Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden but offers minimal behavioral insight. 'Delete' implies a destructive, irreversible mutation, but the description doesn't disclose critical traits like whether deletion requires specific permissions, what happens to contained objects, if there are rate limits, or what the response looks like. For a destructive operation with zero annotation coverage, this is inadequate.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.