n8n Production AI Agent with Queue Mode Scaling

What was done

n8n's built-in AI agent builder lets teams design context-aware agents with memory, tools, and guardrails on a visual workflow canvas. The most common pattern pairs a chat trigger with OpenAI and SerpAPI for real-time web search, backed by a memory buffer for natural conversations. For production scaling, queue mode architecture separates webhook handling from workflow execution — a three-worker setup on C5.large processes 72 requests per second with under 3-second latency and zero failures under load, up from 100 concurrent executions in standard mode.

Stack