Builder Methods Brand Illustrator

Generate on-brand hand-drawn line art illustrations with warm off-white backgrounds, confident black ink lines, and a single accent color.

Quick Start

# Install dependencies
pip install google-genai

# Set your API key
export GEMINI_API_KEY="your-key-here"

# Generate an illustration
python3 scripts/generate.py \
  --prompt "A worn leather notebook with handwritten wireframe sketches" \
  --color coral \
  --type scene \
  --output my-illustration.png

Image Types

Type	Description	Default Size
icon	Single object, isolated, quick punctuation	512×512
scene	2–4 objects with suggested environment, hero/header moments	1200×630
periphery	1–3 objects for corner/edge decorations	500×500

Accent Colors

• coral — #ff6b6b
• teal — #2ec4b6
• indigo — #5b5fdd
• amber — #f4b400

Documentation

• SKILL.md — Complete skill instructions and workflow
• references/style.md — Visual style guide
• references/colors.md — Color system (single source of truth)
• references/idea-mapping.md — Connection types and object categories
• references/visual-world.md — The "day in the life of a builder" concept
• references/prompts.md — Prompt templates and proven patterns

Environment Variables

• GEMINI_API_KEY — Google Gemini API key (also accepts GOOGLE_API_KEY or GENAI_API_KEY)
• GEMINI_IMAGE_MODEL — Optional override (default: gemini-2.0-flash-image)

Get an API key from: https://ai.google.dev/