How to have an AI agent answering on WhatsApp 24/7

August 27, 2026 · 5 min read · JetLevel

In Portugal, WhatsApp is, for many, the preferred channel for talking to businesses. Fast, informal and direct. The problem is that it demands constant availability. An AI agent on WhatsApp solves this: it replies in seconds, at any time, without increasing the team.

What is an AI agent on WhatsApp?

It is an artificial intelligence system connected to the WhatsApp Business API. It receives messages, understands what customers ask, looks up information (stock, orders, calendars) and replies like a well-trained employee, in natural language. And the channel matters: Portuguese customers prefer sending a message to calling — whoever answers first wins.

What can the agent do?

• Answer frequently asked questions immediately;
• Qualify leads before passing them to the sales team;
• Schedule meetings by checking the calendar in real time;
• Check order or reservation status;
• Forward complex cases to a human, with the conversation recorded.

What do you need to implement it?

1. WhatsApp Business API account — needed for advanced automations;
2. Dedicated phone number — new or migrated;
3. Knowledge base — FAQs and product information;
4. Integrations — CRM, calendar, orders;
5. Escalation rules — when to hand the case to a human.

How much does it cost?

The costs fall into three parts: the agent development, the WhatsApp Business API (charges per conversation) and the AI platform. For an SMB, a basic agent is usually more affordable than hiring someone to cover messages outside working hours.

Use examples and tips to get started

It already makes sense in clinics (appointments and reminders), online stores (orders and returns), real estate (leads and viewings) and restaurants (reservations and hours). To get started: automate the most common questions, define a clear tone of voice and test before launching, monitoring conversations in the first few days.