Substack MCP Server

local MCP server

Installation

Terminal

claude mcp add io-github-conorbronsdon-substack-mcp -e SUBSTACK_PUBLICATION_URL=... -e SUBSTACK_SESSION_TOKEN=... -e SUBSTACK_USER_ID=... -- npx -y @conorbronsdon/substack-mcp

Run in your project folder. Add --scope user to use it everywhere.

Claude Desktop, Cursor & other clients

Add to claude_desktop_config.json or .cursor/mcp.json.

{
  "mcpServers": {
    "io-github-conorbronsdon-substack-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@conorbronsdon/substack-mcp"
      ],
      "env": {
        "SUBSTACK_PUBLICATION_URL": "...",
        "SUBSTACK_SESSION_TOKEN": "...",
        "SUBSTACK_USER_ID": "..."
      }
    }
  }
}

Fill in the environment variables with your own credentials.

Summary

Substack drafts, Notes, analytics and consented subscribers. Long-form posts stay draft-only.

Questions

Substack MCP Server is a local MCP server distributed as the npm package @conorbronsdon/substack-mcp.

Run: claude mcp add io-github-conorbronsdon-substack-mcp -e SUBSTACK_PUBLICATION_URL=... -e SUBSTACK_SESSION_TOKEN=... -e SUBSTACK_USER_ID=... -- npx -y @conorbronsdon/substack-mcp

Run: codex mcp add io-github-conorbronsdon-substack-mcp --env SUBSTACK_PUBLICATION_URL=... --env SUBSTACK_SESSION_TOKEN=... --env SUBSTACK_USER_ID=... -- npx -y @conorbronsdon/substack-mcp

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