Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true, idempotentHint=true, and readOnlyHint=false, so safety is covered. The description adds value beyond them: it discloses that the target is a public-facing gallery, imposes an ownership restriction, and clarifies the run-recipe scoping rule — real behavioral context not present in the annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.