Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With no output schema, the description must carry return-value information, and it does so reasonably well by enumerating the payload components (team, sections, funders, item counts, subjects, sample items). For a read-only single-resource detail endpoint with a fully documented parameter and complete annotations, this is close to sufficient; a routing note versus siblings is the only real gap.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.