Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the behavioral burden. It communicates that this is a read-style operation ('Get') and specifies the returned categories (version, deployment type, build info), plus the diagnostic use case. It stops short of stating error behavior or explicitly confirming no side effects, but these are low risk for a version query.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.