Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
An output schema exists, so return-value explanation isn't required, yet the description still previews the returned fields. Combined with coverage of defaults, source limitation, auth, rate limits, and refresh cadence, nothing an agent needs to call and interpret this tool is missing.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.