AI system prompt generator & optimizer (n8n + OpenAI)
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 4 nodes and runs when a chat message arrives. Along the way it connects OpenAI Chat Model.
How it runs
Trigger: When a chat message arrives.
- AI Prompt Generator (AI Agent): runs an AI agent, with model: OpenAI Chat Model; memory: Simple Memory
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 (4)
- OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi - Simple Memory
@n8n/n8n-nodes-langchain.memoryBufferWindow - AI Agent
@n8n/n8n-nodes-langchain.agent - Chat Trigger
@n8n/n8n-nodes-langchain.chatTrigger
From the author
This workflow acts as a System Prompt Optimizer Agent. You send it a draft prompt or goal, and it returns: 1. A rewritten optimized system prompt that is clear, specific, and actionable. 2. A recommendation for the best OpenAI model to use based on reasoning…