Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple delete tool with one parameter and no output schema, the description covers the essential action and irreversibility. However, it does not specify what the return value looks like (e.g., success message, deleted object), nor does it warn about any prerequisites or consequences beyond deletion. Given the simplicity, this is adequate but has clear gaps around post-condition behavior and distinction from close/reopen.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.