Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden and does substantial work: single-use semantics, a one-hour expiry, the signed-in identity context, and a security caveat about distribution. It omits what happens on reuse (error vs. silent failure) and any permission requirements, but this is unusually rich disclosure for a link-generation tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.