Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the output schema, return values need no explanation. The description identifies the action, the resource type, the owner-private scope, and the trash side effect, which is sufficient for a relatively simple deletion tool. It leaves alternative routing to the usage dimension rather than making the tool uncallable.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.