Second Brain MCP Server: Install & Setup

Install Second Brain in Claude Code

Claude Code

claude mcp add second-brain -e BRAIN_VAULT=... -- npx -y @toportal/second-brain-mcp

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

{
  "mcpServers": {
    "second-brain": {
      "command": "npx",
      "args": [
        "-y",
        "@toportal/second-brain-mcp"
      ],
      "env": {
        "BRAIN_VAULT": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the Second Brain MCP server do?

Second brain en Obsidian: notas, conceptos como nodos, resurfacing y salud del grafo. En castellano.

Is the Second Brain MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does Second Brain run locally or remotely?

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

How do I add Second Brain to Claude Code?

Run: claude mcp add second-brain -e BRAIN_VAULT=... -- npx -y @toportal/second-brain-mcp

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