Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already provide comprehensive behavioral hints (readOnlyHint=true, destructiveHint=false, idempotentHint=true, openWorldHint=true), so the bar is lower. The description adds minimal value by specifying '(GET)', which aligns with the read-only annotation. However, it doesn't disclose any additional behavioral traits like what 'health' encompasses, response format, or potential error conditions. The description doesn't contradict annotations, so no contradiction flag is raised.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.