It’s not easy actually because of client-side encryption and lack of browser’s ability to be multithreaded
You can read more there:
https://support.tardigrade.io/hc/en-us/articles/360035332472-Why-can-t-I-upload-from-the-browser-
But it could be possible to make such an extension with the Gateway MT:
Because you can have the similar experience with the Tardigrade S3 Gateway by opening the address http://localhost:7777 right now.
However it is still not clear why it’s need to be related to tokens?
We are focused on the storage - it’s our product, the token is a simple payment method, that’s all. You also can pay with Credit Cards for the storage, but will not have a discount in the last case.