Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is covered. The description adds almost nothing beyond naming the content: it does not say whether the whole base is returned, whether results are static or live, or how it is meant to be consumed. For a zero-parameter tool this leaves the agent with little operational context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.