# ReturnWitness

- **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:** [Sidra Miconi](https://cerebralvalley.ai/u/Sidra)
- **GitHub:** https://github.com/Sidra/returnwitness-hack
- **Demo video:** https://youtu.be/Jg2yhBP1V44
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1245

A returns lead at an online store that ships multi-item kits can't tell at the bench whether a returned box is complete. My seeded store, Brindlewood Camera Co., ships a $340 kit: body, zoom lens, charger. A box comes back, a scan says received, the full refund goes out; if the lens stayed behind, the store paid $340 for two thirds of a kit and cannot prove it.

ReturnWitness films the unboxing under a fixed overhead camera. SAM 3.1 segments and tracks every item, hand and sheet of paper; my app code counts an item only once it settles in the inspected tray, so a covering hand or a re-issued track ID can't double-count, then reconciles it against the packing slip and policy. Muse Spark 1.3 reads each serial label against the slip, open-weight readers audit the crops, and Muse Wonder 1.0 drafts the decision citing the policy clause. Any unobserved line, unread label or doubting reader makes the case HELD: never auto-denied, never auto-paid. A person reviews the evidence and releases the refund with a single-use, evidence-bound token, in Stripe test mode.

On my two filmed returns, the missing-lens kit was held correctly; the complete kit was a false hold, because two readers called the real compact film camera, a stand-in prop, a toy. A doubt can hold money, never release it, and a person decides. Live: https://returnwitness.vercel.app

Posts: X https://x.com/SidraMiconi/status/2117756371097837610 · AgentGlass on X https://x.com/AgentGlassInc/status/2117756839328968900 · Instagram https://www.instagram.com/reel/DfTFNcuyMDC/ · LinkedIn https://www.linkedin.com/feed/update/urn:li:activity:7523525233874657280/ · YouTube https://youtu.be/Jg2yhBP1V44

## More from Meta Global AI Developer Hackathon

- [MEGZ](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1242)
- [PhysicalMCP](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1243)
- [Atelier Busco](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1244)
- [Jonathan_Stokes](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1246)
- [ProofForge](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1247)
- [Team M.E.G.A](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1248)

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Markdown version of https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1245. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt