Claude Code Marketing Skills: 8 vs ClaudeFast Growth Kit

A Claude Code marketing skill is a folder of instructions, scripts, and reference data Claude loads when running marketing workflows like CRO audits, copywriting, ad creation, or content production. The eight standalone marketing skill repos covered here together total 30,000+ GitHub stars, and each solves a slice of the marketing stack. ClaudeFast's Growth Kit ships the assembled stack: 64 skill files across 10 sub-categories with 70+ marketing psychology models and a complete CRO suite.

Quick verdict: Standalone marketing skill packs (coreyhaines31/marketingskills, ericosiu/ai-marketing-skills, ColdIQ-GTM, gooseworks) provide execution scripts but require you to bring strategy, frameworks, and integration logic. ClaudeFast Growth Kit ships 64 skill files (~40,000 lines) covering CRO, SEO, copywriting, email lifecycle, paid ads, pricing, growth loops, and product validation as one integrated system.

Why Marketing Skills Are Different from Engineering Skills

Engineering skills wrap workflows (TDD, refactor, plan). Marketing skills wrap domains (CRO, paid ads, copywriting). The good ones include three layers:

1. Real frameworks (PAS, AIDA, PASTOR, awareness levels, hook-finder) instead of generic prompts
2. Reference data (templates, swipe files, benchmarks) loaded as resources
3. CLI tools for repeatable execution (audit a page, score copy, generate variants)

A skill missing all three is a folder-shaped prompt. The eight repos below all have at least two of the three. ClaudeFast's Growth Kit ships all three across every marketing sub-domain.

Quick Win: Install One Standalone Pack in 60 Seconds

If you want to test standalone before reading further:

git clone https://github.com/coreyhaines31/marketingskills.git ~/.claude/marketing
cd ~/.claude/marketing && npm install
echo "Read ~/.claude/marketing/CLAUDE.md before any marketing task" >> ~/.claude/CLAUDE.md

Corey Haines's pack is the most-starred non-engineering skills repo on GitHub (19,100 stars). It covers CRO, SEO, copywriting, analytics, and growth engineering. You'll still need email lifecycle, paid ads strategy, pricing, and product validation from elsewhere.

The 8 Best Standalone Marketing Skill Repos (Compared)

1. coreyhaines31/marketingskills (19.1k stars)

Full-stack marketing skills: 33 skills, 61 CLI tools spanning CRO, SEO, copywriting, analytics, and growth engineering. JavaScript. The most-starred non-engineering Claude skills repo.

Strongest pieces: The CRO audit workflow runs against a live URL and returns a scored hypothesis list ranked by ICE. The hook-finder and awareness-level matchers actually work for real positioning.

What you still need: Email automation, paid ads strategy, pricing frameworks, and the strategic layer (ICP definition, positioning, GTM sequencing).

2. ericosiu/ai-marketing-skills (1.5k stars)

Eric Siu's 11-category pack covering SEO, content strategy, paid ads, and analytics built on direct-response marketing principles. Python.

Strongest piece: The direct-response framework lineage. Eric Siu is a known practitioner, and the skills inherit his framework (offers, big idea, problem-aware vs solution-aware copy).

What you still need: CRO suite, email lifecycle automation, pricing strategy, growth loops.

3. zubair-trabzada/ai-marketing-claude (1.1k stars)

15 marketing skills with parallel sub-agents. Audit any website, generate copy, build email sequences, ad campaigns, content calendars, competitive intelligence, and client-ready PDF reports. Python.

Strongest piece: The PDF report output. Most skills produce markdown that lives in your terminal. This produces deliverables you can hand to a stakeholder unchanged.

What you still need: A coherent marketing methodology underneath the deliverables.

4. gooseworks-ai/goose-skills (611 stars)

GTM skills for Claude Code, Codex, and Cursor. Tightly scoped to go-to-market workflows: ICP definition, positioning, messaging, launch sequencing.

Strongest piece: Pre-launch strategic clarity workflows.

What you still need: Everything post-launch (CRO, retention, paid scale, lifecycle).

5. sachacoldiq/ColdIQ-s-GTM-Skills (67 stars)

ColdIQ's GTM skills: 137 sales triggers, 34 email templates, 11 GTM plays, and Clay enrichment workflows for outbound sales automation and lead qualification.

Strongest piece: Production-tested outbound templates. ColdIQ runs outbound for revenue.

What you still need: The inbound side (SEO, content, organic conversion, CRO).

6. claudekit/claudekit-marketing (126 stars)

Multi-agent marketing automation system orchestrating specialized AI agents for content creation, lead generation, email campaigns, and sales pipeline. Python.

Strongest piece: The multi-agent architecture for marketing teams running enough campaigns that single-agent execution becomes a bottleneck.

What you still need: Strategy frameworks and the underlying CRO/SEO playbooks.

