AI marketing: How to write ad copy in Claude based on what already works

Creating perfect ad copy is an imperfect process.

First comes the brainstorming. You excitedly jot down a wave of ideas, casting the creative net far and wide. Great—you have options. Too many of them, in fact.

Then comes the tricky part: which one do you go with?

You mull over all your different angles, and after careful consideration, discard most. Finally, you’re left with the right one: the perfect option.

Except now that you read over it again, it’s not quite right. Hmm.

Adding a word here and replacing one there, you sand down the edges and polish it up until it feels… Better? Yes, that’s better.

Now, all that’s left is to hope it performs.

This is a long, painstaking journey with no guarantees of success. Most ad copy gets written from instinct. Marketers have a hunch about what will work and what won’t. They go based on gut-feel, refining ad copy until it feels perfect.

But why rely on instinct when you can rely on data?

With the Supermetrics for Claude integration, you can analyze all your past campaigns, identify the exact angles, hooks, and messaging that works best for your audience, and use these principles to instantly generate fresh new ad copy that you know will work.

This playbook teaches you how to do this—all from within Claude’s chat interface.

How to get started

Before running this workflow, you'll need a Supermetrics for Claude connection and access to the ad accounts where your existing campaigns live (Google Ads, Meta, LinkedIn, TikTok, etc.).

New to Supermetrics?

The quickest way in is to start a free Supermetrics trial, then connect your marketing data sources—our support documentation walks through this step by step.

Once you’ve connected your data sources, head to Claude, click Customize, select Connectors, search for Supermetrics, and authenticate your account.

Already a customer?

If you're already a Supermetrics customer, you've got two options.

Either add the Supermetrics connector in Claude (Customize → Connectors → search Supermetrics → authenticate), or add Claude as a destination from inside your Supermetrics Hub.

Your existing data connections carry over automatically—Claude can immediately query everything you've already set up.

The playbook

Follow these three simple steps:

1. Pull your previous campaign data
2. Analyze what copy works (and why)
3. Generate fresh copy based on your findings

Here’s how to get started.

Note: The prompts below are starting points—refine them as needed and continue iterating to see what delivers the best results.

Step 1: Pull performance data on your existing ads

Start by pulling performance data on your existing ads so you can see which ones delivered the best results.

Tips:

• Be specific about which campaigns you want to analyze.
• No particular campaign in mind? Try "all prospecting campaigns" instead.
• Ask Claude to show its source if the numbers look off.

Step 2: Identify what's actually working

Once you've got the data, ask Claude to find the patterns that separate your winning ads from the rest.

Tips:

• Push back if the analysis feels generic. Ask Claude to be more specific.
• Watch for one breakout winner skewing the picture. Ask if the patterns hold across multiple ads.
• Look beyond the words. Ask about tone, length, structure, and CTA style.

Step 3: Generate fresh ad copy built on the winning patterns

Now ask Claude to write new ad copy that uses the same patterns as your winners.

Tips:

• Give Claude context (audience, product, offer, your brand guidelines) for sharper output.
• Ask for variations split by angle (benefit-led, problem-led, social-proof-led).
• Tell Claude what to avoid, like words you don't use or claims you can't make.
• Refine the output yourself.

Claude will provide great first attempts, but apply your own human touch to give your copy the spark it needs to stand out. As yourself: does this sound like a person, or is it just a collection of words assembled together? Would I stop for this? Is there a word here that's doing nothing, or a sentence that could hit harder?

The result

What used to take half a day now takes one conversation. No exports, no spreadsheets, no doc-juggling—just data in, copy out.

But saving time isn’t the only benefit.

Every new piece of ad copy now starts from evidence, not instinct. That means less budget wasted on messaging that was never going to land. You're not guessing what your audience will respond to. Instead, you're building on what they've already told you works.

You can also explore more angles than before. Instead of selecting a few best guesses, you can start wider and test broader hypotheses, iterating quickly on whichever variations show promise. More angles, tested in parallel, all anchored in what's already working for you.