Common render payload
{
"template": "spotlight",
"format": "9:16",
"variables": {
"product_image": "https://cdn.example.com/product.png",
"brand": "Your brand",
"headline": "New drop, now live",
"price": "$48.00",
"cta": "Shop now"
}
}Template-specific fields can vary, but the render payload always identifies the template, output format and variables used in the locked composition.