Create AI-Powered WhatsApp Quiz Bot with GPT-4o-mini and Supabase Storage

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Built by Danielle Gomes Danielle Gomes
Created on June 05, 2026

Description

Quiz Assistant via WhatsApp with Supabase and OpenAI

Create a quiz assistant that helps users study a topic of their choice through WhatsApp. Using Supabase and OpenAI, this workflow captures missing user data, stores it, and delivers dynamic quizzes tailored to each topic.

Main Use Cases

Guide users through personalized study sessions
Collect and store user preferences (name + topic)
Automate quiz creation with AI
Deliver interactive content via WhatsApp

How It Works

This workflow is composed of three main paths:

1. User Info Collection

Triggered by an incoming WhatsApp message
Retrieves existing user data from Supabase
Checks if the name and topic are already defined
If not, sends WhatsApp prompts to collect missing info
Updates Supabase with new entries

2. AI Quiz Generation

Once name and topic are confirmed, the Merge node consolidates all inputs
Data is sent to the AI Agent (OpenAI Chat + Memory)
The agent generates a quiz based on the selected topic

3. Response Delivery

The quiz is sent back to the user via WhatsApp
Flow ends, ready to restart with the next interaction

Nodes Used (5)

AI Agent
@n8n/n8n-nodes-langchain.agent
HTTP Request
n8n-nodes-base.httpRequest
OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi
Simple Memory
@n8n/n8n-nodes-langchain.memoryBufferWindow
Supabase
n8n-nodes-base.supabase