Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool has only one simple parameter, full schema coverage, a clean annotation, and an output schema, the description is complete enough. It tells the agent what it returns (lead count, scout instructions), when to use it, and its safety profile. No gaps remain for the agent to be confused.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.