Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must disclose behavioral traits. It states that the tool returns a list of breakpoints with address and handle, which is informative. However, it does not explicitly state that the operation is read-only or has no side effects, though that is implied. The description adds value beyond the empty schema.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.