How to Migrate an n8n Prototype Agent to LangGraph for Production Use

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As n8n workflows grow in complexity — incorporating AI agents, retries, human approvals, and long-running executions — they can become difficult to manage and trace. LangGraph, a framework designed for stateful agent orchestration and explicit control flow, offers a more structured alternative for production-grade agentic systems. The recommended migration approach involves auditing each n8n node by its responsibility and mapping it to a LangGraph equivalent, rather than rewriting the entire workflow at once. Only the orchestration layer typically needs to move, while external integrations like CRMs and APIs can remain in place. A real estate AI assistant example is used throughout the guide to illustrate the step-by-step transition from an n8n prototype to a LangGraph production agent.

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