Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds that the content is a policy body tied to this specific harness, which is modest but real context. It says nothing about whether the returned policy is plain text or structured, and the idempotentHint=false on a parameterless getter is left unexplained.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.