LifeOS is an open-source personal AI harness created by security researcher Daniel Miessler, with more than 19,500 stars on GitHub. Rather than being another chatbot, LifeOS is a general-purpose operating layer that sits on top of an AI coding harness such as Claude Code and gives it persistent knowledge of who you are: your goals, people, preferences, and current projects. Its single organizing idea is moving you from your Current State to your Ideal State, in life and in work. The project ships frequent releases and was updated throughout 2026.
LifeOS installs as a self-contained system of skills, hooks, and context files. Its Cortex memory consolidates learnings, decisions, and work history across sessions, while components such as TELOS (a structured model of your goals and identity), the Algorithm (its core operating loop), and intelligent routing send each request — research, writing, security work, building — to the right workflow automatically. Because it is built on universal primitives rather than one vendor’s features, LifeOS is harness-agnostic, though Claude Code is its most-tested home. A large bundled skill library covers research, security, writing, and creative tasks.
LifeOS is free and open source under the MIT license — the project states it will remain free forever, with optional GitHub sponsorship. You supply your own AI harness subscription or API access.
LifeOS is for power users who already work through an AI harness daily and want a persistent digital assistant that accumulates context and compounds in usefulness over time.