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Applied AI · Session 4

Make On-Brand Creative with Claude Design

Turn your brand guide into a Design System Claude follows. Then make ads, spin up new versions, resize them for every placement, and check them before they ship.

Seven prompts. Copy, fill in the brackets, paste.

Jake Hodges, AI Front DeskSeptember 16, 202610 min read
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The problem

Brand rules that live in a PDF don't get followed

Most brand rules live in a PDF that gets emailed to vendors and new hires. One person ends up checking everything, so they become the bottleneck. And designs drift: drop an image into a deck and its colors sneak into your palette. "Modern and approachable" can't be checked. "Are sentences under 20 words?" can. A Design System turns your rules into something Claude follows when it makes new work, and checks old work against.

What you need

Before you start

1

A paid Claude plan with Claude Design: Pro, Max, Team or Enterprise. Claude Design is in beta. On Enterprise, your admin turns it on.

2

At least one brand source: your website, a brand guide PDF, or even just your logo.

3

Real examples: ads and pages that were approved and published. Not concepts. You can change things later.

Step by step

Build it once. Use it on every asset.

1

Write down your rules (optional)

If your rules are only in your head, get them on one page first. You'll upload it in Step 2.

Prompt 1: Brand rules doc
Help me write a one-page brand rules doc I can upload to Claude Design. Ask me one question at a time. Cover:
- Our voice in 3 words, with one example line for each
- Words and phrases we always use, and ones we never use
- Our colors with hex values, and which ones are never changed
- Our fonts and where each one is used
- How much space the logo needs around it
- The claims and numbers we're allowed to make

When we're done, give me the doc as a short list of rules. Every rule must be something a person could check with a yes or no.
2

Build your Design System

Open Claude Design and start a new design system. Claude shows you a short form. Developers can connect GitHub or a codebase. Marketers can skip that: upload your brand guide PDF, logo files and rules doc, and paste your website link. Pick the surfaces you need (social and ad templates, email templates, slide decks) and a starting point: document your existing brand, evolve it, or start fresh. Then look through what it built: colors, shades, fonts, logos and voice notes. Comment on anything that's wrong and Claude fixes it.

Prompt 2: Start the system
Create a new design system for [your brand].
Tip: If your first ads come out wrong, the fix is usually in the Design System, not the ad. Tweak the fonts, colors or voice notes there, then make the ad again.
3

Share it with your team

On a Team or Enterprise plan, turn on sharing with your organization. Now everyone makes work from the same system.

4

Make your first 4 ads

Fill in the brackets with real details. Generic input gets generic ads, so add what you already know works from your own marketing.

Prompt 3: First 4 ads
Using our Design System, make our first 4 ads.

What we're promoting: [product, offer or lead magnet]
Who it's for: [role, business type, size]
What we want them to do: [book a demo / download / register]
Proof we can use: [real numbers, results, customer types. Nothing else counts as proof.]
Where it runs: [LinkedIn feed, 1080x1080]

Make 4 ads, each with a different angle:
1. The problem: name the pain in their words.
2. The result: what changes after.
3. The proof: lead with one number from the list above.
4. The contrast: before vs. after, or us vs. doing nothing.

Rules:
- Use only colors, fonts, spacing and components from the Design System.
- Headline 8 words or fewer. It has to read at thumbnail size.
- Use only the proof I gave you. Don't invent stats, quotes, logos or customers.
- If something is missing, ask me before you start.

Under each ad, give me the headline, one line of post copy, and the angle it's betting on.
Example fill-in (what we used live)

What we're promoting: our free report, "How franchises make more money with AI lead follow-up". Who it's for: marketing and operations leaders at franchise brands with 50+ locations. What we want them to do: download the report. Proof we can use: 3.3 million messages sent; 145,000 front-desk staff hours saved; one boutique fitness studio went from over 13 hours to 8 minutes to reach a new lead. Where it runs: LinkedIn feed, 1080x1080.

5

Multiply one ad into three directions

One ad isn't enough to test. Pick the one you like best and get three versions that grab attention in different ways.

Headline-led

type does the work. Still readable at thumbnail size in the feed.

