Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate readOnlyHint=false, destructiveHint=false, so the description correctly implies a non-destructive write operation (queuing). It adds crucial behavioral details: it consumes a monthly grant, returns as soon as queued, and does not support polling. The only gap is that it doesn't explicitly state the job's asynchronous nature or what happens if the grant is exhausted, but overall the transparency is high.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.