The WhatsApp API supports the following sticker types:

• image/webp (.webp)

The maximum file size allowed for stickers is 100 KB.

PARAMETER	FORMAT	REQUIRED	DESCRIPTION	DEFAULT
url	string	Yes	The URL that your sticker file is uploaded to should be publicly accessible
caption	string	Optional	Sticker caption

Sample request using CURL:

$ curl -X POST https://api.geniq.io/rest/v1/whatsapp/messages \
-H 'Authorization: Bearer [TOKEN]' \
-H 'Content-Type: application/json' \
-d '{
    "recipient":"6591234567",                
    "type":"sticker",
    "url":"https://file-examples.com/storage/fe15076da466528199d9c5a/2020/03/file_example_WEBP_50kB.webp",
    "caption":"Sample Sticker",
    "reference": "12345"
}' \