I run WiFi for a few hostels using TP-Link Omada controllers. Wanted customers to buy data and check their remaining balance straight from WhatsApp, no need to message me directly. Sounded simple.
Source: [Dev.to](https://dev.to/coolbuoy/i-built-a-whatsapp-bot-to-check-wifi-balances-and-tp-links-own-api-fought-me-the-whole-way-4fp8)