Connect the ChatGPT desktop app to VCAD

Let the ChatGPT app on your computer read the session you have open in VCAD and suggest changes for you to accept, or do the work automatically.

Once you are done, vcad is switched on in the list of servers in the ChatGPT desktop app, and the AI box in VCAD says Connected.

What you need before you start

Click the account menu in the top right corner of VCAD.
Choose Settings.
Click the Modules tab.
Click the switch next to AI-Bridge.
Click the copy button inside the field with the address https://mcp.vcad.dk/mcp. The button briefly turns into a tick, and the address is copied.
Under AI Mode, choose whether ChatGPT asks first: with Ask every change waits for you to accept it, and with Auto it is in the drawing at once.

Click the circle with your initials in the bottom left corner of the ChatGPT app.
Choose Settings.
Choose Plugins in the list on the left.
Click the MCPs tab.
Click Add in the top right corner.
Choose Add MCP server.
Fill in the form:
- Name: vcad
- Type: Streamable HTTP
- URL: paste the address you copied, https://mcp.vcad.dk/mcp
Click Save at the bottom of the form. vcad is in the list of servers with an Authenticate button next to it.

Click Authenticate next to vcad. Your browser opens the VCAD portal on the Authorize access page with your company's name.
Tip: If the VCAD portal asks you to sign in, use your VCAD login: the email and password you use in VCAD.
Click Allow. The portal sends the approval back to the ChatGPT app on your computer.
Go back to the ChatGPT app. Authenticate is gone, and the switch next to vcad is on.
Tip: If Authenticate is still there, click it again, sign in to the VCAD portal and click Allow.

Keep the session open in VCAD. The AI box in the bottom right corner says Connected.
Click the house in the top left corner of the ChatGPT app. The list next to it says ChatGPT or Codex at the top.
If it says ChatGPT, click it.
Choose Codex.
Ask Codex for something in plain words, for example "Find every point with the code WELL, put a well on each of them and draw the pipe between them with its slope" or "Set all points on layer Terrain to elevation 2.5". With AI Mode on Auto, the change is in the drawing at once. With Ask, it appears in VCAD as an AI change proposal.
If AI Mode is on Ask, click Zoom to change.
Click Accept. The change is in the drawing.
Tip: If you do not want the change, click Reject instead.

What you see	What to do
Codex cannot get hold of your session	Open a session in VCAD. Check that AI-Bridge is on and that the AI box says Connected.
VCAD's Settings has no Modules tab or no AI bridge	AI comes with a VCAD Pro license. Ask your VCAD administrator to give you one. If you are the administrator, choose Administration when you sign in, and tick the box next to the user under Users in the column for Pro.
AI module not enabled	You do not have a VCAD Pro license. Do as in the row above.
Reconnecting…	VCAD has lost its connection and keeps trying again. Check your internet, and reload the page if it stays.

Stuck? Write to us at info@vcad.dk

Updated 11 November 2026