# Paper Trail 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:** [Balaji Koneti](https://cerebralvalley.ai/u/BalajiKoneti)
- **GitHub:** https://github.com/KonetiBalaji/paper_trail_agent
- **Demo video:** https://paper-trail-agent.vercel.app/static/demo.html
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/742

Paper Trail Agent checks loan and bank statement PDFs for contradictions, so someone questioning a lender's numbers can bring exact evidence rather than a guess. It extracts principal, interest, dates and balances, recomputes totals with Python Decimal, and links findings to highlighted original source lines. Matching account, currency and period checks prevent invalid comparisons. A separate Extractor, Verifier and Critic validate the evidence; uncertain scans request review. Saved human decisions, exports, bounded tool traces and visible evals make the result auditable. Duplicate PDFs cannot be compared against themselves.

Try the protected synthetic demo: https://paper-trail-agent.vercel.app/ . It shows a $25 cross-statement interest discrepancy, a stated total $50 too high, a clean control, and an image-only review case. Public guests use deterministic checks with zero paid model calls; separate published live Muse Spark tests verify actual Meta tool use. The public repo includes fictional known-answer data, 407 passing core tests and CI. Real-world layout accuracy is not claimed; hosted OCR worker, email/portal ingestion and continuous monitoring remain pending. This is an evidence and review tool, with no automatic payments or dispute sending.

## More from Meta Global AI Developer Hackathon

- [ZAH DEV](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/739)
- [House of ENS](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/740)
- [Vault of Time](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/741)
- [RealityLab AI](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/743)
- [AGRIX](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/744)
- [WowDesignAI](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/745)

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Markdown version of https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/742. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt