Start Conversation via HTTP API

I might be missing something, but doesn’t that endpoint allow us to add intents to our bot? I want to send a message from a server that simply represents the user’s message and perhaps a conversation ID (something that I track on my end).

For example, I don’t know what endpoint to hit if I want to send a message “Help me” from user 123 and conversation id abc29873420.

And yes, I have enabled the api via endpoints.yml.

Thanks for your help.