TeamCity uses Service Messages to provide an easy API to allow for build scripts integration, i.e. the build providing status reports, artifacts publishing, test reporting, etc. A Service Message has the following format: Service Messages introduce a communication protocol for data exchanges  between processes using streams, sockets, HTTP or pipes. I've created a wrapper to allow for easier interaction with TeamCity Service Messages, providing it as a package available on NuGet. Usage PM> Install-Package TeamCity.ServiceMessages The library contains two main classes. One for reading