Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=false, destructiveHint=false, idempotentHint=false, openWorldHint=true, so the safety profile is covered and the description does not contradict it. However, for a credential-minting endpoint the description adds nothing about whether repeated calls mint multiple valid tokens, whether the token is shown once, or what permissions are required — information an agent genuinely needs.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.