Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already establish this as a read-only, idempotent, non-destructive call, so the key behavioral safety is covered. The description contributes the stateful notion of a 'currently active' environment but does not add return-shape or state-source details. It is consistent with annotations and adequate for this simple getter.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.