A cheap background model that watches your session over its shoulder and, when — and only when — it sees something worth saying, drops one short advisory into it: asynchronously, without blocking, interrupting, or being asked.
2 files for Codex, OpenCode and Claude Code: claude-code-second-brain AGENTS.md, claude-code-second-brain CLAUDE.md — 516 tokens loaded in every session.
AGENTS.md A 513 tok CLAUDE.md A 3 tok These files are shofer-dev/claude-code-second-brain's own configuration — they tell Codex, OpenCode and Claude Code how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.