Grok Arbitragex Amazon FBA Calculator (Amazon.de) get_amazon_referral_fee

Add Arbitragex Amazon FBA Calculator (Amazon.de) to Grok

1. 01

   Open .mcp.json (in your project root) and merge this in. Keep any servers already there.

{
  "mcpServers": {
    "fba-rechner": {
      "type": "http",
      "url": "https://arbitragex.de/mcp"
    }
  }
}

2. 02

   Save the file and restart Grok.

3. 03

   Ask for something get_amazon_referral_fee does. Grok lists the server's tools on connect and calls get_amazon_referral_fee itself — you do not invoke it by name.

4. 04

   If nothing happens, check the server is running and that Arbitragex Amazon FBA Calculator (Amazon.de)'s identifier in your config matches the one above exactly.

Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs

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