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[BarryCarlyon]

@LordSherman

Thank you for going more in depth, this is slightly related but do you know if I am added as a channel editor on my friends stream if I will be able to access dev.twitch.tv as them?

No.

Channel Editor provides no access to dev.twitch.tv as another user.

@LordSherman

I want to do this for them without them having to do anything. Is this possible?

No, if you intend to use broadcaster auth, you will need the broadcaster to perform the oAuth authentication at least once.