Obsidian Brain

io.github.sweir1/obsidian-brain

Obsidian MCP server: semantic search, knowledge graph, and vault editing. No plugin required.

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Connect this server

Add this to your MCP client config — claude_desktop_config.json (Claude Desktop) or .cursor/mcp.json (Cursor).Suits: Claude Desktop · Cursor.

{
  "mcpServers": {
    "obsidian-brain": {
      "command": "npx",
      "args": [
        "-y",
        "obsidian-brain@1.7.24"
      ],
      "env": {
        "VAULT_PATH": "<your VAULT_PATH>",
        "EMBEDDING_PRESET": "english",
        "EMBEDDING_PROVIDER": "transformers",
        "OLLAMA_BASE_URL": "http://localhost:11434",
        "OBSIDIAN_BRAIN_WATCH_DEBOUNCE_MS": "3000",
        "OBSIDIAN_BRAIN_COMMUNITY_DEBOUNCE_MS": "60000",
        "OBSIDIAN_BRAIN_TOOL_TIMEOUT_MS": "30000"
      }
    }
  }
}
Environment variables
  • VAULT_PATHrequiredAbsolute path to your Obsidian vault (or any folder of .md files).
  • EMBEDDING_PRESETPreset name: english (default, bge-small-en-v1.5), english-fast, english-quality, multilingual, multilingual-quality, multilingual-ollama. Ignored when EMBEDDING_MODEL is set.
  • EMBEDDING_PROVIDEREmbedding backend. 'transformers' (local, default) or 'ollama' (requires a running Ollama server).
  • OLLAMA_BASE_URLBase URL of a local Ollama server. Only used when EMBEDDING_PROVIDER=ollama.
  • OBSIDIAN_BRAIN_WATCH_DEBOUNCE_MSPer-file reindex debounce for the live watcher, in milliseconds.
  • OBSIDIAN_BRAIN_COMMUNITY_DEBOUNCE_MSGraph-wide community-detection (Louvain) debounce for the live watcher, in milliseconds. Louvain is the only expensive op — batching it prevents per-edit CPU spikes.
  • OBSIDIAN_BRAIN_TOOL_TIMEOUT_MSPer-tool-call timeout in milliseconds. Tools exceeding this return an MCP error instead of hanging.

A starting point — check the repository for exact arguments and setup. Restart your client after editing the config.

Category
Developer Tools
Version
1.7.24
Registry
active
Published
5/16/2026

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