gemini-image-gen

Gemini Image Gen

Use this skill to generate images via Gemini's native image generation capability or Google's Imagen 4 model. Both produce high-quality raster images suitable for UI mockups, marketing assets, and visual prototyping.

When to use this skill

• UI mockups: Quickly visualize a screen layout, dashboard design, or component arrangement.
• Hero images: Generate a compelling banner or header image for a landing page or blog post.
• Product shots: Create lifestyle or conceptual product imagery.
• Infographic frames: Generate illustrative backgrounds or iconographic elements for data visualizations.
• Concept illustrations: Visualize an architectural metaphor, system diagram in artistic form, or abstract concept.
• Avatar and icon generation: Create custom icons, mascots, or profile images.

MCP tools

Tool	Purpose
gemini_generate_image	Gemini native image generation (Nano Banana model, fast, conversational quality)
gemini_generate_image_imagen	Imagen 4 (higher fidelity, better photorealism and typography, slightly slower)

Choosing between the two tools

Need	Tool
Quick prototyping, iterative concepts, low cost	gemini_generate_image
High-fidelity output, photorealistic, sharp text in image	gemini_generate_image_imagen

Usage pattern

Quick concept with native Gemini image generation

{
  "tool": "gemini_generate_image",
  "arguments": {
    "prompt": "A minimal dashboard UI showing a line chart, three KPI cards, and a sidebar navigation. Clean, modern, dark mode, flat design.",
    "aspect_ratio": "16:9"
  }
}

High-fidelity product shot with Imagen 4

{
  "tool": "gemini_generate_image_imagen",
  "arguments": {
    "prompt": "A sleek mobile app screenshot showing a fitness tracking screen with a circular progress ring, step count, and heart rate graph. iOS-style, white background, soft shadows.",
    "aspect_ratio": "9:16",
    "number_of_images": 2
  }
}