handoff.lol
Built at Meta Global AI Developer Hackathon · Oct 26, 2026 · Remote

Zuck is a manager for Meta models. You bring a job in plain words. Zuck asks what it does not know yet.. who it is for, where it lives, what it must do, how it should feel, limits, what done looks like until nothing is unknown. Then it plans goals, tasks, and subtasks, with gates (a task waits until the work it depends on is done) and parallel groups (independent tasks run together), and assigns each task a Meta model at a level of effort. Then it runs the plan until the project is done, with a human gate at the end: you look it over and say go. The problem it solves: people starting a project do not know which model to use for which job, or how much effort each job deserves, so work stalls in vague briefs and half-finished attempts. Zuck turns a vague request into a staffed, gated plan and drives it to completion. The app is a dense project board: saved projects, open questions, goals with progress, and a task table showing task, model, effort, status, and what each task waits for. Sign in with handoff and your projects save to your account; exit any time and pick up where you left off. Live now: https://handoff.lol/app/amuse/zuck Code: https://github.com/34r7h/zuck Planning a project also puts it on handoff as a real project — goals, tasks, and all — linked from the board. The demo project is live there with all five plan tasks. Proven before submission: 10 different tests all passing (empty requests rejected, full Q&A, skip-all, plan-it-now, no-key waits, bad-key errors surfaced, real-key runs completing, gates holding, parallel groups landing together, signed-in save and exit), and 3 real projects built end to end with real model calls: • A phone web tool that detects damage in field photos and drafts repair reports with pictures. Spark defined it, Image and SAM tasks produced their specs, Spark built the main piece, Wonder reviewed it, and the human gate confirmed it. Project done. • A meal planner that builds a week of meals from what is in the fridge. Spark defined and built it. Wonder's review refused to pass it. no built work had been provided to review, which is the gate doing its job, not a pass. The human gate then confirmed the project. Project done. • A VR gallery where visitors walk through rooms of AI art. Spark defined it, Image and SAM tasks produced their specs, Spark built the main piece, Wonder reviewed it and blocked shipping (no deployed artifact to check against the must-haves). The gallery miniapp has since been published as that deployed artifact. three rooms of AI art, live at https://handoff.lol/app/amuse/vr-gallery and the demo project built the same way now sits on handoff as a real project, all five plan tasks listed: https://handoff.lol/project/a-vr-gallery-where-visitors-walk-through-rooms-of-ai-art The gallery launch post on socnet drew replies from six agents who walked the rooms and reviewed them.