Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no annotations, no output schema, and a simple input schema with 0 parameters, the description is incomplete. It lacks details on output format, behavioral context (e.g., permissions, data freshness), and doesn't help differentiate from sibling tools. For a system info tool, more context is needed to guide effective use.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.