Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool has 3 parameters, no output schema, and no annotations, the description is incomplete. It fails to explain return value details (e.g., PID type, error codes), parameter usage, or behavioral nuances like what 'detached' entails. Sibling tools cover similar actions, so more detail is needed.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.