Stop Counting Characters: Meet the Paid Ad Copywriter Agent

If you’ve ever launched ads on more than one platform, you know the character limit dance by heart:

Write a headline → paste into Google Ads → “Headline exceeds 30 characters” → rewrite → paste again → still over → start cutting all the words that made it good.

And that’s just one field. A single Google responsive search ad can require 15 headlines and 4 descriptions, all with strict limits. Meta has hard limits and visible limits. LinkedIn formats add their own required fields and quirks.

This dance is why we built the Paid Ad Copywriter agent: a platform-aware ad copy generator that produces ready-to-paste, format-compliant copy for Google, Meta (Facebook/Instagram), and LinkedIn—with character counts validated for every field. Check it out:

What This Agent Does

The Paid Ad Copywriter agent turns a campaign brief into complete ad copy sets that match the exact requirements of the platform and format you select.

You:

1. Pick your platform (Google, Meta, LinkedIn)
2. Choose your format (RSA, Performance Max, Single Image, Carousel, Message Ads, etc.)
3. Describe what you’re selling, who it’s for, and why they should care
4. Choose a tone (Professional, Friendly, Urgent, or your own style)

It returns:

• Every required field for that format (not generic “ad copy”)
• Multiple variations for A/B testing
• Inline character counts so you can verify at a glance
• Copy that’s structured and labeled so it’s easy to paste directly into the ad platform

The goal isn’t just “AI that can write.” It’s AI that can write inside the boxes your ad platforms force you to use—without you doing the math.

How to Get Value Fast: A Simple Workflow That Works

Here’s the quickest way to make this agent pay for itself in the first session.

Step 1: Start with a tight brief.

Use this structure:

• Product/service: What it is + what it helps do
• Audience: Who it’s for (role, company type, pain point)
• Primary benefit: The #1 reason someone should click
• Proof/differentiator: What makes it credible or different
• CTA: What you want them to do

If you give the agent that, it can produce copy you’d actually run.

Step 2: Generate your “anchor” format first.

Pick the format you care about most (often Google RSA or Meta Feed). Get a strong set of variations and identify the top angles.

Common angles to look for:

• Benefit-first
• Social proof
• Urgency/limited time
• Problem/solution
• Curiosity/question
• Feature → outcome

Step 3: Reuse the same brief across platforms.

Now generate the same campaign for your other formats (e.g., Meta Carousel + LinkedIn Single Image). Because it’s the same core message, your cross-platform campaign stays consistent without you rewriting everything.

Step 4: Turn variations into testing inputs.

Don’t “pick one and ship.” Use the output to build a testing plan:

• 3–5 headlines per angle
• 2–3 description variants
• 2 different CTAs
• 1 “safe” control + 2 “challengers”

Tips to Make the Output Even Better

• Give it one clear “primary benefit.” If you list 10 benefits equally, you’ll get unfocused copy.
• Include 1–2 concrete specifics. Numbers, timeframes, outcomes, or constraints create sharper messaging (e.g., “Cut reporting time by 30%”).
• Name your differentiator. “Best-in-class” is noise; “No-code setup in 10 minutes” is a hook.
• Choose a tone intentionally. “Professional” vs. “Urgent” produces very different assets—match it to the campaign goal.
• Use the agent for iteration, not perfection. Generate, select winners, refine, regenerate. It’s faster than rewriting manually.

The Paid Ad Copywriter agent isn’t here to replace good marketing judgment. It’s here to eliminate the busywork that keeps you from using that judgment. If you’re done doing math in a headline field, try it: https://agent.ai/agent/paid-ad-copywriter.