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YouTube Automation

N8N Auto Comment Responder: AI-Powered YouTube Comment Replies

Automatically respond to YouTube comments with AI-generated friendly replies. This N8N workflow keeps your community engaged 24/7.

YouTubeNiches Team
March 11, 2026
6 min
N8N Auto Comment Responder: AI-Powered YouTube Comment Replies

N8N Auto Comment Responder: AI-Powered YouTube Comment Replies

Engage with your audience automatically. This workflow monitors your videos for new comments and responds with AI-generated, personalized replies.

What This Workflow Does

  • Hourly Monitoring: Checks for new comments every hour
  • Smart Filtering: Ignores your own comments
  • AI Responses: Generates contextual, friendly replies
  • Auto-Post: Replies automatically on your behalf

Why Auto-Respond?

  • 24/7 Engagement: Respond even while you sleep
  • Faster Response Time: Viewers love quick replies
  • Boost Algorithm: More comments = more reach
  • Community Building: Make viewers feel valued

Prerequisites

  • N8N instance
  • YouTube API credentials with comment access
  • OpenAI API key

Step-by-Step Setup

Step 1: Configure YouTube Trigger

  • Add "YouTube" node (trigger mode)
  • Set to poll for comment threads
  • Filter by your video ID
  • Poll every hour

Step 2: Filter Out Own Comments

  • Add "Filter" node
  • Condition:

- {{ $json.snippet.topLevelComment.snippet.authorDisplayName }}

- NOT EQUAL

- "YOUR_CHANNEL_NAME"

Step 3: Generate AI Reply

  • Add "OpenAI" node
  • Prompt:

Generate a friendly, helpful reply to this YouTube comment.

Keep it short (1-2 sentences).

Be authentic and engaging.

Don't be overly promotional.

Comment: {{ $json.snippet.topLevelComment.snippet.textDisplay }}

  • Set max_tokens to 100

Step 4: Post Reply

  • Add "YouTube" node
  • Resource: Comment
  • Operation: Reply
  • Parent ID: {{ $json.id }}
  • Text: {{ $json.choices[0].message.content }}

Safety Features

  • Rate Limiting: Don't reply more than 20 times per hour
  • Sentiment Check: Skip negative/toxic comments
  • Duplicate Prevention: Don't reply twice to same comment

Sample Interactions

Comment: "Great video! Very helpful for beginners."

AI Reply: "Thank you so much! I'm glad it helped. Let me know if you have any questions! 😄"

Comment: "Can you make a video about X topic?"

AI Reply: "Great suggestion! I'll definitely consider it for an upcoming video. Thanks for watching! 🙏"

Download the Workflow

Get this workflow from our N8N Workflows page.

Tags

n8ncommentsengagementaicommunity

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