AI agents can now complete purchases and manage subscriptions on a person's behalf, and most checkout and account flows were never built to be operated by anything but a human hand. Here is how product teams should think about agent-readiness before that traffic arrives.

When an AI workflow misbehaves, most teams rewrite the prompt. A cleaner diagnostic separates four distinct layers, prompt, context, loop, and harness, each with its own failure mode.

Building an AI feature is the easy part. Getting people to actually use it is a behavior change problem, and most product teams still treat it like a rollout instead of a habit to build.