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Substack MCP Server

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

JavaScript

★ 74 stars Last pushed 2026-09-03 License: MIT

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Review any command before running it. Package names and URLs come from the server's own registry entry.

Package (npm 1.3.2)

npx -y substack-mcp@1.3.2

Or add to your MCP client config:

{
  "mcpServers": {
    "substack-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "substack-mcp@1.3.2"
      ],
      "env": {
        "SUBSTACK_PUBLICATION_URL": "<YOUR_VALUE>",
        "SUBSTACK_SESSION_TOKEN": "<YOUR_VALUE>",
        "SUBSTACK_USER_ID": "<YOUR_VALUE>"
      }
    }
  }
}

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

Package (oci)

docker run -i --rm docker.io/marcomoauro/substack-mcp:v1.3.2

Or add to your MCP client config:

{
  "mcpServers": {
    "substack-mcp": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "docker.io/marcomoauro/substack-mcp:v1.3.2"
      ],
      "env": {
        "SUBSTACK_PUBLICATION_URL": "<YOUR_VALUE>",
        "SUBSTACK_SESSION_TOKEN": "<YOUR_VALUE>",
        "SUBSTACK_USER_ID": "<YOUR_VALUE>"
      }
    }
  }
}

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