LangGraph State Machine Patterns — How to Stop AI Agents from Going Off-Script

LangGraph State Machine Patterns — How to Stop AI Agents from Going Off-Script The "Agent Does Something Unexpected" Problem LLM-powered agents that run outside their intended scope — infinite loops, unauthorized operations, non-interruptible processes. This happens when agent state management is implicit rather than defined. LangGraph solves this with a graph-based state machine that makes state transitions explicit. Built on LangChain, it lets you define exactly which states exist and how the