Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a parameterless, idempotent, non-destructive tool with no output schema, this description is nearly complete: it states what will happen, when it will happen, and why. The only minor gap is no explicit pointer to the complementary 'resume' tool, but the sibling list already provides that context.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.