Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden. It states it 'gets' customers, implying a read operation, but does not disclose return format, pagination, sorting, timezone handling, or any side effects. For a simple read, this is minimal but lacks important 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.