Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, and non-destructive, so safety is covered. The description adds genuine value by flagging that the response carries an evidence deadline and days-remaining, but it omits the default open-only scoping and any pagination/limit behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.