Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the entire behavioral burden, yet it only conveys that this is a read of team-scoped data. It says nothing about required permissions/admin scope, whether the result is paginated, how the 'limit' interacts with total results, or what the returned hook objects contain.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.