Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full burden for disclosing behavioral traits. It states the tool returns status but does not mention if it is read-only, if it requires authentication, or if it blocks. The description is minimal and leaves behavior largely unspecified.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.