marketingskills MCP — ユースケース, インストール & ライブデモ

なぜ使うのか

主な機能

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

ライブデモ

実際の動作

準備完了

インストール

クライアントを選択

~/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
    }
  }
}

Claude Desktop → Settings → Developer → Edit Config を開く。保存後、アプリを再起動。

~/.cursor/mcp.json · .cursor/mcp.json

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

Cursor は Claude Desktop と同じ mcpServers スキーマを使用。プロジェクト設定はグローバルより優先。

VS Code → Cline → MCP Servers → Edit

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

Cline サイドバーの MCP Servers アイコンをクリックし、"Edit Configuration" を選択。

~/.codeium/windsurf/mcp_config.json

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

Claude Desktop と同じ形式。Windsurf を再起動して反映。

~/.continue/config.json

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

Continue はマップではなくサーバーオブジェクトの配列を使用。

~/.config/zed/settings.json

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

context_servers に追加。保存時に Zed がホットリロード。

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

ワンライナー。claude mcp list で確認、claude mcp remove で削除。

ユースケース

実用的な使い方： marketingskills

Run a proper CRO experiment cycle on a landing page

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

使うタイミング： Your landing page converts at 2%, and you want to A/B test your way to 4%.

前提条件

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

フロー

Hypothesis

Use marketingskills/cro. Analyze /landing/index.html. Propose 3 high-impact experiment hypotheses with expected lift.✓ コピーしました

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

For hypothesis 1, design the variant. Sample size? Runtime? Kill criteria?✓ コピーしました

→ Complete experiment spec with stats
Readout

Experiment ran 14 days, B beat A by 18% on signup. Interpret — is this real? What's next?✓ コピーしました

→ Sober readout with statistical and business reasoning

結果： An experiment shipped with discipline, not vibes.

注意点

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

組み合わせ： filesystem

Refresh landing-page copy in your brand voice

👤 Founders between copywriter hires ⏱ ~30 min beginner

使うタイミング： Copy feels generic, you know your voice, you don't have time to write it all.

前提条件

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

フロー

Pin voice

Use marketingskills/copy. Here are 3 voice samples: <samples>. Profile my voice.✓ コピーしました

→ Voice profile: vocabulary, rhythm, attitude
Rewrite

Rewrite /landing/index.html headline, subheadline, and CTAs in my voice. Three variations each.✓ コピーしました

→ Variants that sound like the samples
Pressure test

Which variant survives the "would I actually say this out loud" test? Defend.✓ コピーしました

→ One winner picked with reasoning

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

注意点

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

組み合わせ： humanizer-skill

組み合わせ

他のMCPと組み合わせて10倍の力を

marketingskills-skill + humanizer-skill

Rewrite then humanize to strip AI tells

Copy-rewrite, then run humanizer.✓ コピーしました

marketingskills-skill + geo-seo-claude-skill

SEO and GEO together

SEO gaps from marketingskills, GEO fixes from geo-seo-claude.✓ コピーしました

ツール

このMCPが提供する機能

ツール	入力	呼び出すタイミング
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

コストと制限

運用コスト

APIクォータ: N/A
呼び出しあたりのトークン: Varies — copy is cheap, full SEO audits expensive
金額: Free (MIT)
ヒント: Use copy_rewrite in small batches — headline-at-a-time

セキュリティ

権限、シークレット、影響範囲

最小スコープ： filesystem-read

認証情報の保管： None

データ送信先： None

トラブルシューティング

よくあるエラーと対処法

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

代替案

marketingskills 他との比較

代替案	代わりに使う場面	トレードオフ
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

その他

リソース

📖 GitHub の公式 README を読む

🐙 オープンな issue を見る

🔍 400以上のMCPサーバーとSkillsを見る