Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a single-parameter tool, the description omits essential context: expected output format, how the gating result is returned, whether it mutates state, or how the URL should be sourced. The complexity of the task (checking multiple criteria) is only implicitly hinted, leaving an agent without enough information to reliably invoke it.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.