S
PERSONAL OPERATING SYSTEM · PRIVATE BY DESIGN
Lifebook
A private system that turns a life vision into daily action, with an AI companion that proposes, never imposes.
IN SHORT
Lifebook turns a once-a-year life-vision document into a living system of goals, actions and journal entries across twelve life areas. Its AI companion, Lify, plans the day and flags drifting goals, but every change waits for the user’s approval.
- from first release to v0.3.1
- 26 days
- lines of TypeScript
- 16.3k
- MCP tools for external agents
- 27
- of personal content on user-controlled servers
- 100%
CASE STUDY
Problem. Approach. Outcome.
- The problem
- A life plan that lives in a slide deck stops living. Editing is slow, nothing links the vision to this week, and the content is too personal for a SaaS notes app.
- The approach
- Edit like a document, see like a board, act like a plan. One database per user, bring-your-own AI model, and open access for external agents over MCP.
- The outcome
- Six releases in 26 days, in daily use by an invited circle. Next: a coach mode that shares progress without breaking per-user isolation.
Source. Lifebook project overview v0.3.1, 2026.