Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. It discloses the return scope (all tasks under the milestone), but does not state whether the operation is read-only, whether large task counts are returned unbounded, or what the output structure looks like. The 'get' prefix implies read-only but this is not explicit.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.