marketingskills MCP — Use Cases, Install & Live Demo

Why use it

Key features

Copywriting skill with voice preservation
CRO skill — hypothesis → experiment → readout
SEO skill — keyword research, content gaps, internal linking
Analytics skill — event naming, funnel definition, PostHog/GA wiring
Growth-engineering skill — acquisition channel audits

Live Demo

What it looks like in practice

ready

Install

Pick your client

~/Library/Application Support/Claude/claude_desktop_config.json · Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "marketingskills-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/coreyhaines31/marketingskills",
        "~/.claude/skills/marketingskills"
      ],
      "_inferred": true
    }
  }
}

Open Claude Desktop → Settings → Developer → Edit Config. Restart after saving.

~/.cursor/mcp.json · .cursor/mcp.json

{
  "mcpServers": {
    "marketingskills-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/coreyhaines31/marketingskills",
        "~/.claude/skills/marketingskills"
      ],
      "_inferred": true
    }
  }
}

Cursor uses the same mcpServers schema as Claude Desktop. Project config wins over global.

VS Code → Cline → MCP Servers → Edit

{
  "mcpServers": {
    "marketingskills-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/coreyhaines31/marketingskills",
        "~/.claude/skills/marketingskills"
      ],
      "_inferred": true
    }
  }
}

Click the MCP Servers icon in the Cline sidebar, then "Edit Configuration".

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "marketingskills-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/coreyhaines31/marketingskills",
        "~/.claude/skills/marketingskills"
      ],
      "_inferred": true
    }
  }
}

Same shape as Claude Desktop. Restart Windsurf to pick up changes.

~/.continue/config.json

{
  "mcpServers": [
    {
      "name": "marketingskills-skill",
      "command": "git",
      "args": [
        "clone",
        "https://github.com/coreyhaines31/marketingskills",
        "~/.claude/skills/marketingskills"
      ]
    }
  ]
}

Continue uses an array of server objects rather than a map.

~/.config/zed/settings.json

{
  "context_servers": {
    "marketingskills-skill": {
      "command": {
        "path": "git",
        "args": [
          "clone",
          "https://github.com/coreyhaines31/marketingskills",
          "~/.claude/skills/marketingskills"
        ]
      }
    }
  }
}

Add to context_servers. Zed hot-reloads on save.

claude mcp add marketingskills-skill -- git clone https://github.com/coreyhaines31/marketingskills ~/.claude/skills/marketingskills

One-liner. Verify with claude mcp list. Remove with claude mcp remove.

Use Cases

Real-world ways to use marketingskills

Run a proper CRO experiment cycle on a landing page

👤 Growth teams, founders optimizing funnels ⏱ ~60 min intermediate

When to use: Your landing page converts at 2%, and you want to A/B test your way to 4%.

Prerequisites

Skills installed — git clone https://github.com/coreyhaines31/marketingskills ~/.claude/skills/marketingskills
Current page source accessible — Either in repo or via URL

Flow

Hypothesis

Use marketingskills/cro. Analyze /landing/index.html. Propose 3 high-impact experiment hypotheses with expected lift.✓ Copied

→ Hypotheses reference specific page elements and behavioral data
Design A/B

For hypothesis 1, design the variant. Sample size? Runtime? Kill criteria?✓ Copied

→ Complete experiment spec with stats
Readout

Experiment ran 14 days, B beat A by 18% on signup. Interpret — is this real? What's next?✓ Copied

→ Sober readout with statistical and business reasoning

Outcome: An experiment shipped with discipline, not vibes.

Pitfalls

Peeking at data mid-experiment and calling early — Pre-commit to sample size; skill enforces this in prompts

Combine with: filesystem

Refresh landing-page copy in your brand voice

👤 Founders between copywriter hires ⏱ ~30 min beginner

When to use: Copy feels generic, you know your voice, you don't have time to write it all.

Prerequisites

Brand voice samples — 2–3 paragraphs you know sound right

Flow

Pin voice

Use marketingskills/copy. Here are 3 voice samples: <samples>. Profile my voice.✓ Copied

→ Voice profile: vocabulary, rhythm, attitude
Rewrite

Rewrite /landing/index.html headline, subheadline, and CTAs in my voice. Three variations each.✓ Copied

→ Variants that sound like the samples
Pressure test

Which variant survives the "would I actually say this out loud" test? Defend.✓ Copied

→ One winner picked with reasoning

Outcome: Copy that sounds like you wrote it on a good day.

Pitfalls

Voice drift when asking for length changes — Re-pin the voice samples before every round

Combine with: humanizer-skill

Combinations

Pair with other MCPs for X10 leverage

marketingskills-skill + humanizer-skill

Rewrite then humanize to strip AI tells

Copy-rewrite, then run humanizer.✓ Copied

marketingskills-skill + geo-seo-claude-skill

SEO and GEO together

SEO gaps from marketingskills, GEO fixes from geo-seo-claude.✓ Copied

Tools

What this MCP exposes

Tool	Inputs	When to call
cro_hypotheses	page, data?	Early-stage CRO
copy_rewrite	text, voice_samples	Copy work
seo_gaps	site, competitors	Content strategy
event_taxonomy	app_description	Analytics setup

Cost & Limits

What this costs to run

API quota: N/A
Tokens per call: Varies — copy is cheap, full SEO audits expensive
Monetary: Free (MIT)
Tip: Use copy_rewrite in small batches — headline-at-a-time

Security

Permissions, secrets, blast radius

Minimum scopes: filesystem-read

Credential storage: None

Data egress: None

Troubleshooting

Common errors and fixes

Generic hypothesis output

Provide behavioral data — heatmaps, session recordings, funnel numbers — or acknowledge you're hypothesizing blind

Copy still sounds AI

Run humanizer-skill as a second pass

Event taxonomy conflicts with existing events

Provide current schema; skill will propose additions, not a full rewrite

Alternatives

marketingskills vs others

Alternative	When to use it instead	Tradeoff
Hire a fractional CMO	Stakes are high and you want human judgment	Expensive; slower
Point-tool SaaS (Optimizely, VWO)	You want full experimentation platforms	Paid; less integrated with your code

More

Resources

📖 Read the official README on GitHub

🐙 Browse open issues

🔍 Browse all 400+ MCP servers and Skills