The Ad Framework: Hook, Body, CTA

Every ad that converts is built on the same three parts understanding them is the foundation for every Claude prompt in this course

Every ad that converts, regardless of platform, format, or budget, is built on the same three parts: a hook that stops the scroll, a body that builds the case, and a call to action that tells the viewer exactly what to do next.

Part 1: The Hook

The hook is the first thing someone sees. On Meta it is the first 125 characters of your primary text, which is the amount visible before "See more" cuts it off on mobile. On Google it is your first headline. On a video ad it is the first 3 seconds.

The hook's only job is to make the right person stop.

It does this in one of three ways.

Question hook asks something the target audience has been thinking about. "Are you still building client websites by hand, one element at a time?" "What would your business look like with a booking system that runs itself?"

Statement hook makes a bold, specific, or provocative claim. "I built a booking system for a dentist in 6 hours. It paid for itself in 3 days." "Most small business websites lose 60% of visitors before they ever scroll."

Outcome hook opens with the result and not the process. "3 new clients this month, all from a website that books them automatically." "From a PDF contact form to 200 online bookings per month. One afternoon of work."

The hook is not a generic headline. "Professional Web Design Services" is not a hook, it is a category. A hook makes a specific person feel seen or curious or both.

Part 2: The Body

The body is what comes after the hook and its job is to bridge from the hook to the action.

The best ad bodies are short. Most people skim. You have 2 to 4 sentences on Meta before they decide whether to click. On Google you have 4 descriptions of 90 characters each.

What the body should do: acknowledge the problem in one sentence to validate that the hook's implication is real, introduce the solution in one sentence using plain language, build credibility or urgency in one sentence using a specific result, a time commitment, or a key differentiator, and transition to the CTA because without this they know what you do but not what to do next.

What the body should not do: explain everything about your service, list every feature or benefit, use agency jargon like "holistic," "bespoke," or "seamless solutions," or make claims you cannot support.

Part 3: The CTA

The CTA tells the person what to do after reading the ad.

It must be specific and not just "Learn More" but something like "Book a free 20-min call" or "See how it works." It must be low commitment especially in the first ad they see because you want to ask for the click and not the sale. And it must be matched to your offer so if the ad is for a free audit the CTA is "Get your free audit" and not "Buy now."

CTA options that work for service businesses: "Book your free call" for lead generation where you qualify on the call. "See the examples" for visual services that sends people to a portfolio or case study page. "Get a free quote" which works when the prospect knows what they want. "Download the guide" for a content lead magnet with lower intent but higher volume. And "Watch the demo" for tools or products to reduce friction for complex offers.

The 125-Character Rule on Meta

On Meta the primary text gets truncated at approximately 125 characters on mobile which is the dominant format in 2026. Anything after that requires the viewer to tap "See more."

Most people do not tap "See more." Most people do not even read the body. They see the image or video, glance at the first line of text, and decide.

This is why the hook is everything on Meta. Treat the first 125 characters as the entire ad. Everything after is a bonus.

Count your hook character by character. Cut every word that is not doing work.

Ad Formats and What Matters Most

For a single image ad the most important element is the image plus the headline with the first line of primary text as secondary.

For a video ad the most important element is the first 3 seconds with the thumbnail and caption as secondary.

For a carousel ad the most important element is the first card plus headline with each subsequent card's copy as secondary.

For a Google Search RSA the most important element is the first headline with the second headline and description as secondary.

For a Google Display ad the most important element is the image plus headline with the description as secondary.

In every format the first thing they see is the most important. Design and write that first then fill in the rest.

The Formula in Writing

For Meta single image or video ads use this structure:

• [HOOK — under 125 characters]
• [PROBLEM — 1 sentence]
• [SOLUTION — 1 sentence]
• [CREDIBILITY OR RESULT — 1 sentence]
• [CTA — 1 sentence]
• That is 5 sentences and often the entire primary text that matters.

For Google Search RSA use this structure:

• Headline 1: [Main keyword or offer — 30 characters]
• Headline 2: [Specific result or differentiator — 30 characters]
• Headline 3: [CTA — 30 characters]
• Description 1: [Problem and solution — 90 characters]
• Description 2: [Credibility and specific detail — 90 characters]
• The rest of this course builds on this structure. Every Claude prompt in the Meta and Google lessons references it.

Your Action Right Now

Write one hook in each of the three formats: question, statement, and outcome for your primary offer. Do not polish them, just write them. You will refine them with Claude in the next lesson.

This forces you to think about what your audience is thinking and not just what you want to say.