Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations provide readOnlyHint=true, destructiveHint=false, idempotentHint=true, and openWorldHint=true, indicating a safe, repeatable read operation. The description adds minimal value by specifying 'GET', which aligns with read-only behavior, but doesn't disclose additional traits like authentication needs, rate limits, or error conditions. With annotations covering core safety, a baseline score is appropriate.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.