Human review

Also called: code review, manual review, human sign-off, PR review, human approval step

A person reading and approving what an agent produced before it goes live. It is the most expensive check, and the one that catches the problems that matter most to the business, such as building the wrong thing.

For example: The agent's work passes every test, but in human review the founder notices it reworded the refund policy, and sends it back.