Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, openWorldHint=false and destructiveHint=false, so the safety profile is covered. The description's 'Read-only' largely restates that, but the 'reads items of one kind' scoping does add that it performs a single-category batch lookup rather than a general search or mutation. No return shape, ordering, or behavior on missing ids is disclosed.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.