WhatsApp OpenAI Chatbot with Postgres Memory & API Calls

This n8n workflow creates a sophisticated AI-powered chatbot for WhatsApp Business, leveraging OpenAI Assistant to handle customer queries intelligently. It starts with a Chat Trigger that captures incoming messages and session data. A condition node checks for additional customer info like name or age, generating customized prompts if present. Data preparation nodes format queries and context into structured inputs for the AI.

The core uses OpenAI nodes with detailed prompts instructing the assistant on response guidelines, available APIs, and preventing hallucinations. Postgres Chat Memory ensures conversation history is maintained across sessions, providing seamless context. Flexible API calling allows integration with any endpoints for tasks like order lookups or CRM updates.

Benefits include time-saving automation of support interactions, personalized responses via memory and data, and scalability for sales funnels. Use cases span customer support (query resolution), sales (lead qualification), and knowledge base Q&A, reducing manual effort and boosting satisfaction.