# Agazayt

- **Event:** [The Harness Engineering & Model Wrangling #SFTechWeek Hackathon](https://cerebralvalley.ai/e/mongodb-sftw-hackathon)
- **When:** Sun, Oct 11 at 9:00 AM – 10:00 PM (PDT)
- **Where:** San Francisco, CA
- **Team:** [Warren Chan](https://cerebralvalley.ai/u/warrenwanders)
- **GitHub:** https://github.com/warren544/ledger
- **Demo video:** https://drive.google.com/file/d/1RuRiS0g443A0XTqyaArKD3lVOg4AWtEn/view?usp=drive_link
- **Gallery:** https://cerebralvalley.ai/e/mongodb-sftw-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/mongodb-sftw-hackathon/hackathon/gallery/87

Cash-heavy businesses (I'm involved with one: Thillens) reconcile deposits, invoices, and billing lines by hand every day, and the same fixes repeat for years while the knowledge dies in spreadsheets - teams want AI to automate it, but no CFO will let an agent rewrite financial controls unchecked. Ledger turns repeated human corrections into governed automation: variance cases and operator corrections live in MongoDB Atlas, an AI agent reads that history and proposes a deterministic rule in a strict closed JSON DSL, a demo operator evaluates it against ground truth for precision and recall, and only a separate human approver presenting the hashed evaluation report can activate it. The agent proposes, the operator evaluates, the human approves - capability gates enforce the separation and every transition is an auditable event, so operations teams get agent leverage without handing over the keys.

## More from The Harness Engineering & Model Wrangling #SFTechWeek Hackathon

- [tough](https://cerebralvalley.ai/e/mongodb-sftw-hackathon/hackathon/gallery/84)
- [Airlock](https://cerebralvalley.ai/e/mongodb-sftw-hackathon/hackathon/gallery/85)
- [Preflight](https://cerebralvalley.ai/e/mongodb-sftw-hackathon/hackathon/gallery/86)
- [Harness Darwinism](https://cerebralvalley.ai/e/mongodb-sftw-hackathon/hackathon/gallery/88)
- [Raindrop Returns Lab](https://cerebralvalley.ai/e/mongodb-sftw-hackathon/hackathon/gallery/89)
- [qnx](https://cerebralvalley.ai/e/mongodb-sftw-hackathon/hackathon/gallery/90)

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Markdown version of https://cerebralvalley.ai/e/mongodb-sftw-hackathon/hackathon/gallery/87. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt