Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the behavioral burden. It discloses a read-only listing operation and mentions authentication-dependent accessibility, which is useful. However, it does not mention response format, pagination, inclusion of closed boards, or error behavior, leaving some ambiguity for a tool with zero annotation support.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.