Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden and does disclose that this is a read operation (free, on-chain read) and lists the returned fields. However, it does not mention behavior for non-existent job IDs, potential errors, or any prerequisites beyond the job being completed/rejected, leaving some behavioral gaps.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.