diff --git a/ZB.MOM.WW.SPHistorianClient/.gitignore b/ZB.MOM.WW.SPHistorianClient/.gitignore
new file mode 100644
index 0000000..894d9d5
--- /dev/null
+++ b/ZB.MOM.WW.SPHistorianClient/.gitignore
@@ -0,0 +1,6 @@
+bin/
+obj/
+# identity-bearing / non-redistributable — never commit
+*.ndjson
+current/
+aveva-install-*/
diff --git a/ZB.MOM.WW.SPHistorianClient/Directory.Build.props b/ZB.MOM.WW.SPHistorianClient/Directory.Build.props
new file mode 100644
index 0000000..c4755a6
--- /dev/null
+++ b/ZB.MOM.WW.SPHistorianClient/Directory.Build.props
@@ -0,0 +1,12 @@
+<Project>
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <LangVersion>latest</LangVersion>
+    <Version>0.1.0</Version>
+    <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
+  </PropertyGroup>
+
+</Project>
diff --git a/ZB.MOM.WW.SPHistorianClient/Directory.Packages.props b/ZB.MOM.WW.SPHistorianClient/Directory.Packages.props
new file mode 100644
index 0000000..ab763ff
--- /dev/null
+++ b/ZB.MOM.WW.SPHistorianClient/Directory.Packages.props
@@ -0,0 +1,30 @@
+<Project>
+
+  <PropertyGroup>
+    <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <!-- Historian SDK runtime deps (WCF/MDAS transports — Windows-only at runtime) -->
+    <PackageVersion Include="System.Security.Cryptography.Xml" Version="10.0.7" />
+    <PackageVersion Include="System.ServiceModel.NetNamedPipe" Version="10.0.652802" />
+    <PackageVersion Include="System.ServiceModel.NetTcp" Version="10.0.652802" />
+
+    <!-- 2023 R2 gRPC transport (cross-platform) -->
+    <PackageVersion Include="Google.Protobuf" Version="3.24.4" />
+    <PackageVersion Include="Grpc.Net.Client" Version="2.58.0" />
+    <PackageVersion Include="Grpc.Net.Client.Web" Version="2.58.0" />
+    <PackageVersion Include="Grpc.Tools" Version="2.59.0" />
+
+    <!-- ZB-idiomatic DI extension (only non-BCL lib dependency) -->
+    <PackageVersion Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="10.0.7" />
+
+    <!-- Test -->
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+    <PackageVersion Include="xunit" Version="2.9.3" />
+    <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.4" />
+    <PackageVersion Include="coverlet.collector" Version="6.0.4" />
+    <PackageVersion Include="Microsoft.Data.SqlClient" Version="6.0.2" />
+  </ItemGroup>
+
+</Project>
diff --git a/ZB.MOM.WW.SPHistorianClient/ZB.MOM.WW.SPHistorianClient.slnx b/ZB.MOM.WW.SPHistorianClient/ZB.MOM.WW.SPHistorianClient.slnx
new file mode 100644
index 0000000..a4d8a21
--- /dev/null
+++ b/ZB.MOM.WW.SPHistorianClient/ZB.MOM.WW.SPHistorianClient.slnx
@@ -0,0 +1,8 @@
+<Solution>
+  <Folder Name="/src/">
+    <Project Path="src/ZB.MOM.WW.SPHistorianClient/ZB.MOM.WW.SPHistorianClient.csproj" />
+  </Folder>
+  <Folder Name="/tests/">
+    <Project Path="tests/ZB.MOM.WW.SPHistorianClient.Tests/ZB.MOM.WW.SPHistorianClient.Tests.csproj" />
+  </Folder>
+</Solution>
diff --git a/ZB.MOM.WW.SPHistorianClient/src/ZB.MOM.WW.SPHistorianClient/ZB.MOM.WW.SPHistorianClient.csproj b/ZB.MOM.WW.SPHistorianClient/src/ZB.MOM.WW.SPHistorianClient/ZB.MOM.WW.SPHistorianClient.csproj
new file mode 100644
index 0000000..1d72c4d
--- /dev/null
+++ b/ZB.MOM.WW.SPHistorianClient/src/ZB.MOM.WW.SPHistorianClient/ZB.MOM.WW.SPHistorianClient.csproj
@@ -0,0 +1,43 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <IsPackable>true</IsPackable>
+    <PackageId>ZB.MOM.WW.SPHistorianClient</PackageId>
+    <Authors>ZB.MOM.WW</Authors>
+    <Description>Pure-managed .NET 10 client for AVEVA System Platform Historian (Wonderware) for the ZB.MOM.WW SCADA family. The wire protocol is reverse-engineered and re-implemented in C# — no native AVEVA runtime dependency. Surfaces history reads (raw / aggregate / at-time / event), tag browse + metadata, status, and tag create/delete over the WCF/MDAS transports (Windows) plus a cross-platform gRPC transport for 2023 R2.</Description>
+    <PackageTags>aveva;wonderware;historian;system-platform;scada;timeseries;grpc;wcf;zb-mom-ww</PackageTags>
+    <PackageProjectUrl>https://gitea.dohertylan.com/dohertj2/zb-mom-ww-sphistorianclient</PackageProjectUrl>
+    <RepositoryUrl>https://gitea.dohertylan.com/dohertj2/zb-mom-ww-sphistorianclient</RepositoryUrl>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="System.Security.Cryptography.Xml" />
+    <PackageReference Include="System.ServiceModel.NetNamedPipe" />
+    <PackageReference Include="System.ServiceModel.NetTcp" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" />
+  </ItemGroup>
+
+  <!-- 2023 R2 gRPC transport (RemoteGrpc). Pure-managed: Grpc.Net.Client + Google.Protobuf.
+       Grpc.Tools is build-only (PrivateAssets=all) and generates the client stubs from the
+       recovered contract under Grpc/Protos at build. -->
+  <ItemGroup>
+    <PackageReference Include="Google.Protobuf" />
+    <PackageReference Include="Grpc.Net.Client" />
+    <PackageReference Include="Grpc.Net.Client.Web" />
+    <PackageReference Include="Grpc.Tools">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <Protobuf Include="Grpc/Protos/*.proto" GrpcServices="Client" ProtoRoot="Grpc/Protos" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleToAttribute">
+      <_Parameter1>ZB.MOM.WW.SPHistorianClient.Tests</_Parameter1>
+    </AssemblyAttribute>
+  </ItemGroup>
+
+</Project>
diff --git a/ZB.MOM.WW.SPHistorianClient/tests/ZB.MOM.WW.SPHistorianClient.Tests/ZB.MOM.WW.SPHistorianClient.Tests.csproj b/ZB.MOM.WW.SPHistorianClient/tests/ZB.MOM.WW.SPHistorianClient.Tests/ZB.MOM.WW.SPHistorianClient.Tests.csproj
new file mode 100644
index 0000000..e593f46
--- /dev/null
+++ b/ZB.MOM.WW.SPHistorianClient/tests/ZB.MOM.WW.SPHistorianClient.Tests/ZB.MOM.WW.SPHistorianClient.Tests.csproj
@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" />
+    <PackageReference Include="Microsoft.Data.SqlClient" />
+    <PackageReference Include="xunit" />
+    <PackageReference Include="xunit.runner.visualstudio" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\ZB.MOM.WW.SPHistorianClient\ZB.MOM.WW.SPHistorianClient.csproj" />
+  </ItemGroup>
+
+</Project>