Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given that there is no output schema and no usage guidance, the description is incomplete for a new agent. It lacks information about the returned object shape, how to interpret results, search scope (e.g., Drive-wide vs. a specific location), and how the results connect to other tools that require spreadsheet IDs.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.