Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden for behavioral disclosure. It correctly conveys that this is a mutating batch operation, but it does not mention idempotency, duplicate-label handling, partial failure behavior, or authorization requirements. The primary side effect is clear, but important behavioral details are absent.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.