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mcp/harbor
Grok

Picnic for Grok

io.github.mrvdh/picnic-mcp

Search products, fill the cart and pick a delivery slot at the online supermarket Picnic

client:Grok transport:stdio runtime:npm

Install Picnic in Grok

.mcp.json (in your project root)

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{
  "mcpServers": {
    "picnic-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "picnic-mcp"
      ],
      "env": {
        "PICNIC_AUTH_KEY": "<PICNIC_AUTH_KEY>",
        "PICNIC_COUNTRY_CODE": "<PICNIC_COUNTRY_CODE>",
        "PICNIC_MCP_TOOLS": "<PICNIC_MCP_TOOLS>"
      }
    }
  }
}

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

Picnic in other clients

Picnic MCP server