workwell
Built at Meta Global AI Developer Hackathon · Oct 26, 2026 · Remote

The Sentence Book shows how a personal AI agent can bring what it knows about your everyday life into an independent app and turn that context into something useful. Its first use case is language learning: your life becomes your textbook. Generic lessons rarely teach exactly what you want to say, while free conversation asks you to speak before you have practiced. With your permission, your own Muse prepares and delivers personal lessons on a schedule, without requiring a daily diary or a new prompt. The app guides you through Copy, Shadowing, Dictation, Reconstruction and Speaking, with contextual vocabulary help and writing feedback. Finished pages become a printable book. Built during the hackathon as a new implementation, this project includes the study interface, Muse connection and lesson inbox, five-stage practice flow, Meta Model API integration for vocabulary and writing feedback, and printable notebooks. A separate earlier prototype informed the concept and design; its application code was not reused. Try the sample without connecting Muse: https://sentence-book-muse.pages.dev Personal lesson delivery requires signing in and connecting your own Muse.