Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, openWorldHint and destructiveHint=false, so the safety profile is covered. The description does add genuinely useful non-annotation context — that unauthorized related fields are masked in the response — but leaves unexplained what determines authorization (user permissions, field-level access) and whether masking changes the object shape.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.