Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds essentially nothing behavioral beyond that, but it does echo the tenant-scoping context, which is minor. It says nothing about pagination behavior implied by limit/offset, rate limits, or result shape.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.