Nano Banana - Gemini Native Image Generation Skill

Nano Banana - Gemini Native Image Generation

Generate images with Google Gemini native image models via inference.sh CLI.

Nano Banana

Quick Start

Requires inference.sh CLI (infsh). Get installation instructions: npx skills add inference-sh/skills@agent-tools

infsh login

infsh 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

infsh app list --search "gemini image"

Examples

Basic Text-to-Image

infsh app run google/gemini-3-pro-image-preview --input '{
  "prompt": "A futuristic cityscape at sunset with flying cars"
}'

Multiple Images

infsh app run google/gemini-2-5-flash-image --input '{
  "prompt": "Minimalist logo design for a coffee shop",
  "num_images": 4
}'

Custom Aspect Ratio

infsh 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)

infsh 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)

infsh app run google/gemini-3-pro-image-preview --input '{
  "prompt": "Detailed illustration of a medieval castle",
  "resolution": "4K"
}'

With Google Search Grounding

infsh 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
infsh app sample google/gemini-3-pro-image-preview --save input.json

# 2. Edit the prompt
# 3. Run
infsh app run google/gemini-3-pro-image-preview --input input.json

Related Skills

# Full platform skill (all 150+ apps)
npx skills add inference-sh/skills@agent-tools

# 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: infsh app list --category image

Documentation

Running Apps - How to run apps via CLI
Streaming Results - Real-time progress updates
File Handling - Working with images

Agent Skills: Nano Banana - Gemini Native Image Generation

Install this agent skill to your local

Skill Files