Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
There are no annotations, so the description carries the disclosure burden. It explicitly says the tool returns a JSON array and lists all returned fields, which tells an agent what to expect. The verb 'List' implies a non-mutating read, though it does not mention authorization, ordering, or edge cases.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.