Best Claude Skills for Marketers (Not a Dev Roundup)

Search "best Claude skills" and nearly everything that comes back is written for developers. Coding agents, git workflow packages, a skill that interviews you about your architecture before it writes a line of code, a ranking of PDF extractors from someone who tried a hundred of them. All useful if you write software for a living.

If you run marketing for a small team, most of that is noise. This list is built around the work you do every week: content, positioning, reporting and the occasional client deck.

Build one yourself first: Skill Creator

Before you install anyone else's skill, know that Anthropic ships its own tool for building custom ones. Skill Creator asks you to describe a task you already do by hand, runs you through a few questions, and writes the SKILL.md file for you.

It goes first on a "best skills" list for a simple reason. Almost every marketing team has one recurring task (a weekly recap, a brief format, a brand voice check) that no public library will match, because it's built around how your team works. Build that one before you go shopping.

It also gives you something to measure everything else against. Once you've seen a skill built around your own workflow, it's much easier to tell whether a stranger's skill fits or just sounds like it does in the description.

The best pre-built library: Corey Haines' marketing skills

If you want breadth instead, Corey Haines' marketing skills repository is the one I'd start with. It's free and MIT-licensed, and it has over 50,000 GitHub stars, which is a lot of people vouching for a folder of markdown files.

What sets it apart from a typical "awesome list" is the organization. Its 50 skills are grouped into nine categories by job instead of dumped in alphabetical order:

Conversion optimization: page and form CRO, signup and onboarding flows, popups and paywalls.
Content and copy: copywriting, copy editing, cold email, automated email flows, social content and image generation.
SEO and discovery: SEO audits, AI search optimization, programmatic SEO, site architecture, comparison and alternative pages, and schema markup.
Paid and distribution: ad campaigns across Google, Meta and LinkedIn, bulk ad creative, events and social scheduling.
Measurement and testing: event tracking setup and A/B test design.
Retention: churn prevention on its own (cancel flows, save offers, failed payments) instead of folded into a vague "growth" bucket.
Growth engineering: co-marketing partnerships, free tools as marketing, and referral programs.
Strategy and monetization: marketing ideas, marketing psychology, launch planning and pricing.
Sales and revenue operations: lead scoring and routing, plus sales enablement material like decks and objection docs.

You can install the whole set with one command:

npx skills add coreyhaines31/marketingskills

The skills share one product marketing file that holds your product, audience and positioning, and every other skill reads it first. So the copywriting skill and the CRO skill give advice that fits your business and each other. A churn prevention skill and a retention email draw on the same picture of your product instead of contradicting each other. That's what separates it from a folder of unrelated prompts.

You don't need all 50 turned on at once. A small team running content and paid social gets more from installing the content and paid categories first, then adding SEO or revops once those two are part of the weekly routine. Install everything on day one and most of it just sits there.

The built-in skills marketers skip over

Claude's own skills for PDF, Word, PowerPoint and Excel files rarely show up on "best skills" lists. The people writing those lists test for coding work, so they never need them.

Marketers do. A client report that has to land as a real .docx with your formatting intact. A deck that has to be a .pptx you can present, not chat text pasted into slides afterward. A tracker that has to open cleanly in Excel, with formulas someone else can check. These skills come with Claude, and they solve a problem that comes up every week for anyone doing client or stakeholder work.

They also matter most at the moments a marketing role gets judged: the monthly report a client opens, the deck a founder presents to the board, the budget tracker finance pulls numbers from. Coding reviews skip them because a developer's deliverable is usually code, not a file someone outside the team opens cold.

One more category: writing and brand voice

The last one I'd add is a writing or brand voice skill. If Claude's default output doesn't sound like you, prompting harder every time gets old fast. Build a voice skill once, from a short interview and a handful of your writing samples, and let it load on its own.

Think of it as a narrower, more personal version of what Corey Haines' library does. The library teaches Claude a marketing discipline. A voice skill teaches it how you sound inside that discipline.

