Level Up Your n8n RAG Agents: Smart Multi-Query & Reasoning (with Supabase + GPT-5)

Is your current n8n RAG setup too basic?

If you’re connecting your AI agent directly to a vector store tool, you’re missing out on crucial control and accuracy. In this tutorial, I’ll show you a more advanced and reliable method for building AI agents that can truly reason with your knowledge base.

We’ll move beyond the simple setup and explore a powerful technique using a sub-workflow as a tool. This approach allows your AI agent to: