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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. Claude connector setup steps

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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.

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Step 1: Copy the Marrow MCP URL

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

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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.

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Step 3: Test the connection

  1. Start a new chat in Claude.
  2. Send a prompt that uses Marrow data, for example:
If Claude returns real data, you are connected.

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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 or remove the connector from Claude.

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Troubleshooting

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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.

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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.

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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.

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Marrow MCP resources

Check the following resources for more information: