Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations provide readOnlyHint=true, destructiveHint=false, idempotentHint=true, and openWorldHint=true, which already inform the agent that this is a safe, repeatable read operation. The description adds minimal value by implying a GET request, but it does not disclose any additional behavioral traits such as rate limits, authentication needs, or what specific 'cloud' setting is retrieved. No contradiction with annotations exists.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.