THE LITTLE SKILL DEPOT
Best marketing skills for Claude Code and Cursor in 2026
Marketing skills are the odd ones in a coding agent: they never touch code, and they work in a plain chat just as well as in Claude Code or Cursor. What they add is a framework a marketer would apply by hand, written so the agent applies it every time. We read the 333 skills in the marketing tag and kept eight. Figures are from the 2026-09-03 crawl.
Our picks
#1
- copywriting
coreyhaines31/marketingskills
When the user wants to write, rewrite, or improve marketing copy for any page, including homepage, landing pages, pricing pages, feature pages, about pages, or product pages. Also use when the user says "write copy for," "improve this copy," "rewrite this page," "marketing copy," "headline help," "CTA copy," "value proposition," "tagline," "hero section copy," "this copy is weak," "this sounds like AI," "AI slop," "make it sound human," or "help me describe my product." Drafts never use AI tells like "it's not X, it's Y" reveals, "no X, no Y, no Z" lists, or sentences that trail into extra comma clauses. For email copy, see emails. For popup copy, see popups. For editing existing copy, see copy-editing. For the offer underneath the copy (bonuses, guarantees, value framing), see offers. Claims must be supportable, and a declined claim names the evidence that would unlock it. Diagnoses the input first (blank brief, real voice, or point edit) and changes only what it calls for.
Why: About 192K installs. Page-by-page copy structure for landing, pricing and feature pages; the one to start with.
#2
- seo-audit
coreyhaines31/marketingskills
When the user wants to audit, review, or diagnose SEO issues on their site. Also use when the user mentions "SEO audit," "technical SEO," "why am I not ranking," "SEO issues," "on-page SEO," "meta tags review," "SEO health check," "my traffic dropped," "lost rankings," "not showing up in Google," "site isn't ranking," "Google update hit me," "page speed," "core web vitals," "crawl errors," "indexing issues," "stuck on page 2," "striking distance keywords," "title tag rewrite," "low CTR," "local SEO," "Google Business Profile," or "map pack." Use this even if the user just says something vague like "my SEO is bad" or "help with SEO" — start with an audit. For building pages at scale to target keywords, see programmatic-seo. For adding structured data, see schema. For AI search optimization, see ai-seo.
Why: About 200K installs. A technical and content SEO diagnosis with a prioritised fix list.
#3
- marketing-psychology
coreyhaines31/marketingskills
When the user wants to apply psychological principles, mental models, or behavioral science to marketing. Also use when the user mentions 'psychology,' 'mental models,' 'cognitive bias,' 'persuasion,' 'behavioral science,' 'why people buy,' 'decision-making,' 'consumer behavior,' 'anchoring,' 'social proof,' 'scarcity,' 'loss aversion,' 'framing,' or 'nudge.' Use this whenever someone wants to understand or leverage how people think and make decisions in a marketing context. For applying psychology to specific pages, see cro; for pricing tactics, see pricing; for copy framing, see copywriting.
Why: About 138K installs. Names the principle behind a headline so you can judge whether it is honest.
#4
- content-strategy
coreyhaines31/marketingskills
When the user wants to plan a content strategy, decide what content to create, or figure out what topics to cover. Also use when the user mentions "content strategy," "what should I write about," "content ideas," "blog strategy," "topic clusters," "content planning," "editorial calendar," "content marketing," "content roadmap," "what content should I create," "blog topics," "content pillars," or "I don't know what to write." Use this whenever someone needs help deciding what content to produce, not just writing it. For writing individual pieces, see copywriting. For SEO-specific audits, see seo-audit. For social media content specifically, see social.
Why: About 134K installs. Decides what to publish and why, before anyone writes a word.
#5
- copy-editing
coreyhaines31/marketingskills
When the user wants to edit, review, or improve existing marketing copy, or refresh outdated content. Also use when the user mentions 'edit this copy,' 'review my copy,' 'copy feedback,' 'proofread,' 'polish this,' 'make this better,' 'copy sweep,' 'tighten this up,' 'this reads awkwardly,' 'clean up this text,' 'too wordy,' 'sharpen the messaging,' 'refresh this content,' 'update this page,' 'this content is outdated,' or 'content audit,' 'this sounds like AI,' 'AI slop,' 'de-slop this,' or 'make it sound human.' Use this when the user already has copy and wants it improved or refreshed rather than rewritten from scratch. Every edit removes AI tells such as 'it's not X, it's Y' reveals, 'no X, no Y, no Z' lists, and sentences that trail into extra comma clauses. A request to fix one line gets a point edit that changes only that line. For writing new copy, see copywriting.
