Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With an output schema present, annotations for read-only/open-world behavior, and 100% schema coverage, the description covers the crucial workflow decisions: when to use directly, when to call another tool, when to ask the user, and what not to pass. The schema additionally covers page_token handling, making the definition complete for agent invocation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.