# Team Senders

- **Event:** [Agents in Context Toronto: a MongoDB Hackathon](https://cerebralvalley.ai/e/mongodb-toronto-hackathon)
- **When:** Sat, Nov 14 at 9:00 AM – 9:00 PM (EST)
- **Where:** Toronto, Canada
- **Team:** [Muhammad Taha Cheema](https://cerebralvalley.ai/u/cokepolar), [Michael Lapshin](https://cerebralvalley.ai/u/mlapshin), [Tiffany Ngai](https://cerebralvalley.ai/u/tiff), [Rhea Norton](https://cerebralvalley.ai/u/llemonduck)
- **GitHub:** https://github.com/tahachm/mongodb-hack-2026.git
- **Demo video:** https://youtu.be/qQ57di9a-z4
- **Gallery:** https://cerebralvalley.ai/e/mongodb-toronto-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/mongodb-toronto-hackathon/hackathon/gallery/69

Our project is a shopping agent that acts on a buyer's behalf with a verifiable audit trail. Before recommending anything, it searches the buyer's past purchases and rejections via MongoDB Atlas Vector Search, then writes each conclusion to an append-only, hash-chained audit log. Each recommendation is a plan that cites a conclusion by event ID; the server rejects plans citing a nonexistent conclusion. A reviewer can trace any product back through its plan, conclusion, and supporting purchase records.

The agent operates across real systems: it queries merchant services, creates checkout sessions, and pays via a provider that issues single-use tokens scoped to one merchant, session, amount, and expiry. Every completed purchase saves the full conversation transcript, including all tool calls and results, to MongoDB.

## More from Agents in Context Toronto: a MongoDB Hackathon

- [MemoryBank](https://cerebralvalley.ai/e/mongodb-toronto-hackathon/hackathon/gallery/66)
- [StockFighter](https://cerebralvalley.ai/e/mongodb-toronto-hackathon/hackathon/gallery/67)
- [Second-Voice](https://cerebralvalley.ai/e/mongodb-toronto-hackathon/hackathon/gallery/68)
- [GridLock](https://cerebralvalley.ai/e/mongodb-toronto-hackathon/hackathon/gallery/70)
- [Murder Mystery](https://cerebralvalley.ai/e/mongodb-toronto-hackathon/hackathon/gallery/71)
- [Swarmtect](https://cerebralvalley.ai/e/mongodb-toronto-hackathon/hackathon/gallery/72)

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Markdown version of https://cerebralvalley.ai/e/mongodb-toronto-hackathon/hackathon/gallery/69. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt