Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The annotations already indicate destructive and idempotent behavior. The description adds meaningful context beyond this: stored credentials are deleted, the underlying bucket/files are preserved, repeated deletion succeeds, and it returns true on success. This gives the agent a fuller picture of side effects and behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.