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Brazilian firm built WhatsApp flood alert system in 27 minutes using AI and AWS

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Dati, a company based in Blumenau, Brazil — a city historically prone to flooding from the Itajaí-Açu River — automated its internal flood contingency plan using an AI agent built on Amazon QuickSight and a custom MCP server. The system monitors the city's public river-level dashboard, updated hourly, and automatically sends WhatsApp alerts to leadership whenever the water crosses a defined threshold. The solution was deployed on the night of September 11, 2026, when Civil Defense projected the river would reach 9 metres by 2 a.m., and the entire setup took just 27 minutes to build. The contingency plan itself had been digitised in early July 2026 as a knowledge document within Amazon Quick, enabling an AI agent to answer staff questions about safety procedures and alert levels. The project replaced a manual process that required dozens of repeated checks over multi-day flood events.

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