Approval Nodes

Sometimes, the best AI action is to wait for a human.

The Breakpoint

You configure LangGraph to interrupt_before=["ExecuteTransaction"]. When the graph reaches this node, it halts. The state is saved. The process idles. The UI shows the user: "The agent wants to send $500. [Approve] [Reject]".

Resuming

When the user clicks "Approve", you call graph.invoke(Command(resume="approved")). The graph wakes up, sees the approval signal, and proceeds to execute the transaction.