Create an intelligent Facebook Messenger chatbot with GPT-4o-mini & message memory
## Who is this for?
Businesses and developers who want to automate customer support or engagement on Facebook Messenger using AI-powered responses.
## What does it do?
Creates an intelligent Facebook Messenger chatbot that:
- Responds to messages using OpenAI (gpt-4o-mini)
- Batches rapid-fire messages into a single AI request
- Maintains conversation history (50 messages per user)
- Shows professional UX feedback (seen indicators, typing bubbles)
## How it works
1. **Webhook Verification** - Handles Facebook's GET verification request
2. **Message Reception** - Receives incoming messages via POST webhook
3. **Message Batching** - Waits 3 seconds to collect multiple quick messages
4. **AI Processing** - Sends combined message to OpenAI with conversation context
5. **Response Delivery** - Formats and sends the AI response back to Messenger
## Setup
1. Configure **Facebook Graph API** credential with your Page Access Token
2. Configure **OpenAI API** credential with your API key
3. Set your verify token in the "Is Token Valid?" node
4. Register the webhook URL in Facebook Developer Console
## Key Features
- **Message Batching**: Combines "Hey" + "Can you help" + "with my order?" into one request
- **Conversation Memory**: Remembers context from previous messages
- **Echo Filtering**: Prevents responding to your own messages
- **Response Formatting**: Cleans markdown for Messenger's 2000-char limit
