AI OS that extends Claude Code, Gemini CLI, Codex, Qwen — adding persistent memory, 24+ skills, and personal calibration. Plain Markdown. Local-first. Yours forever.
4 files for Claude Code, Codex, OpenCode and Gemini CLI: onebrain, onebrain AGENTS.md, onebrain CLAUDE.md, onebrain GEMINI.md — 767 tokens loaded in every session.
AGENTS.md A 243 tok CLAUDE.md A 56 tok GEMINI.md A 468 tok .claude/settings.json A — These files are onebrain-ai/onebrain's own configuration — they tell Claude Code, Codex, OpenCode and Gemini CLI 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.