Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must carry the transparency burden. It reveals that the tool resumes a task using its persisted conversation, which is a useful behavioral trait beyond just 'resume'. However, it does not disclose potential side effects, such as state changes or whether the operation is idempotent, leaving some uncertainty.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.