# Aeternus

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [Arun Jagadish](https://cerebralvalley.ai/u/arunjagadish)
- **GitHub:** https://github.com/arunjagadishsd/kaptr-meta
- **Demo video:** https://youtu.be/rdm59Ws18dI
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2491

Kaptr ("Answer with your camera.") is a live photo game on Google Play and the App Store: a daily photo riddle, Tic Tac Toe, Bingo, Hunts and Binder collections, all answered by pointing your camera at the real thing. The problem: an AI judge that says "no" with no reason feels arbitrary, and one that a photo of a monitor can fool is a cheat code. For this hackathon I moved Kaptr's judging onto Meta's models and made the judge check itself. Muse Spark judges the photo and names what it saw; SAM 3.1 must find that exact object, outlines it on the player's photo, and catches answers that are only a picture on a screen. On top of that I built a weekly mystery written by a Muse Wonder agent (every answer you shoot becomes evidence on a board until the case is closed), Real or Forged (Muse Image forges a photo, you spot the fake), Riddle Forge (your photo becomes a self-tested riddle for a friend), Action Cases judged from 3-second video, "Why not?" explanations after a miss, and Play it blind, the daily riddle for blind and low-vision players. The Meta features run on Kaptr's staging build; shipping them needs an age gate, a privacy policy update and real-world testing.

## More from Meta Global AI Developer Hackathon

- [Sravan Kumar](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2488)
- [OpenAgents](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2489)
- [Worklyn](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2490)
- [elessar (solo)](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2492)
- [Marouane Alahyane](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2493)
- [PacketScope](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2494)

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Markdown version of https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2491. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt