Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of behavioral disclosure. It only says 'Delete product' without explaining side effects, such as whether the deletion is hard or soft, whether it cascades to related records, or whether permissions are required. The 'items.delete' hint adds little beyond the already-implied destructive nature.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.