Second brain en Obsidian: notas, conceptos como nodos, resurfacing y salud del grafo. En castellano.
Second MCP server exists for a simple reason — assistants are far more useful when they can act on Second directly instead of describing what you should do. Second brain en Obsidian: notas, conceptos como nodos, resurfacing y salud del grafo. En castellano.
Tu segundo cerebro, en tu Obsidian, hablando con tu asistente.
Once Second is connected, these are the calls the assistant has available:
Variable — Qué haceBRAIN_VAULT — La ruta de tu vault (obligatoria; también vale como primer argumento)BRAIN_MODO — Motor de resurgir: lexico o ragBRAIN_RAG_UMBRAL — A partir de cuántas notas puede sugerirse el modo ragYou will need one environment variable: BRAIN_VAULT. Keep credentials in your client's env block or a secrets manager rather than in a file you might commit.
@toportal/second-brain-mcp on npm is all you need. Most clients run it directly, so configuration is a few lines and a restart.
Plenty of AI and media services servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. Second's toolset — Variable, BRAIN_VAULT, BRAIN_MODO and 1 more — is a fair guide to whether it matches your workflow. It is maintained by Portaltocoding; worth a glance at recent repository activity before you build anything load-bearing on it.
We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.
| Tool | What it does |
|---|---|
| Variable | Qué hace |
| BRAIN_VAULT | La ruta de tu vault (obligatoria; también vale como primer argumento) |
| BRAIN_MODO | Motor de resurgir: lexico o rag |
| BRAIN_RAG_UMBRAL | A partir de cuántas notas puede sugerirse el modo rag |
Con cualquier otro cliente MCP:
```json
{
"mcpServers": {
"second-brain": {
"command": "npx",
"args": ["-y", "@toportal/second-brain-mcp"],
"env": { "BRAIN_VAULT": "/ruta/a/tu/vault" }
}
}
}Configuration as documented by the project. Restart the client after saving.
| Variable | Description | Required |
|---|---|---|
| BRAIN_VAULT | Configuration value read at startup. | Optional |
Build a programmable telecommunications stack for connecting telephony services with the Internet via a cloud-based utility.
Search built for AI, not humans — semantic web search that returns model-ready content, plus code context.
Answers, not links — delegate questions to Perplexity's search-grounded models and get cited responses back.
Give your assistant a voice — text-to-speech, voice cloning and audio tools from the ElevenLabs API.
Give your assistant a real code sandbox — isolated cloud VMs for actually running the code it writes.
The ML hub in your context window — search models, datasets, papers and run Spaces from the official server.