Merge pull request #361 from specklesystems/dev

Main to dev

.config/dotnet-tools.json

@@ -3,9 +3,9 @@
   "isRoot": true,
   "tools": {
     "csharpier": {
-      "version": "0.30.6",
+      "version": "1.0.2",
       "commands": [
-        "dotnet-csharpier"
+        "csharpier"
       ],
       "rollForward": false
     },

.csharpierignore

@@ -0,0 +1,26 @@
+Directory.Build.targets
+Directory.Build.props
+
+**/bin/*
+**/obj/*
+_ReSharper.SharpCompress/
+bin/
+*.suo
+*.user
+TestArchives/Scratch/
+TestArchives/Scratch2/
+TestResults/
+*.nupkg
+packages/*/
+project.lock.json
+tests/TestArchives/Scratch
+.vs
+tools
+.vscode
+.idea/
+
+.DS_Store
+*.snupkg
+coverage.xml
+
+*.received.*

.csharpierrc.yaml

@@ -1,6 +1,6 @@
 printWidth: 120
 useTabs: false
-tabWidth: 2
+indentSize: 2
 preprocessorSymbolSets:
     - ""
     - "DEBUG"

.github/copilot-instructions.md

@@ -0,0 +1,14 @@
+# Coding standards, domain knowledge, and preferences that AI should follow
+
+## C# Coding Standards
+
+- Use the csharpier formatter for formatting C# code.
+- Use the .editorconfig file for code style settings.
+- Always use `var` when the type is obvious from the right side of the assignment.
+- Always add braces for `if`, `else`, `for`, `foreach`, `while`, and `do` statements, even if they are single-line statements.
+
+## Testing
+
+- Use xUnit for unit testing.
+- Use FluentAssertions for assertions in tests.
+- Use Moq for mocking dependencies in tests.

.github/git-commit-instructions.md

@@ -0,0 +1,22 @@
+# Git Commit Instructions
+
+To ensure high-quality and consistent commits, please follow these guidelines:
+
+1. **Format your code**
+    - Run the `csharpier` formatter on all C# files before committing.
+    - Ensure your code adheres to the `.editorconfig` settings.
+
+2. **Write clear commit messages**
+    - Use the present tense ("Add feature" not "Added feature").
+    - Start with a short summary (max 72 characters), followed by a blank line and a detailed description if necessary.
+
+3. **Test your changes**
+    - Run all unit tests before committing.
+    - Add or update xUnit tests as needed.
+    - Use FluentAssertions for assertions and Moq for mocking in tests.
+
+4. **Review your changes**
+    - Double-check for accidental debug code or commented-out code.
+    - Ensure only relevant files are staged.
+
+Thank you for helping maintain code quality!

Directory.Build.props

@@ -1,5 +1,4 @@
 <Project>
-  
   <PropertyGroup Label="Compiler Properties">
     <LangVersion>12</LangVersion>
     <Nullable>enable</Nullable>
@@ -7,7 +6,6 @@
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
     <RestorePackagesWithLockFile>true</RestorePackagesWithLockFile>
   </PropertyGroup>
-  
   <PropertyGroup Label="Nugetspec Package Properties">
     <!-- Defines common Nugetspec properties -->
     <!-- Inheriting packable projects should define the rest of the nugetspec properties (PackageId, Description) -->
@@ -22,18 +20,16 @@
     <PackageTags>speckle</PackageTags>
     <PackageLicenseExpression>Apache-2.0</PackageLicenseExpression>
   </PropertyGroup>
-
   <PropertyGroup Label="Nuget Package Properties">
-    <IsPackable>false</IsPackable> <!--Can be set to true in inheriting .props/.csproj files for projects that should be packed-->
+    <IsPackable>false</IsPackable>
+    <!--Can be set to true in inheriting .props/.csproj files for projects that should be packed-->
     <PublishRepositoryUrl>true</PublishRepositoryUrl>
     <EmbedUntrackedSources>true</EmbedUntrackedSources>
     <AllowedOutputExtensionsInPackageBuildOutputFolder>$(AllowedOutputExtensionsInPackageBuildOutputFolder);.pdb</AllowedOutputExtensionsInPackageBuildOutputFolder>
   </PropertyGroup>
-
   <PropertyGroup Condition="'$(GITHUB_ACTIONS)' == 'true'">
     <ContinuousIntegrationBuild>true</ContinuousIntegrationBuild>
   </PropertyGroup>
-
   <PropertyGroup Label="Analyers">
     <EnableNetAnalyzers>true</EnableNetAnalyzers>
     <AnalysisLevel>latest-AllEnabledByDefault</AnalysisLevel>
@@ -41,7 +37,6 @@
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <AllowUnsafeBlocks>false</AllowUnsafeBlocks>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
-    
     <!-- Ingored warnings, some aspirational but too noisy for now, some by design.  -->
     <NoWarn>
       <!--Disabled by design-->
@@ -59,28 +54,20 @@
       <!-- Aspirational -->
       CA1502;CA1716;NETSDK1206;
       $(NoWarn)
-    </NoWarn>
+    </NoWarn
+    >
   </PropertyGroup>
-  
   <PropertyGroup>
     <!-- Expose the repository root to all projects -->
     <RepositoryRoot>$(MSBuildThisFileDirectory)</RepositoryRoot>
-  </PropertyGroup>  
-  
+  </PropertyGroup>
   <ItemGroup>
-    <None Include="..\..\README.md" Pack="true" PackagePath="\"/>
-    <None
-      Condition="'$(IsPackable)' == 'true'"
-      Include="..\..\logo.png"
-      Pack="true"
-      PackagePath="\"
-      Visible="false"/>
+    <None Include="..\..\README.md" Pack="true" PackagePath="\" />
+    <None Condition="'$(IsPackable)' == 'true'" Include="..\..\logo.png" Pack="true" PackagePath="\" Visible="false" />
   </ItemGroup>
-
   <ItemGroup>
     <!-- This file contains the configuration for some analyzer warnings, such as cyclomatic
 complexity threshold -->
-    <AdditionalFiles Include="$(RepositoryRoot)CodeMetricsConfig.txt"/>
+    <AdditionalFiles Include="$(RepositoryRoot)CodeMetricsConfig.txt" />
   </ItemGroup>
-  
 </Project>

Directory.Build.targets

@@ -1,18 +1,17 @@
 <Project>
-    <PropertyGroup Condition="'$(IsTestProject)' == 'true'">
-        <NoWarn>
-            $(NoWarn);
-            <!-- Things we need to test -->
-            CS0618;CA1034;CA2201;CA1051;CA1040;CA1724;
-            IDE0044;IDE0130;CA1508;
-            <!-- Analysers that provide no tangeable value to a test project -->
-            CA5394;CA2007;CA1852;CA1819;CA1711;CA1063;CA1816;CA2234;CS8618;CA1054;CA1810;CA2208;CA1019;CA1831;
-        </NoWarn>
-    </PropertyGroup>
-
+  <PropertyGroup Condition="'$(IsTestProject)' == 'true'">
+    <NoWarn>
+      <!-- Things we need to test -->
+      CS0618;CA1034;CA2201;CA1051;CA1040;CA1724;
+      IDE0044;IDE0130;CA1508;
+      <!-- Analysers that provide no tangeable value to a test project -->
+      CA5394;CA2007;CA1852;CA1819;CA1711;CA1063;CA1816;CA2234;CS8618;CA1054;CA1810;CA2208;CA1019;CA1831;
+      $(NoWarn);
+    </NoWarn>
+  </PropertyGroup>
   <Target Name="DeepClean">
-    <Message Text="Deep clean of $(MSBuildProjectName).csproj" Importance="high"/>
-    <RemoveDir Directories="$(BaseIntermediateOutputPath)"/>
-    <RemoveDir Directories="$(BaseOutputPath)"/>
+    <Message Text="Deep clean of $(MSBuildProjectName).csproj" Importance="high" />
+    <RemoveDir Directories="$(BaseIntermediateOutputPath)" />
+    <RemoveDir Directories="$(BaseOutputPath)" />
   </Target>
 </Project>

Directory.Packages.props

@@ -11,14 +11,15 @@
     <PackageVersion Include="Microsoft.CSharp" Version="4.7.0" />
     <!-- Keep at exactly 7.0.5 for side by side with V2 -->
     <PackageVersion Include="Microsoft.Data.Sqlite" Version="[7.0.5,)" />
-    <PackageVersion Include="Microsoft.Extensions.ObjectPool" Version="9.0.3" />
+    <PackageVersion Include="Microsoft.Extensions.ObjectPool" Version="9.0.4" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="[2.2.0,)" />
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="[2.2.0,)" />
     <PackageVersion Include="Microsoft.Extensions.Logging" Version="[2.2.0,)" />
     <PackageVersion Include="Microsoft.Bcl.AsyncInterfaces" Version="[5.0.0,)" />
     <PackageVersion Include="Moq" Version="4.20.72" />
-    <PackageVersion Include="Open.ChannelExtensions" Version="9.0.0" />
+    <PackageVersion Include="Newtonsoft.Json.Schema" Version="4.0.1" />
+    <PackageVersion Include="Open.ChannelExtensions" Version="9.1.0" />
     <PackageVersion Include="Polly" Version="7.2.3" />
     <PackageVersion Include="Polly.Contrib.WaitAndRetry" Version="1.1.1" />
     <PackageVersion Include="Polly.Extensions.Http" Version="3.0.0" />
@@ -26,9 +27,11 @@
     <PackageVersion Include="Speckle.Newtonsoft.Json" Version="13.0.2" />
     <PackageVersion Include="Speckle.DoubleNumerics" Version="4.1.0" />
     <PackageVersion Include="SimpleExec" Version="12.0.0" />
-    <PackageVersion Include="System.Threading.Channels" Version="9.0.2" />
+    <PackageVersion Include="System.CommandLine" Version="2.0.0-beta4.22272.1" />
+    <PackageVersion Include="System.Threading.Channels" Version="9.0.4" />
     <PackageVersion Include="Verify.Quibble" Version="2.1.1" />
-    <PackageVersion Include="Verify.Xunit" Version="29.2.0" />
+    <PackageVersion Include="Verify.Xunit" Version="29.4.0" />
+    <PackageVersion Include="System.Text.Json" Version="8.0.5" />
     <PackageVersion Include="xunit" Version="2.9.3" />
     <PackageVersion Include="xunit.assert" Version="2.9.3" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="3.0.2" />

README.md

@@ -18,8 +18,9 @@ Speckle | Sharp | SDK
 This repo is the home of our next-generation Speckle .NET SDK. It uses .NET Standard 2.0 and has been tested on Windows and MacOS.
 
 - **SDK**
-  - [`Speckle.Sdk`](https://github.com/specklesystems/speckle-sharp-sdk/tree/dev/src/Speckle.Sdk): Transports, serialization, API wrappers, and logging.
+  - [`Speckle.Sdk`](https://github.com/specklesystems/speckle-sharp-sdk/tree/dev/src/Speckle.Sdk): Send/Receive operations, Serialization, API wrappers, and more!.
   - [`Speckle.Sdk.Dependencies`](https://github.com/specklesystems/speckle-sharp-sdk/tree/dev/src/Speckle.Sdk.Dependencies): Dependencies and code that shouldn't cause conflicts in Host Apps.  This uses [IL Repack](https://github.com/gluck/il-repack) to merge together and interalized only to be used by Speckle.
+  - [`Speckle.Automate.Sdk`](https://github.com/specklesystems/speckle-sharp-sdk/tree/dev/src/Speckle.Automate.Sdk): .NET SDK for [Speckle Automate](https://www.speckle.systems/product/automate)
 - **Speckle Objects**
   - [`Speckle.Objects`](https://github.com/specklesystems/speckle-sharp-sdk/tree/dev/src/Speckle.Objects): The Speckle Objects classes used for conversions.
 - **Tests**

Speckle.Sdk.sln

@@ -9,6 +9,9 @@ EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Speckle.Objects.Tests.Unit", "tests\Speckle.Objects.Tests.Unit\Speckle.Objects.Tests.Unit.csproj", "{A0338FC0-3011-498F-AD09-01230FABD3ED}"
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{5CB96C27-FC5B-4A41-86B6-951AF99B8116}"
+	ProjectSection(SolutionItems) = preProject
+		src\graphql.config.yml = src\graphql.config.yml
+	EndProjectSection
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "tests", "tests", "{35047EE7-AD1D-4741-80A7-8F0E874718E9}"
 EndProject
@@ -51,6 +54,10 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Speckle.Sdk.Testing", "test
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "performance", "performance", "{FFB07238-87E8-463A-AA39-3B38AAAA94C1}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Speckle.Automate.Sdk", "src\Speckle.Automate.Sdk\Speckle.Automate.Sdk.csproj", "{4EB20EFA-5A38-415E-B3FD-29CA3ACD1EF5}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Speckle.Automate.Sdk.Integration", "tests\Speckle.Automate.Sdk.Integration\Speckle.Automate.Sdk.Integration.csproj", "{B6129DC3-F285-4E5F-85E2-6D2533A4005E}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -105,6 +112,14 @@ Global
 		{7B617C0D-2354-415C-993C-5071D4113E27}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{7B617C0D-2354-415C-993C-5071D4113E27}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{7B617C0D-2354-415C-993C-5071D4113E27}.Release|Any CPU.Build.0 = Release|Any CPU
+		{4EB20EFA-5A38-415E-B3FD-29CA3ACD1EF5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4EB20EFA-5A38-415E-B3FD-29CA3ACD1EF5}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4EB20EFA-5A38-415E-B3FD-29CA3ACD1EF5}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4EB20EFA-5A38-415E-B3FD-29CA3ACD1EF5}.Release|Any CPU.Build.0 = Release|Any CPU
+		{B6129DC3-F285-4E5F-85E2-6D2533A4005E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B6129DC3-F285-4E5F-85E2-6D2533A4005E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B6129DC3-F285-4E5F-85E2-6D2533A4005E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B6129DC3-F285-4E5F-85E2-6D2533A4005E}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(NestedProjects) = preSolution
 		{A413E196-3696-4F48-B635-04B5F76BF9C9} = {5CB96C27-FC5B-4A41-86B6-951AF99B8116}
@@ -119,5 +134,7 @@ Global
 		{7B617C0D-2354-415C-993C-5071D4113E27} = {35047EE7-AD1D-4741-80A7-8F0E874718E9}
 		{FF922B6D-D416-4348-8CB8-0C8B28691070} = {FFB07238-87E8-463A-AA39-3B38AAAA94C1}
 		{870E3396-E6F7-43AE-B120-E651FA4F46BD} = {FFB07238-87E8-463A-AA39-3B38AAAA94C1}
+		{4EB20EFA-5A38-415E-B3FD-29CA3ACD1EF5} = {5CB96C27-FC5B-4A41-86B6-951AF99B8116}
+		{B6129DC3-F285-4E5F-85E2-6D2533A4005E} = {35047EE7-AD1D-4741-80A7-8F0E874718E9}
 	EndGlobalSection
 EndGlobal

