Second Brain MCP Server

by portaltocodingio.github.Portaltocoding/second-brain-mcpv0.1.1

Servidor MCP para un second brain en Obsidian: lecturas, notas permanentes, conceptos como nodos reales, resurfacing y salud del grafo. En castellano.

0Node.jsstdioofficial registry

context tax

queued

security

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cold start

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freshness

Maintained45d ago

Install Second Brain MCP server

claude mcp add second-brain -e BRAIN_VAULT='<brain-vault>' -- npx -y @toportal/second-brain-mcp

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

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

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

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

{
  "servers": {
    "second-brain": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@toportal/second-brain-mcp"
      ],
      "env": {
        "BRAIN_VAULT": "<brain-vault>"
      }
    }
  }
}

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

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

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

Configuration

Variable	Required	Secret	Description
BRAIN_VAULT	yes	—	Ruta al vault de Obsidian (carpeta de Markdown)
BRAIN_MODO	—	—	Motor de resurgir: lexico o rag

Freshness

Maintained — last maintenance signal 45d ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-08-25 · 45d ago · GitHub
Latest release
2026-08-18 · 52d ago · GitHub · v0.1.2
Package published
no data · npm/PyPI
Registry entry updated
2026-07-12 · 3mo ago · official registry · v0.1.1

FAQ

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

Run: claude mcp add second-brain -e BRAIN_VAULT='<brain-vault>' -- npx -y @toportal/second-brain-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Second Brain require an API key?

Yes. It expects BRAIN_VAULT.

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

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

›Is Second Brain in the official MCP registry?

Yes, as io.github.Portaltocoding/second-brain-mcp.