Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, so the read-only nature is covered. The description adds account-level scoping ('in the account') and the HTTP GET endpoint, which clarifies the operation's scope and method, but it does not disclose response format or pagination behavior beyond what the schema provides.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.