We highly recommend you read Generate API parameters explained before delving into this page.

For parameters with a long list of accepted values, please reference:

imageOptions.model accepts values listed in Image model accepted values.
textOptions.language accepts values listed in Output language accepted values.
List Themes and List Folders endpoints can be used to find values for the themeId and folderIds parameters.

Generated gammas appear in a separate tab in your dashboard. This tab appears only after you have successfully created at least one gamma using the API.