Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With no annotations, no output schema, and zero schema description coverage on two parameters, the description would need to do much heavier lifting. It does not explain the result of the fork, the target collection semantics, or error/permission conditions, leaving significant gaps for a tool that creates new resources.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.