activer007/generate-image
skills_categorized/design/generate-image/SKILL.md
Generate or edit images using AI models (FLUX, Gemini). Use for scientific illustrations, diagrams, schematics, infographics, concept visualizations, and artistic images. Supports image editing to modify existing images (change colors, add/remove elements, style transfer). Useful for figures, posters, and visual explanations.
$ install --global
skillsauthnpx skillsauth add activer007/ordinary-claude-skills generate-imageInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Last scanned: Mar 30, 2026, 12:53 AM37.0s2 files scanned
SKILL.md
- name:
- generate-image
- description:
- Generate or edit images using AI models (FLUX, Gemini). Use for scientific illustrations, diagrams, schematics, infographics, concept visualizations, and artistic images. Supports image editing to modify existing images (change colors, add/remove elements, style transfer). Useful for figures, posters, and visual explanations.
Generate Image
Generate and edit high-quality images using OpenRouter's image generation models including FLUX.2 Pro and Nano Banana Pro (Gemini 3 Pro).
Quick Start
Use the scripts/generate_image.py script to generate or edit images:
# Generate a new image
python scripts/generate_image.py "A beautiful sunset over mountains"
# Edit an existing image
python scripts/generate_image.py "Make the sky purple" --input photo.jpg
This generates/edits an image and saves it as generated_image.png in the current directory.
API Key Setup
CRITICAL: The script requires an OpenRouter API key. Before running, check if the user has configured their API key:
- Look for a
.envfile in the project directory or parent directories - Check for
OPENROUTER_API_KEY=<key>in the.envfile - If not found, inform the user they need to:
- Create a
.envfile withOPENROUTER_API_KEY=your-api-key-here - Or set the environment variable:
export OPENROUTER_API_KEY=your-api-key-here - Get an API key from: https://openrouter.ai/keys
- Create a
The script will automatically detect the .env file and provide clear error messages if the API key is missing.
Model Selection
Default model: google/gemini-3-pro-image-preview (high quality, recommended)
Available models for generation and editing:
google/gemini-3-pro-image-preview- High quality, supports generation + editingblack-forest-labs/flux.2-pro- Fast, high quality, supports generation + editing
Generation only:
black-forest-labs/flux.2-dev- Development version, generation only
Select based on:
- Quality: Use gemini-3-pro or flux.2-pro
- Editing: Use gemini-3-pro or flux.2-pro (both support image editing)
- Cost: Use flux.2-dev for generation only
Common Usage Patterns
Basic generation
python scripts/generate_image.py "Your prompt here"
Specify model
python scripts/generate_image.py "A cat in space" --model "black-forest-labs/flux.2-pro"
Custom output path
python scripts/generate_image.py "Abstract art" --output artwork.png
Edit an existing image
python scripts/generate_image.py "Make the background blue" --input photo.jpg
Edit with a specific model
python scripts/generate_image.py "Add sunglasses to the person" --input portrait.png --model "black-forest-labs/flux.2-pro"
Edit with custom output
python scripts/generate_image.py "Remove the text from the image" --input screenshot.png --output cleaned.png
Multiple images
Run the script multiple times with different prompts or output paths:
python scripts/generate_image.py "Image 1 description" --output image1.png
python scripts/generate_image.py "Image 2 description" --output image2.png
Script Parameters
prompt(required): Text description of the image to generate, or editing instructions--inputor-i: Input image path for editing (enables edit mode)--modelor-m: OpenRouter model ID (default: google/gemini-3-pro-image-preview)--outputor-o: Output file path (default: generated_image.png)--api-key: OpenRouter API key (overrides .env file)
Error Handling
The script provides clear error messages for:
- Missing API key (with setup instructions)
- API errors (with status codes)
- Unexpected response formats
- Missing dependencies (requests library)
If the script fails, read the error message and address the issue before retrying.
Notes
- Images are returned as base64-encoded data URLs and automatically saved as PNG files
- The script supports both
imagesandcontentresponse formats from different OpenRouter models - Generation time varies by model (typically 5-30 seconds)
- For image editing, the input image is encoded as base64 and sent to the model
- Supported input image formats: PNG, JPEG, GIF, WebP
- Check OpenRouter pricing for cost information: https://openrouter.ai/models
Image Editing Tips
- Be specific about what changes you want (e.g., "change the sky to sunset colors" vs "edit the sky")
- Reference specific elements in the image when possible
- For best results, use clear and detailed editing instructions
- Both Gemini 3 Pro and FLUX.2 Pro support image editing through OpenRouter
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