Twitch Chat Extension Send API

[Hellcat]

There’s a pretty lengthy discussion about this in the RFC about it:

RFC 0007 - Chat Capabilities in Extensions

Chat Capabilities in Extensions Summary Twitch chat is an important shared attention space on the channel page leveraged by both streamers and viewers to communicate and interact. Extensions facilitate the connection between streamers and their viewers by offering new ways to engage with the streamer and their content. By building new extension capabilities into chat, we can increase the effectiveness and reach of the interactions created by extensions. Chat Capabilities in Extensions (CCE) wil…

Currently there’s no way to make extension chat messages via the API call appear outside the chat of the channel.

Only way ATM is to connect to the IRC interface and send it as an actual chat message from there.