Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, providing safety context. The description adds value beyond annotations by specifying return fields (keepLiquidSol, minSweepSol, paused, nonce, last sweep epoch) and the 'null if none' edge case, which is useful behavioral detail.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.