Use OpenClaw with Marrow MCP

This guide shows you how to set up OpenClaw from scratch and connect it to the Marrow MCP server. Your AI assistant can then query live Amazon seller data using natural language.

What you will build

You will build a working OpenClaw gateway that connects to Marrow’s MCP server. This gives your AI assistant access to Amazon seller accounts, order history, inventory levels, Sponsored Products performance, and sales reports.

Prerequisites

A machine running macOS, Linux, or Windows with WSL2
curl available in your terminal
An internet connection with outbound HTTPS access

Step 1: Install OpenClaw

Follow the official OpenClaw install guide for your platform. Once installed, confirm everything is working:

openclaw --version
openclaw doctor

Fix any issues reported by openclaw doctor before continuing.

Step 2: Get your keys

You need two keys: one for Marrow and one for an LLM provider.

Marrow MCP key

Go to app.marrow.com and create an account.
Purchase a subscription.
Navigate to Integrations > MCP.
Click MCP Key, give it a name and expiry date, then click Create.
Copy the key. You will not be able to see it again.

LLM provider key

OpenClaw needs a large language model to reason and respond. The default is OpenAI. Get a key at platform.openai.com or configure another provider supported by OpenClaw. Export the Marrow MCP key in your shell so the commands below can use it:

export MARROW_MCP_KEY=marrow_mcp_your_actual_key_here

Step 3: Register Marrow MCP in OpenClaw

With your Marrow key loaded, register the MCP server:

openclaw mcp set marrow "{
  \"url\": \"https://mcp.marrow.com/mcp/v1\",
  \"transport\": \"streamable-http\",
  \"headers\": {
    \"marrow-mcp-key\": \"$MARROW_MCP_KEY\"
  }
}"

Confirm that the registration was saved:

openclaw mcp list
openclaw mcp show marrow

Step 4: Start the gateway

If the gateway is not running, start it:

openclaw gateway start

If it was already running before you added the Marrow MCP server, restart it:

openclaw gateway restart

Check status and logs if anything looks wrong:

openclaw gateway status
openclaw gateway logs

Step 5: Verify the setup

Send a test message through whichever channel you have connected:

Use Marrow to show my sellers registered on Amazon.com

If OpenClaw returns seller data, the integration is working.

Example prompts

Use case	Prompt
List sellers	`Use Marrow to show my sellers registered on Amazon.com`
Active listings	`Use Marrow to list all my active Amazon product listings`
Inventory check	`Use Marrow to show current inventory levels for all my SKUs`
Weekly sales snapshot	`Use Marrow to show my sales for the last 7 days for Seller A`
PPC campaign data	`Use Marrow to show Sponsored Products campaign performance for the last 30 days for Seller A.`
Top ASINs by spend	`Use Marrow to prepare a report with the top 5 child ASINs by spend for the last month for Seller A`

Troubleshooting

Marrow tools do not appear in OpenClaw

Verify the server is registered: openclaw mcp show marrow
Restart the gateway after adding the MCP server: openclaw gateway restart
Run diagnostics: openclaw doctor

Authorization errors

Confirm your MARROW_MCP_KEY is correct and has not expired.
Regenerate the key at app.marrow.com under Integrations > MCP if needed.

No sellers or data returned

Log in to app.marrow.com and verify that your Amazon seller accounts are connected and data sync is active.
Ads API data may take up to 24 hours to appear after initial account connection.

Marrow MCP resources

MCP server URL: https://mcp.marrow.com/mcp/v1
Interactive Data Scheme
Data Scheme JSON: https://api.marrow.com/api/v1/spec/data-scheme

Get Started

Plugins

Trust & Safety

Hologrow Marrow MCP

Use OpenClaw with Marrow MCP

Use OpenClaw with Marrow MCP

What you will build

Prerequisites

Step 1: Install OpenClaw

Step 2: Get your keys

Marrow MCP key

LLM provider key

Step 3: Register Marrow MCP in OpenClaw

Step 4: Start the gateway

Step 5: Verify the setup

Example prompts

Troubleshooting

Marrow tools do not appear in OpenClaw

Authorization errors

No sellers or data returned

Links

Marrow MCP resources

​Use OpenClaw with Marrow MCP

​What you will build

​Prerequisites

​Step 1: Install OpenClaw

​Step 2: Get your keys

​Marrow MCP key

​LLM provider key

​Step 3: Register Marrow MCP in OpenClaw

​Step 4: Start the gateway

​Step 5: Verify the setup

​Example prompts

​Troubleshooting

​Marrow tools do not appear in OpenClaw

​Authorization errors

​No sellers or data returned

​Links

​Marrow MCP resources

Use OpenClaw with Marrow MCP

What you will build

Prerequisites

Step 1: Install OpenClaw

Step 2: Get your keys

Marrow MCP key

LLM provider key

Step 3: Register Marrow MCP in OpenClaw

Step 4: Start the gateway

Step 5: Verify the setup

Example prompts

Troubleshooting

Marrow tools do not appear in OpenClaw

Authorization errors

No sellers or data returned

Links

Marrow MCP resources