Human-in-the-Loop Systems

Human-in-the-loop (HITL) systems require human approval or input at specific points in an automated workflow. The human is a mandatory checkpoint — the agent cannot proceed without sign-off. HITL design covers approval interfaces (making decisions fast and informed), escalation patterns (when and how the agent asks for help), context presentation (giving the human enough information to decide without overwhelming them), and the critical question of what deserves a human checkpoint versus what can be fully automated.