obsidian-second-brain

The saved excerpt is a snapshot from review. The external source remains the complete and most current version.

---
name: obsidian-second-brain
description: >-
  Routing front door for obsidian-second-brain — a self-rewriting Obsidian vault that evolves
  Karpathy's LLM-Wiki pattern. Every source REWRITES existing pages instead of appending: people
  updated, claims revised, contradictions reconciled, patterns synthesized automatically. 45
  commands across 4 layers, background + 4 scheduled agents, 4 role presets, AI-first write
  validator. Cross-CLI: Claude Code, Codex CLI, Gemini CLI, OpenCode.
allowed-tools: Read Write Edit Bash Grep Glob WebFetch
aliases: /create-command /idea-discovery /notebooklm /obsidian-adr /obsidian-agenda /obsidian-architect /obsidian-board /obsidian-calendar /obsidian-capture /obsidian-catchup /obsidian-challenge /obsidian-connect /obsidian-daily /obsidian-decide /obsidian-emerge /obsidian-export /obsidian-find /obsidian-graduate /obsidian-health /obsidian-init /obsidian-ingest /obsidian-learn /obsidian-log /obsidian-meeting /obsidian-panel /obsidian-person /obsidian-project /obsidian-projects /obsidian-recap /obsidian-reconcile /obsidian-recurring /obsidian-review /obsidian-save /obsidian-schedule /obsidian-synthesize /obsidian-task /obsidian-visualize /obsidian-world /podcast /research /research-deep /vault-deep-synthesis /x-pulse /x-read /youtube
compatibility: >
  Cross-CLI — one codebase builds dispatchers for Claude Code (CLAUDE.md), Codex
  CLI / OpenCode (AGENTS.md), and Gemini CLI (GEMINI.md). The vault behavior is
  identical across all four; only the install path differs. The 35 core commands
  are pure instruction files and run on any model the host CLI points at (incl.
  open models like Hermes via OpenRouter). The 4 Google Calendar commands are
  Claude Code only (Codex/Gemini/OpenCode builds ship 40). The optional research
  toolkit needs Python 3.10+ (`uv sync`) and API keys (xAI / Perplexity / Gemini /
  YouTube / OpenAI), but `/research` + `/research-deep` fall back to free key-less
  sources when unkeyed. Plugin-installable via `npx skills add`.
metadata:
  tags: obsidian-second-brain, obsidian, second-brain, llm-wiki, knowledge-vault, note-taking, self-rewriting, contradiction-reconciliation, synthesis, research-toolkit, cross-cli, claude-code, codex, gemini, opencode
  platforms: Claude, Codex, Gemini, OpenCode, All
  keyword: obsidian-second-brain
  version: "1.0.0"
  upstream: https://github.com/akillness/obsidian-second-brain
  origin: https://github.com/eugeniughelbur/obsidian-second-brain
  source: akillness/jeo-skills
  license: MIT
---

# obsidian-second-brain

A routing-first front door for [**obsidian-second-brain**](https://github.com/akillness/obsidian-second-brain)
— an evolution of [Karpathy's LLM-Wiki pattern](https://gist.github.com/karpathy/442a6bf555914893e9891c11519de94f)
into **a vault that rewrites itself**. Where the LLM-Wiki appends new pages, this
skill REWRITES existing ones: people get updated, claims revised, stale facts
replaced, contradictions reconciled automatically, and cross-source patterns
synthesized on their own — while you sleep.

> **Keyword**: `obsidian second brain` · `self-rewriting vault` · `obsidian-save` · `obsidian-ingest`
>
> One codebase, four CLIs (Claude Code · Codex CLI · Gemini CLI · OpenCode), same brain.

## When to use this skill

- The user wants an Obsidian vault that **maintains itself** instead of a static filing cabinet.
- The user wants to **capture work into the vault**: save a conversation, ingest a URL / PDF / audio / screenshot, log a session, create daily notes, track tasks/people/decisions.
- The user wants the vault to **reconcile contradictions** and **synthesize cross-source patterns** automatically.
- The user wants **thinking tools** that push back: challenge a decision against their own history, convene a perspective panel, surface unnamed patterns, bridge unrelated domains.
- The user wants **research pulled into the vault**: deep-read an X post, scan X trends, web research with citations, vault-first deep research