Does beeper have an API with a curl interface ? As in, I can run a curl command with an API key and generate an imessage ? How can I throw money at this today ? EDIT: OK, I understand that the same restrictions are extant that always have been - namely, an Apple device needs to be involved in creating the actual imessage. So this is not the breakthrough service I thought it might be.
As Beeper is based on Matrix, you can use the standard Matrix API, use libraries like Maubot, and plenty of others in other programming languages. HTTP calls are one way to send/receive messages but there's more flexibility to be gained if you pick a wrapper library IMO.