Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and openWorldHint=true, so safety is covered. The description adds only that a "status and progress" value is returned, with no polling semantics, terminal states, expiry/failure behavior, or rate limits, which is thin for a task-status tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.