HEKOS
A WhatsApp-bot-powered order and subscription management platform for water, gas and milk delivery businesses.
Problem
This project came from a request by the water dealer we personally buy from, for their own business — they had no ready-made solution that actually fit. We looked at competing water-delivery automation software and found none of it was fast, fluid, or easy to use enough; customer experience was usually an afterthought.
Solution
We found our edge in building an AI-powered system. So the dealer could check sales from home and delivery staff could use the same system from their phone, we built a fully web-based architecture: NestJS for the backend, React for the interface, Supabase (PostgreSQL) for the data layer, Anthropic Claude for smart automation, and WhatsApp integration for the customer registration/order flow.
Real-time stock tracking and automatic customer registration via WhatsApp
The biggest technical challenge was reflecting changing stock data accurately in real time during deliveries, while reliably processing customer registration data coming in through WhatsApp. We tested this flow and confirmed it writes correctly to the database — connecting it to the real WhatsApp Business API is now in progress, pending customer visits and approval. For the multi-dealer structure, we used Supabase's row-level security (RLS): each dealer's data stays isolated while running on the same infrastructure.
Result & Impact
- The dealer can now see a customer's address with one click, without having to memorize it.
- Customer registration happens automatically through the WhatsApp bot — the flow has been tested and writes correctly to the database.
- Delivery staff can see real-time stock levels and exactly how much product they need to load.
Actively used at a real water delivery business, currently onboarding its first customers.