Substack MCP Server: Install & Setup

Install Substack in Claude Code

Claude Code

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

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

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

Replace each ... with your own value.

Frequently asked questions

What does the Substack MCP server do?

Read Substack posts, manage drafts, publish Notes, get comments and upload images; it cannot publish or delete posts.

Is the Substack MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Substack run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Substack to Claude Code?

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

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