Overview
A simple instruction can be enough to start useful work, but simplicity is not the same as vagueness. In one workflow, the agent announced that a keyword research tool was complete but produced a Markdown skill file rather than an actual web application. The general objective was understood, but the artifact type was not enforced strongly enough.
The failure mode is important: an output can be related to the request and still fail the operational need. The remedy is not necessarily a longer prompt. It is a more precise statement of what must be usable at the end.