Marketing Skills

Marketing Skills, at marketing-skills.com, is a free, open-source library of marketing skills for AI coding agents, built by Corey Haines. Each skill is a folder with a SKILL.md file that says when to use it and how a specialist would do the job, plus reference docs.

The library has 53 skills. They cover SEO and AI search, page copy and editing, conversion work on pages, signup flows, onboarding, popups and paywalls, paid ads and ad creative, email sequences and cold email, analytics and conversion tracking, referrals, pricing, launches, directory submissions and more. The product-marketing skill creates a context file about your product, audience and positioning, and the other skills read it before they start.

It works with Claude Code, OpenAI Codex, Cursor, Windsurf and any agent that supports the Agent Skills spec. The recommended install is npx skills add coreyhaines31/marketingskills, which detects the agents on your machine. There are also Claude Code and Codex plugin installs, and each release attaches ZIPs for Claude on the web and Perplexity Computer. Once installed, you describe the work in plain words and the agent matches it to a skill, or you call one directly, such as /cro or /seo-audit.

The library is MIT-licensed and the source is at github.com. The README says disclosed Verified Partners fund the work and don't influence what the core skills recommend.

Pricing: Free and open source under the MIT license. Some skills call outside data sources that have their own costs. Checked November 12, 2026 at https://github.com/coreyhaines31/marketingskills.