Prompt Engineering Techniques

Audience: professionals who use Claude at work, no coding or API knowledge needed. Anything marked verified was checked against Anthropic's documentation or help center on 2026-10-16. Design guidance is widely taught practice, not a documented rule.

The core habits (verified, from Anthropic's prompting guide)

• Be clear and direct. Claude responds well to explicit instructions. If you want "above and beyond", ask for it; do not hope Claude infers it.
• Think of Claude as a brilliant new colleague with no context about your company, your audience or your standards. The more precisely you explain, the better the result. Golden rule: show your prompt to a colleague with no background; if they would be confused, Claude will be too.
• Say what the output should look like: length, format, tone, audience, what to include or leave out.
• Give the reason behind a request or rule; it helps Claude handle cases you did not list.
• Use numbered steps when order or completeness matters.
• Show examples of what good looks like (3 to 5 diverse examples work well), and mark them clearly as examples.
• Separate your material from your instructions: label pasted documents or data (for example with simple tags like <document> ... </document>) so Claude does not confuse them with instructions.
• For long documents, put the documents first and your question last.

A simple prompt recipe (design guidance)

1. Role or context: who you are, who the output is for.
2. Task: the one thing you want done.
3. Material: the text, data or files, labelled.
4. Constraints: length, format, tone, must-include and must-avoid.
5. Success check: "Before answering, check that each recommendation cites the source paragraph."

Weak: "Summarise this report." Better: "Summarise the attached quarterly report for our regional sales managers in under 150 words. Lead with revenue versus target, then list the three biggest risks. Plain language, no jargon, bullet points."

Permission to be uncertain (verified)

Tell Claude it may say "I don't have enough information". This reduces made-up details. For long documents, ask it to quote the relevant passages first, then answer from them.

Common mistakes

• One vague sentence for a complex task.
• Mixing several unrelated tasks in one message.
• Pasting material with no label or no stated purpose.
• Not saying who the audience is.
• Asking for "good" or "professional" with no definition.