Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnly/idempotent/openWorld, and the description goes well beyond them: it names the live data sources (on-chain contract state, largest accounts, DexScreener), the curve-liquidity semantics and the `curve` field, the merged pump.fun forensics, the $0.005/call cost with 10 free/day and x402 payment-required results, and the error contract (isError on invalid input or upstream failure, not charged). That is exactly the beyond-annotations context an agent needs.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.