If your GoPro supports live streaming - you can stream with api.video.
You will need to use an app, like Quik, to connect to your GoPro. That's where the LiveStream option is.
Choose "Other RTMP:
Then connect to WiFi and paste in your Live streams RTMP URL (you can get this from the API or Sign in | API Video).
Once you start the stream - you'll be able to watch your Livestream from your GoPro.