How to Turn a Vague Client Brief Into a Workable AI Prompt

The Problem You Know Too Well

Your client says: "I need copy for my homepage, something modern and catchy."

You ask for details. They reply: "You'll figure it out, do what feels right, I trust you."

Result? You spend 3 hours generating content with ChatGPT, send your proposal... and the client responds that they imagined "something completely different."

The real problem isn't the AI. It's the brief. And until you structure it, you'll keep going in circles.

Here's how to transform any vague brief into a prompt that delivers exactly what your client expects, even when they can't articulate it themselves.

The 5 Mandatory Questions Method

Before even opening ChatGPT or Claude, ask your client these 5 questions (or fill in the blanks yourself if it's impossible):

1. What's the measurable objective?

"Modern and catchy" means nothing. Dig deeper:

• Make people click a button?
• Reassure hesitant prospects?
• Explain a technical concept simply?
• Differentiate from competitors?

2. Who's the exact target audience?

Not "entrepreneurs." But:

• Tech startup founders in Senegal looking for a local service provider?
• French SMBs wanting to digitize their accounting?
• American freelancers comparing SaaS solutions?

3. What tone does the client expect?

Ask for concrete examples:

• "Find 3 websites whose writing style you like"
• "Do you prefer Apple's or Mailchimp's approach?"

4. What factual info is non-negotiable?

• Pricing, features, guarantees, timelines
• Proven customer benefits (numbers, testimonials)
• What truly differentiates the product

5. What length and format?

• 100 words or 800 words?
• Single paragraph or structure with subheadings?
• Bullet points or prose?

From Structured Brief to Workable Prompt

Once you have these answers, you can build a prompt that works.

Real example: initial vague brief

Client says: "I need copy for my homepage. My product is an inventory management app for restaurants."

Real example: after the 5 questions

Here's what you get:

• Objective: Convince restaurant owners to book a demo (not buy directly)
• Target: Restaurant managers with 10-50 seats in Ivory Coast, still managing on Excel
• Tone: Reassuring, concrete, not too technical. Reference: Qonto's language
• Key info: Reduces waste by 30% on average, works offline, 14 days free
• Format: 150-200 words, 3 paragraphs maximum

The resulting prompt

You're a copywriter specialized in SaaS landing pages for French-speaking Africa.

Write homepage copy (150-200 words max, 3 paragraphs) for a mobile inventory management app for restaurants.

Target: restaurant managers with 10-50 seats in Ivory Coast who still use Excel or paper.

Text objective: convince them to book a free demo (not direct sale).

Tone: reassuring, concrete, no technical jargon. Inspiration: Qonto style (simple, professional, accessible).

Mandatory elements to include:
- Reduces food waste by 30% on average
- Works without internet connection
- 14-day free trial, no credit card required

Desired structure:
1. Hook addressing the problem (waste, stock shortages)
2. The solution in one simple sentence
3. Concrete benefits + call-to-action for demo

Avoid: clichés like "revolutionary," "one-of-a-kind," "innovative solution."

This prompt delivers usable results on the first generation. No unnecessary back-and-forth.

Traps to Absolutely Avoid

Trap 1: Accepting "do your best"

If the client refuses to specify, offer 3 different directions in your prompt:

Generate 3 different versions of this copy:
Version A: premium tone, high-end target
Version B: educational tone, beginner target
Version C: direct tone, time-pressed target

The client will choose, and you'll have your direction.

Trap 2: Forgetting technical constraints

Always specify:

• Maximum character count (especially for meta descriptions, LinkedIn posts, etc.)
• Keywords to include for SEO
• Links or CTAs to integrate

Trap 3: Not providing reference examples

AI works better with models. Always add:

Example of expected style:
[paste here 2-3 sentences from a site the client likes]

Produce something of this quality, but for [your subject].

How KayaPrompt Simplifies This Entire Process

If you manage multiple clients with different briefs, recreating this structure every time quickly becomes heavy.

That's exactly the problem KayaPrompt solves: you create a prompt template with variables ({{target}}, {{tone}}, {{objective}}...), and reuse it in seconds by just filling in the fields.

No need to rewrite the entire logic. You keep the structure that works, you just change the parameters.

It transforms 20 minutes of prompt writing into 2 minutes of form filling.

Key Takeaways

A vague client brief never produces good AI results. But you can transform it into a workable prompt by:

1. Asking the 5 mandatory questions (objective, target, tone, key info, format)
2. Structuring your prompt with these answers
3. Providing concrete examples of expected style
4. Specifying technical constraints

And if you want to stop rewriting the same thing for every project, automate your prompts with templates. That's what makes the difference between a freelancer who struggles and one who scales.

Ready to Structure Your Prompts Once and For All?

Try KayaPrompt for free and create your first reusable prompt templates. No more starting from scratch with every client brief.

→ kayaprompt.com