Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity (no parameters, output schema provided, annotations covering safety), the description adequately covers the purpose, trigger, and expected output. The output schema presumably details return values, so no further description is needed. The description is fully sufficient for an agent to select and invoke the tool correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.