Why: About 120K installs. Edits copy that exists; the pair to copywriting.
#6
- ad-creative
coreyhaines31/marketingskills
When the user wants to generate, iterate, or scale ad creative — headlines, descriptions, primary text, or full ad variations — for any paid advertising platform. Also use when the user mentions 'ad copy variations,' 'ad creative,' 'generate headlines,' 'RSA headlines,' 'bulk ad copy,' 'creative testing,' 'write me some ads,' 'Facebook ad copy,' 'Google ad headlines,' 'LinkedIn ad text,' 'static ads,' 'ad templates,' 'iMessage ad,' 'ChatGPT ad,' 'creative strategy,' 'creative roadmap,' 'creative retro,' 'hook writing,' 'creative review page,' 'motion video ad,' 'faceless video ad,' 'UGC ad,' 'greenscreen ad,' 'TikTok/Reels ad format,' 'Meta ad format tier list,' or 'creative format taxonomy.' Use it to produce or iterate ad copy at scale. Copy avoids AI tells like 'it's not X, it's Y' reveals. For campaign strategy and targeting, see ads. For landing page copy, see copywriting. Test hypotheses must be falsifiable, naming the metric, the comparison, and the expected direction.
Why: About 106K installs. Headline and body variants for paid platforms, built to be tested in batches.
#7
- ai-seo
coreyhaines31/marketingskills
When the user wants to optimize content for AI search engines, get cited by LLMs, or appear in AI-generated answers. Also use when the user mentions 'AI SEO,' 'AEO,' 'GEO,' 'LLMO,' 'answer engine optimization,' 'generative engine optimization,' 'LLM optimization,' 'AI Overviews,' 'optimize for ChatGPT,' 'optimize for Perplexity,' 'AI citations,' 'AI visibility,' 'zero-click search,' 'how do I show up in AI answers,' 'LLM mentions,' 'optimize for Claude/Gemini,' 'llms.txt,' 'llms-full.txt,' 'OKF,' 'Open Knowledge Format,' 'knowledge bundle,' 'agent-readable site,' 'agent readiness,' 'is my site agent-ready,' 'WebMCP,' 'do listicles still work for AI,' 'ChatGPT stopped citing comparison pages,' 'how do LLMs see our brand,' 'LinkedIn for AEO,' or 'AI citation format shift.' Use this whenever someone wants their content to be cited or surfaced by AI assistants and AI search engines. For traditional technical and on-page SEO audits, see seo-audit. For structured data implementation, see schema.
Why: About 119K installs. Getting cited by AI answer engines; new ground, treat as a hypothesis.
#8
- cold-email
coreyhaines31/marketingskills
Write and run B2B cold outbound that gets replies, from cold emails and follow-ups to sending setup, LinkedIn, multichannel cadences, and reply handling. Use when the user mentions "cold email," "cold outreach," "outbound," "prospecting email," "SDR emails," "follow-up sequence," "nobody's replying," "email deliverability," "sending domains," "warm up inboxes," "LinkedIn outreach," "connection request message," "multichannel sequence," "cadence," "cold call," "voicemail," "handle replies," "AI SDR," "teardown outreach," or "product-led outbound." Send from secondary domains, verify lists first, turn off open tracking, and stop every channel when a prospect replies. Copy avoids AI tells like 'it's not X, it's Y' reveals. For building the list and account research, see prospecting. For lifecycle email, see emails. For call scripts and sales collateral, see sales-enablement.
Why: About 103K installs. B2B outreach sequences that read like a person wrote them.
A little help from the depot
How we chose, and the one-author problem
All eight picks come from the same repository, coreyhaines31/marketingskills, which holds 50 skills, has about 46.8K stars and was pushed on 2026-09-03. We tried to avoid that and could not: the other marketing skills in the index are either image generators mis-tagged as marketing, one-paragraph prompts, or unmaintained. The concentration is a real caveat. If the author stops maintaining the repository, this whole list ages at once.
Within the repository we ranked by install count, then read each file for whether it asks for product facts before writing (the good ones do) and whether its advice would survive a Google spam update.
npx skills add coreyhaines31/marketingskills1. copywriting
What it does: writes or rewrites the copy for a specific page type (homepage, landing, pricing, feature, about) using a structure per page: the promise, the proof, the objection, the ask. It insists on knowing the audience and the product before producing anything. About 192K installs, 4 files, 8.4 KB.
