KBonk doesn't use a chatbot of any kind, so if you're unable to use redeems or the test buttons in the main app for your purposes then unfortunately public chat messages are likely what you'll need to use!
Can I ask what your specific use case is?
I was trying to set up a twitch channel point redeem that only works if the user has a certain rank in Mix It Up. My general idea was to make the redeem go through MIU, check for the rank there, and send a command to KBonk if the rank is sufficient. I hoped to make the command kind of "secret" so users can't just type the command instead of using the redeem.