Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare the safety profile (readOnlyHint=false, idempotentHint=false, destructiveHint=false). The description goes beyond them by specifying the return artifact in detail: a unified-renderer PDF report plus Markdown, images, and metadata, matching the web app's ZIP. It does not restate the caching/regeneration behavior covered by the force parameter.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.