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

Commonplace is a shared 3D office where meetings update your team's records — and the office remembers, with receipts. Every team knows the problem: decisions happen in meetings, but the follow-through lives nowhere. Tasks sit in a tracker, customer promises in a CRM, and the reasoning in notes nobody reopens. Answering a simple question like "What's going on with Acme?" means pinging someone, scheduling a call, or guessing. Promises made to customers rarely make it into the plan. Commonplace fixes this by making the meeting the write path. You and a teammate join the same live isometric office from two browsers, check in at your desks, book the Acme room, and hold the meeting there. When it ends, AI reads the transcript and proposes four concrete changes — move the go-live from 15 Nov to 22 Nov, update the commitment to Acme, reassign the blocked task, create a follow-up task. Nothing is written until a person approves or rejects each one. Every approval leaves a live receipt — what changed, from which meeting, approved by whom — visible instantly on the other person's screen and on the room's wall display, with no refresh. Afterwards, anyone can ask the office "What's the status of the Acme integration?" or "What's my day?" and get an answer that cites the exact records it used — or an honest "I don't have a record of that" when nothing supports it. No fabricated answers, no autonomous writes.