Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, idempotentHint=true and destructiveHint=false, so safety is covered by structured data. The description adds genuinely new behavioral context beyond that: that saved configuration is not proof of a live workflow, and that production access must be verified in Google Cloud rather than in this tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.