N8N Script Generator: AI-Powered YouTube Video Scripts

Create professional video scripts in minutes. This workflow uses AI to generate complete scripts with hooks, structure, and b-roll suggestions, then saves them to Google Docs.

What This Workflow Does

• Webhook Input: Receives topic, duration, and style
• Outline Generation: AI creates a structured outline
• Full Script: Expands outline into complete script
• Google Docs Export: Creates and shares the document
• Response: Returns the document URL

Script Components Generated

• Hook: Attention-grabbing first 30 seconds
• Introduction: Topic overview and channel mention
• Main Content: Structured sections with transitions
• B-Roll Notes: Visual suggestions for each section
• Call to Action: Subscribe/like/comment prompts
• Outro: Channel branding and next video teaser

Prerequisites

• N8N instance
• OpenAI API key
• Google Docs API connected

Step-by-Step Setup

Step 1: Create Webhook

• Add "Webhook" node
• Path: /generate-script
• Method: POST
• Expected body:

json
{
  "topic": "10 AI Tools for YouTubers",
  "duration": "10",
  "style": "educational"
}

Step 2: Generate Outline

• Add "OpenAI" node
• Prompt:

Create a YouTube video script outline for:
Topic: {{ $json.body.topic }}
Target Length: {{ $json.body.duration }} minutes
Style: {{ $json.body.style }}

Include:
Hook (first 30 seconds)
5-7 main points with timestamps
Suggested B-roll for each section
Call to action placement

Step 3: Expand to Full Script

• Add another "OpenAI" node
• Prompt:

Expand this outline into a full YouTube script with natural speech patterns.
Include [B-ROLL: description] notes where visuals should change.
Make it conversational and engaging.

Outline:
{{ $json.choices[0].message.content }}

• Set max_tokens to 4000

Step 4: Create Google Doc

• Add "Google Docs" node
• Operation: Create
• Title: Script - {{ $json.body.topic }} - {{ DateTime.now().toFormat('yyyy-MM-dd') }}
• Content: The generated script

Step 5: Return Response

• Add "Respond to Webhook" node
• Return:

json
{
  "script": "{{ $json.choices[0].message.content }}",
  "documentUrl": "{{ $json.documentUrl }}",
  "success": true
}

Sample Output

[HOOK - 0:00]

"What if I told you that you could double your YouTube productivity using just five AI tools? Today, I'm revealing the exact tools I use..."

>

[B-ROLL: Quick montage of AI interfaces]

>

[INTRO - 0:30]

"Hey everyone, welcome back to the channel..."

Pro Tips

• Customize for Your Voice: Edit the output to match your speaking style
• Add Personal Stories: Insert your own experiences
• Timing Markers: Use the timestamps while filming
• B-Roll Library: Build a library based on suggestions

Download the Workflow

Get this workflow from our N8N Workflows page.