Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no annotations, no output schema, and zero parameter descriptions, the description leaves too much important context unstated. An agent calling this tool would not know that the recursive parameter defaults to true, whether results are full paths or relative names, or how failures are reported. For a tool intended to discover projects on disk, more context is needed to invoke it correctly and interpret its output.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.