Speckle.Sdk.slnx

@@ -0,0 +1,46 @@
+<Solution>
+  <Folder Name="/build/">
+    <Project Path="build/build.csproj" />
+  </Folder>
+  <Folder Name="/config/">
+    <File Path=".config/dotnet-tools.json" />
+    <File Path=".csharpierrc.yaml" />
+    <File Path=".editorconfig" />
+    <File Path="CodeMetricsConfig.txt" />
+    <File Path="Directory.Build.props" />
+    <File Path="Directory.Build.Targets" />
+    <File Path="Directory.Packages.props" />
+    <File Path="docker-compose.yml" />
+    <File Path="GitVersion.yml" />
+    <File Path="global.json" />
+    <File Path="README.md" />
+    <File Path=".github\copilot-instructions.md" />
+    <File Path=".github\git-commit-instructions.md" />
+  </Folder>
+  <Folder Name="/config/workflows/">
+    <File Path=".github/workflows/pr.yml" />
+    <File Path=".github/workflows/release.yml" />
+  </Folder>
+  <Folder Name="/performance/">
+    <Project Path="tests/Speckle.Sdk.Serialization.Testing/Speckle.Sdk.Serialization.Testing.csproj" />
+    <Project Path="tests/Speckle.Sdk.Tests.Performance/Speckle.Sdk.Tests.Performance.csproj" />
+  </Folder>
+  <Folder Name="/src/">
+    <Project Path="src/Speckle.Automate.Sdk/Speckle.Automate.Sdk.csproj" />
+    <Project Path="src/Speckle.Objects/Speckle.Objects.csproj" />
+    <Project Path="src/Speckle.Sdk.Dependencies/Speckle.Sdk.Dependencies.csproj" />
+    <Project Path="src/Speckle.Sdk/Speckle.Sdk.csproj" />
+  </Folder>
+  <Folder Name="/tests/">
+    <Project Path="tests/Speckle.Sdk.Testing/Speckle.Sdk.Testing.csproj" />
+  </Folder>
+  <Folder Name="/tests/integration/">
+    <Project Path="tests/Speckle.Automate.Sdk.Integration/Speckle.Automate.Sdk.Integration.csproj" />
+    <Project Path="tests/Speckle.Sdk.Tests.Integration/Speckle.Sdk.Tests.Integration.csproj" />
+  </Folder>
+  <Folder Name="/tests/unit/">
+    <Project Path="tests/Speckle.Objects.Tests.Unit/Speckle.Objects.Tests.Unit.csproj" />
+    <Project Path="tests/Speckle.Sdk.Serialization.Tests/Speckle.Sdk.Serialization.Tests.csproj" />
+    <Project Path="tests/Speckle.Sdk.Tests.Unit/Speckle.Sdk.Tests.Unit.csproj" />
+  </Folder>
+</Solution>

build/Program.cs

@@ -68,7 +68,7 @@ Target(
 
 Target(RESTORE_TOOLS, () => RunAsync("dotnet", "tool restore"));
 
-Target(FORMAT, dependsOn: [RESTORE_TOOLS], () => RunAsync("dotnet", "csharpier --check ."));
+Target(FORMAT, dependsOn: [RESTORE_TOOLS], () => RunAsync("dotnet", "csharpier check ."));
 
 Target(RESTORE, dependsOn: [FORMAT], () => RunAsync("dotnet", "restore Speckle.Sdk.sln --locked-mode"));
 

build/build.csproj

@@ -1,10 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFramework>net8.0</TargetFramework>
   </PropertyGroup>
- <ItemGroup>
+  <ItemGroup>
     <PackageReference Include="Bullseye" />
     <PackageReference Include="Glob" />
     <PackageReference Include="SimpleExec" />

docker-compose.yml

@@ -100,6 +100,8 @@ services:
       POSTGRES_PASSWORD: "speckle"
       POSTGRES_DB: "speckle"
       ENABLE_MP: "false"
+      
+      LOG_PRETTY: "true"
 
 networks:
   default:

src/Speckle.Automate.Sdk/AutomateContextFactory.cs

@@ -0,0 +1,61 @@
+using System.Diagnostics;
+using System.Text.Json;
+using GraphQL;
+using GraphQL.Client.Http;
+using Speckle.Automate.Sdk.Schema;
+using Speckle.InterfaceGenerator;
+using Speckle.Sdk.Api;
+using Speckle.Sdk.Credentials;
+
+namespace Speckle.Automate.Sdk;
+
+[GenerateAutoInterface(VisibilityModifier = "public")]
+internal sealed class AutomationContextFactory(
+  IClientFactory clientFactory,
+  IAccountFactory accountFactory,
+  IOperations operations
+) : IAutomationContextFactory
+{
+  private static readonly JsonSerializerOptions s_jsonSerializerSettings = new()
+  {
+    PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
+  };
+
+  /// <inheritdoc cref="Initialize(AutomationRunData, string)"/>
+  public async Task<IAutomationContext> Initialize(string automationRunData, string speckleToken)
+  {
+    var runData = JsonSerializer.Deserialize<AutomationRunData>(automationRunData, s_jsonSerializerSettings);
+
+    return await Initialize(runData, speckleToken).ConfigureAwait(false);
+  }
+
+  /// <inheritdoc cref="Initialize(AutomationRunData, Account)"/>
+  /// <exception cref="GraphQLHttpRequestException">Request failed on the HTTP layer (received a non-successful response code)</exception>
+  /// <exception cref="AggregateException"><inheritdoc cref="Speckle.Sdk.Api.GraphQL.GraphQLErrorHandler.EnsureGraphQLSuccess(IGraphQLResponse)"/></exception>
+  public async Task<IAutomationContext> Initialize(AutomationRunData automationRunData, string speckleToken)
+  {
+    Account account = await accountFactory
+      .CreateAccount(automationRunData.SpeckleServerUrl, speckleToken)
+      .ConfigureAwait(false);
+
+    return Initialize(automationRunData, account);
+  }
+
+  /// <summary>
+  /// Creates an <see cref="AutomationContext"/> from the provided data
+  /// </summary>
+  public IAutomationContext Initialize(AutomationRunData automationRunData, Account account)
+  {
+    IClient client = clientFactory.Create(account);
+    Stopwatch initTime = Stopwatch.StartNew();
+
+    return new AutomationContext(operations)
+    {
+      AutomationRunData = automationRunData,
+      SpeckleClient = client,
+      _speckleToken = account.token,
+      _initTime = initTime,
+      AutomationResult = new AutomationResult(),
+    };
+  }
+}

