Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already cover readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the description does not need to restate safety. It adds context about 'trusted' and 'ready-to-serve' files, but no further behavioral traits such as pagination, filtering, or auth scoping beyond what the schema already states. The description is transparent but not additive beyond the structured metadata.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.