Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the simplicity (1 parameter, no output schema, no annotations), the description covers the basic purpose and use case. However, it lacks details about the return structure (e.g., list of guides with fields like name, description, ranking), which is important for an agent to understand the tool's output without an output schema.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.