Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity (0 parameters, no output schema), the description is minimally adequate. However, with no annotations and no output schema, it lacks details on return format (e.g., task IDs, statuses) and behavioral context (e.g., scope, limitations). For a list operation in a server with many sibling tools, more completeness would help distinguish it and set expectations.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.