Generate Japanese Twitter posts with GPT-4, quality control, and Notion

Go to Workflow
1 views
Built by yuta tokumitsu yuta tokumitsu
Created on June 11, 2026

Description

AI-Powered Japanese Social Media Content Generator with Quality Control

🎯 Who's it for

Marketing teams and social media managers in Japan who want to automate content creation while maintaining high quality standards and cultural appropriateness. Perfect for businesses that need consistent Japanese-language social media presence with built-in compliance checks.

📝 What it does

This workflow creates an intelligent content generation system that:

Generates culturally-aware Japanese Twitter posts using GPT-4
Automatically scores content quality across 5 dimensions (engagement, SEO, brand voice, readability, CTA)
Performs sentiment analysis and risk detection for controversial topics
Routes content intelligently: auto-posts high-quality/low-risk content, flags medium-risk content for approval, and rejects high-risk content
Includes an auto-improvement loop that refines content up to 3 times if quality scores are below 70
Provides weekly performance analytics and recommendations

🔧 How it works

Daily Content Generation Flow:
Schedule trigger runs weekday mornings at 9 AM
Fetches Japanese cultural context (seasons, holidays, business events)
Analyzes brand voice from past 30 days of posts
Generates 3 Twitter post variations with GPT-4
Each post is scored on quality metrics (100-point scale)
Low-scoring content enters auto-improvement loop
Risk analysis checks for controversy, cultural sensitivity, and sentiment
Decision routing: auto-approve and post OR send for manual approval OR reject

Approval Workflow:
Pending posts trigger approval emails
Webhook receives approval/rejection/edit actions
Approved posts are published to Twitter and archived in Notion

Weekly Analytics:
Monday morning trigger analyzes past week's performance
GPT-4 generates insights report with best practices
Email sent to team with recommendations

⚙️ Requirements

APIs & Credentials:
OpenAI API (GPT-4 access)
Twitter API v2 with OAuth 2.0
Notion API (database for content storage)
Email sending service (SMTP or SendGrid)

Setup:
Create a Notion database with columns: Content, Hashtags, Quality Score, Risk Level, Status, Engagement
Configure OpenAI API credentials with HTTP Header Auth
Set up Twitter OAuth 2.0 credentials
Configure email service for approval notifications

🎨 How to customize

Adjust Quality Thresholds:
Modify the quality scoring criteria in "AI Quality Scoring" node
Change auto-approval threshold (currently 70+ points)

Content Generation:
Edit GPT-4 prompts in "Generate Content with GPT-4" node to match your brand tone
Adjust temperature settings for more/less creative content
Modify the number of posts generated per run

Risk Detection:
Customize risk factors in "Sentiment & Risk Analysis" node
Add industry-specific compliance checks

Brand Voice Learning:
Adjust the lookback period in "Get Past 30 Days Posts" (currently 30 days)
Modify brand voice analysis logic in "Analyze Brand Voice" node

Scheduling:
Change cron expressions for daily content generation and weekly reports
Add additional triggers for special campaigns

⚠️ Important Notes

This workflow uses Japanese language prompts - modify system prompts if using for other languages
Ensure compliance with Twitter's API rate limits and automation policies
Review auto-posted content regularly to validate AI quality assessments
The workflow stores all generated content in Notion for audit trails

Nodes Used (4)

Code
n8n-nodes-base.code
HTTP Request
n8n-nodes-base.httpRequest
Notion
n8n-nodes-base.notion
Send Email
n8n-nodes-base.emailSend