Best MCP servers for notes, docs & knowledge
Short answer
Use the official Notion server if you live in Notion; for local-first notes, an Obsidian server keeps everything on your machine. Add a memory server only if you genuinely need persistence across sessions — and keep your expectations modest; it's a key-value store, not understanding.
Knowledge work is where the local-vs-remote and official-vs-community choices actually bite. Your notes are sensitive, so I weight privacy and maintenance heavily here. Notion is a hosted product — use its first-party server. Obsidian is local-first — use a server that keeps it that way. And a candid take on 'memory' servers: they're useful for carrying a few facts across sessions, but they're closer to a notepad than to the long-term memory the name implies.
The picks
Official. If your knowledge base is Notion, the first-party server wins on auth and on tracking Notion's API — don't use a community wrapper for your second brain.
Config & setup
For local-first note-takers: lets the agent read and search your Obsidian vault while everything stays on your machine. Privacy by construction.
Config & setup
The reference memory server for cross-session persistence. Good for 'remember these facts', honest about being a simple store rather than real long-term memory.
Config & setupWhat to skip
Avoid giving a notes server broad write access if you also run a web-scraping server in the same session — your knowledge base is exactly what you don't want an injected agent editing. And don't expect a 'memory' server to make the model understand your whole vault; for that you want retrieval over the notes, not a key-value memory.
FAQ
What's the best MCP server for Notion?
Notion's official first-party MCP server. For a hosted product like Notion, the vendor's own server beats community wrappers on authentication and on keeping up with API changes.
Can MCP give an AI long-term memory?
Partly. A memory server persists facts across sessions, but it's closer to a notepad than true long-term memory. For understanding a large knowledge base, retrieval over your notes works better than a key-value memory store.