Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the single optional parameter, existing output schema, and read-only/idempotent annotations, the description is complete. It explains authentication behavior, scoping of results, content trust, and next-step requirements, leaving no critical gap for an agent deciding whether and how to invoke the tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.