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coreyhaines31/marketingskills

Your AI Agent's New CMO Is a Collection of Markdown Files

It packages marketing playbooks into markdown skills that turn AI coding agents into growth collaborators for founders and technical marketers.

41.2k stars JavaScript Coding AssistantsAgents
Feature · 17 Jul 2026
47 Markdown Files and the Race to Stop AI Marketing Slop

Corey Haines’s marketingskills repo turns decades of marketing expertise into structured agent context, betting that domain-specific knowledge will separate useful AI agents from automated slop.

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marketingskills
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What it does

This repo is a library of dozens of markdown skills that teach AI agents specialized marketing workflows. Each file covers a discipline—like CRO, cold email, programmatic SEO, or churn prevention—and includes frameworks, best practices, and cross-references to related skills. Drop them into Claude Code, Cursor, or any Agent Skills-compatible tool, and the agent recognizes the task and switches into the appropriate marketing mode.

The interesting bit

The skills aren’t isolated prompts; they’re a dependency graph. Every skill starts by reading the product-marketing foundation to understand your positioning, then cross-references siblings—so copywriting talks to CRO, and SEO audits feed schema markup. It’s basically a context architecture pretending to be a repo.

Key highlights

  • Covers the full funnel: acquisition (SEO, ads, cold email), activation (onboarding, signup), retention (churn prevention, referrals), and revenue (pricing, revops, paywalls).
  • Skills reference each other; the product-marketing skill is the root node that all others consume first.
  • Works with Claude Code, OpenAI Codex, Cursor, Windsurf, and anything else implementing the Agent Skills spec.
  • Includes emerging disciplines like AI-SEO (optimizing for LLM citations) and programmatic SEO.
  • 35,993 stars and open for contributions.

Caveats

  • The README is upfront that this is a collection of markdown knowledge, not executable code—your agent still does the actual work.
  • Quality depends on how well your specific AI agent implements the Agent Skills spec; results may vary across Claude, Cursor, and Codex.
  • Some skill descriptions in the README are truncated, so you’ll need to open individual folders to see the full prompt content.

Verdict

Grab this if you’re a founder or technical marketer who wants AI agents to handle growth work with consistent, cross-referenced context. Skip it if you’re looking for a marketing automation tool that runs independently—this is a brain transplant, not a robot.

Frequently asked

What is coreyhaines31/marketingskills?
It packages marketing playbooks into markdown skills that turn AI coding agents into growth collaborators for founders and technical marketers.
Is marketingskills open source?
Yes — coreyhaines31/marketingskills is open source, released under the MIT license.
What language is marketingskills written in?
coreyhaines31/marketingskills is primarily written in JavaScript.
How popular is marketingskills?
coreyhaines31/marketingskills has 41.2k stars on GitHub and is currently cooling off.
Where can I find marketingskills?
coreyhaines31/marketingskills is on GitHub at https://github.com/coreyhaines31/marketingskills.

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