# QA: Interrupt (Headless) — LangGraph (Python) > Stub — authored for column completeness. This is a testing-kind demo > (see `kind: "testing"` in feature-registry.json) and does not warrant a > full manual checklist. ## Prerequisites - Demo is deployed and accessible - Agent backend is healthy ## Test Steps - [ ] Navigate to /demos/interrupt-headless - [ ] Send a scheduling prompt (e.g. "Book an intro call with sales") and verify a time-slot picker popup appears in the left app surface (not in the chat) - [ ] Click one of the time-slot buttons and verify the popup disappears and the agent confirms the booking back in the chat ## Expected Results - Page loads without errors - Interrupt resolves via the plain button grid (no `useInterrupt` render prop, no in-chat picker) and the agent continues the run with the picked slot