Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, openWorldHint, and idempotentHint, covering the safety profile. The description adds only the environment-scoping constraint and the fact that it lists 'all' backups, but it does not describe pagination, error behavior, or what constitutes a backup. With annotations present, the description meets the minimum but adds little beyond the obvious.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.