| 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"] |
Image Generation Skill
This skill enables AI-powered image generation, editing, and asset creation using Google Gemini (Gemini) and OpenAI GPT-Image.
When to Use
Activate this skill when the user wants to:
- Generate images from text descriptions
- Edit or modify existing images
- Create project assets (icons, favicons, social images)
- Generate design inspiration (moodboards)
- Create consistent character designs
- Compare different AI image providers
Available Commands
| 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 |
Delegation
For complex image generation tasks, delegate to the image-generator subagent which has access to all generation scripts and can handle multi-step workflows.
Quick Reference
Providers
Google Gemini (Gemini)
- Models:
gemini-2.5-flash-image, gemini-3-pro-image-preview
- Best for: Character consistency, multi-turn iteration, style variety
- API Key:
GEMINI_API_KEY or GOOGLE_API_KEY
OpenAI GPT-Image
- Models:
gpt-image-2 (default), gpt-image-1.5, gpt-image-1 (the only one supporting transparent backgrounds), gpt-image-1-mini
- Best for: Text in images, precise edits. gpt-image-2 has built-in reasoning ("thinking mode") and is state-of-the-art. Use
gpt-image-1 when you need transparency.
- API Key:
OPENAI_API_KEY
Common Sizes/Aspect Ratios
| Format | Google | OpenAI |
|---|
| Square | 1:1 | 1024x1024 |
| Landscape | 16:9 | 1536x1024 |
| Portrait | 9:16 | 1024x1536 |
| Wide | 21:9 | - |
Example Interactions
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.
Prerequisites Check
Before generating, verify:
- Required Python packages:
google-genai, openai, Pillow (for resizing)
- API keys set in environment
- Output directory accessible
pip install google-genai openai Pillow
export GEMINI_API_KEY=your_key
export OPENAI_API_KEY=your_key
Prompt Tips
Help users craft effective prompts:
- Be descriptive but concise
- Specify style (photorealistic, watercolor, minimalist)
- Include lighting (golden hour, dramatic, soft)
- Mention composition (close-up, wide shot, centered)
- For characters, include distinctive features
- For logos, specify simplicity level
