Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, destructiveHint=false, openWorldHint=false, and idempotentHint=true, so the safety profile is covered. The description adds genuinely new context by naming what each returned job contains (status, scheduled time, per-platform permalink or error), which matters for a read tool with no output schema, though it says nothing about scoping, pagination, or history depth.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.