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obsidian-second-brain

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Operate any Obsidian vault as a living, self-rewriting second brain (an evolution of Karpathy's LLM Wiki pattern: sources rewrite existing pages, contradictions reconcile automatically, scheduled agents maintain the vault while you sleep). Use this skill whenever the user asks Claude to read, write, update, search, or manage their Obsidian vault - including saving notes from conversation, creating daily entries, updating kanban boards, logging dev work, managing people notes, capturing decisions, tracking deals, or maintaining any vault structure. Also triggers when the user wants to bootstrap a new vault from scratch, run a vault health check, or drop a _CLAUDE.md into their vault so all Claude surfaces share the same operating rules. Also runs Crew (/crew): one shared logbook so Claude Code, Codex, Cursor, and Grok Bot know what each other did, in any plain folder or the vault. Includes a research toolkit (7 commands: /x-read, /x-pulse, /research, /research-deep, /notebooklm, /youtube, /podcast) for AI-powered research via Grok, Perplexity, NotebookLM, YouTube, and podcast feeds - findings save to the vault automatically following the AI-first vault rule. Use proactively whenever the conversation produces information worth preserving (decisions, people met, projects started, tasks completed, lessons learned, research findings).

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Network or broad shell
Last checked
Nov 9, 2026

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5,243
Repository last updated
Nov 8, 2026
License
MIT

Observed agent integration: claude-code

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# Obsidian Second Brain

> Claude operates your Obsidian vault as a self-rewriting knowledge base. An evolution of [Karpathy's LLM Wiki pattern](https://gist.github.com/karpathy/442a6bf555914893e9891c11519de94f): sources rewrite existing pages instead of just appending, contradictions reconcile automatically, and scheduled agents maintain the vault while you sleep.
> Everything worth remembering gets saved. Every update propagates everywhere it belongs.

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## Quick Start

### 0. Choose vault access method (in order of preference)

Try these methods in order. Use the first one available:

**Method 0 - SessionStart hook (if configured):**
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