I’ve been developing a web app to manage fighting game tournament streams. It currently grabs the timestamps for the start and end of each competitive set through the Twitch API. It also auto generates titles based on the player names and round.
Trying to highlight each set by copying and pasting every timestamp and title can become very tedious. Others have suggested highlights creation before, but I think this is a good use case. A lot of fighting game streams currently record sets locally and upload them to YouTube. Having a highlights creation API would completely remove the rendering and upload process for streamers and have it all automated through Twitch.