It is an Obsidian vault with Claude Code agents, skills, hooks and rules that keep it organized. You write and decide. Claude Code creates the daily note, runs the weekly review, triages the inbox, keeps links healthy and tells you what is overdue.
The global /brain command captures a thought from any Claude Code session, in any folder, into the vault inbox. With /brain ? and a question, it searches the vault and answers with links to the notes.
It fits people who already use Claude Code and want goals, projects and notes in one place, under git. You need Claude Code, Obsidian, git, python3 and jq, on macOS or Linux.