Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. It discloses a key behavioral trait: it changes no evidence rule, readiness gate, or veto, indicating a read-only operation. It also mentions quoting the prediction, giving a hint about output. However, it lacks details on permissions, error behavior, or rate limits, which are not covered by annotations. For a read tool, this is acceptable but not comprehensive.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.