Ai Product Writer (SEO Titles & Description) for Shopify, Google Merchant Center)

## Using This Workflow

This workflow analyzes product images and metadata to generate detailed Shopify and Google Merchant Center (GMC) optimized product descriptions and SEO-enhanced titles.

### How It Works:

1. **Trigger**  
   - Automatically trigger when user uploads product data in Sheet. 

2. **Google Sheets Input**  
   - Loads product data from **Product Description Writer → Sheet1**.

3. **Eligibility Filter (If1 Node)**  
   - Skips products without an `image link`.  
   - Only products **with images** proceed to analysis.

4. **Loop Over Items**  
   - Batches products for sequential processing to prevent rate limits and manage API load.

5. **Image Download**  
   - Downloads the product image using the URL from the `image link` column.

6. **Image Resize**  
   - Resizes the image to 40% for faster AI processing without significant quality loss.

7. **AI Image Analysis (OpenAI Vision Model)**  
   - Uses a specialized GPT-4o-mini agent with a **strict product vision prompt**.  
   - Generates a detailed, objective description of the product’s visual features, including:
     - Product type & function
     - Shape & structure
     - Materials & textures
     - Color scheme
     - Size/scale indicators
     - Surface details
     - Features & usability clues
     - Unique attributes

8. **Shopify Copywriting Agent**  
   - Takes the AI-generated visual description and user-provided metadata.  
   - Generates:
     - **SEO-enhanced Shopify product name**
     - **HTML-formatted Shopify product description**  
   - Optimized for readability, sensory language, and conversion.

9. **Google Merchant Copywriting Agent**  
   - Uses the same inputs to generate:
     - **Google Merchant SEO-optimized description** (≤700 characters, plain tone, no promotional hype).
     - **SEO-rich GMC product title**.

10. **Structured Output Parsing**  
    - Both AI agents’ outputs are parsed into a strict JSON structure before updating the sheet.

11. **Google Sheets Update**  
    - Writes the following fields to Google Sheets:
      - `google product category` (from the original data, if available)
      - `age group` (if available)
      - `color` (if available)
      - AI-generated:
        - `shopify_description`
        - `shopify_product_name`
        - `google_merchant_description`
        - `seo_product_name`

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