I'm trying to send Content Builder emails via the REST API and the best option looks like the 'www.exacttargetapis.com/messaging/v1' endpoint. But there is little documentation on the API web site for it.
I can use the '/messaging/v1/rest' resource to see the available options but without knowing what to POST to them its hopeless.
Any help would be really appreciated. I'm sure I can't be the only person wanting to do this.