Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's low complexity (two optional params, no output schema, no annotations), the description is minimally adequate but has gaps. It does not explain the return format, the effect of the limit/min_len parameters, or the fact that 'all strings' is bounded by defaults. Since there is no output schema, the description should at least hint at the output shape, which it does not.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.