n8n Agents The n8n AI Agent node ( ) is a multi-turn LLM driver with sub-nodes for the model, memory, tools, and an optional output parser. This skill is the deep guide to designing agents and the LangChain family around them. For the high-level "where an agent fits in a workflow" picture, see n8n-workflow-patterns — this skill goes one level down into how to build it well . For node-type formats: in workflow JSON the LangChain nodes use the long form ( , , , , , , ). When you call / , use the short form ( ). See n8n-mcp-tools-expert for the format rules. --- Pick the right node first Reachin…