Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnly, idempotent, non-destructive and openWorld, so the safety profile is covered. The description adds genuine value beyond that: it discloses which network is read (devnet, overridable via XSOLANA_RPC_URL) and summarizes return content (project, every pool's balance, every named record with found/missing status), which matters since there is no output schema.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.