Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description states it 'Retrieve[s]' data, which aligns with readOnlyHint=true, and lists the included fields (total value, P&L, allocation). However, it does not add context beyond the annotation, such as data freshness, currency, or whether positions are included. The annotation already covers safety, so the description provides only minimal additional behavioral context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.