I’d like to add a Subscribe button for available channels, but I don’t see anything in the Channel object about whether or not subscriptions are enabled. How can I find this flag or do we have to scrape it from twitch.tv/{{channelName}}/subscribe?
An unpublished API you can check out is the “meta” xml API at http://www.twitch.tv/meta/:channel.xml
Two GitHub issues are posted for the inclusion of partner_program and subscription_program into the channel object of Kraken, but there’s no ETA of when those might ever be added. The use of this API is unsupported, but I as well as others rely on it to pull this value.