Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full disclosure burden. It does reveal that the response includes all stories, implying a potentially large payload, but says nothing about read-only semantics, error behavior for an unknown sprint_id, permission requirements, or whether pagination applies to the embedded stories.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.