Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so safety is covered. The description's only extra signal is the vague phrase 'with storage diagnostics', which never says what diagnostics are included or whether the read is paginated. With annotations doing the safety work, the bar is lower, but 'storage diagnostics' adds almost no usable behavioral context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.