Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a tool with three parameters, no annotations, and no output schema, this one-sentence description is far from complete. It does not describe return values, optional parameter semantics, preconditions, side effects, or how this tool fits into a larger workflow, making it inadequate for reliable agent invocation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.