src/Speckle.Automate.Sdk/AutomationContext.cs

@@ -0,0 +1,375 @@
+using System.Diagnostics;
+using System.Diagnostics.CodeAnalysis;
+using GraphQL;
+using Speckle.Automate.Sdk.Schema;
+using Speckle.Automate.Sdk.Schema.Triggers;
+using Speckle.InterfaceGenerator;
+using Speckle.Newtonsoft.Json;
+using Speckle.Sdk;
+using Speckle.Sdk.Api;
+using Speckle.Sdk.Api.GraphQL.Inputs;
+using Speckle.Sdk.Api.GraphQL.Models;
+using Speckle.Sdk.Common;
+using Speckle.Sdk.Models;
+using Version = Speckle.Sdk.Api.GraphQL.Models.Version;
+
+namespace Speckle.Automate.Sdk;
+
+[GenerateAutoInterface(VisibilityModifier = "public")]
+internal sealed class AutomationContext(IOperations operations) : IAutomationContext
+{
+  public AutomationRunData AutomationRunData { get; set; }
+  public string? ContextView
+  {
+    get => AutomationResult.ResultView;
+    private set => AutomationResult.ResultView = value;
+  }
+  public required IClient SpeckleClient { get; init; }
+
+  public required string _speckleToken { get; init; }
+
+  // added for performance measuring
+  public required Stopwatch _initTime { get; init; }
+
+  public required AutomationResult AutomationResult { get; init; }
+
+  public string RunStatus => AutomationResult.RunStatus;
+
+  public string? StatusMessage => AutomationResult.StatusMessage;
+  public TimeSpan Elapsed => _initTime.Elapsed;
+
+  /// <summary>
+  /// Receive version for automation.
+  /// </summary>
+  /// <returns> Commit object. </returns>
+  /// <exception cref="SpeckleException">Throws if commit object is null.</exception>
+  public async Task<Base> ReceiveVersion(CancellationToken cancellationToken = default)
+  {
+    // TODO: this is a quick hack to keep implementation consistency. Move to proper receive many versions
+    if (AutomationRunData.Triggers.First() is not VersionCreationTrigger trigger)
+    {
+      throw new SpeckleException("Processed automation run data without any triggers");
+    }
+    var versionId = trigger.Payload.VersionId;
+
+    var version = await SpeckleClient
+      .Version.Get(versionId, AutomationRunData.ProjectId, cancellationToken)
+      .ConfigureAwait(false);
+
+    if (version.referencedObject == null)
+    {
+      throw new SpeckleException(
+        "The requested speckle model version has exceeded workspace version history limits or the reference object is otherwise null"
+      );
+    }
+
+    Base? rootObject = await operations
+      .Receive2(
+        SpeckleClient.ServerUrl,
+        AutomationRunData.ProjectId,
+        version.referencedObject,
+        SpeckleClient.Account.token,
+        null,
+        cancellationToken
+      )
+      .ConfigureAwait(false);
+
+    Console.WriteLine($"It took {Elapsed.TotalSeconds} seconds to receive the speckle version {versionId}");
+    return rootObject;
+  }
+
+  /// <summary>
+  /// Creates new version in the project.
+  /// </summary>
+  /// <param name="rootObject">Object to send to project.</param>
+  /// <param name="model">The model to create the version under</param>
+  /// <param name="versionMessage">Version message.</param>
+  /// <param name="cancellationToken">Version message.</param>
+  /// <returns>Version id.</returns>
+  /// <exception cref="SpeckleException"> Throws if given model name is as same as with model name in automation run data.
+  /// The reason is to prevent circular run loop in automation.</exception>
+  public async Task<Version> CreateNewVersionInProject(
+    Base rootObject,
+    Model model,
+    string versionMessage = "",
+    CancellationToken cancellationToken = default
+  )
+  {
+    // Confirm target branch is not the same as source branch
+    foreach (var trigger in AutomationRunData.Triggers)
+    {
+      if (trigger.Payload.ModelId == model.id)
+      {
+        throw new SpeckleException(
+          $"""
+          The target model: {model.name} ({model.id}) cannot match the model
+           that triggered this automation:
+           {trigger.Payload.ModelId}
+          """
+        );
+      }
+    }
+
+    var (rootObjectId, _) = await operations
+      .Send2(
+        SpeckleClient.ServerUrl,
+        AutomationRunData.ProjectId,
+        SpeckleClient.Account.token,
+        rootObject,
+        null,
+        cancellationToken
+      )
+      .ConfigureAwait(false);
+
+    var newVersion = await SpeckleClient
+      .Version.Create(
+        new CreateVersionInput(rootObjectId, model.id, AutomationRunData.ProjectId, versionMessage),
+        cancellationToken
+      )
+      .ConfigureAwait(false);
+
+    AutomationResult.ResultVersions.Add(newVersion.id);
+
+    return newVersion;
+  }
+
+  /// <summary>
+  /// Set context view for automation result view.
+  /// </summary>
+  /// <param name="resourceIds"> Resource contexts to bind into view.</param>
+  /// <param name="includeSourceModelVersion"> Whether bind source version into result view or not.</param>
+  /// <exception cref="SpeckleException"> Throws if there is no context to create result view.</exception>
+  [MemberNotNull(nameof(ContextView))]
+  [AutoInterfaceIgnore] //Ignore so we can explicitly add the MemberNotNull attibute to the interface method
+  public void SetContextView(IReadOnlyCollection<string>? resourceIds = null, bool includeSourceModelVersion = true)
+  {
+    List<string> linkResources = new();
+    if (includeSourceModelVersion)
+    {
+      foreach (var trigger in AutomationRunData.Triggers)
+      {
+        switch (trigger)
+        {
+          case VersionCreationTrigger versionCreationTrigger:
+          {
+            linkResources.Add($"{versionCreationTrigger.Payload.ModelId}@{versionCreationTrigger.Payload.VersionId}");
+            break;
+          }
+          default:
+          {
+            throw new SpeckleException($"Could not link resource specified by {trigger.TriggerType} trigger");
+          }
+        }
+      }
+    }
+
+    if (resourceIds is not null)
+    {
+      linkResources.AddRange(resourceIds);
+    }
+
+    if (linkResources.Count == 0)
+    {
+      throw new SpeckleException("We do not have enough resource ids to compose a context view");
+    }
+
+    ContextView = $"/projects/{AutomationRunData.ProjectId}/models/{string.Join(",", linkResources)}";
+  }
+
+  public async Task ReportRunStatus()
+  {
+    ObjectResults? objectResults = null;
+    if (RunStatus is "SUCCEEDED" or "FAILED")
+    {
+      objectResults = new ObjectResults
+      {
+        Version = 2,
+        Values = new ObjectResultValues
+        {
+          BlobIds = AutomationResult.Blobs,
+          ObjectResults = AutomationResult.ObjectResults,
+        },
+      };
+    }
+
+    //language=graphql
+    const string QUERY = """
+      mutation AutomateFunctionRunStatusReport($projectId: String!, $functionRunId: String!, $status: AutomateRunStatus!, $statusMessage: String, $results: JSONObject, $contextView: String) {
+        automateFunctionRunStatusReport(
+          input: {projectId: $projectId, functionRunId: $functionRunId, status: $status, statusMessage: $statusMessage, contextView: $contextView, results: $results}
+        )
+      }
+      """;
+    GraphQLRequest request = new()
+    {
+      Query = QUERY,
+      Variables = new
+      {
+        projectId = AutomationRunData.ProjectId,
+        functionRunId = AutomationRunData.FunctionRunId,
+        status = RunStatus,
+        statusMessage = AutomationResult.StatusMessage,
+        contextView = ContextView,
+        results = objectResults,
+      },
+    };
+    await SpeckleClient.ExecuteGraphQLRequest<Dictionary<string, object>>(request).ConfigureAwait(false);
+  }
+
+  /// <summary>
+  /// Stores result file in automation result. It will be available to download on Frontend if added.
+  /// </summary>
+  /// <param name="filePath"> File path to store.</param>
+  /// <exception cref="FileNotFoundException"> Throws if given file path is not exist.</exception>
+  /// <exception cref="SpeckleException"> Throws if upload requests return no result.</exception>
+  public async Task StoreFileResult(string filePath)
+  {
+    if (!File.Exists(filePath))
+    {
+      throw new FileNotFoundException("The given file path doesn't exist", fileName: filePath);
+    }
+
+    using MultipartFormDataContent formData = new();
+    FileStream fileStream = new(filePath, FileMode.Open, FileAccess.Read);
+    using StreamContent streamContent = new(fileStream);
+    formData.Add(streamContent, "files", Path.GetFileName(filePath));
+    HttpResponseMessage request = await SpeckleClient
+      .GQLClient.HttpClient.PostAsync(
+        new Uri(AutomationRunData.SpeckleServerUrl, $"api/stream/{AutomationRunData.ProjectId}/blob"),
+        formData
+      )
+      .ConfigureAwait(false);
+    request.EnsureSuccessStatusCode();
+    string responseString = await request.Content.ReadAsStringAsync().ConfigureAwait(false);
+    Console.WriteLine("RESPONSE - " + responseString);
+    BlobUploadResponse uploadResponse = JsonConvert.DeserializeObject<BlobUploadResponse>(responseString);
+    if (uploadResponse.UploadResults.Count != 1)
+    {
+      throw new SpeckleException("Expected one upload result.");
+    }
+
+    AutomationResult.Blobs.AddRange(uploadResponse.UploadResults.Select(r => r.BlobId));
+  }
+
+  private void MarkRun(AutomationStatus status, string? statusMessage)
+  {
+    double duration = Elapsed.TotalSeconds;
+    AutomationResult.StatusMessage = statusMessage;
+    string statusValue = AutomationStatusMapping.Get(status);
+    AutomationResult.RunStatus = statusValue;
+    AutomationResult.Elapsed = duration;
+
+    string msg = $"Automation run {statusValue} after {duration} seconds.";
+    if (statusMessage is not null)
+    {
+      msg += $"\n{statusMessage}";
+    }
+
+    Console.WriteLine(msg);
+  }
+
+  public void MarkRunFailed(string statusMessage) => MarkRun(AutomationStatus.Failed, statusMessage);
+
+  public void MarkRunException(string? statusMessage) => MarkRun(AutomationStatus.Exception, statusMessage);
+
+  public void MarkRunSuccess(string? statusMessage) => MarkRun(AutomationStatus.Succeeded, statusMessage);
+
+  /// <summary>
+  /// Add a new error case to the run results.
+  /// </summary>
+  /// <param name="category">A short tag for the error type.</param>
+  /// <param name="affectedObjects">A list of objects that are causing the result.</param>
+  /// <param name="message">Optional error message.</param>
+  /// <param name="metadata">User provided metadata key value pairs.</param>
+  /// <param name="visualOverrides">Case specific 3D visual overrides.</param>
+  /// <exception cref="ArgumentException">Throws if the provided <paramref name="affectedObjects"/> input is empty.</exception>
+  public void AttachErrorToObjects(
+    string category,
+    IReadOnlyCollection<Base> affectedObjects,
+    string? message = null,
+    Dictionary<string, object>? metadata = null,
+    Dictionary<string, object>? visualOverrides = null
+  ) => AttachResultToObjects(ObjectResultLevel.Error, category, affectedObjects, message, metadata, visualOverrides);
+
+  /// <summary>
+  /// Add a new warning case to the run results.
+  /// </summary>
+  /// <inheritdoc cref="AttachErrorToObjects"/>
+  public void AttachWarningToObjects(
+    string category,
+    IReadOnlyCollection<Base> affectedObjects,
+    string? message = null,
+    Dictionary<string, object>? metadata = null,
+    Dictionary<string, object>? visualOverrides = null
+  ) => AttachResultToObjects(ObjectResultLevel.Warning, category, affectedObjects, message, metadata, visualOverrides);
+
+  /// <summary>
+  /// Add a new info case to the run results.
+  /// </summary>
+  /// <inheritdoc cref="AttachErrorToObjects"/>
+  public void AttachInfoToObjects(
+    string category,
+    IReadOnlyCollection<Base> affectedObjects,
+    string? message = null,
+    Dictionary<string, object>? metadata = null,
+    Dictionary<string, object>? visualOverrides = null
+  ) => AttachResultToObjects(ObjectResultLevel.Info, category, affectedObjects, message, metadata, visualOverrides);
+
+  /// <summary>
+  /// Add a new success case to the run results.
+  /// </summary>
+  /// <inheritdoc cref="AttachErrorToObjects"/>
+  public void AttachSuccessToObjects(
+    string category,
+    IReadOnlyCollection<Base> affectedObjects,
+    string? message = null,
+    Dictionary<string, object>? metadata = null,
+    Dictionary<string, object>? visualOverrides = null
+  ) => AttachResultToObjects(ObjectResultLevel.Success, category, affectedObjects, message, metadata, visualOverrides);
+
+  /// <summary>
+  /// Add a new case to the run results.
+  /// </summary>
+  /// <param name="level">The level assigned to this result.</param>
+  /// <inheritdoc cref="AttachErrorToObjects"/>
+  public void AttachResultToObjects(
+    ObjectResultLevel level,
+    string category,
+    IReadOnlyCollection<Base> affectedObjects,
+    string? message = null,
+    Dictionary<string, object>? metadata = null,
+    Dictionary<string, object>? visualOverrides = null
+  )
+  {
+    if (affectedObjects.Count == 0)
+    {
+      throw new ArgumentException($"Need at least one affected object to report a(n) {level}");
+    }
+
+    string levelString = ObjectResultLevelMapping.Get(level);
+    Dictionary<string, string?> ids = affectedObjects.ToDictionary(
+      x => x.id.NotNull($"You can only attach {level} results to objects with an id"),
+      x => x.applicationId
+    );
+
+    Console.WriteLine($"Created new {levelString.ToUpper()} category: {category} caused by: {message}");
+
+    ResultCase resultCase = new()
+    {
+      Category = category,
+      Level = levelString,
+      ObjectAppIds = ids,
+      Message = message,
+      Metadata = metadata,
+      VisualOverrides = visualOverrides,
+    };
+
+    AutomationResult.ObjectResults.Add(resultCase);
+  }
+}
+
+public partial interface IAutomationContext
+{
+  [MemberNotNull(nameof(ContextView))]
+  public void SetContextView(IReadOnlyCollection<string>? resourceIds = null, bool includeSourceModelVersion = true);
+}

src/Speckle.Automate.Sdk/DataAnnotations/SecretAttribute.cs

@@ -0,0 +1,7 @@
+namespace Speckle.Automate.Sdk.DataAnnotations;
+
+/// <summary>
+/// If specified, the given function input will be redacted in all contexts.
+/// </summary>
+[AttributeUsage(AttributeTargets.All)]
+public sealed class SecretAttribute : Attribute { }

src/Speckle.Automate.Sdk/Runner.cs

@@ -0,0 +1,195 @@
+using System.CommandLine;
+using System.Diagnostics.CodeAnalysis;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Schema;
+using Newtonsoft.Json.Schema.Generation;
+using Newtonsoft.Json.Serialization;
+using Speckle.Automate.Sdk.DataAnnotations;
+using Speckle.Automate.Sdk.Schema;
+using Speckle.InterfaceGenerator;
+using Speckle.Sdk;
+
+namespace Speckle.Automate.Sdk;
+
+/// <summary>
+/// Provides mechanisms to execute any function that conforms to the AutomateFunction "interface"
+/// </summary>
+[GenerateAutoInterface(VisibilityModifier = "public")]
+internal class AutomationRunner(IAutomationContextFactory contextFactory) : IAutomationRunner
+{
+  [SuppressMessage("Design", "CA1031:Do not catch general exception types")]
+  public async Task<IAutomationContext> RunFunction<TInput>(
+    Func<IAutomationContext, TInput, Task> automateFunction,
+    AutomationRunData automationRunData,
+    string speckleToken,
+    TInput inputs
+  )
+    where TInput : struct
+  {
+    var automationContext = await contextFactory.Initialize(automationRunData, speckleToken).ConfigureAwait(false);
+
+    try
+    {
+      await automateFunction.Invoke(automationContext, inputs).ConfigureAwait(false);
+      if (automationContext.RunStatus is not ("FAILED" or "SUCCEEDED"))
+      {
+        automationContext.MarkRunSuccess(
+          "WARNING: Automate assumed a success status, but it was not marked as so by the function."
+        );
+      }
+    }
+    catch (Exception ex) when (!ex.IsFatal())
+    {
+      Console.WriteLine(ex.ToString());
+      automationContext.MarkRunException("Function error. Check the automation run logs for details.");
+    }
+    finally
+    {
+      if (automationContext.ContextView is null)
+      {
+        automationContext.SetContextView();
+      }
+
+      await automationContext.ReportRunStatus().ConfigureAwait(false);
+    }
+    return automationContext;
+  }
+
+  public async Task<IAutomationContext> RunFunction(
+    Func<IAutomationContext, Task> automateFunction,
+    AutomationRunData automationRunData,
+    string speckleToken
+  ) =>
+    await RunFunction(
+        async (context, _) => await automateFunction(context).ConfigureAwait(false),
+        automationRunData,
+        speckleToken,
+        new Fake()
+      )
+      .ConfigureAwait(false);
+
+  private struct Fake { }
+
+  /// <summary>
+  /// Main entrypoint to execute an Automate function with no input data
+  /// </summary>
+  /// <param name="args">The command line arguments passed into the function by automate</param>
+  /// <param name="automateFunction">The automate function to execute</param>
+  /// <remarks>This should always be called in your own functions, as it contains the logic to trigger the function automatically.</remarks>
+  public async Task<int> Main(string[] args, Func<IAutomationContext, Task> automateFunction)
+  {
+    return await Main(
+        args,
+        async (IAutomationContext context, Fake _) => await automateFunction(context).ConfigureAwait(false)
+      )
+      .ConfigureAwait(false);
+  }
+
+  /// <summary>
+  /// Main entrypoint to execute an Automate function with input data of type <typeparamref name="TInput"/>.
+  /// </summary>
+  /// <param name="args">The command line arguments passed into the function by automate</param>
+  /// <param name="automateFunction">The automate function to execute</param>
+  /// <typeparam name="TInput">The provided input data</typeparam>
+  /// <remarks>This should always be called in your own functions, as it contains the logic to trigger the function automatically.</remarks>
+  public async Task<int> Main<TInput>(string[] args, Func<IAutomationContext, TInput, Task> automateFunction)
+    where TInput : struct
+  {
+    Argument<string> pathArg = new(name: "Input Path", description: "A file path to retrieve function inputs");
+    RootCommand rootCommand = new();
+
+    // a stupid hack to be able to exit with a specific integer exit code
+    // read more at https://github.com/dotnet/command-line-api/issues/1570
+    var exitCode = 0;
+
+    rootCommand.AddArgument(pathArg);
+    rootCommand.SetHandler(
+      async inputPath =>
+      {
+        try
+        {
+          FunctionRunData<TInput> data = FunctionRunDataParser.FromPath<TInput>(inputPath);
+
+          var context = await RunFunction(
+              automateFunction,
+              data.AutomationRunData,
+              data.SpeckleToken,
+              data.FunctionInputs
+            )
+            .ConfigureAwait(false);
+
+          if (context.RunStatus is "EXCEPTION")
+          {
+            exitCode = 1;
+          }
+        }
+        catch (Exception)
+        {
+          exitCode = 1;
+          throw;
+        }
+      },
+      pathArg
+    );
+
+    Argument<string> schemaFilePathArg = new(
+      name: "Function inputs file path",
+      description: "A token to talk to the Speckle server with"
+    );
+
+    Command generateSchemaCommand = new("generate-schema", "Generate JSON schema for the function inputs");
+    generateSchemaCommand.AddArgument(schemaFilePathArg);
+    generateSchemaCommand.SetHandler(
+      schemaFilePath =>
+      {
+        try
+        {
+          JSchemaGenerator generator = new() { ContractResolver = new CamelCasePropertyNamesContractResolver() };
+          generator.GenerationProviders.Add(new SpeckleSecretProvider());
+          JSchema schema = generator.Generate(typeof(TInput));
+          schema.ToString(SchemaVersion.Draft2019_09);
+          File.WriteAllText(schemaFilePath, schema.ToString());
+        }
+        catch (Exception)
+        {
+          exitCode = 1;
+          throw;
+        }
+      },
+      schemaFilePathArg
+    );
+    rootCommand.Add(generateSchemaCommand);
+
+    await rootCommand.InvokeAsync(args).ConfigureAwait(false);
+
+    // if we've gotten this far, the execution should technically be completed as expected
+    // thus exiting with 0 is the semantically correct thing to do
+    return exitCode;
+  }
+}
+
+internal sealed class SpeckleSecretProvider : JSchemaGenerationProvider
+{
+  public override JSchema? GetSchema(JSchemaTypeGenerationContext context)
+  {
+    var attributes = context.MemberProperty?.AttributeProvider?.GetAttributes(false) ?? new List<Attribute>();
+    var isSecretString = attributes.Any(att => att is SecretAttribute);
+
+    if (isSecretString)
+    {
+      return CreateSchemaWithWriteOnly(context.ObjectType, context.Required);
+    }
+
+    return null;
+  }
+
+  private static JSchema CreateSchemaWithWriteOnly(Type type, Required required)
+  {
+    JSchemaGenerator generator = new();
+    JSchema schema = generator.Generate(type, required != Required.Always);
+
+    schema.WriteOnly = true;
+
+    return schema;
+  }
+}

src/Speckle.Automate.Sdk/Schema/AutomationResult.cs

@@ -0,0 +1,12 @@
+namespace Speckle.Automate.Sdk.Schema;
+
+public class AutomationResult
+{
+  public double Elapsed { get; set; }
+  public string? ResultView { get; set; }
+  public List<string> ResultVersions { get; set; } = new();
+  public List<string> Blobs { get; set; } = new();
+  public string RunStatus { get; set; } = AutomationStatusMapping.Get(AutomationStatus.Running);
+  public string? StatusMessage { get; set; }
+  public List<ResultCase> ObjectResults { get; set; } = new();
+}

src/Speckle.Automate.Sdk/Schema/AutomationRunData.cs

@@ -0,0 +1,28 @@
+using System.Text.Json.Serialization;
+using Speckle.Automate.Sdk.Schema.Triggers;
+
+namespace Speckle.Automate.Sdk.Schema;
+
+///<summary>
+/// Values of the project, model and automation that triggered this function run.
+///</summary>
+public readonly struct AutomationRunData
+{
+  [JsonRequired]
+  public required string ProjectId { get; init; }
+
+  [JsonRequired]
+  public required Uri SpeckleServerUrl { get; init; }
+
+  [JsonRequired]
+  public required string AutomationId { get; init; }
+
+  [JsonRequired]
+  public required string AutomationRunId { get; init; }
+
+  [JsonRequired]
+  public required string FunctionRunId { get; init; }
+
+  [JsonRequired]
+  public required List<VersionCreationTrigger> Triggers { get; init; }
+}

src/Speckle.Automate.Sdk/Schema/AutomationStatus.cs

@@ -0,0 +1,13 @@
+namespace Speckle.Automate.Sdk.Schema;
+
+///<summary>
+/// Set the status of the automation.
+///</summary>
+public enum AutomationStatus
+{
+  Initializing,
+  Running,
+  Failed,
+  Succeeded,
+  Exception,
+}

src/Speckle.Automate.Sdk/Schema/AutomationStatusMapping.cs

@@ -0,0 +1,21 @@
+namespace Speckle.Automate.Sdk.Schema;
+
+public abstract class AutomationStatusMapping
+{
+  private const string INITIALIZING = "INITIALIZING";
+  private const string RUNNING = "RUNNING";
+  private const string FAILED = "FAILED";
+  private const string SUCCEEDED = "SUCCEEDED";
+  private const string EXCEPTION = "EXCEPTION";
+
+  public static string Get(AutomationStatus status) =>
+    status switch
+    {
+      AutomationStatus.Running => RUNNING,
+      AutomationStatus.Failed => FAILED,
+      AutomationStatus.Succeeded => SUCCEEDED,
+      AutomationStatus.Initializing => INITIALIZING,
+      AutomationStatus.Exception => EXCEPTION,
+      _ => throw new ArgumentOutOfRangeException($"Not valid value for enum {status}"),
+    };
+}

src/Speckle.Automate.Sdk/Schema/BlobUploadResponse.cs

@@ -0,0 +1,6 @@
+namespace Speckle.Automate.Sdk.Schema;
+
+public readonly struct BlobUploadResponse
+{
+  public required List<UploadResult> UploadResults { get; init; }
+}

src/Speckle.Automate.Sdk/Schema/FunctionRunData.cs

@@ -0,0 +1,18 @@
+using System.Text.Json.Serialization;
+
+namespace Speckle.Automate.Sdk.Schema;
+
+/// <summary>
+/// Required data to run a function.
+/// </summary>
+/// <typeparam name="T"> Type for <see cref="FunctionInputs"/>.</typeparam>
+public sealed class FunctionRunData<T>
+{
+  [JsonRequired]
+  public required string SpeckleToken { get; init; }
+
+  [JsonRequired]
+  public required AutomationRunData AutomationRunData { get; init; }
+
+  public required T? FunctionInputs { get; init; }
+}

src/Speckle.Automate.Sdk/Schema/FunctionRunDataParser.cs

@@ -0,0 +1,52 @@
+using System.Text.Json;
+
+namespace Speckle.Automate.Sdk.Schema;
+
+public static class FunctionRunDataParser
+{
+  private static readonly JsonSerializerOptions s_jsonSerializerSettings = new()
+  {
+    PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
+  };
+
+  /// <summary>
+  /// Function run data parser from json file path./>
+  /// </summary>
+  /// <param name="inputLocation"> Path to retrieve function run data.</param>
+  /// <typeparam name="T"> Type for function inputs.</typeparam>
+  /// <returns>The data to be able to run function.</returns>
+  /// <exception cref="JsonException">Json was not valid</exception>
+  /// <exception cref="FileNotFoundException"> Throws unless file exists.</exception>
+  public static FunctionRunData<T> FromPath<T>(string inputLocation)
+  {
+    string inputJsonString = ReadInputData(inputLocation);
+    //It's important to use System.Text.Json here. The template FunctionInputs are decorated with STJ attributes
+    FunctionRunData<T>? functionRunData = JsonSerializer.Deserialize<FunctionRunData<T>>(
+      inputJsonString,
+      s_jsonSerializerSettings
+    );
+
+    if (functionRunData is null)
+    {
+      throw new JsonException($"Function run data couldn't deserialized at {inputLocation}");
+    }
+
+    return functionRunData;
+  }
+
+  /// <summary>
+  /// Read text from file.
+  /// </summary>
+  /// <param name="inputLocation"> Path to check file is exist.</param>
+  /// <returns>Text in file.</returns>
+  /// <exception cref="FileNotFoundException"> Throws unless file exists.</exception>
+  private static string ReadInputData(string inputLocation)
+  {
+    if (!File.Exists(inputLocation))
+    {
+      throw new FileNotFoundException($"Cannot find the function inputs file at {inputLocation}");
+    }
+
+    return File.ReadAllText(inputLocation);
+  }
+}

src/Speckle.Automate.Sdk/Schema/ObjectResultLevel.cs

@@ -0,0 +1,9 @@
+namespace Speckle.Automate.Sdk.Schema;
+
+public enum ObjectResultLevel
+{
+  Success,
+  Info,
+  Warning,
+  Error,
+}

src/Speckle.Automate.Sdk/Schema/ObjectResultLevelMapping.cs

@@ -0,0 +1,19 @@
+namespace Speckle.Automate.Sdk.Schema;
+
+public abstract class ObjectResultLevelMapping
+{
+  private const string SUCCESS = "SUCCESS";
+  private const string INFO = "INFO";
+  private const string WARNING = "WARNING";
+  private const string ERROR = "ERROR";
+
+  public static string Get(ObjectResultLevel level) =>
+    level switch
+    {
+      ObjectResultLevel.Error => ERROR,
+      ObjectResultLevel.Warning => WARNING,
+      ObjectResultLevel.Info => INFO,
+      ObjectResultLevel.Success => SUCCESS,
+      _ => throw new ArgumentOutOfRangeException($"Not valid value for enum {level}"),
+    };
+}

src/Speckle.Automate.Sdk/Schema/ObjectResultValues.cs

@@ -0,0 +1,7 @@
+namespace Speckle.Automate.Sdk.Schema;
+
+public readonly struct ObjectResultValues
+{
+  public required List<ResultCase> ObjectResults { get; init; }
+  public required List<string> BlobIds { get; init; }
+}

src/Speckle.Automate.Sdk/Schema/ObjectResults.cs

@@ -0,0 +1,7 @@
+namespace Speckle.Automate.Sdk.Schema;
+
+public readonly struct ObjectResults
+{
+  public int Version { get; init; }
+  public ObjectResultValues Values { get; init; }
+}

src/Speckle.Automate.Sdk/Schema/ResultCase.cs

@@ -0,0 +1,11 @@
+namespace Speckle.Automate.Sdk.Schema;
+
+public readonly struct ResultCase
+{
+  public required string Category { get; init; }
+  public required string Level { get; init; }
+  public required Dictionary<string, string?> ObjectAppIds { get; init; }
+  public required string? Message { get; init; }
+  public required Dictionary<string, object>? Metadata { get; init; }
+  public required Dictionary<string, object>? VisualOverrides { get; init; }
+}

src/Speckle.Automate.Sdk/Schema/Triggers/AutomationRunTriggerBase.cs

@@ -0,0 +1,6 @@
+namespace Speckle.Automate.Sdk.Schema.Triggers;
+
+public abstract class AutomationRunTriggerBase
+{
+  public required string TriggerType { get; init; }
+}

src/Speckle.Automate.Sdk/Schema/Triggers/VersionCreationTrigger.cs

@@ -0,0 +1,36 @@
+using System.Diagnostics.CodeAnalysis;
+using System.Text.Json.Serialization;
+
+namespace Speckle.Automate.Sdk.Schema.Triggers;
+
+/// <summary>
+/// Represents a single version creation trigger for the automation run.
+/// </summary>
+public sealed class VersionCreationTrigger : AutomationRunTriggerBase
+{
+  public const string VERSION_CREATION_TRIGGER_TYPE = "versionCreation";
+
+  [JsonRequired]
+  public required VersionCreationTriggerPayload Payload { get; init; }
+
+  public VersionCreationTrigger() { }
+
+  [SetsRequiredMembers]
+  public VersionCreationTrigger(string modelId, string versionId)
+  {
+    Payload = new() { ModelId = modelId, VersionId = versionId };
+    TriggerType = VERSION_CREATION_TRIGGER_TYPE;
+  }
+}
+
+/// <summary>
+/// Represents the version creation trigger payload.
+/// </summary>
+public sealed record VersionCreationTriggerPayload
+{
+  [JsonRequired]
+  public required string ModelId { get; init; }
+
+  [JsonRequired]
+  public required string VersionId { get; init; }
+}

src/Speckle.Automate.Sdk/Schema/UploadResult.cs

@@ -0,0 +1,8 @@
+namespace Speckle.Automate.Sdk.Schema;
+
+public readonly struct UploadResult
+{
+  public required string BlobId { get; init; }
+  public required string FileName { get; init; }
+  public required int UploadStatus { get; init; }
+}

src/Speckle.Automate.Sdk/ServiceRegistration.cs

@@ -0,0 +1,50 @@
+using System.Reflection;
+using Microsoft.Extensions.DependencyInjection;
+using Speckle.Objects.Geometry;
+using Speckle.Sdk;
+using Speckle.Sdk.Models;
+using Speckle.Sdk.Serialisation.V2;
+
+namespace Speckle.Automate.Sdk;
+
+public static class ServiceRegistration
+{
+  /// <summary>
+  /// Sets-up the serviceCollection with all the services in Speckle.Automate.Sdk and Speckle.Sdk
+  /// </summary>
+  /// <param name="serviceCollection"></param>
+  /// <returns></returns>
+  public static IServiceCollection AddAutomateSdk(this IServiceCollection serviceCollection)
+  {
+    var executingAssembly = Assembly.GetExecutingAssembly().GetName();
+    var speckleAssembly = typeof(Base).Assembly.GetName();
+    AddAutomateSdk(
+      serviceCollection,
+      new SpeckleSdkOptions(
+        new(executingAssembly.FullName, "automatefunction"),
+        executingAssembly.Version?.ToString() ?? "Unknown",
+        speckleAssembly.Version?.ToString(),
+        [typeof(Base).Assembly, typeof(Point).Assembly]
+      )
+    );
+
+    return serviceCollection;
+  }
+
+  public static IServiceCollection AddAutomateSdk(
+    this IServiceCollection serviceCollection,
+    SpeckleSdkOptions speckleSdkOptions
+  )
+  {
+    serviceCollection.AddSpeckleSdk(speckleSdkOptions);
+
+    //Overwrite the SDK's default IDeserializeProcessFactory to ensure SQLite is not used to cache objects
+    serviceCollection.AddTransient<IDeserializeProcessFactory, DeserializeProcessFactoryNoCache>();
+
+    //Add automate assembly services
+    serviceCollection.AddTransient<IAutomationContextFactory, AutomationContextFactory>();
+    serviceCollection.AddTransient<IAutomationRunner, AutomationRunner>();
+
+    return serviceCollection;
+  }
+}

src/Speckle.Automate.Sdk/Speckle.Automate.Sdk.csproj

@@ -0,0 +1,28 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup Label="Compiler Properties">
+    <TargetFrameworks>netstandard2.0;net8.0</TargetFrameworks>
+  </PropertyGroup>
+  <PropertyGroup Label="Nugetspec Package Properties">
+    <PackageId>Speckle.Automate.Sdk</PackageId>
+    <Description>Speckle Automate SDK</Description>
+    <PackageTags>$(PackageTags) speckle automation</PackageTags>
+  </PropertyGroup>
+  <PropertyGroup Label="Nuget Package Properties">
+    <IsPackable>true</IsPackable>
+    <IncludeSymbols>true</IncludeSymbols>
+    <SymbolPackageFormat>snupkg</SymbolPackageFormat>
+  </PropertyGroup>
+  <ItemGroup Label="Expose internals to test projects">
+    <InternalsVisibleTo Include="Speckle.Automate.Sdk.Tests.Integration" />
+  </ItemGroup>
+  <ItemGroup Label="Package References">
+    <PackageReference Include="Newtonsoft.Json.Schema" />
+    <PackageReference Include="System.CommandLine" NoWarn="NU5104" />
+  </ItemGroup>
+  <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0'">
+    <PackageReference Include="System.Text.Json" />
+  </ItemGroup>
+  <ItemGroup Label="Project References">
+    <ProjectReference Include="..\Speckle.Objects\Speckle.Objects.csproj" />
+  </ItemGroup>
+</Project>

