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

# Claude

> Use Variable from Claude on the web, desktop, and mobile through a custom connector.

Add Variable to Claude once as a **custom connector**, and it's available in every Claude app you sign in to — [claude.ai](https://claude.ai), Claude Desktop, and the mobile apps.

## Before you start

* **MCP is enabled for your Variable account.** Check the **MCP URL** row in [Company settings](https://app.variable.global/company). If it shows **Not enabled**, [email us](mailto:hello@variable.co?subject=MCP%20Access).

## Add the connector

**1. Open connector settings**

Go to **Customize** -> **Connectors**, select **+ Add**, then **Add custom connector**.

If your organization manages connectors centrally, an owner adds it from **Organization settings** -> **Connectors** instead: select **Add**, hover over **Custom**, and select **Web**.

**2. Enter Variable's details**

Name the connector `Variable`, enter `https://app.variable.global/mcp` as the URL, and select **Continue**. Keep the authentication settings Claude detects and select **Continue** again.

**3. Choose how people sign in**

| Field | Value |
| - | - |
| **Authentication** | **Sign in when needed** |
| **OAuth client** | **Register automatically** |
| **Request headers** | Leave empty |

Variable registers each client automatically and doesn't issue client secrets, so **Register automatically** is the option that works. Select **Add**.

**4. Connect your Variable account**

If an owner added Variable for your organization, go to **Customize** -> **Connectors**, find Variable (labelled **Custom**), and select **Connect**. Otherwise, Claude asks you to sign in the first time it calls Variable.

A Variable sign-in window opens: sign in, pick the account to connect, and select **Allow**.

## Use it in a conversation

Connectors are switched on per conversation. Select the **+** button at the lower left of the chat, open **Connectors**, and turn on Variable. Then try *"list my Variable accounts"*.

Claude asks before it calls a tool. Variable's tools can create, update, and delete data, so choose **Allow always** only for tools you're happy for Claude to run without asking.

To change the connector's URL or sign-in settings, remove it from **Connectors** and add it again.

## Troubleshooting

| Symptom | Likely cause |
| - | - |
| The connector can't be added, or sign-in fails | Check the URL is exactly `https://app.variable.global/mcp` and **OAuth client** is **Register automatically**. Remove the connector and add it again to change either. |
| Members can't find Variable | An owner hasn't added it in **Organization settings** -> **Connectors** yet, or the member is looking somewhere other than **Customize** -> **Connectors**. |
| Claude answers without using Variable | Variable is switched off for this conversation. Turn it on from **+** -> **Connectors**. |

For anything else, see the general [troubleshooting table](https://docs.variable.global/mcp/configuration#troubleshooting). Anthropic's [custom connector guide](https://support.claude.com/en/articles/11175166-get-started-with-custom-connectors-using-remote-mcp) covers who can add connectors.


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