Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the burden. It mentions optional scoping and the domain constraint that each quiz belongs to a lesson, adding useful context. However, it doesn't clarify whether course_id and lesson_id can be combined or what the output format looks like.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.