Obsidian Brain MCP Server

Standalone Node MCP server: semantic search + knowledge graph + vault editing for Obsidian, no plugin required.

The short version

A standalone Node MCP server that gives Claude (and any other MCP client) semantic search + knowledge graph + vault editing over an Obsidian vault. Runs as one local stdio process — no plugin, no HTTP bridge, no API key, nothing hosted. Your vault content never leaves your machine.

• Works without Obsidian running — — unlike Local REST API-based servers, obsidian-brain reads .md files directly from disk. Obsidian can be closed; your vault is just a folder
• No Local REST API plugin required — — nothing to install inside Obsidian for the core experience
• Chunk-level semantic search with RRF hybrid retrieval — — embeddings at markdown-heading granularity, fused with FTS5 BM25 via Reciprocal Rank Fusion. Finds the exact chunk, ranks on meaning
• The only Obsidian MCP server with PageRank + Louvain + graph analytics — — ask for your vault's most influential notes, bridging notes, theme clusters. Nobody else ships this
• Ollama provider for high-quality local embeddings — — switch to qwen3-embedding:0.6b, nomic-embed-text, bge-m3, etc. with one env var
• All in one npx install — — no clone, no build, no API key, no hosted endpoint. Vault content never leaves your machine

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.