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Data and analytics

Substack MCP Server

io.github.marcomoauro/substack-mcp ยท v1.3.2

Manage Substack publishing, subscribers, analytics, reader feeds, comments, and images through MCP.

Website Source code Set it up

Connect Runs on your machine

Terminal
claude mcp add substack-mcp -e SUBSTACK_PUBLICATION_URL=<SUBSTACK_PUBLICATION_URL> -e SUBSTACK_SESSION_TOKEN=<SUBSTACK_SESSION_TOKEN> -e SUBSTACK_USER_ID=<SUBSTACK_USER_ID> -- npx -y [email protected]
claude_desktop_config.json
{
  "mcpServers": {
    "substack-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "SUBSTACK_PUBLICATION_URL": "<SUBSTACK_PUBLICATION_URL>",
        "SUBSTACK_SESSION_TOKEN": "<SUBSTACK_SESSION_TOKEN>",
        "SUBSTACK_USER_ID": "<SUBSTACK_USER_ID>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "substack-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "SUBSTACK_PUBLICATION_URL": "<SUBSTACK_PUBLICATION_URL>",
        "SUBSTACK_SESSION_TOKEN": "<SUBSTACK_SESSION_TOKEN>",
        "SUBSTACK_USER_ID": "<SUBSTACK_USER_ID>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "substack-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "SUBSTACK_PUBLICATION_URL": "<SUBSTACK_PUBLICATION_URL>",
        "SUBSTACK_SESSION_TOKEN": "<SUBSTACK_SESSION_TOKEN>",
        "SUBSTACK_USER_ID": "<SUBSTACK_USER_ID>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
SUBSTACK_PUBLICATION_URL
Required		Full URL of your Substack publication, including https://
SUBSTACK_SESSION_TOKEN
Required, secret		Value of the substack.sid or connect.sid cookie from your authenticated Substack session
SUBSTACK_USER_ID
Required		Numeric user ID returned by Substack's publication_user request

Details

Package[email protected] (NPM, stdio)
Packagedocker.io/marcomoauro/substack-mcp:v1.3.2 (OCI, stdio)
First published3 Sep 2026
Last updated3 Sep 2026
Registry nameio.github.marcomoauro/substack-mcp

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