It's a rather new portion of chat API, currently used for Twitch Prime, Bits and Warcraft Alliance/Horde badges. Announcement and only complete documentation is here: https://discuss.dev.twitch.tv/t/beta-badge-api/6388
It's a rather new portion of chat API, currently used for Twitch Prime, Bits and Warcraft Alliance/Horde badges.
Announcement and only complete documentation is here: https://discuss.dev.twitch.tv/t/beta-badge-api/6388