Facebook Messenger chatbot with GPT-4.1 & human escalation support

Description

Who is this for?
This n8n workflow is designed for businesses, customer support teams, and page administrators who want to automate their Facebook Messenger responses while maintaining the ability to escalate to human agents when needed. It's perfect for e-commerce stores, service providers, and organizations that receive customer inquiries through Facebook Messenger and want to provide instant, intelligent responses 24/7. The workflow can handle both text messages and attachments, automatically detects when human intervention is needed, and seamlessly transfers the conversation to a human admin.

What this Workflow Does
This n8n workflow creates an intelligent Facebook Messenger chatbot that can understand and respond to customer messages in both English and Bengali. It automatically classifies incoming messages to determine if they require human assistance, processes attachments by identifying file types, generates appropriate responses using AI, and escalates conversations to human admins when necessary. The workflow maintains conversation context through memory and can reference external documents for more accurate responses.

Key Features
Multi-language Support**: Automatically detects and responds in English or Bengali
Message Classification**: Determines if a message requires human intervention
Attachment Handling**: Identifies and processes different file types (images, documents, etc.)
AI-powered Responses**: Generates intelligent, context-aware responses using OpenAI
Admin Escalation**: Seamlessly transfers conversations to human agents when needed
Memory Management**: Maintains conversation context for more natural interactions
Document Integration**: Can reference external Google Docs for information
Webhook Verification**: Properly handles Facebook's webhook verification process

Requirements
Facebook Page with Messenger functionality
Facebook Graph API credentials
OpenAI API credentials
Google Docs API credentials (optional)
n8n Instance (self-hosted or cloud)
Admin Facebook user ID for escalation

Workflow Components
1. Webhook Setup
Webhook**: Receives incoming messages from Facebook Messenger
If3**: Verifies webhook subscription requests
Respond to Webhook**: Completes the verification process

2. Message Processing
If**: Determines if the message contains text or attachments
Classify text**: Analyzes text messages to determine if human intervention is needed
AI Agent1**: Identifies attachment types

3. AI Response Generation
AI Agent**: Generates intelligent responses to user messages
OpenAI Chat**: Powers the AI Agent with language model capabilities
Think**: Ensures responses match the user's language and tone
Memory**: Maintains conversation context
HTTP**: Enables external data retrieval
Google Docs**: Allows referencing external documentation

4. Escalation Logic
If2**: Determines if escalation is needed based on classification
Edit Fields1**: Prepares data for escalation messages
Wait3**: Adds delay before sending messages

5. Message Delivery
Admin Message**: Notifies admin when escalation is needed
User Message**: Confirms to user that their message was forwarded
Admin Message1**: Notifies admin about attachments
User Replay Message**: Sends AI-generated responses to users

Notes
The workflow uses a custom session key for memory management
Admin ID should be updated to match your Facebook admin user ID
The system is configured to respond in both English and Bengali
Webhook verification requires a specific verify token (set to "admin" in this example)
The workflow includes appropriate delays to prevent rate limiting

Ideal Use Cases
Customer service automation for e-commerce stores
Lead qualification and initial response
After-hours customer support
Information dissemination for organizations
Appointment scheduling and basic inquiries
Product information and recommendation requests

Support & Help
WhatsApp**: Chat on WhatsApp
Discord**: SpaGreen Community
Facebook Group**: SpaGreen Support
Website**: https://spagreen.net
Developer Portfolio**: Codecanyon SpaGreen