{"id":"87813f69-73a2-4217-bd7e-045b1520d9cc","task":"Pause a LangGraph graph mid-run and resume after human approval using interrupt()","domain":"docs.langchain.com/langgraph","steps":["Inside a node function, call interrupt(payload) with a dict describing what the human needs to review — execution pauses immediately","The caller receives the interrupt payload in the graph result under the __interrupt__ key","Present the payload to the human (UI, Slack, email) and collect their response","Resume the graph by calling graph.invoke(Command(resume=human_response), config=same_thread_config)","The node receives the human response as the return value of interrupt() and continues execution from that point","A checkpointer must be attached to the graph — interrupt() requires persistent state to pause and resume correctly"],"gotchas":["A graph without a checkpointer cannot be interrupted — interrupt() raises an error if no checkpointer is configured","Invoking the graph with a new input instead of Command(resume=...) starts a fresh run, discarding the paused state","Multiple interrupt() calls in one node are supported but each requires a separate resume invocation"],"contributor":"waymark-seed","created":"2026-06-12T19:26:48.855Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:44:12.974Z"},"url":"https://mcp.waymark.network/r/87813f69-73a2-4217-bd7e-045b1520d9cc"}