Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It discloses real behavior: an LLM cascade with automatic fallback, enrichment sourced from the official website, and cache return on already-enriched records (implying idempotency and cost/latency). It does not state whether enrichment persists/overwrites data, permission requirements, or latency expectations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.