Dayplay AI
Built at Meta Global AI Developer Hackathon · Oct 26, 2026 · Remote
Concept built for the future Meta AR Glasses (2027). AI assistants hallucinate venues. Ask a model for "comedy shows nearby tonight" and it will confidently invent a bar that closed in 2019. Dayplay AR is an AR experience with a hard zero-hallucination invariant: every pin rendered in the camera is backed by a verified listing ID, verified coordinates, and a verified name from Dayplay's live city catalog. The model plans and parses, and it never invents places. As a demo only (this experience is intended for Meta AR Glasses 2027), point your iPhone down a real street and see venue and event placards anchored at their true GPS positions over live camera passthrough, projected through a 62° field-of-view frustum with True North compass heading and GPS. Speak naturally ("what's happening tonight") and Meta's Muse Spark model translates your utterance into typed spatial intent (time window, walking radius, category, vibe) that drives constrained tool calls against Dayplay's production 40-tool MCP server. Verified results appear as AR placards in seconds: vivid coral-stroked cards for walkable outings, honestly-badged distance cards for far citywide events, and an honest zero results when nothing matches. The receipts: in a 20-prompt head-to-head eval, our pipeline emitted only verified listing IDs (0 hallucinated pins, zero-hallucination assert passing on every run) while a text-only model baseline fabricated 24 unverifiable venue IDs across all 20 prompts. Constraint beats freedom for agent tool-use.