Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity (no parameters, no output schema, basic read operation), the description provides sufficient context: it names what is shown and the masking behavior. However, it does not describe the structure or format of the configuration returned, which could be helpful but is not critical for a config viewer. The presence of readOnlyHint annotation compensates for some missing context.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.