Woocommerce Product import API uploads featured images
Endpoint:http://yourdomain.com/wp-json/wc/v2/products
Basic POST:
{ "name": "Featured Image from URL", "meta_data": [ { "key": "fifu_image_url", "value": "http://ps.w.org/featured-image-from-url/assets/icon-256x256.png" }, { "key": "fifu_image_alt", "value": "Logo" } ]}