Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity (single required param, no enums, output schema exists, read-only), the description fully covers purpose, usage, and behavioral traits. The output schema handles return value documentation. No gaps remain for an agent to misinterpret this tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.