Whenever you call the endpoint “qrcode”, it returns a QR code in base 64 format. You should show it on an HTML page and scan the code in your WhatsApp application to log in to your WhatsApp account.

Also you need to set a callback_url as query parameter for this endpoint. callback_urs is a webhook address. So before calling this endpoint you need to provide this address. In response to your call to the endpoint, our service sends a POST request to the address including a JSON body that has 3 parametes: type, id and token. type will be login. id and token will be used to verify that it’s you that is calling other endpoints in the future.

Whenever you want to call other endpoints such as send, you have to include id and token in the JSON body of the request.

Guide to show a base64 image in HTML

A service to create webhook addresses with no need to having a service