Substack MCP Server

Package (npm 1.3.0)

npx -y @conorbronsdon/substack-mcp@1.3.0

Or add to your MCP client config:

{
  "mcpServers": {
    "substack-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@conorbronsdon/substack-mcp@1.3.0"
      ],
      "env": {
        "SUBSTACK_PUBLICATION_URL": "<YOUR_VALUE>",
        "SUBSTACK_SESSION_TOKEN": "<YOUR_VALUE>",
        "SUBSTACK_USER_ID": "<YOUR_VALUE>"
      }
    }
  }
}

• SUBSTACK_PUBLICATION_URL required — Your Substack publication URL (e.g., https://yourblog.substack.com)
• SUBSTACK_SESSION_TOKEN required secret — connect.sid cookie value from your Substack session
• SUBSTACK_USER_ID required — Your Substack user ID