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

# Using Claude with Marrow MCP

# Using Claude with Marrow MCP

This guide shows how to connect **Marrow MCP** to **Claude** as a custom connector. You can then query your Marrow workspace directly from Claude.

<img src="https://mintlify.s3.us-west-1.amazonaws.com/hologrowinc/hub-files/mcp/marrow/claude-connector.png" alt="Claude connector setup steps" />

## Prerequisites

* A Marrow account with your Amazon connections set up.
* Access to `claude.ai` in a web browser.
* Permission to add connectors in your Claude workspace. Team or business workspaces often require admin access.

> During setup you will be redirected to Marrow to sign in and approve access.

## Step 1: Copy the Marrow MCP URL

Copy this URL: `https://mcp.marrow.com/mcp/v1`.

## Step 2: Add Marrow as a custom connector in Claude

1. Go to `claude.ai`.
2. Open **Customize** → **Connectors**.
3. Select the plus (+) icon, then select **Add custom connector**.
4. Set **Name** to `Marrow`.
5. In **Remote MCP Server URL**, paste the URL from Step 1.
6. When prompted, sign in to Marrow and approve access.
7. Select **Add**.

## Step 3: Test the connection

1. Start a new chat in Claude.
2. Send a prompt that uses Marrow data, for example:

```text theme={null}
Show me my Amazon Seller Central sales for the last 7 days.
```

If Claude returns real data, you are connected.

## Security

* Claude uses an OAuth-style sign-in and approval flow to access Marrow.
* Access is scoped to the permissions of the Marrow user who approved the connection.
* To revoke access, go to [Marrow MCP Integrations](https://app.marrow.com/integrations/mcp) or remove the connector from Claude.

## Troubleshooting

### I don't see *Connectors* or *Add custom connector*

* Your Claude plan may not support custom connectors, or your workspace permissions may not allow adding them.
* If you are in a managed workspace, ask your Claude admin to enable connectors or add Marrow on your behalf.

### Sign-in or approval keeps looping

* Allow pop-ups and redirects for `claude.ai` and Marrow.
* Disable strict tracking protection or browser extensions that block third-party cookies.
* Retry in a private window to rule out extension issues.

### Claude says "not authorized" or Marrow returns an auth error

* Re-add the connector and complete the Marrow approval prompt again.
* Make sure you are signed in to the correct Marrow workspace and user.
* If needed, revoke and reauthorise access from [Marrow MCP Integrations](https://app.marrow.com/integrations/mcp).

***

## Marrow MCP resources

Check the following resources for more information:

* MCP server URL: `https://mcp.marrow.com/mcp/v1`
* [Interactive Data Scheme](/hub/data-scheme)
* Data Scheme JSON: [https://api.marrow.com/api/v1/spec/data-scheme](https://api.marrow.com/api/v1/spec/data-scheme)
* Need help? Use the [contact form](https://forms.clickup.com/9015200219/f/8cnj2ev-38615/AOYF9I35QFOXWJQXIG?type=Form\&source=hub-mcp-claude-docs)