Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Beyond the annotations, the description discloses the crucial behavioral trait: the tool only produces a link and nothing is set up until the user approves it, which reconciles the readOnlyHint with an apparently stateful action. It also states the data-retention posture (nothing stored for the link, host logs keep IPs up to 7 days), adding privacy context the annotations cannot express.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.