Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given three required parameters, no annotations, and an output schema present, the description covers the essential aspects: purpose, usage, fallback, and example. No explanation of output format is needed due to output schema, but some guidance on errors or prerequisites would add completeness.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.