Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must reveal behavioral traits. It only mentions 'Remove', implying mutation, but does not disclose whether removal is reversible, what happens if the user is not a member, or any permission requirements. The description is too sparse to inform an agent of side effects.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.