Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden for behavioral disclosure. While 'update' implies mutation, it doesn't address critical aspects like required permissions, whether updates are atomic or partial, rate limits, error handling for partial failures, or what happens to unspecified fields. For a batch mutation tool, this leaves significant gaps.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.