# Connect Claude to VCAD > Let Claude read the session you have open in VCAD and suggest changes for you to accept, or do the work automatically. 5 min · Updated 2026-11-11 · https://vcad.dk/en/help/connect-claude-to-vcad Once you are done, VCAD has a tick in Claude's list of connectors, and the AI box in VCAD says **Connected**. You set it up once: add VCAD on claude.ai and it is there in the Claude desktop app as well, and the other way round. ## What you need before you start - A VCAD Pro license. - A Claude account. ## Turn on the AI bridge in VCAD 1. Click the account menu in the top right corner of VCAD. ![The VCAD account menu open and ringed, with the name and email at the top and Settings, About, Remote support and Sign out below them](https://vcad.dk/help/connect-claude-to-vcad/vcad-account-menu-en.png) 2. Choose **Settings**. 3. Click the **Modules** tab. 4. Click the switch next to **AI-Bridge**. ![Settings on the Modules tab with the AI-Bridge switch on and ringed, the address https://mcp.vcad.dk/mcp next to it and AI Mode on Ask below it](https://vcad.dk/help/connect-claude-to-vcad/vcad-bridge-on-en.png) 5. 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. 6. Under **AI Mode**, choose whether Claude asks first: with **Ask** every change waits for you to accept it, and with **Auto** it is in the drawing at once. ## Add VCAD to Claude 1. Choose **Customize** in the list on the left in Claude on [claude.ai](https://claude.ai) or in the Claude desktop app. ![The Customize page in Claude with the heading Customize ringed, the Skills, Connectors and Plugins tabs under it and Customize chosen in the list on the left](https://vcad.dk/help/connect-claude-to-vcad/web-customize.png) 2. Choose **Connectors** at the top of the page. The **Connectors** tab opens with **+ Add** in the top right corner. ![The Customize page on the Connectors tab, which is ringed, with + Add in the top right corner](https://vcad.dk/help/connect-claude-to-vcad/web-connectors.png) > If **VCAD** is already under **Yours** with a **Connect** button, your company's Claude admin has added it for you. Click **Connect**. The VCAD portal opens, and you go on at [item 2 under Give Claude access to VCAD](https://vcad.dk/en/help/connect-claude-to-vcad#give-claude-access-to-vcad-2). 3. Click **+ Add**. ![The Add menu open in Claude with Add custom connector, and Add and Add custom connector ringed](https://vcad.dk/help/connect-claude-to-vcad/web-add-custom-connector.png) > On Claude Team or Enterprise, only an owner can add a custom connector. The owner goes to **Organization settings**, **Connectors**, **Add**, **Custom**, **Web** and enters the same address. Everyone else then clicks **Connect** next to VCAD. 4. Choose **Add custom connector**. ![The empty Add custom connector form in Claude with its heading ringed and the empty Name and MCP server URL fields](https://vcad.dk/help/connect-claude-to-vcad/web-wizard-empty.png) 5. Fill in the two fields of the form: - **Name:** `VCAD` - **MCP server URL:** paste the address you copied, `https://mcp.vcad.dk/mcp` ![The Add custom connector form in Claude with VCAD and https://mcp.vcad.dk/mcp in its two fields, which are ringed](https://vcad.dk/help/connect-claude-to-vcad/web-wizard-name-url.png) 6. Click **Continue**. The next page shows that Claude has chosen **Sign in now** and **Register automatically** itself. Leave them as they are. ![The next page of the form, with Sign in now and Register automatically chosen and ringed](https://vcad.dk/help/connect-claude-to-vcad/web-wizard-defaults.png) ## Give Claude access to VCAD 1. Click **Add** at the bottom of the form. The VCAD portal opens on the **Authorize access** page with your company's name. ![The VCAD portal page Authorize access, where Claude asks for access to your VCAD account, with the Deny and Allow buttons](https://vcad.dk/help/connect-claude-to-vcad/portal-consent.png) > If the VCAD portal asks you to sign in, use your VCAD login: the email and password you use in VCAD. 2. Click **Allow**. You are back in Claude, and VCAD has a tick under **Status** in the list of connectors. ![The list of connectors in the Claude desktop app, with the VCAD row and its tick under Status ringed](https://vcad.dk/help/connect-claude-to-vcad/desk-connectors.png) ## Use Claude with VCAD 1. Keep the session open in VCAD. The AI box in the bottom right corner says **Connected**. ![The bottom right corner of VCAD with the AI box, which says Connected, ringed](https://vcad.dk/help/connect-claude-to-vcad/vcad-connected-en.png) 2. In a new chat, ask Claude 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**. ![An AI change proposal in VCAD, ringed, to set 13 points on layer Terrain to Z 2.5, with the buttons Zoom to change, Reject and Accept and the points it changes highlighted in the drawing](https://vcad.dk/help/connect-claude-to-vcad/vcad-proposal-en.png) > The first time, or if Claude does not use VCAD: click **+** in the message box, choose **Connectors** and check that **VCAD** is switched on. 3. If **AI Mode** is on **Ask**, click **Zoom to change**. 4. Click **Accept**. The change is in the drawing. > If you do not want the change, click **Reject** instead. > With the two buttons next to **Connected** in the AI box you can show Claude something in the drawing: one picks objects, the other a point. ## If something doesn't work | What you see | What to do | | --- | --- | | Claude says it cannot reach VCAD | 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. | | VCAD is missing in a chat under + and Connectors | Go to **Customize**, **Connectors**, **Yours**. If VCAD shows **Connect**, click it and sign in again. | | **A connector with this URL already exists in your organization** | VCAD is already added. Close the window and click **Connect** next to VCAD under **Yours**. | Stuck? Write to us at info@vcad.dk