# Violet Sky Security

- **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:** [Rudolf Coetzee](https://cerebralvalley.ai/u/RudiZee)
- **GitHub:** https://github.com/rudizee007/violet-sky-security-meta-hackathon
- **Demo video:** https://youtu.be/jWyp47A9gXg
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2721

Violet Sky Security SEZC helps ensure an AI-assisted purchase stays within the user’s approved terms and produces a verifiable record of the outcome.

Built with Muse Code and powered by Meta Model API, the prototype lets a purchasing assistant propose a product or service within a budget. The server resolves trusted catalog prices and merchant details. An authorization gate built on public SPT-TXN components binds permission to the specific merchant, item, quantity, amount, currency and order, then rechecks authority before Stripe sandbox payment capture.

An interactive attacker simulation demonstrates what happens when someone changes the amount or merchant after approval: the real gate rejects the altered transaction before mock payment execution. An unchanged request is permitted once, and replay is blocked.

After payment, a completion verifier checks recorded authority, purchase, provider payment evidence and synthetic delivery evidence. It issues a signed completion receipt that can be exported and checked independently using a trusted public key. Altering the signed receipt causes verification to fail.

The hackathon contribution connects Meta inference, transaction authorization, test payment processing and outcome verification into one demonstrable workflow. It reuses the public SPT-TXN proof of concept with attribution and adds the purchasing interface, integration adapter, attacker demonstration and completion verification.

This is a prototype: payments use Stripe’s sandbox, delivery is synthetic, and the demo manages its own holder keys.

## More from Meta Global AI Developer Hackathon

- [Layer_Zero](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2718)
- [Barghest](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2719)
- [ActCheck](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2720)
- [Quack](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2722)
- [Aurora](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2723)
- [Prasanna Sharma](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2724)

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Markdown version of https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2721. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt