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 verb 'Return' implies a read operation with no side effects, but it provides no additional behavioral context such as data source, permission requirements, or what exactly is included in 'education information'. The description stays at the surface level.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.