By category

AI agents, by what you sell

What stops an AI shopping agent depends a good deal on what you sell. Apparel fails at the size picker, food and drink at stock that moved since the feed was written, home and furniture at a delivery cost nobody publishes. These pages describe the failure each category runs into structurally, rather than how often it happens.

These are about mechanism, not frequency. How often each failure actually occurs in a category is the benchmark’s question, not this page’s. The benchmark pages use this same list of categories and publish one only once enough of its stores have been measured at every stage.