AI Creator's Second Brain 🧠

An Obsidian vault template + "compiled brain" builder for AI creators working with Claude Code (or any AI agent).

Your prompts, your past works, your taste — scattered across thousands of files — become one queryable knowledge system: browsable by you in Obsidian, and loadable by your AI agent in a single file read.

🇯🇵 日本語の説明は下にあります。

The idea

Creative knowledge has different shelf lives. This vault splits it into three layers:

Layer	Contains	Shelf life
`10_principles`	How you think — aesthetics, framing rules, creative doctrine	Forever
`20_works`	One note per work: the prompt, the result, what worked (○), what failed (×), what surprised you (☆)	Forever (dated specimens)
`30_recipes`	Tool-specific know-how (model quirks, camera grammar, prompt formats)	Expires — tracked with `status: current/superseded`

Then compile_brain.py compiles the whole vault into one small digest file (~15 KB). Your AI agent reads that single file first — the whole brain in one context load — and only deep-dives into individual notes when needed. The digest ends with a "what this brain does NOT know yet" section, so the agent knows when to go read the source.

Quick start

Copy vault-template/ into your Obsidian vault (or use it as a new vault)
Fill a few notes: one principle, one work, one recipe (templates included)

Build the digest:

python3 compile_brain.py --vault /path/to/your/vault

Tell your AI agent (e.g. in CLAUDE.md): "Before any creative task, read 00_MOC/compiled-brain.md in one go, then deep-dive individual notes as needed. Rebuild with compile_brain.py after updating the vault."

The verification memo (○×△☆)

Binary "worked / failed" doesn't match creative reality. Each work note records per-element outcomes:

○ did what I intended
× didn't work
△ partially worked
☆ unplanned but good → adopted (the most valuable symbol: knowledge nobody designed)

Disaster recovery

A second brain you can lose to a repair shop isn't infrastructure — it's a pet. docs/disaster-recovery.md covers backing up the brain itself (agent memory, conversation logs, skills, vault) with a restore README written for the AI, not for you — field-tested the night before a MacBook repair.

Born from practice

This system is extracted from the real workflow of notfukudaSTUDIO — a former fashion-magazine editor-in-chief turned AI creator (work screened at Expo 2025 Osaka) — who manages 80+ AI works, 50+ distilled recipes and 30 creative principles with it, in production, daily.

🇯🇵 AIクリエイターのための第二の脳

Obsidianの3層Vault(原理/事例/レシピ)テンプレートと、Vault全体を1ファイルに固める「圧縮脳」コンパイラのセットです。散らばったプロンプト・過去作・美意識を、人間はObsidianで、AIエージェントは1回のファイル読み込みで参照できる知識システムにします。

知識を賞味期限で3層に分ける(不変の原理 / 日付つきの事例 / 期限つきのレシピ)
検証メモは○×△☆の4記号(「狙ってないのに良かった→採用」の☆が最重要)
compile_brain.py がVault全体を約15KBのダイジェストに圧縮 — エージェントが冒頭1Readで全脳ロード
ダイジェスト末尾に「この脳がまだ知らないこと」を自動生成(エージェントの知ったかぶり防止)
災害復旧ガイド(docs/disaster-recovery.md)— 脳ごとバックアップする方法。復元手順書を「AI向けプロンプト」として書くのがキモ。MacBook修理前夜に実戦検証済み

License

MIT

ai-creators-second-brain