Using the REST API with .NET¶ Redmine .NET API library is a FREE third-party C# library that can be used to access the Redmine API. It is released under Apache 2 open-source license. To use this library from PowerShell, see REST API with PowerShell Sample usage: using System; using System.Collections.Specialized; using Redmine.Net.Api; using Redmine.Net.Api.Types; namespace RedmineTest { class Pro