src/Speckle.Automate.Sdk/Test/TestAutomateEnvironment.cs

@@ -0,0 +1,79 @@
+using Speckle.Newtonsoft.Json;
+using Speckle.Sdk;
+
+namespace Speckle.Automate.Sdk.Test;
+
+public class TestAppSettings
+{
+  public string? SpeckleToken { get; set; }
+  public string? SpeckleServerUrl { get; set; }
+  public string? SpeckleProjectId { get; set; }
+  public string? SpeckleAutomationId { get; set; }
+}
+
+public static class TestAutomateEnvironment
+{
+  public static TestAppSettings? AppSettings { get; private set; }
+
+  private static string GetEnvironmentVariable(string environmentVariableName)
+  {
+    var value = TryGetEnvironmentVariable(environmentVariableName);
+
+    if (value is null)
+    {
+      throw new SpeckleException($"Cannot run tests without a {environmentVariableName} environment variable");
+    }
+
+    return value;
+  }
+
+  private static string? TryGetEnvironmentVariable(string environmentVariableName)
+  {
+    return Environment.GetEnvironmentVariable(environmentVariableName);
+  }
+
+  private static TestAppSettings? GetAppSettings()
+  {
+    if (AppSettings != null)
+    {
+      return AppSettings;
+    }
+
+    var path = "./appsettings.json";
+    var json = File.ReadAllText(path);
+
+    var appSettings = JsonConvert.DeserializeObject<TestAppSettings>(json);
+
+    AppSettings = appSettings;
+
+    return AppSettings;
+  }
+
+  public static string GetSpeckleToken()
+  {
+    return GetAppSettings()?.SpeckleToken ?? GetEnvironmentVariable("SPECKLE_TOKEN");
+  }
+
+  public static Uri GetSpeckleServerUrl()
+  {
+    var urlString =
+      GetAppSettings()?.SpeckleServerUrl ?? TryGetEnvironmentVariable("SPECKLE_SERVER_URL") ?? "http://127.0.0.1:3000";
+
+    return new Uri(urlString);
+  }
+
+  public static string GetSpeckleProjectId()
+  {
+    return GetAppSettings()?.SpeckleProjectId ?? GetEnvironmentVariable("SPECKLE_PROJECT_ID");
+  }
+
+  public static string GetSpeckleAutomationId()
+  {
+    return GetAppSettings()?.SpeckleAutomationId ?? GetEnvironmentVariable("SPECKLE_AUTOMATION_ID");
+  }
+
+  public static void Clear()
+  {
+    AppSettings = null;
+  }
+}

src/Speckle.Automate.Sdk/Test/TestAutomateUtils.cs

@@ -0,0 +1,90 @@
+using GraphQL;
+using Speckle.Automate.Sdk.Schema;
+using Speckle.Automate.Sdk.Schema.Triggers;
+using Speckle.Newtonsoft.Json;
+using Speckle.Sdk.Api;
+using Speckle.Sdk.Api.GraphQL.Models.Responses;
+
+namespace Speckle.Automate.Sdk.Test;
+
+internal class TestAutomationRun
+{
+  [JsonRequired]
+  public required string AutomationRunId { get; init; }
+
+  [JsonRequired]
+  public required string FunctionRunId { get; init; }
+
+  [JsonRequired]
+  public required IReadOnlyList<TestAutomationRunTrigger> Triggers { get; init; }
+}
+
+internal class TestAutomationRunTrigger : AutomationRunTriggerBase
+{
+  /// <remarks>This should really be a TestAutomationRunTriggerPayload, but right now, they look the samee</remarks>
+  public required VersionCreationTriggerPayload Payload { get; init; }
+}
+
+public static class TestAutomateUtils
+{
+  public static async Task<AutomationRunData> CreateTestRun(
+    IClient speckleClient,
+    CancellationToken cancellationToken = default
+  )
+  {
+    //language=graphql
+    const string QUERY = """
+      mutation Mutation($projectId: ID!, $automationId: ID!) {
+        data:projectMutations {
+          data:automationMutations(projectId: $projectId) {
+            data:createTestAutomationRun(automationId: $automationId) {
+              automationRunId
+              functionRunId
+              triggers {
+                payload {
+                  modelId
+                  versionId
+                }
+                triggerType
+              }
+            }
+          }
+        }
+      }
+      """;
+
+    GraphQLRequest request = new(
+      query: QUERY,
+      variables: new
+      {
+        automationId = TestAutomateEnvironment.GetSpeckleAutomationId(),
+        projectId = TestAutomateEnvironment.GetSpeckleProjectId(),
+      }
+    );
+
+    var res = await speckleClient
+      .ExecuteGraphQLRequest<RequiredResponse<RequiredResponse<RequiredResponse<TestAutomationRun>>>>(
+        request,
+        cancellationToken
+      )
+      .ConfigureAwait(false);
+
+    var runData = res.data.data.data;
+    var triggerData = runData.Triggers[0].Payload;
+
+    string modelId = triggerData.ModelId;
+    string versionId = triggerData.VersionId;
+
+    var data = new AutomationRunData()
+    {
+      ProjectId = TestAutomateEnvironment.GetSpeckleProjectId(),
+      SpeckleServerUrl = TestAutomateEnvironment.GetSpeckleServerUrl(),
+      AutomationId = TestAutomateEnvironment.GetSpeckleAutomationId(),
+      AutomationRunId = runData.AutomationRunId,
+      FunctionRunId = runData.FunctionRunId,
+      Triggers = [new(modelId: modelId, versionId: versionId)],
+    };
+
+    return data;
+  }
+}

src/Speckle.Automate.Sdk/packages.lock.json

@@ -0,0 +1,618 @@
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+      }
+    }
+  }
+}

src/Speckle.Objects/Annotation/Text.cs

@@ -0,0 +1,68 @@
+using Speckle.Objects.Geometry;
+using Speckle.Sdk.Models;
+
+namespace Speckle.Objects.Annotation;
+
+/// <summary>
+/// Text class for representation in the viewer
+/// </summary>
+[SpeckleType("Objects.Annotation.Text")]
+public class Text : Base
+{
+  /// <summary>
+  /// Plain text, without formatting
+  /// </summary>
+  public required string value { get; set; }
+
+  /// <summary>
+  /// Height in linear units or pixels (if Units.None)
+  /// </summary>
+  public required double height { get; set; }
+
+  /// <summary>
+  /// Units will be 'Units.None' if the text size is defined in pixels (stays the same size
+  /// independently of zooming the model). Default height in pixels is 17px (used for Viewer measurements)
+  /// </summary>
+  public required string units { get; set; }
+
+  /// <summary>
+  /// If true, the text is oriented to face the screen (camera-aligned).
+  /// </summary>
+  public required bool screenOriented { get; set; }
+
+  /// <summary>
+  /// Horizontal alignment: Left, Center or Right
+  /// </summary>
+  public AlignmentHorizontal alignmentH { get; set; }
+
+  /// <summary>
+  /// Vertical alignment: Top, Center or Bottom
+  /// </summary>
+  public AlignmentVertical alignmentV { get; set; }
+
+  /// <summary>
+  /// Plane axis vectors will be ignored if screenOriented is true
+  /// </summary>
+  public required Plane plane { get; set; }
+
+  /// <summary>
+  /// Maximum width of the text field (in 'units').
+  /// Text will be split into lines (wrapped) to fit into the width.
+  /// null, if text should not be wrapped.
+  /// </summary>
+  public double? maxWidth { get; set; }
+}
+
+public enum AlignmentHorizontal
+{
+  Left,
+  Center,
+  Right,
+}
+
+public enum AlignmentVertical
+{
+  Top,
+  Center,
+  Bottom,
+}

src/Speckle.Objects/Geometry/Plane.cs

@@ -68,7 +68,6 @@ public class Plane : Base, ITransformable<Plane>
   /// Returns the values of this <see cref="Plane"/> as a list of numbers
   /// </summary>
   /// <returns>A list of values representing the Plane.</returns>
-
   public List<double> ToList()
   {
     var list = new List<double>();

src/Speckle.Objects/Geometry/Surface.cs

@@ -147,7 +147,6 @@ public class Surface : Base, IHasBoundingBox, IHasArea, ITransformable<Surface>
   /// </summary>
   /// <returns>A 2-dimensional array representing this <see cref="Surface"/>s control points.</returns>
   /// <remarks>The ControlPoints will be ordered following directions "[u][v]"</remarks>
-
   public List<List<ControlPoint>> GetControlPoints()
   {
     var matrix = new List<List<ControlPoint>>();

src/Speckle.Objects/Other/LevelProxy.cs

@@ -0,0 +1,20 @@
+using Speckle.Objects.Data;
+using Speckle.Sdk.Models;
+using Speckle.Sdk.Models.Proxies;
+
+namespace Speckle.Objects.Other;
+
+/// <summary>
+/// Proxy for levels as DataObject value.
+/// <remarks> These proxy lives in Objects library because it depends on DataObject</remarks>
+/// </summary>
+[SpeckleType("Objects.Other.LevelProxy")]
+public class LevelProxy : Base, IProxyCollection
+{
+  /// <summary>
+  /// The list of application ids of objects that use this level
+  /// </summary>
+  public required List<string> objects { get; set; }
+
+  public required DataObject value { get; set; }
+}

src/Speckle.Objects/Other/RenderMaterial.cs

@@ -1,7 +1,6 @@
 using System.Drawing;
 using Speckle.Newtonsoft.Json;
 using Speckle.Sdk.Models;
-using Speckle.Sdk.Models.Proxies;
 
 namespace Speckle.Objects.Other;
 
@@ -39,20 +38,3 @@ public class RenderMaterial : Base
     set => diffuse = value.ToArgb();
   }
 }
-
-/// <summary>
-/// Used to store render material to object relationships in root collections
-/// </summary>
-[SpeckleType("Objects.Other.RenderMaterialProxy")]
-public class RenderMaterialProxy : Base, IProxyCollection
-{
-  /// <summary>
-  /// The list of application ids of objects that use this render material
-  /// </summary>
-  public required List<string> objects { get; set; }
-
-  /// <summary>
-  /// The render material used by <see cref="objects"/>
-  /// </summary>
-  public required RenderMaterial value { get; set; }
-}

src/Speckle.Objects/Other/RenderMaterialProxy.cs

@@ -0,0 +1,22 @@
+using Speckle.Sdk.Models;
+using Speckle.Sdk.Models.Proxies;
+
+namespace Speckle.Objects.Other;
+
+/// <summary>
+/// Used to store render material to object relationships in root collections
+/// <remarks> These proxy lives in Objects library because it depends on RenderMaterial</remarks>
+/// </summary>
+[SpeckleType("Objects.Other.RenderMaterialProxy")]
+public class RenderMaterialProxy : Base, IProxyCollection
+{
+  /// <summary>
+  /// The list of application ids of objects that use this render material
+  /// </summary>
+  public required List<string> objects { get; set; }
+
+  /// <summary>
+  /// The render material used by <see cref="objects"/>
+  /// </summary>
+  public required RenderMaterial value { get; set; }
+}

src/Speckle.Objects/Speckle.Objects.csproj

@@ -1,37 +1,30 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
-  
   <PropertyGroup Label="Compiler Properties">
     <TargetFrameworks>netstandard2.0;net8.0</TargetFrameworks>
     <PolySharpExcludeGeneratedTypes>System.Runtime.CompilerServices.RequiresLocationAttribute</PolySharpExcludeGeneratedTypes>
     <Configurations>Debug;Release;Local</Configurations>
   </PropertyGroup>
-
   <PropertyGroup Label="Nugetspec Package Properties">
     <PackageId>Speckle.Objects</PackageId>
     <Description>Objects is the default object model for Speckle</Description>
     <PackageTags>$(PackageTags) objects</PackageTags>
   </PropertyGroup>
-  
   <PropertyGroup Label="Nuget Package Properties">
     <IsPackable>true</IsPackable>
     <IncludeSymbols>true</IncludeSymbols>
     <SymbolPackageFormat>snupkg</SymbolPackageFormat>
   </PropertyGroup>
-
   <PropertyGroup Label="Analyers">
     <NoWarn>
       $(NoWarn);
       CA1819;CA1008;CA2225;
     </NoWarn>
   </PropertyGroup>
-
   <ItemGroup Label="Expose internals to test projects">
     <InternalsVisibleTo Include="Speckle.Objects.Tests.Unit" />
   </ItemGroup>
-
   <ItemGroup Label="Project References">
     <ProjectReference Include="..\Speckle.Sdk\Speckle.Sdk.csproj" />
   </ItemGroup>
-  
 </Project>

src/Speckle.Objects/packages.lock.json

@@ -472,7 +472,6 @@
         "type": "Project",
         "dependencies": {
           "GraphQL.Client": "[6.0.0, )",
-          "Microsoft.CSharp": "[4.7.0, )",
           "Microsoft.Data.Sqlite": "[7.0.5, )",
           "Microsoft.Extensions.DependencyInjection.Abstractions": "[2.2.0, )",
           "Microsoft.Extensions.Logging": "[2.2.0, )",
@@ -495,12 +494,6 @@
           "System.Reactive": "5.0.0"
         }
       },
-      "Microsoft.CSharp": {
-        "type": "CentralTransitive",
-        "requested": "[4.7.0, )",
-        "resolved": "4.7.0",
-        "contentHash": "pTj+D3uJWyN3My70i2Hqo+OXixq3Os2D1nJ2x92FFo6sk8fYS1m1WLNTs0Dc1uPaViH0YvEEwvzddQ7y4rhXmA=="
-      },
       "Microsoft.Data.Sqlite": {
         "type": "CentralTransitive",
         "requested": "[7.0.5, )",

src/Speckle.Sdk.Dependencies/Collections.cs

@@ -22,23 +22,4 @@ public static class Collections
 public static class EnumerableExtensions
 {
   public static IEnumerable<int> RangeFrom(int from, int to) => Enumerable.Range(from, to - from + 1);
-
-#if NETSTANDARD2_0
-  public static IEnumerable<TSource> DistinctBy<TSource, TKey>(
-    this IEnumerable<TSource> source,
-    Func<TSource, TKey> keySelector
-  )
-  {
-    var keys = new HashSet<TKey>();
-    foreach (var element in source)
-    {
-      if (keys.Contains(keySelector(element)))
-      {
-        continue;
-      }
-      keys.Add(keySelector(element));
-      yield return element;
-    }
-  }
-#endif
 }

