langgraph-human-in-the-loop

You pause LangGraph execution by integrating human-in-the-loop interrupt patterns that suspend graph execution at critical nodes, waiting for user input before resuming. This ensures accuracy and user approval in workflows.

Yes, LangGraph supports calling multiple interrupts simultaneously in parallel branches and resuming all of them within a single call to streamline complex validation workflows and decision-making.

Handling JSON-serializable payloads when resuming an interrupted LangGraph workflow requires utilizing checkpointer and thread ID configurations for proper interrupt handling and state restoration.

Create validation workflows in LangGraph by using interrupts for loop validation and re-prompting users when inputs are invalid. This integrates human review directly into the graph execution flow.

Prevent repeated execution of interrupt code after resuming a LangGraph graph by ensuring idempotency within the workflow, which guarantees that previously interrupted code does not duplicate execution upon resumption.