Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's moderate complexity (batch operation with cost implications), the description provides complete context: purpose, behavioral traits, sibling relationships, parameter usage, return values, and examples. With annotations covering safety aspects and an output schema present, the description focuses exactly on the value-added information an agent needs.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.