Verified65% confidenceCautionExact time
When resuming from a LangGraph interrupt(), the entire node is re-executed from the beginning; side effects that occur before the interruption must be idempotent or moved to after the interruption.
3
Sources
65%
Confidence
Long-term
Relevance
10/11/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedNodes containing interrupts may restart from the beginning upon resumption; code before the Interrupt will execute again, and if side effects have already occurred they will be repeated, requiring idempotency protection with a business key or moving one-time side effects to a safe task boundary.78% similarUnverifiedIn LangGraph, when a node is resumed after triggering an interrupt, the entire node reruns from the beginning, and any tool calls or write operations that occurred before the interrupt are re-executed each time the run is resumed.76% similarVerifiedLangGraph combined with the Checkpointer mechanism can pause at any node, resume after auditing, and supports checkpoint-based resumption.75% similarUnverifiedLangGraph provides interrupt_before / interrupt_after hooks that allow inspection logic to be injected before and after specific nodes74% similarVerifiedIn LangGraph, HITL (Human-in-the-Loop) is implemented through a breakpoint mechanism, where the Agent pauses at a node, serializes and persists the state, and resumes execution after human confirmation72% similar
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