Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool is simple (one parameter, has output schema), the description is minimally sufficient. However, it omits mention of potential pagination, result limits, or error cases, and the dependency on a prior call is only hinted at in the schema, not in the main description. This leaves minor gaps for an agent to infer.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.