Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given zero parameters, no output schema, and strong annotations, the description fully covers what the tool does, what it returns, and how to use it in context. It explains the exact data fields and the relationship to get_output, making it complete for a simple list tool with no additional complexity.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.