Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations provide clear hints: readOnlyHint=true, destructiveHint=false, idempotentHint=true, openWorldHint=true, indicating a safe, non-destructive, repeatable operation that may return partial data. The description adds no behavioral context beyond this (e.g., what 'active' means, response format, or error conditions). However, since annotations cover key safety aspects, the bar is lower, and the description does not contradict them, warranting a baseline score for minimal added value.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.