Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, idempotentHint=true, openWorldHint=false, so the safety profile is fully covered by structured data. The description adds the fact that the tool surfaces settings, accounting policy, and a legalEntityType that may be unset, which is mild useful context but no permissions, caching, or freshness behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.