If you have ever asked Claude for marketing help and got a pile of generic advice, marketing skills for Claude Code are built to fix that. Corey Haines published a free pack of 53 skills that teach Claude how to handle jobs like page conversion reviews, headlines, cold email, SEO audits and pricing.
We loaded the pack in a throwaway project, checked what is inside, and ran three of the skills on a made-up product. Below you will see what each group of skills does, what the real output looked like, and where the pack falls short.
This guide is part of our Claude Code tutorials. Find more add-ons in our skills directory.
Tested with Claude Code v2.1.318 on November 7, 2026, using marketing-skills v2.14.2 from coreyhaines31/marketingskills at commit 96798cf (committed November 6, 2026).
Takeaway: the pack is a library of marketing checklists and prompts that Claude reads on demand, so it works best when you hand it real facts about your product.
Quick Summary
| Item | What we found |
|---|---|
| Maker | Corey Haines (community project, MIT license) |
| Repository | coreyhaines31/marketingskills |
| Install commands | /plugin marketplace add coreyhaines31/marketingskills then /plugin install marketing-skills@marketingskills |
| What you get | 53 skills in one plugin, listed in /skills as marketing-skills:name |
| Needs an account | No, the skills are plain text files |
| What we ran | cro, copywriting and cold-email on a sample landing page |
| Verdict | Useful for founders and small teams that do their own marketing, with a few caveats below |
What Are Corey Haines’ Marketing Skills for Claude Code?
A skill is a folder with a SKILL.md file that tells Claude how to do one kind of task. Claude Code reads a short description of every skill, and loads the full text only when your request matches. If skills are new to you, our plugin marketplace guide explains how packs like this are shared.
This pack bundles 53 of them under one plugin named marketing-skills. The plugin file lists the version as 2.14.2 and points at a skills folder. We found no hook files in the plugin, so there is nothing that runs on its own when you load it.
The repository also has a tools folder with command-line helpers for outside services, plus some validation scripts for the maintainers. We did not run any of those, and the plugin does not load them.
The shared context file
The README says one skill, product-marketing, is the foundation. It builds a short document about your product, audience and positioning, and the other skills are told to read that document first.
The skill text we read says Claude should look for .agents/product-marketing.md or .claude/product-marketing.md. We wrote a small file at .claude/product-marketing.md for our demo and we will come back to how well that worked.
How We Tested the Marketing Skills Safely
You can try the pack without installing anything into your own setup. We cloned the repository into a throwaway folder, read the plugin file and skill list first, then started Claude Code with the --plugin-dir flag pointing at the repo.
We also added --setting-sources project, so only the project folder’s settings applied. Our own Claude Code setup stayed unchanged.
claude --plugin-dir ./marketingskills --setting-sources projectThe demo project had two files: a deliberately weak landing page for a made-up app called TaskTide, and the context file with the product facts. Every number in them, such as the beta user count, is a sample figure.
Plugin skills show as “locked by plugin” because you manage them through /plugin, not by editing the list. Each skill also shows a rough token size, around 150 to 350 tokens, which is what Claude carries for its description until a skill is used.
What Each Group of Marketing Skills Does
Fifty-three names is a lot to scan, so we sorted them by the job they do. The groups are our own, based on each skill’s description in the repository.
| Group | Skills | Use it when |
|---|---|---|
| Page conversion | cro, signup, onboarding, popups, paywalls, ab-testing | A page or flow is not turning visitors into users |
| Writing | copywriting, copy-editing, emails, social, content-strategy | You need words for a page, an email sequence or a post |
| Search and discovery | seo-audit, ai-seo, programmatic-seo, schema, site-architecture, link-building, aso | You want to rank in Google, get cited by AI tools or fix site structure |
| Outbound and sales | cold-email, prospecting, sales-enablement, revops | You sell to businesses and need outreach or sales material |
| Paid and creative | ads, ad-creative, image, video | You are planning campaigns or making ad assets |
| Strategy and positioning | marketing-plan, product-marketing, pricing, offers, launch, competitors, competitor-profiling, marketing-psychology | You are deciding what to say, charge or launch |
| Growth and retention | churn-prevention, referrals, community-marketing, influencer-marketing, co-marketing, lead-magnets, free-tools | You want users to stay, share or bring partners |
| Measurement | analytics, attribution, conversion-tracking, customer-research | You need to know what works and why |
| Other | marketing-ideas, marketing-council, marketing-loops, directory-submissions, events, public-relations, reverse-engineer-marketing | You want ideas, a panel of advisors, press, events or directory listings |
How Claude picks one
You rarely need to name a skill. Each description lists phrases that trigger it, such as “this page isn’t converting” for cro or “nobody’s replying” for cold-email. You can also call one directly with a slash command like /marketing-skills:cro.
