Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate non-read-only and open-world behavior. The description's statement 'Report a chat as spam to Telegram' is consistent but adds no extra behavioral context (e.g., that the report is sent to Telegram servers, or potential outcomes). It meets the minimum but does not enrich understanding beyond annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.