# iussum-agent

- **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:** [Serghei Ochinca](https://cerebralvalley.ai/u/ochinimus)
- **GitHub:** https://github.com/seekdaseek/iussum-agent
- **Demo video:** https://www.youtube.com/watch?v=9CExAnb9XKE
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/100

iussum-agent lets you tell an AI agent out loud what it may spend, and gets your money back by rule when a seller delivers the wrong thing. Meta's open-weight Muse Spark Open turns the spoken request into limits, code validates them against fixed ceilings and reads them back, and nothing is granted until you confirm. The grant is one Solana transaction. A Muse Spark Open agent then shops three x402 photo shops with native tool calls and buys inside those limits. Every delivered photo is checked: Muse Spark Open finds the offered item, Meta's SAM 2.1 cuts its mask, and Muse Spark Open judges the photo against the offer. An error, low confidence or a disagreement is reported as could not be checked, never as a pass. A wrong delivery produces an evidence record signed by the shop that anyone can recompute, and the arbiter runs the same open-weight check again itself before it refunds once on chain.

Live on Solana devnet with test money at https://meta.ochinimus.app: 13 runs with the check on, 37 photos bought, 36 wrong deliveries caught and refunded, 1 honest delivery paid, 0 false accusations.

Built during the hackathon: the voice-to-limits compiler, the shopping agent, the delivery check, the evidence record, the arbiter re-check and the live page. The grant and refund plumbing comes from my earlier open-source iussum, pinned as a submodule and labelled in the README.

## More from Meta Global AI Developer Hackathon

- [PlainMed](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/97)
- [ClearDesk AI](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/98)
- [Marc Donovici](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/99)
- [BossoVoice](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/101)
- [Zero White Dreams](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/102)
- [Anomer](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/103)

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Markdown version of https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/100. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt