Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Description discloses republish behavior for live sites, saved URL changes for unpublished sites, and the BUCKET_VISIBILITY_CHANGE_LOCKED error – all beyond the annotations' basic flags. This gives the agent concrete expectations about side effects and failure modes.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.