Stream with your character
Connect a channel and your character co-hosts while you play: during a Tagalong session it reads your live chat and banters back, grounded in what is on your screen.
Twitch
Live chat co-hosting over EventSub. Connect the channel you stream from.
YouTube
Live chat co-hosting for YouTube broadcasts. Connect the Google account that owns your channel; the character joins whenever a broadcast is live.
OBS overlay
Every Tagalong session mints a private overlay link. Start watching on the Watch tab, copy the overlay link from the session shell, then add it in OBS as a Browser Source: it renders the character's spoken lines as a lower-third over your stream.