Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a parameterless listing tool, the description is largely complete. It names the domain, the scope, and where results live. The only minor gap is that it does not explicitly state the return shape (e.g., 'returns a list' or pagination behavior), but the wording strongly implies a list and no output schema is provided.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.