Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden. It states the action (list) and scope (open, accessible boards), which implies a read-only operation. However, it does not disclose potential behavioral traits such as authentication requirements, pagination, or rate limits. For a simple list tool this is acceptable but not exhaustive.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.