Basically you have to initiate a conversation first, in order to commnicate with the bot. That simply won't be possible with webhook. I tried, the trigger and the data would be received by the botpress but since there is no conversation you cannot really pass it to the bot. - There is a REST API for Botpress you can use it but you won't go anywhere with that. - Best thing is create a custom integration, there are 3 episodes on how to create a custom integration, the instructions there are very clear and that is the most easiest way to do so. -> Link to First Episode: