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Grok

Substack MCP Server for Grok

io.github.conorbronsdon/substack-mcp

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client:Grok transport:stdio runtime:npm

Install Substack MCP Server in Grok

.mcp.json (in your project root)

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{
  "mcpServers": {
    "substack-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@conorbronsdon/substack-mcp"
      ],
      "env": {
        "SUBSTACK_PUBLICATION_URL": "<SUBSTACK_PUBLICATION_URL>",
        "SUBSTACK_SESSION_TOKEN": "<SUBSTACK_SESSION_TOKEN>",
        "SUBSTACK_USER_ID": "<SUBSTACK_USER_ID>"
      }
    }
  }
}

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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