src/Speckle.Sdk.Dependencies/Serialization/ChannelLoader.cs

@@ -5,7 +5,7 @@ namespace Speckle.Sdk.Dependencies.Serialization;
 
 public abstract class ChannelLoader<T>(CancellationToken cancellationToken)
 {
-  private const int RECEIVE_CAPACITY = 5000;
+  private const int RECEIVE_CAPACITY = 10000;
 
   private const int HTTP_GET_CHUNK_SIZE = 500;
   private const int MAX_PARALLELISM_HTTP = 4;
@@ -109,6 +109,9 @@ public abstract class ChannelLoader<T>(CancellationToken cancellationToken)
     Exception = ex;
     _channel.Writer.TryComplete(ex);
     //cancel everything!
-    _cts.Cancel();
+    if (!_cts.IsCancellationRequested)
+    {
+      _cts.Cancel();
+    }
   }
 }

src/Speckle.Sdk.Dependencies/Serialization/ChannelSaver.cs

@@ -8,13 +8,13 @@ namespace Speckle.Sdk.Dependencies.Serialization;
 public abstract class ChannelSaver<T>
   where T : IHasByteSize
 {
-  private const int SEND_CAPACITY = 500;
+  private const int SEND_CAPACITY = 10000;
   private const int HTTP_SEND_CHUNK_SIZE = 25_000_000; //bytes
   private static readonly TimeSpan HTTP_BATCH_TIMEOUT = TimeSpan.FromSeconds(2);
   private const int MAX_PARALLELISM_HTTP = 4;
   private const int HTTP_CAPACITY = 500;
-  private const int MAX_CACHE_WRITE_PARALLELISM = 4;
-  private const int MAX_CACHE_BATCH = 500;
+  private const int MAX_CACHE_WRITE_PARALLELISM = 1;
+  private const int MAX_CACHE_BATCH = 1000;
 
   private readonly Channel<T> _checkCacheChannel = Channel.CreateBounded<T>(
     new BoundedChannelOptions(SEND_CAPACITY)
@@ -45,9 +45,9 @@ public abstract class ChannelSaver<T>
         cancellationToken
       )
       .Join()
-      .Batch(cacheBatchSize ?? MAX_CACHE_BATCH)
+      .Batch(cacheBatchSize ?? MAX_CACHE_BATCH, singleReader: true)
       .WithTimeout(HTTP_BATCH_TIMEOUT)
-      .ReadAllConcurrently(maxParallelism ?? MAX_CACHE_WRITE_PARALLELISM, SaveToCache, cancellationToken)
+      .ReadAllConcurrently(MAX_CACHE_WRITE_PARALLELISM, SaveToCache, cancellationToken)
       .ContinueWith(
         t =>
         {
@@ -68,14 +68,15 @@ public abstract class ChannelSaver<T>
         TaskScheduler.Current
       );
 
-  public void Save(T item)
+  public async Task SaveAsync(T item, CancellationToken cancellationToken)
   {
     if (Exception is not null)
     {
       return; //don't save if we're already done through an error
     }
-    // ReSharper disable once MethodSupportsCancellation
-    _checkCacheChannel.Writer.TryWrite(item);
+    //can switch to check then try pattern when back pressure is needed or exceptions are too much
+    //the trees don't need to respond to back pressure
+    await _checkCacheChannel.Writer.WriteAsync(item, cancellationToken).ConfigureAwait(false);
   }
 
   private async Task<IMemoryOwner<T>> SendToServer(IMemoryOwner<T> batch)

src/Speckle.Sdk.Dependencies/Speckle.Sdk.Dependencies.csproj

@@ -1,5 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
   <PropertyGroup Label="Compiler Properties">
     <TargetFrameworks>netstandard2.0;net8.0</TargetFrameworks>
     <Configurations>Debug;Release;Local</Configurations>
@@ -7,30 +6,26 @@
     <ILRepackRenameInternalized>true</ILRepackRenameInternalized>
     <ILRepackMergeDebugSymbols>true</ILRepackMergeDebugSymbols>
   </PropertyGroup>
-  
   <PropertyGroup Label="Nugetspec Package Properties">
     <PackageId>Speckle.Sdk.Dependencies</PackageId>
     <Description>The .NET SDK for Speckle</Description>
     <PackageTags>$(PackageTags) core sdk</PackageTags>
   </PropertyGroup>
-
   <PropertyGroup Label="Nuget Package Properties">
     <IsPackable>true</IsPackable>
     <IncludeSymbols>true</IncludeSymbols>
     <SymbolPackageFormat>snupkg</SymbolPackageFormat>
   </PropertyGroup>
-
   <ItemGroup Label="Package References">
-  <PackageReference Include="ILRepack.FullAuto">
+    <PackageReference Include="ILRepack.FullAuto">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.Extensions.ObjectPool" PrivateAssets="all" />    
+    <PackageReference Include="Microsoft.Extensions.ObjectPool" PrivateAssets="all" />
     <PackageReference Include="Polly" PrivateAssets="all" />
     <PackageReference Include="Polly.Contrib.WaitAndRetry" PrivateAssets="all" />
     <PackageReference Include="Polly.Extensions.Http" PrivateAssets="all" />
     <PackageReference Include="Open.ChannelExtensions" PrivateAssets="all" />
     <PackageReference Include="System.Threading.Channels" PrivateAssets="all" />
-
   </ItemGroup>
 </Project>

src/Speckle.Sdk.Dependencies/SpeckleHttpClientHandler.cs

@@ -41,13 +41,7 @@ internal sealed class SpeckleHttpClientHandler : DelegatingHandler
       activity?.InjectHeaders((k, v) => request.Headers.TryAddWithoutValidation(k, v));
 
       var policyResult = await _resiliencePolicy
-        .ExecuteAndCaptureAsync(
-          ctx =>
-          {
-            return base.SendAsync(request, cancellationToken);
-          },
-          context
-        )
+        .ExecuteAndCaptureAsync(ctx => base.SendAsync(request, cancellationToken), context)
         .ConfigureAwait(false);
       context.TryGetValue("retryCount", out var retryCount);
       activity?.SetTag("retryCount", retryCount);

src/Speckle.Sdk.Dependencies/packages.lock.json

@@ -13,9 +13,9 @@
       },
       "Microsoft.Extensions.ObjectPool": {
         "type": "Direct",
-        "requested": "[9.0.3, )",
-        "resolved": "9.0.3",
-        "contentHash": "4uPdnj9hLRrb3ZSeVEDtwIm9nNrrT9vAXYC9o1/yTW8lGOPwTyI2QlkcICwYEGM1LESGTFidcPMFACznUZKbIQ=="
+        "requested": "[9.0.4, )",
+        "resolved": "9.0.4",
+        "contentHash": "G7p1k2xVZ+2aVANz0JdSiafr+AHDHeS1kF8+Y0ABbIsByd0erOL59IDXBs9vcdJf3pPV/murO0mbtr4k40QxWw=="
       },
       "Microsoft.SourceLink.GitHub": {
         "type": "Direct",
@@ -38,13 +38,13 @@
       },
       "Open.ChannelExtensions": {
         "type": "Direct",
-        "requested": "[9.0.0, )",
-        "resolved": "9.0.0",
-        "contentHash": "DP+l5S6G46wcuY4I4kNXE+RDOmJr0DKuMienOdt0mMBN9z7vmLSC8YQbqCyb9i9LNjXj1tgCx5LyitJiRr/v7g==",
+        "requested": "[9.1.0, )",
+        "resolved": "9.1.0",
+        "contentHash": "D6c24vMGy1oZ06vmkD2/FNzWHK7ZIihuv2spDgYEeaUp+eobrILQnrNQKRoASFXD4JGfZ7nfvTM0e+AX79dt8Q==",
         "dependencies": {
-          "Microsoft.Bcl.AsyncInterfaces": "9.0.0",
-          "System.Collections.Immutable": "9.0.0",
-          "System.Threading.Channels": "9.0.0"
+          "Microsoft.Bcl.AsyncInterfaces": "9.0.4",
+          "System.Collections.Immutable": "9.0.4",
+          "System.Threading.Channels": "9.0.4"
         }
       },
       "Polly": {
@@ -82,11 +82,11 @@
       },
       "System.Threading.Channels": {
         "type": "Direct",
-        "requested": "[9.0.2, )",
-        "resolved": "9.0.2",
-        "contentHash": "pUmqkuBS9OxWHOlfNad09Oxc8gRbxgN9UQtsqHPst4jfcgZRxQetNcsT2oe+VnUpEFAtBy1FZcJZiOscrBmA7g==",
+        "requested": "[9.0.4, )",
+        "resolved": "9.0.4",
+        "contentHash": "4qBn2H6/aXBpE/Pm3wY5yusY/pEvQz99NlWHrTUji0qCmOdbhhjaALcpmbfW2ksxlPM6i6S+QFLkpOQdyfeKYQ==",
         "dependencies": {
-          "Microsoft.Bcl.AsyncInterfaces": "9.0.2",
+          "Microsoft.Bcl.AsyncInterfaces": "9.0.4",
           "System.Threading.Tasks.Extensions": "4.5.4"
         }
       },
@@ -117,8 +117,8 @@
       },
       "System.Collections.Immutable": {
         "type": "Transitive",
-        "resolved": "9.0.0",
-        "contentHash": "QhkXUl2gNrQtvPmtBTQHb0YsUrDiDQ2QS09YbtTTiSjGcf7NBqtYbrG/BE06zcBPCKEwQGzIv13IVdXNOSub2w==",
+        "resolved": "9.0.4",
+        "contentHash": "wfm2NgK22MmBe5qJjp52qzpkeDZKb4l9LbdubhZSehY1z4LS+lld6R+B+UQNb2AZRHu/QJlHxEUcRst5hIEejg==",
         "dependencies": {
           "System.Memory": "4.5.5",
           "System.Runtime.CompilerServices.Unsafe": "6.0.0"
@@ -155,8 +155,8 @@
       "Microsoft.Bcl.AsyncInterfaces": {
         "type": "CentralTransitive",
         "requested": "[5.0.0, )",
-        "resolved": "9.0.2",
-        "contentHash": "1CED0BGD7dCKsbe7tDhzpPB2Qdi9x35QChu6zkBEI4s0T5bDkkttGReqQnOeOfRNSxtP2WvpX6Ik/0O93XDuMw==",
+        "resolved": "9.0.4",
+        "contentHash": "9VGI5kxIvrNG2mqLQZnUR6y/3fcnygD8eNpHR+CqfbnIXvea6nehnYknDKQTxZVPMpzpNca+7DxLBmpdB3q0Bw==",
         "dependencies": {
           "System.Threading.Tasks.Extensions": "4.5.4"
         }
@@ -174,9 +174,9 @@
       },
       "Microsoft.Extensions.ObjectPool": {
         "type": "Direct",
-        "requested": "[9.0.3, )",
-        "resolved": "9.0.3",
-        "contentHash": "4uPdnj9hLRrb3ZSeVEDtwIm9nNrrT9vAXYC9o1/yTW8lGOPwTyI2QlkcICwYEGM1LESGTFidcPMFACznUZKbIQ=="
+        "requested": "[9.0.4, )",
+        "resolved": "9.0.4",
+        "contentHash": "G7p1k2xVZ+2aVANz0JdSiafr+AHDHeS1kF8+Y0ABbIsByd0erOL59IDXBs9vcdJf3pPV/murO0mbtr4k40QxWw=="
       },
       "Microsoft.SourceLink.GitHub": {
         "type": "Direct",
@@ -190,9 +190,9 @@
       },
       "Open.ChannelExtensions": {
         "type": "Direct",
-        "requested": "[9.0.0, )",
-        "resolved": "9.0.0",
-        "contentHash": "DP+l5S6G46wcuY4I4kNXE+RDOmJr0DKuMienOdt0mMBN9z7vmLSC8YQbqCyb9i9LNjXj1tgCx5LyitJiRr/v7g=="
+        "requested": "[9.1.0, )",
+        "resolved": "9.1.0",
+        "contentHash": "D6c24vMGy1oZ06vmkD2/FNzWHK7ZIihuv2spDgYEeaUp+eobrILQnrNQKRoASFXD4JGfZ7nfvTM0e+AX79dt8Q=="
       },
       "Polly": {
         "type": "Direct",
@@ -229,9 +229,9 @@
       },
       "System.Threading.Channels": {
         "type": "Direct",
-        "requested": "[9.0.2, )",
-        "resolved": "9.0.2",
-        "contentHash": "pUmqkuBS9OxWHOlfNad09Oxc8gRbxgN9UQtsqHPst4jfcgZRxQetNcsT2oe+VnUpEFAtBy1FZcJZiOscrBmA7g=="
+        "requested": "[9.0.4, )",
+        "resolved": "9.0.4",
+        "contentHash": "4qBn2H6/aXBpE/Pm3wY5yusY/pEvQz99NlWHrTUji0qCmOdbhhjaALcpmbfW2ksxlPM6i6S+QFLkpOQdyfeKYQ=="
       },
       "ILRepack": {
         "type": "Transitive",

src/Speckle.Sdk/Api/Exceptions.cs

@@ -1,4 +1,5 @@
 using Speckle.Sdk.Api.GraphQL;
+using Speckle.Sdk.Api.GraphQL.Models;
 
 namespace Speckle.Sdk.Api;
 
