Wilder Seasons — Coloring Book Generator

Automated pipeline that researches a location, builds a 52-page coloring book plan, and generates all illustrations via Google Gemini Nano Banana 2.

Quick Start

1. Set your API key

export GEMINI_API_KEY="your-key-from-aistudio.google.com/apikey"

2. Install dependencies

npm install @google/genai
pip install openpyxl

3. Tell Claude Code what to do

Create a Wilder Seasons coloring book for Colorado

Claude Code will:

• Research Colorado's landmarks, wildlife, flora, and seasonal patterns
• Build a 52-page content plan balanced across all regions
• Generate the prompts spreadsheet (.xlsx)
• Send all 52 prompts to Nano Banana 2
• Save images in the folder structure below

Folder Structure

wilder-seasons-coloring-books/
└── colorado/
    ├── prompts/
    │   ├── Colorado_ColoringBook_Prompts.xlsx
    │   └── Colorado_ColoringBook_Prompts.json
    ├── images/
    │   ├── winter/   (pages 01-13)
    │   ├── spring/   (pages 14-26)
    │   ├── summer/   (pages 27-39)
    │   └── fall/     (pages 40-52)
    ├── rejects/      (failed generations + their prompts)
    ├── final/        (approved images, numbered 01-52)
    ├── generation_results.json
    └── verification_report.json

Manual Commands

Export prompts from Excel to JSON

python scripts/export_prompts.py prompts/MyBook_Prompts.xlsx prompts/prompts.json

Generate all images

node scripts/generate_images.js prompts/prompts.json images/

Generate specific page range

node scripts/generate_images.js prompts/prompts.json images/ --start 14 --end 26

Retry failed pages

node scripts/generate_images.js prompts/prompts.json images/ --retry-failed

Verify all images

python scripts/verify_images.py images/

Cost Estimate

Item	Cost
52 images @ Nano Banana 2 (1K)	~$2.35
Retries (est. 5-10 images)	~$0.50
Total per book	~$3.00

Free tier: ~500 images/day via Google AI Studio — enough for an entire book with iterations.

Book Specifications

Spec	Value
Pages	52 interior + 4-page cover
Size	8.5" × 11"
Interior	B&W line art, 60-70 lb uncoated
Cover	Full color, soft-touch matte
Binding	Saddle-stitch (lay-flat)
Age range	0-5 years
Retail	$12.99 (D2C) / $14.99 (suggested)