Who Pays for the Model's Mistake: Designing Liability Into Agent Products
An agent books the wrong flight. It sends an apology email to the wrong customer. It writes a database migration that drops a column three services still read from. In each case the model produced a plausible-looking action, executed it, and moved on. And in each case somebody absorbed a real cost — a rebooking fee, a damaged relationship, an incident bridge at 2 a.m.
Here is the uncomfortable part: most AI products have no answer for who that somebody is. The question never comes up in the design review. It surfaces later, one ticket at a time, in a support queue where an agent improvised a $40 credit because the customer sounded angry and the rep had no policy to point at. Multiply that by a few thousand tickets a month and the unit economics quietly rot — not from a dramatic failure, but from a slow leak nobody scoped.
"The model made a mistake" is not a support escalation. It is a billing event. And the products that survive the agentic era will be the ones that designed for that event before the first angry ticket, not the ones that improvised refunds by vibes until the gross margin went negative.
