This skill guides you on how to generate and edit images using the AI image generation service, helping users create high-quality product images, modify existing images, and perform creative visual transformations.
Core Concepts
The AI Image Generation tool produces new images based on a text prompt and optional reference images. It supports a wide range of use cases:
- Text-to-image: Generate a brand-new image purely from a text description.
- Image-to-image: Provide one or more reference images and a prompt to generate a new image that preserves elements from the references.
- Image editing: Modify specific elements, colors, backgrounds, or styles in an existing image.
- Product compositing: Place a product from one image into a scene from another image.
- Model swapping: Replace the model or mannequin in a product photo.
Reference images are strongly recommended when the user wants the output to closely resemble an existing product or scene. Up to 3 reference image URLs can be provided, separated by commas.
Parameter Guide
| Parameter | Required | Description | Default |
|---|---|---|---|
| prompt | Yes | Text description of the desired image. Supports text-to-image, image-to-image, editing, model swapping, and more. Max 1000 characters. | -- |
| referenceImageUrl | No | URL(s) of reference image(s). Separate multiple URLs with commas. Up to 3 images supported. Max 1000 characters. | -- |
| aspectRatio | No | Aspect ratio of the output image. | 1:1 |
Supported Aspect Ratios
| Value | Description |
|---|---|
| 1:1 | Square (default) |
| 3:4 | Portrait |
| 4:3 | Landscape |
| 9:16 | Vertical fullscreen |
| 16:9 | Horizontal fullscreen |
Prompt Writing Tips
- Be specific and descriptive: Clearly describe the subject, scene, lighting, style, and mood you want.
- Reference images by number: When using reference images, refer to them as "image 1," "image 2," etc., in the order they appear in
referenceImageUrl. - State the operation explicitly: Use clear action verbs like "replace," "change," "put," "combine," "generate."
- Keep within 1000 characters: Prompts have a maximum length of 1000 characters.
Prompt Examples by Scenario
Object replacement:
Replace the vase on the table in image 1 with a potted plant
Background color change:
Change the background color of image 1 to pure white
Product compositing:
Place the product from image 2 onto the marble countertop in image 1
Style transfer:
Transform image 1 into the artistic style shown in image 2
Text-to-image (no reference):
A professional product photo of a sleek black wireless headphone on a gradient blue background, studio lighting, 8K quality
Model swapping:
Replace the model in image 1 with a different model while keeping the same clothing and pose
Usage
- API Endpoint:
POST /multimodal/generateImage(seereferences/api.mdfor full parameters, responses, and error codes) - Python Script:
python scripts/multimodal_generate_image.py '<JSON parameters>'
Output strategy (script default behavior):
- Prints the full JSON response to stdout
Data reading tip: Use jq or ConvertFrom-Json to extract specific fields from the response as needed.
Display Rules
- Show the generated image: When the response contains image content in the
textfield, display it directly to the user using markdown image syntax. - Status reporting: Check the
statusandfinishedfields. If image generation is still in progress, inform the user and advise waiting. - Prompt transparency: Briefly describe what prompt and parameters were sent so the user understands what was requested.
- Aspect ratio confirmation: If the user does not specify dimensions, use the default 1:1 ratio but mention it so they can request a different ratio if needed.
- Reference image guidance: If the user wants a result close to an existing image but did not provide a reference URL, proactively suggest they provide one for better fidelity.
- Error handling: When generation fails, explain the issue based on the response
statusfield and suggest adjustments (e.g., simplify the prompt, check reference image URLs, try a different aspect ratio).
Important Limitations
- Reference image limit: A maximum of 3 reference image URLs can be provided per request.
- Prompt length: The prompt must not exceed 1000 characters.
- URL validity: Reference image URLs must be publicly accessible. Private or expired URLs will cause failures.
- Aspect ratio options: Only 1:1, 3:4, 4:3, 9:16, and 16:9 are supported.
User Expression & Scenario Quick Reference
Applicable -- Requests involving image generation or editing:
| User Says | Scenario |
|---|---|
| "Generate an image," "Create a picture" | Text-to-image generation |
| "Edit this photo," "Modify the image" | Image editing |
| "Change the background," "Make it white background" | Background replacement |
| "Put the product on this scene" | Product compositing |
| "Make it look like this style" | Style transfer |
| "Swap the model," "Change the person" | Model swapping |
| "Create a product photo" | Product image generation |
| "Make a vertical/landscape version" | Aspect ratio adjustment |
Not applicable -- Needs beyond image generation:
- Image analysis or recognition (reading text from images, identifying objects)
- Video generation or editing
- Image file format conversion
- Batch processing of hundreds of images
- Image hosting or storage
Authentication
Set NEXSCOPE_API_KEY. Visit https://www.nexscope.ai/help/skills-external-access?co-from=skillNS to manage credits.