Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full disclosure burden. 'List all' indicates a read-only operation with broad scope, which is helpful, but it does not disclose pagination behavior, ordering, return format, or potential size limitations. It provides some behavioral context but leaves meaningful gaps.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.