Apr 26, 2026 · Artificial Intelligence

LangGraph Human-in-the-Loop: Let AI Pause for Human Approval at Critical Steps

This article explains why AI agents need human‑in‑the‑loop checkpoints, introduces the interrupt() coroutine that freezes graph execution, shows how to embed it in tools and full graphs, compares three intervention modes, and provides production‑grade tips and common pitfalls.

AI agentsCheckpointerHuman-in-the-Loop

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LangGraph Human-in-the-Loop: Let AI Pause for Human Approval at Critical Steps