用户明确要求图像/渲染/插图而非CAD输出时使用;
• AutoCAD 从未被 MCP 运行时隐式启动;
• CAD MCP 处于休眠状态，直到实际需要 CAD;
• 受管理的用户/运行时状态位于 %LOCALAPPDATA%\CadGPT;
• 文件变异使用批准根节点内的规范绝对路径;

CadGPT

Status: Active development

CadGPT turns ChatGPT into a drawing-centric AutoCAD execution environment. ChatGPT remains the reasoning surface; CadGPT provides the local control plane, drawing binding, AutoLISP/Job orchestration, registry discovery, diagnostics, the AutoCAD add-in, and the CAD MCP bridge.

ChatGPT / CadGPT plugin
        ⇅
OpenAI Secure MCP Tunnel
        ⇅
CadGPT slim admission/control plane
        ↓
WorkRegistration + ToolLease
   ├── FILE
   └── CAD / HYBRID
          ↓
        CAD MCP
          ↓
       AutoCAD

The AutoCAD add-in can host ChatGPT in a dockable palette, but the add-in UI is not CAD authority. CadGPT runtime/work binding remains authoritative.

Current product contract

• explicit launch through the CadGPT/CG plugin or literal @cadgpt / @cg;
• one active work binds one drawing;
• current CAD facts are read fresh from the bound drawing;
• while CG is active with a bound drawing, requests such as draw / redraw / create / add / modify / vẽ / vẽ lại / tạo / sửa target AutoCAD by default;
• external image generation is used only when the user explicitly asks for an image/render/illustration rather than CAD output;
• AutoCAD is never launched implicitly by the MCP runtime;
• CAD MCP sleeps until actual CAD demand;
• managed user/runtime state lives under %LOCALAPPDATA%\CadGPT;
• file mutation uses canonical absolute paths inside approved roots;
• production runtime does not self-modify CAD MCP source;
• Revit development is not part of this repository. RevitGPT is maintained as a separate project/repository.

Launch and drawing binding

CadGPT reads the lightweight tray snapshot before starting full CAD MCP.

CG / @cg / @cadgpt
├─ 0 drawings
│  → Welcome screen
│  → WORK IDLE
│
├─ exactly 1 drawing
│  → auto-bind that drawing
│  → Workspace Ready
│
└─ 2+ drawings
   → Welcome screen + drawing list
   → user chooses exactly one
   → Workspace Ready

cg/list refreshes the tray-backed drawing list and does not wake full CAD MCP by itself.

A bound workspace follows:

1 work = 1 drawing

CadGPT never treats ambient AutoCAD ActiveDocument as drawing authority.

Commands

cg/       full command menu
cg/list   refresh open drawings
cg/cl     create or repair Lisp
cg/cj     create or repair Job
cg/job    list registered Jobs
cg/update edit one selected existing Job or Lisp
cg/kug    update global HVAC knowledge (KUG)
cg/kud    update bound-drawing HVAC knowledge (KUD)
cg/mcp    CAD MCP development workflow (development builds only)
cg/help   help
cg/stop   stop current work

@cadgpt / @cg activate CadGPT; they are not the CLI namespace.

HVAC domain Knowledge Updater (KUG / KUD)

The Knowledge Updater stores HVAC workflow/domain knowledge separately from CadGPT internal CAD API, AutoLISP and MCP development knowledge.

• KUG / cg/kug — global reusable HVAC practice in