WhatsApp API

An interface that lets systems and bots send and receive WhatsApp messages programmatically. It is the foundation of automated support, notifications and CRM integrations.

A WhatsApp API is a programming interface that connects a system (website, CRM, chatbot) to WhatsApp, allowing messages to be sent and received without a person operating the app manually. There are two main families: the official API (WhatsApp Business Platform by Meta, via providers such as Twilio) and unofficial APIs, which automate WhatsApp Web and tend to be cheaper and easier to start with, at the risk of the number being banned.

In practice it is used for: automated support with chatbots, notifications (order confirmations, appointment reminders), campaigns, and connecting WhatsApp to internal systems. Communication usually happens through HTTP requests to send messages and webhooks to receive replies in real time.

A concrete example: a clinic connects its scheduling system to a WhatsApp API; when an appointment is booked, the system automatically sends a confirmation message and, one day before, a reminder, and the patient can reply "reschedule" to reach a human agent.