Zettelkastenナレッジマネジメント手法を実装したModel Context Protocol(MCP)サーバーで、Claudeや他のMCP互換クライアントを通じて原子ノートの作成、リンク、探索、統合が可能です。

ツェッテルカステンとは何ですか?

ツェッテルカステン法は、ドイツの社会学者ニクラス・ルーマンによって開発された知識管理システムであり、彼はこれを用いて70冊以上の書籍と数百本の記事を発表しました。この方法は3つの核心原則から成り立っています。

1. 原子性:各音符にはちょうど一つのアイデアが含まれており、知識の単位となります
2. つながり:ノート同士が結びつき、知識のネットワークを作り出し、アイデア間に意味のある関係が生まれます
3. 出現:ネットワークが成長するにつれて、個々のノートが作成された時には明らかではなかった新たなパターンや洞察が現れます

Zettelkastenアプローチが強力なのは、複数の方法で探求を可能にする点にあります。

• 垂直探求:特定のテーマに関わりのある分野のつながりを追いながら、より深く掘り下げる。
• 水平探求:領域を横断するリンクを通って異なる分野間の予期せぬ関係性を発見する。

Zettelkasten MCP Server

A Model Context Protocol (MCP) server that implements the Zettelkasten knowledge management methodology, allowing you to create, link, explore and synthesize atomic notes through Claude and other MCP-compatible clients.

What is Zettelkasten?

The Zettelkasten method is a knowledge management system developed by German sociologist Niklas Luhmann, who used it to produce over 70 books and hundreds of articles. It consists of three core principles:

1. Atomicity: Each note contains exactly one idea, making it a discrete unit of knowledge
2. Connectivity: Notes are linked together to create a network of knowledge, with meaningful relationships between ideas
3. Emergence: As the network grows, new patterns and insights emerge that weren’t obvious when the individual notes were created

What makes the Zettelkasten approach powerful is how it enables exploration in multiple ways:

• Vertical exploration: dive deeper into specific topics by following connections within a subject area.
• Horizontal exploration: discover unexpected relationships between different fields by traversing links that cross domains.

This structure invites serendipitous discoveries as you follow trails of thought from note to note, all while keeping each piece of information easily accessible through its unique identifier. Luhmann called his system his “second brain” or “communication partner” - this digital implementation aims to provide similar benefits through modern technology.

Features

• Create atomic notes with unique timestamp-based IDs
• Link notes bidirectionally to build a knowledge graph
• Tag notes for categorical organization
• Search notes by content, tags, or links
• Use markdown format for human readability and editing
• Integrate with Claude through MCP for AI-assisted knowledge management
• Dual storage architecture (see below)
• Synchronous operation model for simplified architecture

Examples

• Knowledge creation: A small Zettelkasten knowledge network about the Zettelkasten method itself

Note Types

The Zettelkasten MCP server supports different types of notes:

Link Types

The Zettelkasten MCP server uses a comprehensive semantic linking system that creates meaningful connections between notes. Each link type represents a specific relationship, allowing for a rich, multi-dimensional knowledge graph.