# One Door Fully Stacked

- **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:** [Siv Sambasivam](https://cerebralvalley.ai/u/sivs), [Aza Ali](https://cerebralvalley.ai/u/aza_ali), [Teresa Chen](https://cerebralvalley.ai/u/Teresachen)
- **GitHub:** https://github.com/aza-ali/onedoor-advocate
- **Website:** https://onedoor--onedoor-advocate.us-central1.hosted.app/
- **Demo video:** https://us02web.zoom.us/rec/share/UqvM9lY54XSnzLiDuCExj-qxCbfF9nflDdPPc1TpLKR1Cie2DDHlEMvoVV2uIvCG.LJfWaysw53PVpcr9?from=hub
- **Gallery:** https://cerebralvalley.ai/e/claude-startups-build-day/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/claude-startups-build-day/hackathon/gallery/157

One Door is an AI benefits advocate for Californians who qualify for help but get stopped by confusing rules, language barriers, documents, and phone calls.

Every year about 2.7 million eligible Californians receive no CalFresh (SNAP) benefits, leaving roughly $3.5 billion in already-appropriated federal food dollars unclaimed. A common cause: screeners run the federal default rule (130% of the poverty line) and never apply California's higher 200% limit, so a working family that actually qualifies is told "no."

We built a working CalFresh eligibility advocate that pairs a deterministic, cited benefit engine with Opus 4.8 for the human layer. It takes a household's situation in any language, computes a cited CalFresh verdict and dollar amount, explains it in the person's own language (every digit and citation stays byte-identical), reads pay stubs, surfaces adjacent programs, and refuses to invent a dollar figure for any program it did not fully compute.

Our demo runs the highest-stakes path: a California household that looks ineligible under federal rules but is eligible under California's. One Door flips the verdict, shows the estimated benefit ($231/month), cites every rule that got there, translates the guidance, and preps the person for their county interview, all without inventing amounts for programs it did not verify.

Core principle: use AI for the messy human parts (language, documents, fact triage, advocacy, navigation) and keep benefit math deterministic, testable, and auditable. Final verification gate: 30 passed / 0 failed, with independent-oracle accuracy of 100% on 14 hand-worked cases.

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