7. irinabuht12-oss/email-campaigns-claude (145 stars)

Claude Code skill for building and sending modern marketing emails with Resend. Asset hosting, reusable design blocks (frost-glass cards, video blocks, CTA buttons), GIF optimization, full Resend send pipeline.

Strongest piece: The email design system. Most "email skills" produce HTML that looks like 2008. This ships components that match what you'd build manually in MJML.

What you still need: Email lifecycle strategy (welcome, activation, retention, win-back) and the broader marketing system.

8. zubair-trabzada/ai-marketing-claude (1.1k stars, newer version)

The newer version of the AI Marketing Suite adds parallel sub-agent invocation, useful for running competitive intelligence across 5 to 10 competitors simultaneously.

Best for: Multi-competitor research where serial execution would take an afternoon.

ClaudeFast Growth Kit: The Integrated Alternative

ClaudeFast's Growth Kit v2.0 ships 64 markdown skill files spanning approximately 40,000 lines across 10 sub-categories. It is not a slice of marketing. It is the marketing system.

Three differentiators matter for this comparison:

1. The CRO suite is built on the 7-Dimension Analysis framework. Eight files covering landing pages, forms, signup, onboarding, popups, and paywalls. None of the standalone packs ship a CRO suite this complete.

2. Marketing psychology is encoded as 70+ models. Cialdini's principles, Kahneman's biases, and the full conversion psychology lexicon are loaded as reference data, not buried in prompts. Skills cite the model they're applying, which makes output auditable.

3. The 19-email lifecycle matrix. Welcome, activation, retention, win-back, and reactivation flows mapped to triggers and copy patterns. Standalone email skills cover the send pipeline. ClaudeFast Growth Kit covers the strategy.

Side-by-Side: Standalone vs ClaudeFast Growth Kit

When Standalone Packs Win

Three honest scenarios:

1. You need exactly one marketing job done. If you only run outbound, ColdIQ-GTM-Skills (67 stars) covers it. If you only send marketing emails, irinabuht12's email pack covers that.
2. You're a marketer with a strong existing methodology. Layering Eric Siu's direct-response skills onto your own playbook works.
3. You're researching the ecosystem. Browsing coreyhaines31/marketingskills (19.1k) is high-leverage even if you don't install it.

When ClaudeFast Growth Kit Wins

Five scenarios where the math favors integration:

1. You're a non-developer founder running your own marketing. Wiring 5 standalone packs together is engineering work that defeats the point.
2. You need both strategy and execution. Standalone packs are execution-only. ClaudeFast Growth Kit ships the strategic frameworks (positioning, ICP, pricing) that determine what to execute.
3. You're running multiple marketing channels. SEO, CRO, paid, email, and referral cohere when they share a methodology. ClaudeFast Growth Kit's 64 files share one voice and reference each other.
4. You want auditable AI output. ClaudeFast Growth Kit skills cite the psychology model they apply. "This headline uses Loss Aversion (Kahneman, 1979)" is reviewable. "Generated headline" is not.
5. You sell a product, not consulting. Time spent assembling marketing tools is time not spent on the product.

What Most Solo Founders Actually Do

Common pattern from the founders we've worked with:

• Week 1: Install coreyhaines31/marketingskills + 2 email skills + 1 SEO skill
• Week 2: Realize the skills disagree on positioning and copy voice
• Week 3: Try to write a unifying CLAUDE.md and abandon
• Week 4: Skip marketing for two weeks because the tooling friction is too high
• Week 5: Buy ClaudeFast Growth Kit and ship a campaign in three days

This is not universal, but it is common enough to be a pattern. The integrated bundle exists because most solo founders are not also marketing systems engineers.

How to Pick

Marketer with a strong playbook? Standalone packs work. Layer them onto what you already know.

Engineer who wants to bolt marketing onto a product? Either path works. ClaudeFast Growth Kit gets you to "campaign shipped" faster; standalone packs let you assemble exactly what you want.

Non-technical founder running marketing solo? ClaudeFast Growth Kit. The integration cost of standalone packs is engineering work most non-developers can't shortcut.

Building both product and marketing? ClaudeFast Complete Kit bundles ClaudeFast Code Kit and ClaudeFast Growth Kit at a discount and gives you the engineering and marketing layers wired together.

What to Read Next

• Best Claude Code SEO skills for the SEO-specific layer
• Best Claude Code skills repos for the engineering and general layer
• Best MCP servers list for the integrations marketing skills depend on (Resend, Clay, Meta Ads, Google Ads)
• Backlink strategy guide for the manual work no skill can fully automate

The fastest test for any marketing skills choice: install it, run one campaign end to end, and ship it. Skills that survive that test stay. Skills that produce work you'd never publish go in the bin. The advantage of an integrated system is that the test happens once across all skills, not five times across five disconnected packs.