Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are present, so the description must carry the behavioral burden. The verb 'list' and the phrase 'names of previously created' imply a read-only operation and indicate the return content, but it does not disclose potential effects of the payload parameter or any edge cases. It is minimally transparent.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.