About nano-banana
A CLI skill for generating and editing images with Google Gemini image models through inference.sh. It documents model options and inputs such as multiple source images, aspect ratios, resolution, and Google Search grounding.
Key features
- 01Text-to-image generation
- 02Editing with input images
- 03Multiple output images
- 04Aspect ratio and resolution settings
- 05Google Search grounding
Use cases
- 01Generate illustrations from prompts
- 02Edit an existing image
- 03Create images in several aspect ratios
- 04Ground image prompts in current information
Install
Copy the command and run it in a terminal.
npx skills add https:/After installing, type/nano-bananain Claude Code to confirm it loaded.
Details
From the project READMEInstall the belt CLI skill:
npx skills add belt-sh/cli
Nano Banana - Gemini Native Image Generation
Generate images with Google Gemini native image models via inference.sh CLI.
Quick Start
Requires inference.sh CLI (
belt). Install instructions
belt login
belt app run google/gemini-3-pro-image-preview --input '{"prompt": "a banana in space, photorealistic"}'
Models
| Model | App ID | Speed | Quality |
|---|---|---|---|
| Gemini 3 Pro Image | google/gemini-3-pro-image-preview | Slower | Best |
| Gemini 2.5 Flash Image | google/gemini-2-5-flash-image | Fast | Excellent |
Search Gemini Image Apps
belt app search "gemini image"
Examples
Basic Text-to-Image
belt app run google/gemini-3-pro-image-preview --input '{
"prompt": "A futuristic cityscape at sunset with flying cars"
}'
Multiple Images
belt app run google/gemini-2-5-flash-image --input '{
"prompt": "Minimalist logo design for a coffee shop",
"num_images": 4
}'
Custom Aspect Ratio
belt app run google/gemini-3-pro-image-preview --input '{
"prompt": "Panoramic mountain landscape with northern lights",
"aspect_ratio": "16:9"
}'
Image Editing (with input image)
belt app run google/gemini-2-5-flash-image --input '{
"prompt": "Add a rainbow in the sky",
"images": ["https://example.com/landscape.jpg"]
}'
High Resolution (4K)
belt app run google/gemini-3-pro-image-preview --input '{
"prompt": "Detailed illustration of a medieval castle",
"resolution": "4K"
}'
With Google Search Grounding
belt app run google/gemini-3-pro-image-preview --input '{
"prompt": "Current weather in Tokyo visualized as an artistic scene",
"enable_google_search": true
}'
Input Options
| Parameter | Type | Description |
|---|---|---|
prompt | string | Required. What to generate or change |
images | array | Input images for editing (up to 14) |
num_images | integer | Number of images to generate |
aspect_ratio | string | Output ratio: "1:1", "16:9", "9:16", "4:3", "3:4", "auto" |
resolution | string | "1K", "2K", "4K" (Gemini 3 Pro only) |
output_format | string | Output format for images |
enable_google_search | boolean | Enable real-time info grounding |
Prompt Tips
Styles: photorealistic, illustration, watercolor, oil painting, digital art, anime, 3D render
Composition: close-up, wide shot, aerial view, macro, portrait, landscape
Lighting: natural light, studio lighting, golden hour, dramatic shadows, neon
Details: add specific details about textures, colors, mood, atmosphere
Sample Workflow
# 1. Generate sample input to see all options
belt app sample google/gemini-3-pro-image-preview --save input.json
# 2. Edit the prompt
# 3. Run
belt app run google/gemini-3-pro-image-preview --input input.json
Related Skills
# Full platform skill (all apps)
npx skills add inference-sh/skills@infsh-cli
# All image generation models
npx skills add inference-sh/skills@ai-image-generation
# Video generation (for image-to-video)
npx skills add inference-sh/skills@ai-video-generation
Browse all image apps: belt app list --category image
Documentation
- Running Apps - How to run apps via CLI
- Streaming Results - Real-time progress updates
- File Handling - Working with images