Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full burden. It discloses that message bodies are not returned, that console_url deep-links and auto-opens, that pagination requires passing next_cursor as cursor, and that links should be given to the tenant. This is exceptional transparency for a read-only list tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.