Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false. The description adds useful scoping ('eigene Eintraege des Nutzers') and output field context, but it does not disclose additional behavioral details such as authentication requirements, pagination, sorting, or what is not included.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.