second-brain (Claude plugin)

A personal, append-only second brain for Cowork and Claude Code. You dump raw material; the librarian folds it into a clean, lifecycle-tagged wiki/ and answers your questions always with sources, never inventing. Each person runs /setup-second-brain to generate their own private brain folder — no one's private notes live in this repo.

What's in the plugin

• setup-second-brain — interviews you and scaffolds a personal brain (folders + a tailored CLAUDE.md
  • conventions + portfolio index + sources config). The brain folder is created on your machine; it is never part of this repo.
• brain-capture — capture a conversation, fold unfiled raw/ notes, or promote staged _inbox/ items into the wiki. Writes (append-only raw/, additive wiki/).
• ask-brain — read-only: routes via the portfolio index, answers with cited pages, logs to outputs/.
• process-meeting — transcript → meeting page (weighted routing; ambiguous → _inbox/).
• pull-meet-notes — daily Gemini Meet ingest from Google Drive (config/autoFold-aware; staged).
• kb-health-check — read-only audit (incl. lifecycle & inbox hygiene).
• brain-consolidate — sleep-cycle consolidation: Light (ingest), REM (weekly associative pass, cited, propose-only), Deep (monthly compaction + curated promotion of durable facts into Claude’s persistent memory, confirm-gated). Memory promotion is a hot cache of how you think, never a wiki mirror.

The skills discover the brain by the connected folder whose CLAUDE.md contains "Second Brain Librarian" and has a wiki/ — nothing is hardcoded, so the same plugin works for everyone.

Install

Organization (recommended). An admin adds this repo as a marketplace and sets the second-brain plugin to auto-install; team members get it automatically (Cowork: + → Plugins). See Organization settings → Plugins.

Manual (Claude Code).

claude plugin marketplace add igorgsduarte/my-second-brain
claude plugin install second-brain@second-brain-marketplace

First run

1. In Cowork, connect an empty folder for your brain.
2. Run /setup-second-brain and answer a few questions.
3. Keep the brain folder connected and start dumping: "save this to my brain", "ask my brain …".

Privacy

This repository contains only the plugin (skills + manifests). Personal brains — raw/, wiki/, _inbox/, _state/, outputs/ — are generated locally per user and are git-ignored here.