Self-hosted wellness OS. A coaching team reads your labs, lifting, running, food and sleep as one picture, suggests the one thing worth doing today, and makes the small calls with a one-tap Undo. PWA + REST + MCP. No scores, no nudges.
Latest release v2.1.12 · 3 Nov 2026
3 files for Claude Code, Codex and OpenCode: cairn, cairn AGENTS.md, cairn CLAUDE.md — 13,889 tokens loaded in every session.
AGENTS.md A 4 tok CLAUDE.md A 13,885 tok .agents/skills/cairn/SKILL.md A 74 tok These files are zilet/cairn's own configuration — they tell Claude Code, Codex and OpenCode 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.