Auto-respond to Slack messages as yourself using GPT and Google Docs RAG
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 6 nodes and runs on Slack events. Along the way it connects Slack, OpenAI Chat Model and Google Docs.
How it runs
Trigger: On Slack events.
- GPT 5 Slack Agent (AI Agent): runs an AI agent, with model: OpenAI Chat Model; 1 tool (Get a document in Google Docs); memory: Simple Memory
- Send a message (Slack): uses Slack
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.
- Still check Slack Trigger requires a signing secret on the Slack API credential (Slack Trigger).
Nodes used (6)
- Slack Trigger
n8n-nodes-base.slackTrigger - OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi - Simple Memory
@n8n/n8n-nodes-langchain.memoryBufferWindow - Slack
n8n-nodes-base.slack - Google Docs Tool
n8n-nodes-base.googleDocsTool - AI Agent
@n8n/n8n-nodes-langchain.agent
From the author
💬 GPT-5 Slack Impersonation Agent with RAG – Auto-Respond to Messages Using Live Project Docs Let AI handle your Slack conversations — and always have the right answer. This n8n workflow transforms GPT-5 into your on-brand Slack assistant, capable of…