Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity (1 optional param, no required params, output schema present), the description is minimally complete for a read operation. However, it omits clarifying the format options and any server-side behavior (e.g., whether the rules are static or update dynamically). The output schema likely provides return structure, so the description does not need to explain that, but the lack of parameter context leaves gaps.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.