# HACK IT

- **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:** [Yusuke Kashiwabara](https://cerebralvalley.ai/u/ykassy)
- **GitHub:** https://github.com/ykassy/muse-ar-creator
- **Demo video:** https://youtu.be/HcKuMI8WqM0
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4629

MOSHI MOSHI — say hello to your characters. A new form of entertainment, built on Muse.

Make one in your browser and talk to it, no Muse: https://hackathon-ar-creator.vercel.app/try (or turn our 40: /gallery). In Muse, add /mcp there as a connector and say "Moshi Moshi" or "Join DRIZZLY-7913"; a first reply can be slow.

We are HACK IT, a Japanese studio building AR for brands and festivals on our own app-less WebAR platform, HACKAR:S. Japan's 2015 mascot grand prix had 1,727 entries, yet one AR character takes a designer, an editor and device testing. MOSHI MOSHI connects Muse to that platform by MCP, so a mascot's owner, starting with small shops and festivals, can build, publish and open a stamp rally in one chat. Upload your mascot at /try: a clean three-view sheet keeps your own front and back. HACKAR:S has paid plans (¥1,980–9,800 a month; a character costs about $0.07), and 79 outside accounts have published 130 projects by hand (platform numbers, not this connector's); this is a new way in. Our vision, not built yet: a place where Japanese IP gathers, with rights confirmed and characters reviewed, and people who live with it.

Say the passphrase, then a theme or sketch photo (redrawn, not traced). Muse Spark designs the name, personality and magic while Muse Image draws. Spark grades the cut-out with vision and, when time allows, writes a fix and redraws once (in one run 4/10 "no open yellow umbrella" became 10/10). If it still fails, or Spark finds someone else's IP, publish_ar refuses until the user agrees. Our server extrudes a rigged 3D plate (not a full 3D model) and publishes a HACKAR:S project. Open the link: it stands on your floor, no app.

Use your hands, as with AR glasses: pinch to carry it, show your palm for its spell. Press talk: Voice Transcribe hears you, Spark replies and picks an action.

Spark writes a quiz, riddles and a stamp rally with a join code. Visitors say the code in Muse; play_rally checks hashed answers and signs stamps.

In our own runs 40 of 41 reached a published link; the repo lists them all. 20 direct calls averaged 1.4 minutes from theme to link; one unbroken Muse chat took 7.6 minutes from hello to a first stamp. Real use found what scripts did not: calls dropped at 50 seconds (now kept alive), Muse could not copy a long session card (now a 27-character pointer), and SAM left out held umbrellas. Nobody outside our team has used it yet.

Glasses next: a Ray-Ban Display web app runs in Meta's simulator, not on hardware; its daily-life screens are scripted. In the video, glasses are labeled composites, the goldfish is our emulator, and the sketch scene is an older build. AR and Muse footage is real (waits sped up).

Built during the hackathon (Oct 26 – Nov 4): the connector, model pipeline, GLB builder, HACKAR:S API extensions, hand, talk and pet features, the play pages and the Ray-Ban prototype.

Pre-existing: the HACKAR:S editor, SLAM player core and accounts, and the Ultra Elements effects (MIT).

## More from Meta Global AI Developer Hackathon

- [grayFog](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4626)
- [Aura - Companion App](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4627)
- [WTM](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4628)
- [Codeler](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4630)
- [SabiqLab](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4631)
- [Sada](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/4632)

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