SentryOne
the last check before a supplier payment becomes irrevocable: the sat 69-b list, account history and the banxico receipt, in the minute before the spei
- 1st place, capital one track, hackmty 2026
what it is
a mexican small business pays its suppliers through spei, and an accepted transfer cannot be reversed. if the account is wrong, or the sat later lists that supplier under article 69-b, the loss is decided in that same minute.
sentryone runs six deterministic controls over every line of the run and comes back with a level, a state and a proposed action: hold, verify or release, always with the evidence on screen. there is no language model in the decision. an assistant reads and proposes, and a person executes.
the real 69-b list ships with the repo, 14,234 rows, so the check works with no network. as of september 13, 2026 the suite was 2,912 tests across 150 files with zero failing.
built with
- TypeScript
- Bun
- Hono
- Zod
- React
- Vite
- Tailwind CSS
- PostgreSQL
- TimescaleDB
- Gemini API
- ElevenLabs
- Twilio
team
- Patricio Garza
- Adan Flores
- Fabricio Banda
- Fabian Garza