When to use it: any page whose job is to convince. The catch: it writes with American SaaS conventions; for a Korean or European audience you will want to tell it which idioms to drop.
npx skills add coreyhaines31/marketingskills@copywriting -g -y2. seo-audit
What it does: a structured audit of a site: crawlability, indexing, titles and descriptions, internal links, content thinness, Core Web Vitals, then a fix list ordered by impact. About 200K installs, 4 files, 16.6 KB.
When to use it: before you spend on ads or content, because it finds the cheap problems first. The catch: it cannot fetch your site by itself. Give it the pages, or pair it with a crawling MCP, or it will audit what it imagines.
npx skills add coreyhaines31/marketingskills@seo-audit -g -y3. marketing-psychology
What it does: a catalogue of persuasion principles (loss aversion, social proof, anchoring, commitment) with when each applies and how it fails. The agent uses it to explain why a piece of copy works or to choose a principle for a new one. About 138K installs, 2 files, 21.9 KB.
When to use it: reviewing copy, or when a headline feels manipulative and you want to know why. The catch: 21.9 KB is a long read, and a catalogue of levers is only as ethical as the person pulling them. Use it to diagnose more than to generate.
npx skills add coreyhaines31/marketingskills@marketing-psychology -y4. content-strategy
What it does: turns a product and an audience into a content plan: topic clusters, formats, cadence and what each piece is supposed to achieve. About 134K installs, 4 files, 18.7 KB.
When to use it: when you are about to write your first blog post and do not know why. The catch: it plans; it does not know your search volumes. Feed it keyword data or its clusters will be guesses.
npx skills add coreyhaines31/marketingskills@content-strategy -y5. copy-editing and 6. ad-creative
copy-editing takes existing copy and tightens it: cuts hedges, fixes the order of claims, refreshes dated references. About 120K installs, 5 files, 15 KB. Use it on pages that already convert a little. The catch: it edits toward one voice, so give it your style notes first or every page starts to sound the same.
ad-creative produces headline, description and primary-text variants for Google, Meta and LinkedIn in batches meant for testing, with character limits respected. About 106K installs, 13 files, 23 KB. Use it when you have a working ad and need twenty siblings. The catch: 13 files and the largest SKILL.md on this page; platform limits change, so check the numbers against the current ad editor.
npx skills add coreyhaines31/marketingskills@ad-creative -y7. ai-seo and 8. cold-email
ai-seo is about being cited by AI answer engines: clear entity definitions, quotable statements, structured data, pages that answer one question completely. About 119K installs, 9 files, 28.2 KB. Use it if a meaningful share of your traffic now arrives through AI answers. The catch: nobody has reliable data on what these engines reward yet; the skill is a well-argued hypothesis, not a measured playbook.
cold-email writes B2B outreach and follow-up sequences: one idea per email, a specific reason for writing to this person, a low-effort ask. About 103K installs, 7 files, 7.4 KB. Use it for a founder-led sales push. The catch: it does not research the recipient; pair it with a research skill or the emails will be well-structured and generic.
npx skills add coreyhaines31/marketingskills@cold-email -yWhat we excluded and why
programmatic-seo (about 127K installs) is competent, but it teaches template pages at scale, and Google's August 2026 spam update targeted exactly that; we will not recommend a skill whose default output is a penalty risk. marketing-ideas (about 123K) is a list of tactics with no method for choosing one. brandkit, image-to-code and imagegen-frontend-web from taste-skill top the tag by installs but generate brand images and design references; they are design tools mis-tagged as marketing. site-architecture is good and overlaps seo-audit; take it if you are restructuring navigation.
Give them real inputs
Every skill here is a framework, and a framework fed with invented product facts produces confident, invented copy. Before running copywriting or cold-email, paste in three things: what the product does in one paragraph, who buys it and why they hesitated, and the exact words customers use in reviews or support tickets. A customer research skill can collect the third.
Frequently asked questions
Do I need Claude Code to use these?
No. They are instruction files. Claude Code, Cursor and Codex load them automatically; in a chat app you can paste the SKILL.md as context.
Should I install the whole repository?
You can: npx skills add coreyhaines31/marketingskills lets you pick from all 50. Installing all of them costs nothing until one triggers, but overlapping descriptions can make the agent pick the wrong one, so choose the eight above and add others as needed.
Is the copy good enough to publish?
It is a strong first draft with a sound structure. Read it for claims you cannot prove and idioms your audience does not use before it goes live.
Do these skills work for Korean marketing?
The frameworks transfer; the examples and idioms are American. Tell the agent the market and language, and give it Korean customer quotes, or the copy will read translated.
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