LaunchKit · 2026
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graphthulhu

Knowledge graph MCP server for Logseq and Obsidian. 37 tools for reading, writing, searching, and analyzing.

0
272 downloads
by @skridlevsky

Setup & Installation

openclaw skills install @skridlevsky/graphthulhu

Or with the ClawHub CLI, for registry-managed skill folders outside a full OpenClaw workspace:

npx clawhub install graphthulhu

What This Skill Does

MCP server that provides read and write access to Logseq and Obsidian knowledge graphs. Covers 37 tools across navigation, search, writing, analysis, decisions, journals, flashcards, and whiteboards.

Obsidian support requires no plugins and reads .md files directly, while Logseq support uses the built-in HTTP API for full bidirectional access.

When to use it

  • Search notes for a topic and find all connected pages
  • Append blocks to existing Obsidian pages from a chat interface
  • Log a decision with a deadline and check its status later
  • Review SRS flashcard due dates without opening Logseq
  • Detect orphaned notes and knowledge gaps across a vault

Example Workflow

Here's how your AI assistant might use this skill in practice.

INPUT

User asks: Find all my notes on distributed systems and show me how they connect

AGENT
  1. 1Runs full-text search across the vault for the topic
  2. 2Fetches page content and block trees for matching results
  3. 3Traverses the link graph to find connections between related pages
  4. 4Returns a summary of linked pages and flags any orphaned or unlinked notes
OUTPUT

A list of relevant pages with their connections and a note on topics not linked to the cluster

Requirements

Accounts, API keys, or tools you or your AI assistant may need to set up while using this skill.

graphthulhu binary installed on PATH (download from GitHub Releases or via go install)LOGSEQ_API_TOKEN environment variable (Logseq users only, generated in Logseq Settings > Features > HTTP APIs server)