Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. It states the tool lists products and returns specific fields, but does not disclose any side effects, authentication requirements, rate limits, or explicitly confirm it is read-only. This lack of behavioral context is a significant gap for a mutation-free tool, though 'list' implies read-only.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.