A useful prompt tells an AI assistant what you need, what it should work with, and what a good result looks like. You do not need a long instruction or a clever opening line. Start with a small task you can judge for yourself.

The useful idea

Give the task, the relevant context, the shape of the answer, and the limits. Then improve one thing at a time.

1. Say what you want to leave with

‘Help me with an email’ leaves several decisions open. Is it an invitation, a complaint, or a request for information? Who will receive it? Instead, name the result: ‘Draft a short email asking a supplier to confirm a delivery date.’ That gives you something specific to check.

Keep your first request small. One email is easier to evaluate than a complete communication strategy. If you are not sure what the finished result should be, ask for two possible outlines first. Choose one before asking for a full draft. This keeps the decisions with you.

2. Give the facts the answer needs

The assistant needs the details you would give a colleague doing the same job. Include the audience, the purpose, and the source facts. For a delivery email, that might be the order reference, the expected date, and why a delay matters. Leave out unrelated history.

Separate facts from preferences. ‘The workshop starts on Monday’ is a fact to preserve. ‘Use a friendly tone’ is a writing preference. If a detail is missing, say so. A request to mark missing information is more useful than a polished draft that silently fills the gap.

  • Task: what should the assistant produce?
  • Context: who is it for, and which facts matter?
  • Format: an email, a list, a table, or a short explanation?
  • Limits: what must stay unchanged, and what must not be invented?

3. Try a complete prompt

Here is a fictional example you can adapt. It includes enough material to write the message without sharing a real customer record. Notice that the word limit and tone come after the actual job. They help shape the answer; they do not replace the facts.

Example prompt
Draft an email to a supplier asking them to confirm delivery.

Facts:
- We ordered 24 notebooks, reference SAMPLE-204.
- Delivery was expected on Thursday.
- Our workshop is on Monday, so we need to know whether to make another arrangement.
- We do not know the current delivery status.

Keep it under 100 words. Be polite and direct. Ask for an updated delivery date. Do not say that the order is late or invent a tracking number.

4. Check the draft before changing the tone

Read the first answer against the supplied facts. Does it still say 24 notebooks? Does it ask for a delivery date rather than claim to know one? Does it accidentally promise that you will cancel the order? A fluent sentence can still make the wrong commitment.

Only after that check, refine the wording. ‘Make the first sentence shorter and keep the delivery question unchanged’ is easier to judge than ‘make it better.’ Change one thing, compare the versions, and keep the change only if it helps the message do its job.

5. Save the useful structure

Once the prompt works for your task, turn the changing details into placeholders: [quantity], [order reference], [expected date], and [reason]. Keep the instruction about unknown details. That constraint matters more than preserving every word of the original prompt.

Try the template with a different example before treating it as a routine. If the new case needs a different decision, adjust the instructions. A good template saves repeated explanation while leaving room for your judgment. It should help you think clearly, not make every situation sound the same.

Further reading

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