@@ -96,3 +97,43 @@ public sealed class SpeckleGraphQLInvalidQueryException : SpeckleGraphQLExceptio
   public SpeckleGraphQLInvalidQueryException(string? message, Exception? innerException)
     : base(message, innerException) { }
 }
+
+/// <summary>
+/// Represents a <c>WORKSPACES_MODULE_DISABLED_ERROR</c> GraphQL error as an exception
+/// </summary>
+/// <remarks>
+/// A GraphQL request for workspace resources was made to a server that does not have the <c>FF_WORKSPACES_MODULE_ENABLED</c> feature flag enabled
+/// </remarks>
+public sealed class SpeckleGraphQLWorkspaceNotEnabledException : SpeckleGraphQLException
+{
+  public SpeckleGraphQLWorkspaceNotEnabledException() { }
+
+  public SpeckleGraphQLWorkspaceNotEnabledException(string? message)
+    : base(message) { }
+
+  public SpeckleGraphQLWorkspaceNotEnabledException(string? message, Exception? innerException)
+    : base(message, innerException) { }
+}
+
+/// <seealso cref="PermissionCheckResult"/>
+public sealed class WorkspacePermissionException : SpeckleGraphQLException
+{
+  public WorkspacePermissionException() { }
+
+  public WorkspacePermissionException(string? message)
+    : base(message) { }
+
+  public WorkspacePermissionException(string? message, Exception? innerException)
+    : base(message, innerException) { }
+}
+
+public sealed class CannotCreateCommitException : SpeckleGraphQLException
+{
+  public CannotCreateCommitException() { }
+
+  public CannotCreateCommitException(string? message)
+    : base(message) { }
+
+  public CannotCreateCommitException(string? message, Exception? innerException)
+    : base(message, innerException) { }
+}

src/Speckle.Sdk/Api/GraphQL/Client.cs

@@ -1,18 +1,13 @@
 using System.Diagnostics.CodeAnalysis;
-using System.Net.WebSockets;
-using System.Reflection;
 using GraphQL;
 using GraphQL.Client.Http;
 using Microsoft.Extensions.Logging;
 using Speckle.InterfaceGenerator;
 using Speckle.Newtonsoft.Json;
-using Speckle.Newtonsoft.Json.Serialization;
 using Speckle.Sdk.Api.GraphQL;
 using Speckle.Sdk.Api.GraphQL.Resources;
-using Speckle.Sdk.Api.GraphQL.Serializer;
 using Speckle.Sdk.Credentials;
 using Speckle.Sdk.Dependencies;
-using Speckle.Sdk.Helpers;
 using Speckle.Sdk.Logging;
 
 namespace Speckle.Sdk.Api;
@@ -36,14 +31,14 @@ public sealed class Client : ISpeckleGraphQLClient, IClient
   public ProjectInviteResource ProjectInvite { get; }
   public CommentResource Comment { get; }
   public SubscriptionResource Subscription { get; }
+  public WorkspaceResource Workspace { get; }
+  public ServerResource Server { get; }
 
   public Uri ServerUrl => new(Account.serverInfo.url);
 
   [JsonIgnore]
   public Account Account { get; }
 
-  private HttpClient HttpClient { get; }
-
   [AutoInterfaceIgnore]
   public GraphQLHttpClient GQLClient { get; }
 
@@ -52,8 +47,7 @@ public sealed class Client : ISpeckleGraphQLClient, IClient
   public Client(
     ILogger<Client> logger,
     ISdkActivityFactory activityFactory,
-    ISpeckleApplication application,
-    ISpeckleHttp speckleHttp,
+    IGraphQLClientFactory graphqlClientFactory,
     Account account
   )
   {
@@ -69,10 +63,10 @@ public sealed class Client : ISpeckleGraphQLClient, IClient
     ProjectInvite = new(this);
     Comment = new(this);
     Subscription = new(this);
+    Workspace = new(this);
+    Server = new(this);
 
-    HttpClient = CreateHttpClient(application, speckleHttp, account);
-
-    GQLClient = CreateGraphQLClient(account, HttpClient);
+    GQLClient = graphqlClientFactory.CreateGraphQLClient(account);
   }
 
   [AutoInterfaceIgnore]
@@ -105,7 +99,7 @@ public sealed class Client : ISpeckleGraphQLClient, IClient
       )
       .ConfigureAwait(false);
 
-  /// <inheritdoc/>
+  /// <inheritdoc cref="ISpeckleGraphQLClient.ExecuteGraphQLRequest{T}" />
   public async Task<T> ExecuteGraphQLRequest<T>(GraphQLRequest request, CancellationToken cancellationToken = default)
   {
     using var activity = _activityFactory.Start();
@@ -133,10 +127,10 @@ public sealed class Client : ISpeckleGraphQLClient, IClient
       activity?.SetStatus(SdkActivityStatusCode.Ok);
       return ret;
     }
-    catch (Exception ex)
+    catch (Exception)
     {
       activity?.SetStatus(SdkActivityStatusCode.Error);
-      activity?.RecordException(ex);
+      // Don't record exception as it's rethrown.
       throw;
     }
   }
@@ -186,62 +180,4 @@ public sealed class Client : ISpeckleGraphQLClient, IClient
       throw new SpeckleGraphQLException($"Subscription for {typeof(T)} failed to start", ex);
     }
   }
-
-  private static GraphQLHttpClient CreateGraphQLClient(Account account, HttpClient httpClient)
-  {
-    var gQLClient = new GraphQLHttpClient(
-      new GraphQLHttpClientOptions
-      {
-        EndPoint = new Uri(new Uri(account.serverInfo.url), "/graphql"),
-        UseWebSocketForQueriesAndMutations = false,
-        WebSocketProtocol = "graphql-ws",
-        ConfigureWebSocketConnectionInitPayload = _ =>
-        {
-          return SpeckleHttp.CanAddAuth(account.token, out string? authValue)
-            ? new { Authorization = authValue }
-            : null;
-        },
-      },
-      new NewtonsoftJsonSerializer(
-        new JsonSerializerSettings()
-        {
-          ContractResolver = new CamelCasePropertyNamesContractResolver { IgnoreIsSpecifiedMembers = true }, //(Default)
-          MissingMemberHandling = MissingMemberHandling.Error, //(not default) If you query for a member that doesn't exist, this will throw (except websocket responses see https://github.com/graphql-dotnet/graphql-client/issues/660)
-          Converters =
-          {
-            new ConstantCaseEnumConverter(),
-          } //(Default) enums will be serialized using the GraphQL const case standard
-          ,
-        }
-      ),
-      httpClient
-    );
-
-    gQLClient.WebSocketReceiveErrors.Subscribe(e =>
-    {
-      if (e is WebSocketException we)
-      {
-        Console.WriteLine(
-          $"WebSocketException: {we.Message} (WebSocketError {we.WebSocketErrorCode}, ErrorCode {we.ErrorCode}, NativeErrorCode {we.NativeErrorCode}"
-        );
-      }
-      else
-      {
-        Console.WriteLine($"Exception in websocket receive stream: {e}");
-      }
-    });
-    return gQLClient;
-  }
-
-  private static HttpClient CreateHttpClient(ISpeckleApplication application, ISpeckleHttp speckleHttp, Account account)
-  {
-    var httpClient = speckleHttp.CreateHttpClient(timeoutSeconds: 30, authorizationToken: account.token);
-
-    httpClient.DefaultRequestHeaders.Add("apollographql-client-name", application.ApplicationAndVersion);
-    httpClient.DefaultRequestHeaders.Add(
-      "apollographql-client-version",
-      Assembly.GetExecutingAssembly().GetName().Version?.ToString()
-    );
-    return httpClient;
-  }
 }

src/Speckle.Sdk/Api/GraphQL/ClientFactory.cs

@@ -1,7 +1,6 @@
 using Microsoft.Extensions.Logging;
 using Speckle.InterfaceGenerator;
 using Speckle.Sdk.Credentials;
-using Speckle.Sdk.Helpers;
 using Speckle.Sdk.Logging;
 
 namespace Speckle.Sdk.Api;
@@ -10,10 +9,9 @@ namespace Speckle.Sdk.Api;
 public class ClientFactory(
   ILoggerFactory loggerFactory,
   ISdkActivityFactory activityFactory,
-  ISpeckleApplication application,
-  ISpeckleHttp speckleHttp
+  IGraphQLClientFactory graphQLClientFactory
 ) : IClientFactory
 {
   public IClient Create(Account account) =>
-    new Client(loggerFactory.CreateLogger<Client>(), activityFactory, application, speckleHttp, account);
+    new Client(loggerFactory.CreateLogger<Client>(), activityFactory, graphQLClientFactory, account);
 }

src/Speckle.Sdk/Api/GraphQL/Enums/ProjectVisibility.cs

@@ -1,10 +1,11 @@
-namespace Speckle.Sdk.Api.GraphQL.Enums;
+namespace Speckle.Sdk.Api.GraphQL.Enums;
 
 public enum ProjectVisibility
 {
-  Private = 0,
+  Private,
+  Public,
 
-  [Obsolete("Use Unlisted instead", true)]
-  Public = 1,
-  Unlisted = 2,
+  [Obsolete("Use Public instead")]
+  Unlisted,
+  Workspace,
 }

src/Speckle.Sdk/Api/GraphQL/GraphQLErrorHandler.cs

@@ -32,6 +32,8 @@ internal static class GraphQLErrorHandler
         "STREAM_NOT_FOUND" => new SpeckleGraphQLStreamNotFoundException(message),
         "BAD_USER_INPUT" => new SpeckleGraphQLBadInputException(message),
         "INTERNAL_SERVER_ERROR" => new SpeckleGraphQLInternalErrorException(message),
+        "WORKSPACES_MODULE_DISABLED_ERROR" => new SpeckleGraphQLWorkspaceNotEnabledException(message),
+        "COMMIT_CREATE_ERROR" => new CannotCreateCommitException(message),
         _ => new SpeckleGraphQLException(message),
       };
       exceptions.Add(ex);

src/Speckle.Sdk/Api/GraphQL/GraphQLHttpClientExtensions.cs

@@ -40,7 +40,8 @@ public static class GraphQLHttpClientExtensions
     response.EnsureGraphQLSuccess();
 
     string versionString = response.Data.data.data;
-    if (versionString == "dev")
+    //Local server builds will have a non-numerical version string
+    if (versionString == "dev" || versionString == "custom")
     {
       return new Version(999, 999, 999);
     }

src/Speckle.Sdk/Api/GraphQL/Inputs/CommentInputs.cs

@@ -1,8 +1,8 @@
 namespace Speckle.Sdk.Api.GraphQL.Inputs;
 
-internal sealed record CommentContentInput(IReadOnlyCollection<string>? blobIds, object? doc);
+internal record CommentContentInput(IReadOnlyCollection<string>? blobIds, object? doc);
 
-internal sealed record CreateCommentInput(
+internal record CreateCommentInput(
   CommentContentInput content,
   string projectId,
   string resourceIdString,
@@ -10,10 +10,10 @@ internal sealed record CreateCommentInput(
   object? viewerState
 );
 
-internal sealed record EditCommentInput(CommentContentInput content, string commentId, string projectId);
+internal record EditCommentInput(CommentContentInput content, string commentId, string projectId);
 
-internal sealed record CreateCommentReplyInput(CommentContentInput content, string threadId, string projectId);
+internal record CreateCommentReplyInput(CommentContentInput content, string threadId, string projectId);
 
-public sealed record MarkCommentViewedInput(string commentId, string projectId);
+public record MarkCommentViewedInput(string commentId, string projectId);
 
-public sealed record ArchiveCommentInput(string commentId, string projectId, bool archived = true);
+public record ArchiveCommentInput(string commentId, string projectId, bool archived = true);

src/Speckle.Sdk/Api/GraphQL/Inputs/ModelInputs.cs

@@ -1,9 +1,9 @@
 namespace Speckle.Sdk.Api.GraphQL.Inputs;
 
-public sealed record CreateModelInput(string name, string? description, string projectId);
+public record CreateModelInput(string name, string? description, string projectId);
 
-public sealed record DeleteModelInput(string id, string projectId);
+public record DeleteModelInput(string id, string projectId);
 
-public sealed record UpdateModelInput(string id, string? name, string? description, string projectId);
+public record UpdateModelInput(string id, string? name, string? description, string projectId);
 
-public sealed record ModelVersionsFilter(IReadOnlyList<string> priorityIds, bool? priorityIdsOnly);
+public record ModelVersionsFilter(IReadOnlyList<string> priorityIds, bool? priorityIdsOnly);

src/Speckle.Sdk/Api/GraphQL/Inputs/ProjectInputs.cs

@@ -2,15 +2,22 @@
 
 namespace Speckle.Sdk.Api.GraphQL.Inputs;
 
-public sealed record ProjectCommentsFilter(bool? includeArchived, bool? loadedVersionsOnly, string? resourceIdString);
+public record ProjectCommentsFilter(bool? includeArchived, bool? loadedVersionsOnly, string? resourceIdString);
 
-public sealed record ProjectCreateInput(string? name, string? description, ProjectVisibility? visibility);
+public record ProjectCreateInput(string? name, string? description, ProjectVisibility? visibility);
 
-public sealed record ProjectInviteCreateInput(string? email, string? role, string? serverRole, string? userId);
+public record WorkspaceProjectCreateInput(
+  string? name,
+  string? description,
+  ProjectVisibility? visibility,
+  string workspaceId
+);
 
-public sealed record ProjectInviteUseInput(bool accept, string projectId, string token);
+public record ProjectInviteCreateInput(string? email, string? role, string? serverRole, string? userId);
 
-public sealed record ProjectModelsFilter(
+public record ProjectInviteUseInput(bool accept, string projectId, string token);
+
+public record ProjectModelsFilter(
   IReadOnlyList<string>? contributors = null,
   IReadOnlyList<string>? excludeIds = null,
   IReadOnlyList<string>? ids = null,
@@ -19,7 +26,7 @@ public sealed record ProjectModelsFilter(
   IReadOnlyList<string>? sourceApps = null
 );
 
-public sealed record ProjectUpdateInput(
+public record ProjectUpdateInput(
   string id,
   string? name = null,
   string? description = null,
@@ -27,6 +34,6 @@ public sealed record ProjectUpdateInput(
   ProjectVisibility? visibility = null
 );
 
-public sealed record ProjectUpdateRoleInput(string userId, string projectId, string? role);
+public record ProjectUpdateRoleInput(string userId, string projectId, string? role);
 
-public sealed record UserProjectsFilter(string search, IReadOnlyList<string>? onlyWithRoles = null);
+public record WorkspaceProjectsFilter(string? search, bool? withProjectRoleOnly);

src/Speckle.Sdk/Api/GraphQL/Inputs/SubscriptionInputs.cs

@@ -1,7 +1,3 @@
 namespace Speckle.Sdk.Api.GraphQL.Inputs;
 
