n8n LangChain

n8n LangChain is the plug-in that embeds the LangChain framework into n8n, the open-source workflow-automation platform. The node lets makers drag-and-drop LLM functions—prompt templates, Retrieval-Augmented Generation, or LangChain agents—straight into visual workflows alongside 350+ native n8n integrations such as Slack, GitHub, or Postgres. Inside the node you pick a model (GPT-4, Claude, Llama 3), set temperature, and map input fields; under the hood the plug-in spins up a LangChain chain, executes it, and passes the JSON result to the next node. Built-in credential management stores API keys in n8n’s vault, while retry and timeout settings protect against runaway token costs. Because n8n triggers can be cron jobs, webhooks, or event queues, LangChain logic can fire on schedule, on user actions, or in response to data changes—turning everyday workflows into AI-augmented pipelines without writing code. Teams use N8n LangChain to generate personalized emails, summarize support tickets, or enrich CRM records in minutes.