Model Context Protocol moderate risk

Zettelkasten

An MCP server for Zettelkasten knowledge management, enabling creation, linking, and exploration of atomic notes using Claude and other MCP-compatible clients.

Connections & Capabilities

Connects To

GitHubSQLite

Capabilities

readwrite

Quickstart

Config

{
  "mcpServers": {
    "zettelkasten": {
      "command": "/absolute/path/to/zettelkasten-mcp/.venv/bin/python",
      "args": [
        "-m",
        "zettelkasten_mcp.main"
      ],
      "env": {
        "ZETTELKASTEN_NOTES_DIR": "/absolute/path/to/zettelkasten-mcp/data/notes",
        "ZETTELKASTEN_DATABASE_PATH": "/absolute/path/to/zettelkasten-mcp/data/db/zettelkasten.db",
        "ZETTELKASTEN_LOG_LEVEL": "INFO"
      }
    }
  }
}

Exposed MCP Tools (14)

moderate

zk_create_note

Creates a new note with a title, content, and optional tags.

Adds new content to the Zettelkasten.

safe

zk_get_note

Retrieves a specific note by ID or title.

Read-only operation.

moderate

zk_update_note

Updates an existing note's content or metadata.

Modifies existing content.

high

zk_delete_note

Deletes a note.

Removes content from the Zettelkasten.

moderate

zk_create_link

Creates links between notes.

Adds relationships between notes.

moderate

zk_remove_link

Removes links between notes.

Removes relationships between notes.

safe

zk_search_notes

Searches for notes by content, tags, or links.

Read-only operation.

safe

zk_get_linked_notes

Finds notes linked to a specific note.

Read-only operation.

safe

zk_get_all_tags

Lists all tags in the system.

Read-only operation.

safe

zk_find_similar_notes

Finds notes similar to a given note.

Read-only operation.

safe

zk_find_central_notes

Finds notes with the most connections.

Read-only operation.

safe

zk_find_orphaned_notes

Finds notes with no connections.

Read-only operation.

safe

zk_list_notes_by_date

Lists notes by creation/update date.

Read-only operation.

moderate

zk_rebuild_index

Rebuilds the database index from Markdown files.

Potentially overwrites database content.

Safety Assessment

The Zettelkasten MCP server offers a balance between functionality and risk. It's relatively safe for read-only operations and knowledge exploration. However, write operations should be performed with caution, ensuring proper backups and understanding of the potential impact on the knowledge base.

Dual storage architecture with Markdown files as source of truth
SQLite database can be rebuilt from Markdown files
No external network access required for core functionality
Well-defined tool set with clear descriptions

Write operations possible via MCP tools
Potential for data loss if Markdown files are corrupted
Requires careful prompt engineering to avoid unintended actions
No built-in access control or authentication