Let AI Handle Your Marketing — 38 Expert Skills for Ad Copy, SEO, and Conversion Optimization, All Free and Open Source

"Hey, boost the conversion rate on this landing page." What if you could give AI a request like that, and it responded like a seasoned marketing pro — analyzing systematically and delivering actionable improvements? That's exactly what MarketingSkills does, an open-source project that has earned 14,340 GitHub stars.

Giving Your Coding AI Real Marketing Expertise

MarketingSkills is a collection of marketing-specific skills you inject into AI coding assistants like Claude Code and Cursor. It was created by Corey Haines, founder of Conversion Factory, an agency specializing in CRO (Conversion Rate Optimization — the practice of turning website visitors into paying customers).

The core idea is simple. Ask AI to "fix my landing page" and you'll get a generic answer. But with marketing skills loaded, the AI draws on real frameworks and checklists used by marketing consultants to deliver structured, expert-level analysis.

The Full List of 38 Marketing Skills

A total of 38 specialized skills are organized into 10 categories, covering virtually every task a marketer handles day to day.

Product Context Is the Foundation for Every Skill

The core design principle behind MarketingSkills is the "product marketing context." You start by documenting your product's positioning, target customers, and market landscape. From that point on, the AI references this context first whenever you run any skill.

For example, whether you're using /copywriting to draft homepage copy or /seo-audit to run a search optimization diagnostic, the AI already understands who your product is for and what makes it stand out against competitors. Consistent brand messaging is maintained automatically.

Real-World Examples for Marketers

Once installed, just describe what you need in plain language.

• "Improve the conversion rate on this landing page" → The page-cro skill kicks in, systematically analyzing headlines, CTAs (call-to-action buttons), social proof, and more
• "Create a 5-email welcome sequence for new subscribers" → The email-sequence skill designs a complete onboarding flow
• "Run an SEO health check on my site" → The seo-audit skill evaluates both technical SEO and content SEO
• "Set up a Google Ads campaign for me" → The paid-ads skill recommends keywords, budget, and targeting strategy

Installation Takes One Line

The easiest way to install is a single CLI (command line) command.

# Full install (all 38 skills)
npx skills add coreyhaines31/marketingskills

# Install only the skills you need
npx skills add coreyhaines31/marketingskills --skill page-cro copywriting seo-audit

# Install as a Claude Code plugin
/plugin marketplace add coreyhaines31/marketingskills
/plugin install marketing-skills

Beyond Claude Code, it supports all major AI coding tools including Cursor, OpenAI Codex, and Windsurf.

Why This Is Especially Useful for Marketers, Solo Founders, and PMs

The reason this tool is getting so much attention is that it extends AI coding tools into non-development work.

Until now, tools like Claude Code and Cursor have been laser-focused on writing code. But in practice, building a real product involves marketing pages, ad copy, and SEO optimization — non-development tasks that account for more than half the work.

MarketingSkills fills that gap. For solo founders who build the product and handle marketing themselves, PMs who edit landing pages directly, and marketers who want data-driven decision-making, AI now serves as a professional marketing consultant.

If you don't know how to code but want AI to handle your marketing, this tool is a great starting point. And if you're a developer who writes great code but struggles with marketing, it's equally valuable. It's a clear sign that AI coding tools are rapidly expanding beyond code itself.

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