AI image generation skill for Claude Code where Claude acts as Creative Director using Google's Gemini Nano Banana models.
Unlike simple API wrappers, Claude interprets your intent, selects domain expertise, constructs optimized prompts using Google's official 5-component formula, and orchestrates Gemini for the best possible results.
# Start Claude Code
claude
# Generate an image
/banana generate "a hero image for a coffee shop website"
# Edit an existing image
/banana edit ~/photo.png "remove the background"
# Multi-turn creative session
/banana chat
# Browse 2,500+ prompt database
/banana inspire
Claude will ask about your brand, select the right domain mode (Cinema, Product, Portrait, Editorial, UI, Logo, Landscape, Infographic, Abstract), construct a detailed prompt with lighting and composition, set the right aspect ratio, and generate.
Intent Analysis -- Understands what you actually need (blog header? app icon? product shot?)
Domain Expertise -- Selects the right creative lens (Cinema, Product, Portrait, Editorial, UI, Logo, Landscape, Infographic, Abstract)
5-Component Prompt Formula -- Constructs prompts with Subject + Action + Location/Context + Composition + Style (includes lighting)
Prompt Adaptation -- Translates patterns from a 2,500+ curated prompt database to Gemini's natural language format
Post-Processing -- Crops, removes backgrounds, converts formats, resizes for platforms
Batch Variations -- Generates N variations rotating different components
Session Consistency -- Maintains character/style across multi-turn conversations
4K Resolution Output -- Up to 4096×4096 with imageSize control
14 Aspect Ratios -- Including ultra-wide 21:9 for cinematic compositions
The 5-Component Prompt Formula
Instead of sending "a cat in space" to Gemini, Claude constructs:
A medium shot of a tabby cat floating weightlessly inside the cupola module
of the International Space Station, paws outstretched toward a floating
droplet of water, Earth visible through the circular windows behind. Soft
directional light from the windows illuminates the cat's fur with a
blue-white rim light, while the interior has warm amber instrument panel
glow. Captured with a Canon EOS R5, 35mm f/2.0 lens, slight barrel
distortion emphasizing the curved module interior. In the style of a
National Geographic cover story on the ISS, with the sharp documentary
clarity of NASA mission photography.
| Mode | Best For | Example |
|------|----------|---------|
| Cinema | Dramatic, storytelling | "A noir detective scene in a rain-soaked alley" |
| Product | E-commerce, packshots | "Photograph my handmade candle for Etsy" |
| Portrait | People, characters | "A cyberpunk character portrait for my game" |
| Editorial | Fashion, lifestyle | "Vogue-style fashion shot for my brand" |
| UI/Web | Icons, illustrations | "A set of onboarding illustrations" |
| Logo | Branding, identity | "A minimalist logo for a tech startup" |
| Landscape | Backgrounds, wallpapers | "A misty mountain sunrise for my desktop" |
| Infographic | Data, diagrams | "Visualize our Q1 sales growth" |
| Abstract | Generative art, textures | "Voronoi tessellation in neon gradients" |
Models
| Model | ID | Notes |
|-------|----|-------|
| Flash 3.1 (default) | gemini-3.1-flash-image-preview | Fastest, newest, 14 aspect ratios, up to 4K |
| Flash 2.5 | gemini-2.5-flash-image | Stable fallback |
The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
Claude Code is an agentic coding tool that lives in your terminal, understands your codebase, and helps you code faster by executing routine tasks, explaining complex code, and handling git workflows - all through natural language commands.
