Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a zero-parameter, read-only, idempotent tool, the description adequately communicates what is returned (URL), why it's used (canonical catalog snapshot), and a content detail (verification metadata). No output schema exists, but the description covers the return type adequately. Minor gaps such as URL format or authentication are not critical for this simple tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.