Turn Claude into a second brain that organizes — and improves — itself. This is a pre-built, Claude-ready vault plus the operating manual that teaches Claude exactly how to read, file, and grow your notes. The new v3 adds an agent engine (a master playbook, reusable workflows, and project skeletons) and a self-healing health check that audits your vault and writes a prioritized fix list — so your second brain gets cleaner on its own. Setup takes about 10 minutes with no coding (Obsidian optional), and it comes with a child-simple visual guide. Power users also get an Advanced tier: a free local AI model, the Claude Code CLI with ready-made commands, and automatic scheduled jobs.