Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With one required parameter, full schema coverage, an output schema, and annotations, the description covers all essential agent needs: what it returns, how to authorize, when it refuses, and where to discover slugs. The pricing/pass details are not needed for correctness but introduce minor ambiguity.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.