Be Clear and Direct
Claude has no idea what you want except what you literally tell it. Treat it like a bright new employee on their first day: the more exactly you explain the task, the better the result.
The golden rule of clear prompting
Before sending a prompt, imagine showing it to a colleague and asking them to follow it. Could they produce the result you want from your words alone? If a person would be confused, Claude is confused too. Rewrite until a stranger could follow it.
Example: the unwanted introduction
The course asks Claude for a “haiku” — that is simply a tiny Japanese-style poem of three short lines, nothing more. The poem itself is not the lesson. Watch what Claude adds around it — a polite introduction line you may not have wanted:
The fix is almost embarrassingly simple: ask for what you want.
Example: making Claude commit to an answer
Ask a debatable question, and Claude gives a careful, balanced reply instead of one answer:
Balanced — but maybe useless if you wanted a decision. Again: just ask for one.
Claude cannot read your mind. Say exactly what you want — the length, the tone, what to skip, whether to commit to one answer. If a colleague would be confused by your instruction, so is Claude.