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. The word 'istantanea' (snapshot) implies a non-mutating read operation, and 'timestamp' adds useful context. However, it does not mention session requirements or potential errors, which are relevant for a tool interacting with a real Amazon session.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.