Classify and respond to Facebook Messenger inquiries with GPT-4, Slack and Sheets
Ready for 3.0Ready for 3.0. This template uses no nodes that n8n 3.0 removes. No removed nodes, versions or helpers found. Static check, last run 2026-10-19.
What this workflow does
This AI workflow has 23 nodes and runs on a schedule (every hour) (plus 1 other trigger). Along the way it connects Slack, Facebook Graph API, OpenAI Chat Model and Google Sheets.
How it runs
Trigger: On a schedule (every hour) (plus 1 other trigger).
- Fetch Facebook Conversations (Graph API) (Facebook Graph API): uses Facebook Graph API
- Slack: uses Slack
- Format Incoming Message Data (Edit Fields (Set)): sets 5 fields: Message, Senders Name, Sender Email…
- AI – Classify Message (Lead / Query / Spam) (AI Agent): runs an AI agent, with model: Model – GPT-4 Language Model; memory: Memory – Conversation Context Buffer; output parser: Parse AI Output (JSON Parser)
- Route Messages by Category (Switch): routes items into 3 branches
- Slack: send and wait for a reply
- Slack: send and wait for a reply
- Log to Google Sheets – Spam Messages (Google Sheets): append or update
- Check Lead Approval Status (Switch): routes items into 2 branches
- Check Query Approval Status (Switch): routes items into 2 branches
…plus 8 more steps. See the full node list below.
Services it uses
Before you upgrade to n8n 3.0
Nothing in this workflow is removed in n8n 3.0, so it should import and run after the upgrade.
Nodes used (11)
- Error Trigger
n8n-nodes-base.errorTrigger - Slack
n8n-nodes-base.slack - Schedule Trigger
n8n-nodes-base.scheduleTrigger - Edit Fields (Set)
n8n-nodes-base.set - Facebook Graph API
n8n-nodes-base.facebookGraphApi - OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi - AI Agent
@n8n/n8n-nodes-langchain.agent - Structured Output Parser
@n8n/n8n-nodes-langchain.outputParserStructured - Simple Memory
@n8n/n8n-nodes-langchain.memoryBufferWindow - Switch
n8n-nodes-base.switch - Google Sheets
n8n-nodes-base.googleSheets
From the author
📊 Description Streamline Facebook Messenger inbox management with an AI-powered categorization and response system. 💬⚙️ This workflow automatically classifies new messages as Lead, Query, or Spam using GPT-4, routes them for approval via Slack, responds on…