Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnly, idempotent, openWorld, and non-destructive, so the safety profile is covered. The description adds meaningful context beyond that: results are web-sourced via 'Tavily API' and synthesized with 'grounded' (i.e., source-attributed) content. It still omits latency, caching, rate limits, and failure behavior for an open-world search.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.