The two work well together. A copywriting skill from a library knows how to structure a cold email or a landing page section. A voice skill knows you never put exclamation points in subject lines and always lead with a number when you have one. Run both and the structure comes from the library while the sound comes from you, so drafts stop needing a manual pass to sound less generic.

How to pick a starting set

With this many options, the useful question is which four or five earn a spot in your weekly workflow. Here's where I'd start for a small marketing team:

Skill Creator, for the one task that's specific to how your team works and won't be in anyone's library.
The one or two categories from Corey Haines' repo that match where your hours go each week. Content and copy for most teams, paid and distribution if you run heavy ad spend.
The built-in Office file skills, since they're already there and they solve a problem the moment a deliverable leaves the chat window.
A voice skill, once you've noticed yourself fixing Claude's default tone more than once or twice.

Add anything past that only when a specific recurring task calls for it, not because a directory listed it.

A worked example: one week with three skills installed

Here's roughly what a small team's first week looks like with Skill Creator, the content and copy category from Corey Haines' repo, and the built-in Office skills installed.

Monday starts with the weekly content brief. Instead of retyping the usual structure (audience, angle, three headline options, a call to action), the team runs it through the skill they built with Skill Creator the week before, modeled on their own brief format. It takes the same three inputs as always and returns the brief in the shape stakeholders already expect.

Midweek, a round of ad copy variations comes from the paid and distribution skills if that category is installed, or from the copywriting skill's general structure if it isn't yet. Either way, the copy lines up with the same positioning file the CRO and email skills read. The landing page headline and the ad sending traffic to it don't contradict each other.

By Friday the client report has to go out as a Word document with the agency's letterhead and formatting, not a block of chat text someone reformats by hand. That's the built-in docx skill doing the unglamorous part: a file that opens correctly in Word with the structure intact.

None of these three moments feels like the point of "installing Claude skills" on its own. Across a normal week, together, they're what turns skills from a novelty into something the team relies on.

Where to look if none of this fits

These categories cover most of what a small marketing team needs. If you've got a task none of them touch, search the Claude skills marketplace next, both the official browser and the community directories, before you build something from scratch.

FAQ

Do I need Claude Code to use these skills?

No. Skill Creator and the bundled file skills work in the Claude web and desktop apps through Settings → Capabilities. Corey Haines' repository is built with Claude Code and other coding agents in mind, so that one is easiest to install from the command line.

What's the single best Claude skill for marketing?

There isn't one. Marketing covers copywriting, SEO, paid ads and analytics, and each needs different instructions. Corey Haines' repository is the strongest starting point because it's organized by job instead of picking one lane.

Are these skills free?

Yes, every skill named here is free. Corey Haines' repository is MIT-licensed, and Anthropic's own skills (Skill Creator and the PDF and Office file skills) come with Claude wherever Skills are turned on.

How many skills should I install?

Fewer than you think. Start with Skill Creator plus the one or two categories from Corey Haines' library that match your weekly tasks. A skill you never trigger is dead weight, not a safety net.

Do the skills in Corey Haines' repository work together, or are they independent?

They're built to work together. They share one product marketing file, and several point to each other, so advice from the copywriting skill and the CRO skill should agree instead of pulling in different directions.

Install the paid and distribution category first instead of defaulting to content and copy. That's the point of the category split: pick the one or two that match where your hours go, not whichever shows up first in the list.

Should I build a voice skill before or after installing a general copywriting skill?

After, in most cases. Use the general copywriting skill for a week and notice where its default tone drifts from yours. That gives the voice skill interview something concrete to correct, instead of a blank guess at what "sounds like you" means.

Is Corey Haines' repository maintained, or a one-time release?

It's maintained. It was last updated in September 2026, and that activity is part of why it has the star count it does. A repo this size with no recent activity would be a warning sign. Check the commit history and issue activity before trusting any list, this one included.