Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It only says 'Delete,' which implies destruction, but does not specify whether the deletion is permanent, cascading, or requires special permissions. It also doesn't disclose the response format or side effects, leaving critical behavioral traits undocumented.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.