Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of behavioral disclosure. It states the primary effect (changing watch/subscription state) but does not disclose any side effects, permissions, reversibility, scope (e.g., current user only), or that the column itself is not deleted. This is minimal and provides little beyond the tool name.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.