Agent UI Is Runtime Infrastructure (opens in new tab)

Agent product spinners tell the truth badly. There’s this common pattern in agent UX: a person clicks a button and after a few moments a spinner shows up in the center of the page and the product locks up. The user has no idea what tool is running, what changes are happening in the system, what subagents or agents are involved. Later on the team can go back and read through a long transcript to figure out what happened. It’s better than nothing, but ultimately useless for a human doing real w...