AI WhatsApp Chatbot with Evolution API & Notion CRM Integration

Transform your WhatsApp Business number into an intelligent, 24/7 AI customer assistant that handles inquiries automatically while seamlessly integrating with your Notion CRM. This production-ready n8n workflow combines Evolution API, Claude AI, and smart automation to deliver professional customer support without any third-party chatbot platforms.

What this workflow does

When customers message your WhatsApp Business number, the workflow instantly receives the message via Evolution API and processes it through Claude AI to generate contextual responses. The system handles both text messages and voice notes by transcribing audio through OpenAI Whisper before AI processing. A built-in sentiment analysis filter automatically detects and discards bot messages like out-of-office replies or delivery confirmations, ensuring your AI only responds to genuine human inquiries.

Every incoming message triggers automatic Notion CRM integration that matches contacts by phone number, updates existing lead statuses, and creates new contact records. When conversations require human intervention, the bot sends Telegram alerts and automatically pauses itself for that specific contact in your Notion database, allowing seamless handoff to human agents.

Use cases

• Handle cold outreach lead responses automatically with personalized AI conversations
• Process inbound customer inquiries 24/7 without manual monitoring
• Qualify prospects and update CRM records while maintaining conversation history
• Provide instant customer support responses during off-hours
• Scale WhatsApp customer engagement without hiring additional support staff

Technical details

This workflow leverages Evolution API for WhatsApp integration, Claude AI for natural language processing, OpenAI Whisper for voice transcription, and comprehensive Notion database management. Built using n8n's core nodes including conditional logic (if), data transformation (set), custom scripting (code), flow control (no op, wait), and Notion API integration.

The workflow includes smart pause/resume functionality controlled directly from your Notion CRM through a dedicated "WA ChatBot Status" field, giving you complete control over automated responses per contact.