Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. 'Summarize' implies a read-only operation with no side effects, but the description does not explicitly state that it is non-destructive, nor does it explain what exactly the summary contains (e.g., structure, format, or level of detail). It provides minimal behavioral context, which is adequate for a simple read tool but not complete.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.