Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given there is no output schema, no annotations, and only two parameters, the description carries full weight for usability, but it leaves critical context unspecified: the exact settings added, whether the config is created or modified, the role of api_key, and what the command returns. The simple action is understandable, but too little information exists for a correct invocation with confidence.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.