Zettelkasten MCP

Zettelkasten MCP brings the classic slip-box method into Claude. It stores atomic notes as markdown files, indexes them in SQLite, and lets you link ideas semantically rather than hierarchically. The server exposes tools for creating notes, searching by content or tags, and following links between related thoughts. I've used it for tracking research threads across multiple projects, and the semantic linking is genuinely useful when you're trying to remember where you stashed that half-formed idea about API design three months ago. The workflow is straightforward: create a note with a unique ID, tag it, then link it to related notes using explicit references. The SQLite index makes full-text search fast enough that you don't need to remember exact titles. I'd reach for this when building a personal knowledge base that needs to survive beyond a single project, especially if you're already thinking in terms of atomic ideas rather than nested folders. Quirks: it's opinionated about note structure, which is the point but might chafe if you prefer freeform chaos. The markdown files live wherever you point the config, so you can version-control them or sync via Dropbox. No built-in conflict resolution if you're editing the same note in multiple places. The semantic links are manual, not AI-inferred, which keeps things predictable but means you do the conceptual work yourself. This isn't for casual note-taking. If you just want to jot down meeting notes or shopping lists, use Apple Notes. Zettelkasten is for people who think by writing and need a system that rewards revisiting old ideas. Researchers, technical writers, and anyone building a long-term knowledge graph will get mileage out of this. If you've never heard of the Zettelkasten method, read about it first before installing, because the server won't teach you the practice.