Running the cro Skill on a Weak Landing Page
Our first test was the conversion skill. We pointed it at the TaskTide page, which has a vague headline, a button that just says “Submit”, no proof and a dead-end “Contact us” line.
We typed /marketing-skills:cro and asked for the top four fixes, one line each. Claude read the file and answered in about seven seconds.
The four fixes were sensible. It flagged that “Welcome to TaskTide” says nothing about a benefit, that “Submit” is a weak button label, that the page has no social proof, and that “Contact us for more information” adds friction near the price.
One thing to watch
The proof fix suggested wording like “Join 5,000+ professionals”. That number is an example, not a fact about our product, and our context file said 1,200 beta users. If you use output like this, replace every sample figure with a real one before it goes live.
Running the copywriting Skill for Headlines and Buttons
Next we called /marketing-skills:copywriting and asked for three headline options and three button texts, with no file edits. This is a good habit with any writing skill: ask for options first, then choose.
The headlines used only features that were on the page, such as calendar sync and the daily plan view. The button list came with a reason for each choice and a clear recommendation at the end.
The skill also marked two gaps in square brackets: it wanted a differentiator, and it wanted us to confirm that a free trial exists. Both facts were in our context file. So in our run we cannot say the file was read, and you should not count on it.
Running the cold-email Skill
The third test was /marketing-skills:cold-email. We asked for one short email to a freelance designer, under 90 words, with no file edits.
The draft stuck to facts from the landing page and invented no results, names or trial offer. It left placeholders for the sender name and postal address, and added an opt-out line.
The notes after the email were the most useful part. Claude said the email was generic, asked for a real first line about the designer, asked for one real customer result, and listed deliverability rules to follow before sending: use a secondary domain, verify the address, and turn off open tracking.
Tips for Getting Better Results
Our three runs point to a few habits that make the pack work harder for you.
- Put real facts in the prompt, such as the audience, price and one proof point, instead of relying on the context file alone.
- Ask for options or a review first and say “do not edit any file” until you like the direction.
- Name the skill with a slash command when you know which one you want, so Claude does not guess.
- Treat every number and testimonial in the output as a placeholder until you have checked it.
What We Did Not Test
We ran three of the 53 skills, one run each. We did not test seo-audit, pricing, marketing-plan, the ad and video skills, or anything in the tools folder. One run does not show how the pack behaves on a long project.
We also did not use the marketplace install route, because we loaded the pack from a folder to keep our own setup clean. The README also lists other install options, such as an npx skills command, which we did not try.
Who Should Install the Marketing Skills?
| You are | Our take |
|---|---|
| A founder or solo marketer | Worth trying. The skills give Claude a structure and ask the right questions |
| A developer shipping a product page | Good for cro, copywriting and seo-audit reviews before launch |
| A marketing team with its own brand voice | Use it as a starting point, then add your own rules, since the skills are generic by design |
| Someone who wants one-click finished campaigns | Not this. The output is advice and drafts that you must check and edit |
For general chat-based help, see our Claude AI page. If you like writing add-ons, you may also like our tests of the internal comms skill and modern web guidance.
Common Mistakes
- Publishing sample numbers. Claude may suggest figures like “5,000+ users” as examples, so swap in real ones.
- Installing 53 skills when you need three. Descriptions cost a little context each, so pick a smaller set if you can.
- Skipping the review step. Ask for options first, then let Claude edit files.
- Sending cold email straight from the draft. The skill’s own notes say to fix personalization and sending setup first.
Marketing Skills Cheat Sheet
Official docs: read how plugins work and how to discover plugins.
Frequently Asked Questions
What are marketing skills for Claude Code?
They are text files that teach Claude how to handle marketing tasks such as conversion reviews, copywriting, SEO audits and cold email. This pack from Corey Haines has 53 of them.
Is Corey Haines’ marketing skills pack free?
The repository lists an MIT license and we needed no account or key to load it. We ran only the skills, not the outside-service tools in the repo.
How do I install it?
The README gives /plugin marketplace add coreyhaines31/marketingskills and then /plugin install marketing-skills@marketingskills. We used --plugin-dir for the test instead.
Does it work in other tools?
The repository mentions other agents, including Codex. We only tested Claude Code.
Does it write the whole marketing plan for me?
There is a marketing-plan skill, but we did not run it. What we saw from the other skills is advice and drafts that need your facts and your review.
Conclusion
Corey Haines’ marketing skills are a well-organized library, and in our three runs the output was specific, short and honest about gaps. The conversion review caught real problems on a weak page, the copywriting skill gave options with reasons, and the cold email skill refused to invent proof. It did not clearly use our context file, and one suggestion contained a sample number that you must never publish as fact. We tested three of 53 skills on a made-up product, so treat this as a first look. If you do your own marketing, load the pack from a folder, try one skill on a real page, and check every claim before it goes live.
Browse all our Claude Code tutorials for more tested add-ons.
