How to Build a Slack RAG Agent with n8n (Step-by-Step Tutorial)

In this tutorial, learn how to use Slack + n8n automation to create an AI-powered Slack agent that automatically responds to queries such as HR FAQs, legal questions, and team assistant requests. You’ll see how to set up Slack with n8n, configure OAuth permissions, and integrate RAG (Retrieval Augmented Generation) with Google Docs for intelligent, context-aware answers. By the end, your Slack AI bot will be running on n8n with RAG-powered document retrieval, able to reference in-house knowledge and reply with up-to-date information. ⚡️Comment *n8n* in the comment section below if you’d like for me to send you this free n8n workflow template for easy setup! RESOURCES & LINKS 📍 Sign up for n8n here: https://n8n.partnerlinks.io/automatewithmarc ⚡️Access my library of FREE n8n Workflow Templates here: https://n8n.io/creators/marconi/ 📩 Get in touch with me via Instagram @automatewithmarc or email automatewithmarc@gmail.com ⏱️ TIMESTAMPS 00:00 Intro: Building a Slack AI Bot with n8n + RAG 00:26 Setting Up Slack in n8n 01:43 Configuring OAuth + Permissions for Slack + n8n Integration 04:17 Setting Up Slack Event Subscriptions in n8n 06:25 Creating & Testing Slack Channel Automation with n8n 11:03 Integrating Google Docs into Slack AI Bot (RAG for HR Policies & FAQs) 16:39 Testing Slack n8n AI Agent Queries (HR FAQ + Legal Advice) 19:05 Conclusion & Next Steps with Slack + n8n + RAG #n8n #n8ntutorial #n8nautomation #aiagents #aiagent #aiautomation #aiworkflow