How to create a token for a widget?

Question

JavaScript

Hello. I made an application on vuejs and laravel that communicates with each other via API. But now there is a demand for a multi-user web widget that people can embed on their site. It is necessary that a person could insert the widget code on the site. For example, how is it done by jivosite, vk, facebook, etc.
Actually, the question is more in tokens, how to create them for the client and how to store them?

Answer 1

md5(uniqid(rand(), true))
Store in db. But why do you need a token?