# Cubiczan

- **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:** [Shyam Desigan](https://cerebralvalley.ai/u/Cubiczan1)
- **GitHub:** https://github.com/Cubiczan/aegis-muse-spark
- **Demo video:** https://youtu.be/Lhs8hDU0oOg
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/127

A Muse Spark (muse-spark-1.3) accounts-payable agent reads vendor emails and scanned invoices and proposes payments. Aegis sits between the agent and the money: vendor allowlist and sender-domain match, changed-bank-detail (BEC) detection, duplicate-invoice detection, Tripwire-style approval tiers ($5k auto / $25k controller / above blocked for CFO), hidden-text and prompt-injection screening of emails and invoice images (Muse Spark vision), and fail-closed parsing. A Proof-of-Assay style month-end check recomputes a reconciliation and blocks a "CLEAN" verdict the numbers contradict. A one-page CFO spend report is generated from the hash-chained audit log. The original Aegis layers (rules, Llama-Guard-style safety screen, tighten-only judge, OpenAI-compatible proxy) remain.

Demo results (recorded live run on Meta Model API, Oct 30 2026; SYNTHETIC sample data): 8 invoices → 1 approved ($4,860), 1 held for controller ($8,200), 6 blocked ($46,920.10): duplicate, bank change, over-limit, unknown vendor, hidden-text email, and a scanned invoice with hidden instructions that the agent itself recommended paying. Month-end batch claimed CLEAN; Aegis found a $3,180 gap / double-paid invoice and blocked it (Muse Spark's own verdict in that run was EXCEPTIONS). Tests: 33 unit + 23/23 red-team scenarios.

Honesty notes: demo video voiceover is synthetic (TTS); all vendors, invoices and bank accounts are synthetic; no money moves; the Llama-Guard-style screen is skipped for invoice emails (privacy false positives); the public demo shows the recorded run, live runs are local only (abuse/credit limits).

## More from Meta Global AI Developer Hackathon

- [Remelt Games](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/124)
- [Geppetto](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/125)
- [aLive Bangladesh — meUus](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/126)
- [AI Infrastructure SimCity](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/128)
- [Sabi](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/129)
- [FixLens](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/130)

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Markdown version of https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/127. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt