Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It does disclose a key behavioral trait (soft-delete and restorability), which is valuable, but it omits other context such as whether the channel is still visible in active lists, if any side effects occur, or the mechanism for restoration. The disclosure is minimal but not misleading.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.