Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, openWorldHint=true, and destructiveHint=false. The description adds the active-by-default scoping behavior and the optional name filter, which is useful context. It does not cover pagination, return format, or sorting, but the annotation safety profile lowers the burden.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.