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AI image generation using Google Gemini (Gemini) and OpenAI GPT-Image. Generate, edit, iterate, and create assets.
Install with Codex or Claude Copy this prompt, paste it into Codex, Claude, or another assistant, and let it review the skill page and install it for you.
Based on SOC occupation classification
| name | imagegen |
| description | AI image generation using Google Gemini (Gemini) and OpenAI GPT-Image. Generate, edit, iterate, and create assets. |
| triggers | ["generate an image","create an image","make an image","draw","create a picture","generate a picture","create artwork","generate art","make me an image","create icons","generate icons","create a logo","generate a logo","create a moodboard","generate moodboard","design inspiration","character design","character sheet","edit this image","modify this image","change this image","update this image","refine this image","iterate on this","compare image providers","generate social images","create thumbnails","make favicons","dall-e","dalle","imagen","gemini image","gpt image"] |
This skill enables AI-powered image generation, editing, and asset creation using Google Gemini (Gemini) and OpenAI GPT-Image.
Activate this skill when the user wants to:
| Command | Use For |
|---|---|
/imagegen:generate | Generate images from prompts |
/imagegen:edit | Edit existing images |
/imagegen:iterate | Refine images through multiple steps |
/imagegen:compare | Compare Google vs OpenAI |
/imagegen:assets | Generate project assets |
/imagegen:moodboard | Create design inspiration sets |
/imagegen:character | Create consistent character sheets |
/imagegen:config | Configure defaults |
For complex image generation tasks, delegate to the image-generator subagent which has access to all generation scripts and can handle multi-step workflows.
Google Gemini (Gemini)
gemini-2.5-flash-image, gemini-3-pro-image-previewGEMINI_API_KEY or GOOGLE_API_KEYOpenAI GPT-Image
gpt-image-2 (default), gpt-image-1.5, gpt-image-1 (the only one supporting transparent backgrounds), gpt-image-1-minigpt-image-1 when you need transparency.OPENAI_API_KEY| Format | OpenAI | |
|---|---|---|
| Square | 1:1 | 1024x1024 |
| Landscape | 16:9 | 1536x1024 |
| Portrait | 9:16 | 1024x1536 |
| Wide | 21:9 | - |
User: "Generate an image of a sunset over mountains"
Action: Use /imagegen:generate --prompt "A sunset over mountains"
User: "Create app icons for my project"
Action: Use /imagegen:assets --type icons --prompt "[ask for description]"
User: "Edit this image to add rain"
Action: Use /imagegen:edit --image [path] --prompt "Add rain falling"
User: "I want to iterate on this design"
Action: Use /imagegen:iterate --image [path] --prompt "[refinement]"
User: "Which provider would be better for logos?"
Action: Explain Google is better for style variety, OpenAI for text, and suggest /imagegen:compare to test both.
Before generating, verify:
google-genai, openai, Pillow (for resizing)# Install packages
pip install google-genai openai Pillow
# Set API keys (user's responsibility)
export GEMINI_API_KEY=your_key
export OPENAI_API_KEY=your_key
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