diff --git a/5sim_api.sln b/5sim_api.sln
new file mode 100644
index 0000000..f9b67fc
--- /dev/null
+++ b/5sim_api.sln
@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.28307.960
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "5sim_api", "5sim_api\5sim_api.csproj", "{1D899BD5-4120-44E8-8F82-196C3210F35E}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{1D899BD5-4120-44E8-8F82-196C3210F35E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{1D899BD5-4120-44E8-8F82-196C3210F35E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{1D899BD5-4120-44E8-8F82-196C3210F35E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{1D899BD5-4120-44E8-8F82-196C3210F35E}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {03824117-8979-4BD3-B7C7-798A20B91713}
+	EndGlobalSection
+EndGlobal
diff --git a/5sim_api/5sim_api.csproj b/5sim_api/5sim_api.csproj
new file mode 100644
index 0000000..2c08497
--- /dev/null
+++ b/5sim_api/5sim_api.csproj
@@ -0,0 +1,8 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+    <RootNamespace>_5sim_api</RootNamespace>
+  </PropertyGroup>
+
+</Project>
diff --git a/5sim_api/Class1.cs b/5sim_api/Class1.cs
new file mode 100644
index 0000000..7836e12
--- /dev/null
+++ b/5sim_api/Class1.cs
@@ -0,0 +1,8 @@
+using System;
+
+namespace _5sim_api
+{
+    public class Class1
+    {
+    }
+}