YouTube 動画を自動のにブログ記事に変換し、Gemini AI による文字起こしを統合

• •HTTP Webhookエンドポイント（n8nが自動生成）
• •Google Gemini API Key

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        "content": "## Preparing the Blog Post\nThe AI Agent processes the full YouTube video transcript and transforms it into a blog post with content, a short description, a category, and tags. The output is provided as a structured JSON."
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