Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description must carry the burden. The verb 'List' communicates a read-only behavior, which is useful but minimal. It does not disclose additional traits like return format, pagination, or authorization needs, but for a simple list operation this may be sufficient.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.