Class ProjectServerManager

public sealed class ProjectServerManager

public ProjectServerManager(ProjectServerCredentials credentials)

string site = "http://project_server_instance.local/";
var windowsCredentials = new NetworkCredential("Administrator", "my_password", "DOMAIN");
var projectServerCredentials = new ProjectServerCredentials(site, windowsCredentials);
ProjectServerManager manager = new ProjectServerManager(projectServerCredentials);

var credentials = new ProjectServerCredentials("https://xxxxxx.sharepoint.com", "yyyyy@xxxxxxx.onmicrosoft.com", "password");
ProjectServerManager manager = new ProjectServerManager(projectServerCredentials);

public void CreateNewProject(Project project)

var credentials = new ProjectServerCredentials("https://xxxxxx.sharepoint.com", "yyyyy@xxxxxxx.onmicrosoft.com", "password");
var project = new Project(@"sample.mpp");
ProjectServerManager manager = new ProjectServerManager(credentials);
manager.CreateNewProject(project);

public void CreateNewProject(Project project, ProjectServerSaveOptions saveOptions)

var credentials = new ProjectServerCredentials("https://xxxxxx.sharepoint.com", "yyyyy@xxxxxxx.onmicrosoft.com", "password");
var project = new Project(@"sample.mpp");
ProjectServerManager manager = new ProjectServerManager(credentials);
manager.CreateNewProject(project, new ProjectServerSaveOptions
{
    ProjectName = "My new project"
});

public Project GetProject(Guid projectGuid)

public IEnumerable<projectinfo> GetProjectList()

public Stream GetProjectRawData(Guid projectGuid)

In this example the debug info for the specific project is retrieved. You can pass the resulting "debug.zip" to the support team for troubleshooting purposes.
[C#]
var credentials = new ProjectServerCredentials("https://xxxxxx.sharepoint.com", "yyyyy@xxxxxxx.onmicrosoft.com", "password");
// Guid of project you are trying to get.
var projectGuid = new Guid("e0294bfb-5657-45c8-9cc5-82169fb95d69");
ProjectServerManager manager = new ProjectServerManager(credentials);
using (var fileStream = File.OpenWrite(@"c:\debug.zip"))
{
    using (var stream = manager.GetProjectRawData(projectGuid))
    {
        stream.CopyTo(fileStream);
    }
}

public void UpdateProject(Project project)

var credentials = new ProjectServerCredentials("https://xxxxxx.sharepoint.com", "yyyyy@xxxxxxx.onmicrosoft.com", "password");
ProjectServerManager manager = new ProjectServerManager(credentials);
var projectList = manager.GetProjectList();
var projectGuid = projectList.First().Id;
var project = manager.GetProject(projectGuid);
var task = project.RootTask.Children.Add("New task");
manager.UpdateProject(project);

public void UpdateProject(Project project, ProjectServerSaveOptions saveOptions)

var credentials = new ProjectServerCredentials("https://xxxxxx.sharepoint.com", "yyyyy@xxxxxxx.onmicrosoft.com", "password");
ProjectServerManager manager = new ProjectServerManager(credentials);
var projectList = manager.GetProjectList();
var projectGuid = projectList.First().Id;
var project = manager.GetProject(projectGuid);
var task = project.RootTask.Children.Add("New task");
manager.UpdateProject(project, new ProjectServerSaveOptions
{
    ProjectGuid = projectGuid
});

public event EventHandler<webrequesteventargs> ExecutingWebRequest