startup-skill 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

Idea validation framework (demand, willingness to pay, technical feasibility)
JTBD-style interview prompts and analysis
Competitive scans with source-backed claims
Business model sketches (pricing, acquisition, unit economics)
Lightweight planning — 30/60/90, OKR drafts
Adversarial red-team prompts (why this fails)

ライブデモ

実際の動作

startup-skill.replay ▶ 準備完了

0/0

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": {
    "startup-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/ferdinandobons/startup-skill",
        "~/.claude/skills/startup-skill"
      ],
      "_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": {
    "startup-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/ferdinandobons/startup-skill",
        "~/.claude/skills/startup-skill"
      ],
      "_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": {
    "startup-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/ferdinandobons/startup-skill",
        "~/.claude/skills/startup-skill"
      ],
      "_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": {
    "startup-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/ferdinandobons/startup-skill",
        "~/.claude/skills/startup-skill"
      ],
      "_inferred": true
    }
  }
}

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

~/.continue/config.json

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

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

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

claude mcp add startup-skill -- git clone https://github.com/ferdinandobons/startup-skill ~/.claude/skills/startup-skill

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： startup-skill

How to pressure-test a startup idea before you build

👤 First-time founders and side-project builders ⏱ ~60 min beginner

使うタイミング： You have an idea that excites you and you want to hear the case against it before committing a quarter.

前提条件

Skill installed — git clone https://github.com/ferdinandobons/startup-skill ~/.claude/skills/startup-skill

フロー

Frame the idea

Validate this idea using startup-skill: 'AI-powered observability for Rails apps, targeting 5-20 dev teams.'✓ コピーしました

→ Structured breakdown: customer, problem, willingness-to-pay, existing alternatives
Adversarial review

Now play devil's advocate — give me 5 reasons this fails in 18 months.✓ コピーしました

→ Specific, falsifiable failure modes (not generic)
Draft 5 validation interviews

Write 5 customer interview questions to disconfirm my riskiest assumption.✓ コピーしました

→ Non-leading, behavior-probing questions

結果： A go/no-go decision backed by specific risks and a kill-criteria list.

注意点

Claude defaults to cheerleading — Explicit framing: 'act as a skeptical senior VC who has seen this category fail twice'
Interview questions leak the answer — Ask for Mom Test-style questions only

組み合わせ： goose-skill

Run a competitive scan with sourced claims

👤 Founders preparing a pitch or positioning doc ⏱ ~40 min intermediate

使うタイミング： You need to know who's in your category and where the gaps are.

フロー

Scope the category

Use startup-skill competitive scan for 'error monitoring for Rails apps'. Require URLs for every feature claim.✓ コピーしました

→ Vendor table with linked source per feature
Identify the whitespace

What positioning claim is unowned in this table?✓ コピーしました

→ Specific angle backed by the table

結果： A positioning angle you can defend in an investor meeting.

注意点

Hallucinated features or pricing — Reject any claim without a URL; re-check URLs are real by asking Claude to fetch them

組み合わせ： goose-skill

Draft a 30/60/90-day plan for a new role or initiative

👤 Founders and early employees needing a plan, fast ⏱ ~25 min beginner

使うタイミング： New role, new team, or new product direction.

フロー

Seed with context

30/60/90 for a founding PM joining a 10-person dev tools startup. Primary goal: ship the self-serve signup.✓ コピーしました

→ Milestones per phase with ownership and dependencies
Pressure-test

What's over-scoped? What's the one thing that if we skip ruins the plan?✓ コピーしました

→ Specific cuts + the single critical path item

結果： A realistic plan with a stated critical path and cut candidates.

組み合わせ

他のMCPと組み合わせて10倍の力を

startup-skill + goose-skill

Startup validates the bet, Goose executes GTM

Validate the idea with startup-skill; if it passes, generate ICP and outbound with goose-skills.✓ コピーしました

startup-skill + ai-marketing-claude-code-skill

Startup sets positioning, marketing skill drives campaigns

Run positioning workshop with startup-skill, then feed to ai-marketing skill for campaign planning.✓ 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
Idea validation	-	Pre-commit to a direction
JTBD interviews	-	Customer research
Competitive scan	-	Positioning and pitch prep
Business model sketch	-	Before setting prices
30/60/90 & OKRs	-	Starting something new

コストと制限

運用コスト

APIクォータ: None
呼び出しあたりのトークン: 10-30k for a full validation pass
金額: Free
ヒント: Batch questions into one session per topic to reuse context.

セキュリティ

権限、シークレット、影響範囲

認証情報の保管： No credentials

データ送信先： Competitive scan uses Claude's web search; no persistent egress

Confidential ideas shared with Claude are subject to Anthropic's data policy — consider a workspace with no-training setting.

トラブルシューティング

よくあるエラーと対処法

Validation output feels like a pep talk

Explicitly ask for the adversarial mode and require failure modes before strengths

Competitive scan invents features

Require URLs for every claim; reject unsourced ones

代替案

startup-skill 他との比較

代替案	代わりに使う場面	トレードオフ
goose-skill	You're past validation and need GTM execution	Less idea-stage depth

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