Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. 'Get' implies a read-only lookup and the text discloses the returned state values and an attempt ledger, which is real behavioral content. However, it says nothing about polling cadence, behavior for an unknown/expired job_id, or retention of completed jobs.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.