By peter_lzh marketingskills: A Set of God-Tier Marketing Skills That Turn Your AI Into a Full Marketing Team
Yesterday I stumbled on a repo on GitHub: coreyhaines31/marketingskills, with 40.3K stars.
I thought it was yet another code framework, but clicking in I found it’s all Markdown files – 46 marketing Skills built for coding agents like Claude Code and Codex. Copywriting, landing-page review, SEO audits, email sequences, A/B test design – basically every marketing task you can think of is covered.
Having run a tech account for years, I’ve seen too many developers with good products die because they couldn’t sell. This project fills exactly that gap, and is worth a write-up.
What Kind of Project Is This
The author, Corey Haines, comes from the marketing world – founder of Conversion Factory and writer of a marketing newsletter called Swipe Files. He is not a programmer; what he did was distill the experience he accumulated doing B2B SaaS marketing for years into a set of playbooks, formatted so an agent can use them directly.
A Skill is, plainly put, a Markdown file – one file per marketing task, containing the methodology and concrete operating steps. Once installed into a project, when the agent notices we’re doing marketing-related work, it pulls out the corresponding framework and uses it. The license is MIT, so take it and modify freely.
What’s rare is it isn’t tied to any tool – Claude Code, OpenAI Codex, Cursor, and Windsurf can all install it, as long as the agent supports the Agent Skills spec.
Feature Details
All Skills First Read One Shared Product Profile
This design is the foundation of the whole repo, and I think it’s also what sets it apart from ordinary “AI marketing prompt collections.”
There’s a Skill called product-marketing with the most special status. The first time we use it, it walks us step by step through clarifying product positioning, target users, competitor situation, brand voice, and customer cases, then saves it as a context file.
After that, no matter which Skill we call – writing copy or reviewing a landing page – it reads this profile first before acting. The day the product positioning changes, edit this one file and every other Skill’s output changes with it.
Without this step, AI-written marketing content is the kind of generic platitude that works for any product if you just swap the name. With this profile, the output actually fits our own product.
Conversion-Rate Optimization Is Split Very Finely
Most AI marketing tools, when asked, just say “help me optimize this page.” This project splits conversion into five Skills, each with its own review framework – a completely different level of granularity.
Copywriting Has a Complete Pipeline
SEO Even Covers AI Search
Advertising, Testing, and Data Analysis
Growth and Strategy – Misc but Practical
On the sales side there’s also revops and sales-enablement – the former manages lead tiering, assignment, and pipeline; the latter manages sales scripts, one-pagers, and objection-handling docs. Useful for anyone doing B2B.
Quick Start
Installation has no real barrier – it’s a one-line command.
Full install:
Install only the ones you want:
It auto-installs into the .agents/skills/ directory and also symlinks a copy to .claude/skills/ for Claude Code compatibility.
You can also install via Claude Code’s plugin mechanism:
After installation, just state your needs in natural language and the agent picks the Skill itself:
Or name one directly with a slash command, like /cro or /seo-audit.
My suggested onboarding order: first run product-marketing once to build the product profile, then run cro to review your own homepage. After just that round, you’ll feel the gap versus asking bare AI.
One more reminder: v2.0 renamed 17 Skills, merging page-cro and form-cro into cro. If you installed an older version, after upgrading remember to clear out the old directory, otherwise the old and new sets coexist and the agent gets confused.
My Take
Why this repo blew up, I think, is pretty plain. It invented nothing new – it just honestly solidified the framework in a senior marketer’s head into a format an agent can read. But too few people do this: marketing methodology is everywhere online, yet organizing it into a form an agent can directly digest and that skills can call each other – this is the first.
But don’t oversell it either. The role of these Skills is advisor, not doer. They can teach the agent how to think about a problem and produce plans and copy, but the one who clicks the button, launches the ad, and sets the price is still us. For true end-to-end automation you’d need to wire up an MCP tool chain on top.
One realistic caveat must be stated clearly: the whole thing grew up in an English-marketing context. The framework itself is universal, but many specific tactics are overseas-SaaS playbooks – cold email, Product Hunt launches – and bringing them into domestic business means adapting them yourself. You can use it as a skeleton and fill in your own industry experience. Even just as a skeleton, this repo is enough – after all, it’s free.