Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Adds substantial behavioral detail beyond annotations: the call is async (returns when queued, do not poll), it consumes a monthly grant, and prepaid credits are rejected. Annotations (readOnlyHint=false, destructiveHint=false) are consistent with a side-effecting but non-destructive queueing tool — no contradiction.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.