Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a tool with no parameters and no output schema, the description is minimally viable but leaves gaps. It doesn't mention what kind of help is provided (e.g., a list of tools, usage examples, or error explanations). Since there is no output schema, the description is the sole source of behavioral context, and it lacks sufficient detail to fully understand the tool's output.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.