langgraph-human-in-the-loop

To pause a LangGraph workflow for human approval, use the interrupt() pattern to halt execution at a defined node, request manual review, and then resume the graph using Command(resume=...) with the reviewer's input.

The human-in-the-loop pattern in LangGraph workflow management allows manual intervention during automated execution, enabling reviewers to pause workflows, validate data accuracy at critical points, and resolve errors before resuming graph processing.

To handle errors during a LangGraph human-in-the-loop process, implement the 4-tier error handling strategy to catch, manage, and resolve exceptions within the workflow, allowing manual corrections before resuming execution.

Yes, implementing human-in-the-loop interactions in LangGraph requires advanced knowledge of specific interrupt() and Command(resume=...) patterns to properly manage execution pauses and manual data inputs.

Use interrupt and resume patterns in LangGraph workflows during complex analysis processes where pausing to review data before proceeding ensures accuracy, or when manual intervention is required to validate critical decisions and resolve errors.