AI personal assistant with GPT-4o, RAG & voice for WhatsApp using Supabase

🧠 Intelligent AI Assistant with RAG & Voice for WhatsApp – Built with GPT-4o & Supabase

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📌 About this workflow and its creator

Hi! I’m Amanda, a creator of intelligent automations using n8n and Make. I’ve been building AI-powered workflows for over 2 years, always focused on usability and innovation. This one here is very special to me – a truly advanced AI assistant that reads, listens, interprets and responds like a real human 🤖✨

This ready-to-use workflow acts as a powerful AI personal assistant capable of understanding messages via voice, text, documents, or even images. It supports full multi-channel operation (WhatsApp via Evolution API, Instagram, Facebook, and more), and includes advanced RAG capabilities using Supabase + GPT-4o. It’s designed to be highly extensible, with memory, prompt update tools, and knowledge base management.

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⚙️ What this workflow does

- 💬 Understands user input via text, document, audio or image (voice, OCR, PDF) - 🎤 Transcribes and interprets voice messages using OpenAI Whisper - 🧠 Understands prompts and user commands using GPT-4o via LangChain agent - 🗂️ Searches knowledge base using RAG + Supabase vector DB - 📄 Accepts documents and automatically indexes them for future questions - 🧾 Summarizes documents and stores metadata in Supabase - 🗃️ Offers memory support (PostgreSQL chat memory per user session) - 📧 Sends replies through WhatsApp (Evolution API), Instagram, Facebook, etc. - 📅 Manages schedules (via tool integration with Google Calendar) - 📬 Sends and searches emails (with support tools) - 🛠 Modular and expandable structure (tools for saving knowledge, deleting, updating prompt)