# Deposit Hawk

- **Event:** [Claude Build Day](https://cerebralvalley.ai/e/claude-startups-build-day)
- **When:** Sat, Jun 13 at 9:00 AM – 10:00 PM (PDT)
- **Where:** San Francisco, CA
- **Team:** [Pablo Moreno](https://cerebralvalley.ai/u/jpmoreno)
- **GitHub:** https://github.com/jpablomm/deposit-hawk
- **Website:** https://deposit-hawk.vercel.app/
- **Demo video:** https://youtu.be/cqn1jkZ0omQ
- **Gallery:** https://cerebralvalley.ai/e/claude-startups-build-day/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/claude-startups-build-day/hackathon/gallery/71

Deposit Hawk helps US renters recover security deposits their landlords illegally withheld — something nearly every renter faces and almost none fight, because they'd never call a lawyer. It's a tool that acts, not a chatbot that answers. You photograph the landlord's deduction letter; Opus 4.8's vision extracts each claimed deduction, checks it against California Civil Code §1950.5 (every citation verbatim from the live statute), and computes the exact amount owed in deterministic code — e.g. $2,000 wrongfully withheld plus up to a 2× bad-faith penalty, up to $6,000. Then it does the things a chatbot can't: generates and mails a real USPS certified demand letter with tracking, prefills the official SC-100  small-claims form, and routes low-confidence items to human review. Spanish-first, mobile-first, free. The output is a filed-ready legal action with cited evidence - not advice.

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Markdown version of https://cerebralvalley.ai/e/claude-startups-build-day/hackathon/gallery/71. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt