403 response codes: good point. We now send 403s if there's an error. However, even then the response-text is sent encoded as { response: { status: "Error: .

403 response codes: good point. We now send 403s if there's an error. However, even then the response-text is sent encoded as { response: { status: "Error: ... " } } Hope this works for you. Regarding the POST/PUT for contacts, your use case is reasonable enough (and very good for us :) Also, the whole point of an API is to enable new use cases which we can't think of! We will open up modifications of tags / contacts / groups / etc. in our next update.