Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the behavioral burden. It discloses the key side-effect boundary: the cancellation is only possible before the seven-day window ends, after which erasure is irreversible. It doesn't cover permissions or response behavior, but the most important behavioral context is present.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.