Our Message endpoint in the Integrations API provides you with all relevant data about each message in a conversation. Yet, we got feedback that exposing if a message has been generated automatically (eg. via a chat menu) is crucial to integrate with certain analytics tools like Chattermill. That is why we have added a new attributes field in the response.
We have also cleaned up data on direction and channel, to make a clear cut between the two and provide you with the correct data. This also means that we will have to deprecate the former "direction" field by end of March.
Please make sure to adjust to these changes and contact your account owner, if you have any questions.