Substack MCP Server

by conorbronsdonio.github.conorbronsdon/substack-mcpv1.3.0

Safe creator operations for Substack: rich drafts, Notes, analytics, and consented subscribers. Long-form posts stay draft-only; Notes publish immediately.

43Node.jsstdioofficial registry

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Active5d ago

Install Substack MCP server

claude mcp add substack -e SUBSTACK_PUBLICATION_URL='<substack-publication-url>' -e SUBSTACK_SESSION_TOKEN='<substack-session-token>' -e SUBSTACK_USER_ID='<substack-user-id>' -- npx -y @conorbronsdon/substack-mcp

{
  "mcpServers": {
    "substack": {
      "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>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "substack": {
      "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>"
      }
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "substack": {
      "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>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "substack": {
      "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>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
SUBSTACK_PUBLICATION_URL	yes	—	Your Substack publication URL (e.g., https://yourblog.substack.com)
SUBSTACK_SESSION_TOKEN	yes	yes	connect.sid cookie value from your Substack session
SUBSTACK_USER_ID	yes	—	Your Substack user ID

Freshness

Active — last maintenance signal 5d ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-10-04 · 5d ago · GitHub
Latest release
2026-09-24 · 15d ago · GitHub · v1.3.0
Package published
no data · npm/PyPI
Registry entry updated
2026-09-24 · 15d ago · official registry · v1.3.0

FAQ

›How do I install the Substack MCP server in Claude Code?

Run: claude mcp add substack -e SUBSTACK_PUBLICATION_URL='<substack-publication-url>' -e SUBSTACK_SESSION_TOKEN='<substack-session-token>' -e SUBSTACK_USER_ID='<substack-user-id>' -- npx -y @conorbronsdon/substack-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Substack require an API key?

Yes. It expects SUBSTACK_PUBLICATION_URL, SUBSTACK_SESSION_TOKEN, SUBSTACK_USER_ID, of which 1 is a secret.

›Can I use Substack as a remote (hosted) MCP server?

No hosted endpoint is published; it runs locally over stdio.

›Is Substack in the official MCP registry?

Yes, as io.github.conorbronsdon/substack-mcp.