Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare the safety profile (readOnlyHint=false, destructiveHint=false, openWorldHint=true), and the description adds real value beyond them: the effect is off-chain DB membership ('No on-chain linkAddress transaction') and requires root-level authority. It does not explain what happens to consents that fail within a batch, which is the main remaining behavioral gap.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.