Safety & ops
What is Human-in-the-Loop?
Human-in-the-loop means a person must confirm or take over before a side effect.
It is a control, not a slogan. Calendar writes and refunds are typical gates.
Why it matters
Human-in-the-loop (HITL) means a person must confirm or take over before a side effect occurs. It is the most reliable guardrail for write actions — calendar events, emails, payments, data changes.
HITL is a control mechanism, not a slogan. It has a specific trigger (the agent requests a write) and a specific gate (the human approves or rejects).
Key takeaways
- 1HITL is a gate for write actions — confirm before side effects.
- 2It is the most reliable guardrail for high-stakes actions.
- 3Implement HITL as a workflow step, not a general principle.
Common mistakes
- ✕Claiming HITL without actually gating write actions.
- ✕Asking for confirmation too often (alert fatigue) or too rarely (missed risks).
Related terms
Concept neighborhood
Terms linked from Human-in-the-Loop in the glossary graph.