obsidian-second-brain

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 — an evolution of Karpathy's LLM-Wiki pattern 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, source-grounded NotebookLM synthesis, YouTube/podcast transcripts.
• The user wants to install the second-brain skill on Claude Code, Codex CLI, Gemini CLI, or OpenCode (incl. open models like Hermes).
• The user wants to scan a codebase and write maintained architecture notes into the vault (/obsidian-architect).

Route out when the real job is narrower:

• obsidian — Obsidian plugin development, CLI automation, URI handoff, JSON Canvas, Bases content patterns.
• llm-wiki — the underlying raw/wiki markdown layer, source summaries, query filing, lint passes.
• okf — exporting the vault as a portable, vendor-neutral Open Knowledge Format bundle.
• notebooklm — standalone source-grounded NotebookLM queries outside a vault workflow.