> ## Documentation Index
> Fetch the complete documentation index at: https://editor.pascal.app/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Connect Pascal to Claude

> Sign in to Pascal from Claude, Claude Desktop or Claude Code so Claude can read and edit your hosted projects.

Connect Pascal to Claude and Claude can open your hosted Pascal projects, read what is in
them, and create or change walls, rooms, doors, windows, roofs, stairs and furniture.
Changes are saved to the same projects you open in the
[Pascal editor](https://editor.pascal.app), so you can watch Claude work and continue by
hand.

You sign in once with your Pascal account. There is no API key to copy.

## What you need

* A Pascal account with a verified email address.
* A Claude plan that lets you add connectors. On a Team or Enterprise plan, an
  organization Owner may need to add Pascal for the organization first; each member
  then connects their own Pascal account.

## Connect in Claude or Claude Desktop

1. In Claude, open **Customize**, then **Connectors**, and choose **Add custom connector**.

2. Enter the server URL:

   ```text theme={null}
   https://editor.pascal.app/api/mcp
   ```

3. Choose **Connect**. A Pascal window opens.

4. Sign in to Pascal, or create an account.

5. Choose the workspace Claude should work in: **Personal projects** or one of your
   organization workspaces.

6. Check that the page says the request comes from **claude.ai**, review the access
   listed, and choose **Allow access**.

7. Return to Claude. Pascal now appears in your connectors.

Ask Claude something like "List my Pascal projects" or "Open my studio project and add a
window to the north wall" to try it.

## Connect in Claude Code

```bash theme={null}
claude mcp add --transport http pascal https://editor.pascal.app/api/mcp
```

Start Claude Code, run `/mcp`, select `pascal` and choose to authenticate. Your browser
opens the same Pascal sign-in and review page. Claude Code returns through a local
address on your computer, such as `127.0.0.1`, so Pascal shows an extra warning:
continue only if you just started the connection from Claude Code yourself.

Claude Code can also use a Pascal API key instead; see
[Connect an AI agent](/docs/developers/mcp#claude-code).

## What Claude can do

Pascal asks you to approve two kinds of access, and the review page lists both:

| Access | What it covers |
| - | - |
| Read projects and room scans | Pascal's read-only tools: listing projects, reading a scene, measuring, checking collisions, reading project files and chats |
| Create, edit, save, and delete projects | Tools that change your work, such as adding walls or furniture, saving, or removing a project from your listings |

Each Pascal tool tells Claude whether it only reads or can change your work. Claude uses
that to decide when to ask you first; your own Claude permission settings decide the rest.

The connection acts only in the workspace you chose, with your own access to its
projects. It does not let Claude publish projects to the community or change your
account, and Pascal's paid AI services, such as Studio renders, are not offered to Claude.

When Claude asks for a view of the scene and no editor tab has the project open, Pascal
can render the view on its own servers for credits. That happens only if you turn on
**Can spend credits** for Claude under
[Connected apps](https://editor.pascal.app/settings/connected-apps); it is off when you
connect. Keep the project open in the editor and views are free.

## Disconnect

Open [Connected apps](https://editor.pascal.app/settings/connected-apps) in Pascal and
choose **Disconnect** next to Claude. Claude loses access at once. You can also remove the
connector in Claude.

To switch workspaces, disconnect and connect again, choosing the other workspace.

## Troubleshooting

* **"Sign in with a verified personal Pascal account."** Verify your email address in
  Pascal, then connect again. Agent accounts cannot connect to Claude.
* **"This connection has expired or been revoked."** Connect again from Claude. This also
  happens after you disconnect Claude in Pascal.
* **Claude does not see a project.** Check that it belongs to the workspace you chose when
  connecting.

Pascal's [privacy policy](https://editor.pascal.app/privacy) describes the data Pascal
keeps. For help, ask in the [Pascal Discord](https://discord.gg/XRKsDcpqgS).


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