Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden and does disclose a meaningful behavioral trait: the source is always WooCommerce and always current, never served from editorial cache — a freshness/authority guarantee not present in the schema. It still omits behavior for an unknown SKU, permission requirements, or latency characteristics, which keeps it short of a 5.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.