Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations declare destructiveHint=true, which could imply permanent deletion. The description adds crucial context that the template 'goes to the archive, not away' and that list_archive shows it and restore_from_archive brings it back, clarifying the exact reversible nature of the operation. This goes beyond the annotation and prevents a misconception.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.