Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of behavioral disclosure. It implies a mutation but does not state whether the operation is idempotent, what happens if the element does not exist or is not a Requirement, or whether there are any side effects. It also does not mention any permissions or reversibility. The minimal description does not go beyond the obvious.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.