Image-led

the image carries it. Headline drops to four words, rewritten, not shrunk.

Proof-led

leads with a number that gets its own space. Often the B2B winner.

Prompt 4: Three directions
Make three new versions of it using our Design System. Keep the same message and offer, and change what grabs attention first:

1. Headline-led: the words do the work. It must still read at thumbnail size.
2. Image-led: the image carries it. Cut the headline to four words or fewer by rewriting it, not by shrinking the text.
3. Proof-led: lead with one real number from the original ad or from what I give you, and give it its own space. Don't invent a number.

Use only colors, fonts and spacing from our Design System. Under each version, write one line on what bet it's making and who it's most likely to stop.
Tip: To change one thing, click the element, add a comment like "change to 3.3M" and hit Send to Claude. It changes just that element. You can also edit by hand in Claude Design, or export to Canva or Illustrator.
6

Resize for every placement

Once an ad is right, Claude remakes it for every size you run. It rearranges the layout instead of shrinking it. Swap in your own sizes, and save your usual ones in the Design System so you don't have to list them every time.

Prompt 5: Every size
Put this ad on a new page. Make it in these sizes: 1080x1080 feed square, 1200x628 link ad, 9:16 story, 600x200 email header.

For every size:
- Rearrange the layout to fit the new shape. Never shrink the original and add bars around it.
- As the space gets smaller, rewrite the headline shorter. Don't just make the text smaller.
- Keep the same order: whatever people read first in the original stays first. The logo keeps its clear space.
- Use only colors, fonts and spacing from our Design System.

Under each size, write one line on what you changed and why.
Prompt 6: Safe zones
Look up today's safe zones for [Instagram Reels, Stories, LinkedIn feed]. Check each size against them and move any headline, logo or button out of the areas the app covers with captions, buttons and comments. List what you moved.
7

Check it before you export

The tool makes it. You decide if it ships. Four calls stay with a person:

1
Which direction

it gives you options. It doesn't know which one fits your market.

2
Is it on-brand

run the quick check below before you export.

3
Is it true

every claim, number, price and offer. It can make any of them look finished.

4
Can you use it

faces and likenesses, logos you don't own, anything with legal exposure.

70 to 75%

of what it costs to run an AI agent is the people checking the work.

Source: McKinsey
Prompt 7: Quick check before export
Check this against our Design System before I export it.

1. Score each area PASS, WARN or FAIL: color, type, spacing, logo, voice. WARN means it's defensible but off pattern. FAIL means it breaks a rule in the system.
2. For every WARN and FAIL, name the rule and give the exact fix (the hex value, the size, the rewritten line).
3. List every claim, number, price and offer in the ad so I can check each one is true.
4. Flag anything I may not have the right to use: faces, other companies' logos, stock or AI-made images of real people.

Don't go easy on a FAIL because the work looks good, and don't invent rules that aren't in the system. End with one line: SHIP, FIX FIRST or REMAKE.
Tip: Checking a batch from a vendor or a new teammate? Start a new project with your Design System selected, drop in all the files, and ask for a list of changes. Pick the ones that matter and pass those along. Don't forward the whole list.
8

Download or send it where it goes

Claude Design builds in HTML, so exporting converts it. There's no Download button: click Share in the top right. From there you can download a PNG, or send it to PowerPoint or Claude Code. Click More to send it to connected apps like Google Drive (it can name every file for you) or Canva for easy edits. You can also publish it as an artifact to get one link to share with your team.

Video and audio

Beyond static ads

Jake is still testing these, so treat them as places to start.

Higgsfield (video)

has a plugin that connects to Claude, so you can ask Claude Design for a video scene from your brand. It can get expensive.

HeyGen (video)

a cheaper way to test. It doesn't connect directly, so Claude works with it in the browser.

ElevenLabs (audio)

turn your text into an AI voiceover, then adjust how the voice sounds. Listen back to make sure it doesn't sound too AI.

Your next 30 minutes

Do this today.

  • Build your Design System (about 20 minutes)
  • Make one asset with Prompt 3
  • If it's off, fix the Design System, not the ad, then make it again
  • Resize it, run Prompt 7, and export