Can a streamer buy an extension product?

[BarryCarlyon]

@aymen-mouelhi

or should the streamer get forwarded to some external platform from where he/she can enable and pay for the extra service ?

This is allowed, as you are charging the streamer.

So streamers can “pay 5 USD a month a get stuff unlocked in the extension for me to use on my channel”

@aymen-mouelhi

would it be allowed within the extension to use a third party payment service (say stripe) in order to allow the streamer to buy a service in the extension

This is not

So you’d normally link such a flow from the configuration panel, offsite to your EBS/other server to handle the payment flows

5.1 Extensions may provide differentiated experiences or functionality to broadcasters, in exchange for compensation from broadcasters. Examples: tiered access to features or purchasable plugins to add functionality.

Extensions Guidelines & Policies

5.2 refers more to viewers, it’s just missing the explicit term of saying “viewers” and operation inside the extension itself.