-public sealed record ViewerUpdateTrackingTarget(
-  string projectId,
-  string resourceIdString,
-  bool? loadedVersionsOnly = null
-);
+public record ViewerUpdateTrackingTarget(string projectId, string resourceIdString, bool? loadedVersionsOnly = null);

src/Speckle.Sdk/Api/GraphQL/Inputs/UserInputs.cs

@@ -1,8 +1,13 @@
 namespace Speckle.Sdk.Api.GraphQL.Inputs;
 
-public sealed record UserUpdateInput(
-  string? avatar = null,
-  string? bio = null,
-  string? company = null,
-  string? name = null
+public record UserUpdateInput(string? avatar = null, string? bio = null, string? company = null, string? name = null);
+
+public record UserProjectsFilter(
+  string? search = null,
+  IReadOnlyList<string>? onlyWithRoles = null,
+  string? workspaceId = null,
+  bool? personalOnly = null,
+  bool? includeImplicitAccess = null
 );
+
+public record UserWorkspacesFilter(string? search);

src/Speckle.Sdk/Api/GraphQL/Inputs/VersionInputs.cs

@@ -1,12 +1,12 @@
 namespace Speckle.Sdk.Api.GraphQL.Inputs;
 
-public sealed record UpdateVersionInput(string versionId, string projectId, string? message);
+public record UpdateVersionInput(string versionId, string projectId, string? message);
 
-public sealed record MoveVersionsInput(string projectId, string targetModelName, IReadOnlyList<string> versionIds);
+public record MoveVersionsInput(string projectId, string targetModelName, IReadOnlyList<string> versionIds);
 
-public sealed record DeleteVersionsInput(IReadOnlyList<string> versionIds, string projectId);
+public record DeleteVersionsInput(IReadOnlyList<string> versionIds, string projectId);
 
-public sealed record CreateVersionInput(
+public record CreateVersionInput(
   string objectId,
   string modelId,
   string projectId,
@@ -16,7 +16,7 @@ public sealed record CreateVersionInput(
   IReadOnlyList<string>? parents = null
 );
 
-public sealed record MarkReceivedVersionInput(
+public record MarkReceivedVersionInput(
   string versionId,
   string projectId,
   string sourceApplication,

src/Speckle.Sdk/Api/GraphQL/Models/PermissionCheckResult.cs

@@ -0,0 +1,17 @@
+namespace Speckle.Sdk.Api.GraphQL.Models;
+
+public sealed class PermissionCheckResult
+{
+  public bool authorized { get; init; }
+  public string code { get; init; }
+  public string message { get; init; }
+
+  /// <exception cref="SpeckleException">Throws when <see cref="PermissionCheckResult.authorized"/> is <see langword="false"/></exception>
+  public void EnsureAuthorised()
+  {
+    if (!authorized)
+    {
+      throw new WorkspacePermissionException(message);
+    }
+  }
+}

src/Speckle.Sdk/Api/GraphQL/Models/Project.cs

@@ -26,3 +26,8 @@ public sealed class ProjectWithTeam : Project
   public List<PendingStreamCollaborator> invitedTeam { get; init; }
   public List<ProjectCollaborator> team { get; init; }
 }
+
+public sealed class ProjectWithPermissions : Project
+{
+  public ProjectPermissionChecks permissions { get; init; }
+}

src/Speckle.Sdk/Api/GraphQL/Models/ProjectPermissionChecks.cs

@@ -0,0 +1,9 @@
+namespace Speckle.Sdk.Api.GraphQL.Models;
+
+public sealed class ProjectPermissionChecks
+{
+  public PermissionCheckResult canCreateModel { get; init; }
+  public PermissionCheckResult canDelete { get; init; }
+  public PermissionCheckResult canLoad { get; init; }
+  public PermissionCheckResult canPublish { get; init; }
+}

src/Speckle.Sdk/Api/GraphQL/Models/Responses/Responses.cs

@@ -9,10 +9,10 @@ namespace Speckle.Sdk.Api.GraphQL.Models.Responses;
 /// </summary>
 /// <param name="data"></param>
 /// <typeparam name="T"></typeparam>
-internal record RequiredResponse<T>([property: JsonProperty(Required = Required.Always)] T data);
+public record RequiredResponse<T>([property: JsonProperty(Required = Required.Always)] T data);
 
 /// <inheritdoc cref="RequiredResponse{T}"/>
-internal record NullableResponse<T>([property: JsonProperty(Required = Required.AllowNull)] T? data);
+public record NullableResponse<T>([property: JsonProperty(Required = Required.AllowNull)] T? data);
 
 //TODO: replace with RequiredResponse{T}
 internal record ServerInfoResponse([property: JsonProperty(Required = Required.Always)] ServerInfo serverInfo);

src/Speckle.Sdk/Api/GraphQL/Models/ServerInfo.cs

@@ -16,12 +16,8 @@ public sealed class ServerInfo
   public string? version { get; init; }
   public string? description { get; init; }
 
-  /// <remarks>
-  /// This field is not returned from the GQL API,
-  /// it should be populated after construction from the response headers.
-  /// see <see cref="Speckle.Sdk.Credentials.AccountManager"/>
-  /// </remarks>
-  public bool frontend2 { get; set; }
+  [Obsolete("Don't use")]
+  public bool frontend2 { get; set; } = true;
 
   /// <remarks>
   /// This field is not returned from the GQL API,

src/Speckle.Sdk/Api/GraphQL/Models/Version.cs

@@ -7,6 +7,8 @@ public sealed class Version
   public string id { get; init; }
   public string? message { get; init; }
   public Uri previewUrl { get; init; }
-  public string referencedObject { get; init; }
+
+  /// <remarks>May be <see langword="null"/> if workspaces version history limit has been exceeded</remarks>
+  public string? referencedObject { get; init; }
   public string? sourceApplication { get; init; }
 }

src/Speckle.Sdk/Api/GraphQL/Models/Workspace.cs

@@ -0,0 +1,26 @@
+namespace Speckle.Sdk.Api.GraphQL.Models;
+
+public sealed class Workspace
+{
+  public string id { get; init; }
+  public string name { get; init; }
+  public string role { get; init; }
+  public string slug { get; init; }
+  public string? description { get; init; }
+  public string? logo { get; init; }
+  public DateTime? createdAt { get; init; }
+  public DateTime? updatedAt { get; init; }
+  public bool? readOnly { get; init; }
+  public WorkspacePermissionChecks permissions { get; init; }
+  public WorkspaceCreationState? creationState { get; init; }
+}
+
+public sealed class WorkspaceCreationState
+{
+  public bool completed { get; init; }
+}
+
+public sealed class WorkspacePermissionChecks
+{
+  public PermissionCheckResult canCreateProject { get; init; }
+}

src/Speckle.Sdk/Api/GraphQL/Resources/ActiveUserResource.cs

@@ -85,6 +85,7 @@ public sealed class ActiveUserResource
   /// <param name="cancellationToken"></param>
   /// <returns></returns>
   /// <inheritdoc cref="ISpeckleGraphQLClient.ExecuteGraphQLRequest{T}"/>
+  /// <exception cref="SpeckleException">The ActiveUser could not be found (e.g. the client is not authenticated)</exception>
   public async Task<ResourceCollection<Project>> GetProjects(
     int limit = ServerLimits.DEFAULT_PAGINATION_REQUEST,
     string? cursor = null,
@@ -135,7 +136,7 @@ public sealed class ActiveUserResource
 
     if (response.data is null)
     {
-      throw new SpeckleGraphQLException("GraphQL response indicated that the ActiveUser could not be found");
+      throw new SpeckleException("GraphQL response indicated that the ActiveUser could not be found");
     }
 
     return response.data.data;
@@ -199,8 +200,250 @@ public sealed class ActiveUserResource
     return response.data.data;
   }
 
-  /// <inheritdoc cref="GetProjectInvites"/>
-  [Obsolete($"Renamed to {nameof(GetProjectInvites)}")]
-  public async Task<List<PendingStreamCollaborator>> ProjectInvites(CancellationToken cancellationToken = default) =>
-    await GetProjectInvites(cancellationToken).ConfigureAwait(false);
+  /// <param name="cancellationToken"></param>
+  /// <returns></returns>
+  /// <inheritdoc cref="ISpeckleGraphQLClient.ExecuteGraphQLRequest{T}"/>
+  /// <exception cref="SpeckleException">The ActiveUser could not be found (e.g. the client is not authenticated)</exception>
+  public async Task<PermissionCheckResult> CanCreatePersonalProjects(CancellationToken cancellationToken = default)
+  {
+    //language=graphql
+    const string QUERY = """
+      query CanCreatePersonalProject {
+        data:activeUser {
+          data:permissions {
+            data:canCreatePersonalProject {
+              authorized
+              code
+              message
+            }
+          }
+        }
+      }
+      """;
+
+    var request = new GraphQLRequest { Query = QUERY };
+
+    var response = await _client
+      .ExecuteGraphQLRequest<NullableResponse<RequiredResponse<RequiredResponse<PermissionCheckResult>>?>>(
+        request,
+        cancellationToken
+      )
+      .ConfigureAwait(false);
+
+    if (response.data is null)
+    {
+      throw new SpeckleException("GraphQL response indicated that the ActiveUser could not be found");
+    }
+
+    return response.data.data.data;
+  }
+
+  /// <remarks>This feature is only available on Workspace enabled servers (e.g. app.speckle.systems)</remarks>
+  /// <param name="limit"></param>
+  /// <param name="cursor"></param>
+  /// <param name="filter"></param>
+  /// <returns></returns>
+  /// <inheritdoc cref="ISpeckleGraphQLClient.ExecuteGraphQLRequest{T}"/>
+  /// <exception cref="SpeckleException">The ActiveUser could not be found (e.g. the client is not authenticated)</exception>
+  public async Task<ResourceCollection<Workspace>> GetWorkspaces(
+    int limit = ServerLimits.DEFAULT_PAGINATION_REQUEST,
+    string? cursor = null,
+    UserWorkspacesFilter? filter = null,
+    CancellationToken cancellationToken = default
+  )
+  {
+    //language=graphql
+    const string QUERY = """
+      query ActiveUser($limit: Int!, $cursor: String, $filter: UserWorkspacesFilter) {
+        data:activeUser {
+          data:workspaces(limit: $limit, cursor: $cursor, filter: $filter) {
+            cursor
+            totalCount
+            items {
+              id
+              name
+              role
+              slug
+              logo
+              createdAt
+              updatedAt
+              readOnly
+              description
+              creationState
+              {
+                completed
+              }
+              permissions {
+                canCreateProject {
+                  authorized
+                  code
+                  message
+                }
+              }
+            }
+          }
+        }
+      }
+      """;
+
+    var request = new GraphQLRequest
+    {
+      Query = QUERY,
+      Variables = new
+      {
+        limit,
+        cursor,
+        filter,
+      },
+    };
+
+    var response = await _client
+      .ExecuteGraphQLRequest<NullableResponse<RequiredResponse<ResourceCollection<Workspace>>?>>(
+        request,
+        cancellationToken
+      )
+      .ConfigureAwait(false);
+
+    if (response.data is null)
+    {
+      throw new SpeckleException("GraphQL response indicated that the ActiveUser could not be found");
+    }
+
+    return response.data.data;
+  }
+
+  /// <param name="cancellationToken"></param>
+  /// <returns></returns>
+  /// <inheritdoc cref="ISpeckleGraphQLClient.ExecuteGraphQLRequest{T}"/>
+  /// <exception cref="SpeckleException">The ActiveUser could not be found (e.g. the client is not authenticated)</exception>
+  public async Task<Workspace?> GetActiveWorkspace(CancellationToken cancellationToken = default)
+  {
+    //language=graphql
+    const string QUERY = """
+      query ActiveUser {
+        data:activeUser {
+          data:activeWorkspace {
+            id
+            name
+            role
+            slug
+            logo
+            createdAt
+            updatedAt
+            readOnly
+            description
+            creationState
+            {
+              completed
+            }
+            permissions {
+              canCreateProject {
+                authorized
+                code
+                message
+              }
+            }
+          }
+        }
+      }
+      """;
+
+    var request = new GraphQLRequest { Query = QUERY };
+
+    var response = await _client
+      .ExecuteGraphQLRequest<NullableResponse<NullableResponse<Workspace?>?>>(request, cancellationToken)
+      .ConfigureAwait(false);
+
+    if (response.data is null)
+    {
+      throw new SpeckleException("GraphQL response indicated that the ActiveUser could not be found");
+    }
+
+    return response.data.data;
+  }
+
+  /// <param name="limit">Max number of projects to fetch</param>
+  /// <param name="cursor">Optional cursor for pagination</param>
+  /// <param name="filter">Optional filter</param>
+  /// <param name="cancellationToken"></param>
+  /// <returns></returns>
+  /// <inheritdoc cref="ISpeckleGraphQLClient.ExecuteGraphQLRequest{T}"/>
+  /// <exception cref="SpeckleException">The ActiveUser could not be found (e.g. the client is not authenticated)</exception>
+  public async Task<ResourceCollection<ProjectWithPermissions>> GetProjectsWithPermissions(
+    int limit = ServerLimits.DEFAULT_PAGINATION_REQUEST,
+    string? cursor = null,
+    UserProjectsFilter? filter = null,
+    CancellationToken cancellationToken = default
+  )
+  {
+    //language=graphql
+    const string QUERY = """
+      query User($limit: Int!, $cursor: String, $filter: UserProjectsFilter) {
+        data: activeUser {
+          data: projects(limit: $limit, cursor: $cursor, filter: $filter) {
+            totalCount
+            cursor
+            items {
+              id
+              name
+              description
+              visibility
+              allowPublicComments
+              role
+              createdAt
+              updatedAt
+              sourceApps
+              workspaceId
+              permissions {
+                canCreateModel {
+                  code
+                  authorized
+                  message
+                }
+                canDelete {
+                  code
+                  authorized
+                  message
+                }
+                canLoad {
+                  code
+                  authorized
+                  message
+                }
+                canPublish {
+                  code
+                  authorized
+                  message
+                }
+              }
+            }
+          }
+        }
+      }
+      """;
+    var request = new GraphQLRequest
+    {
+      Query = QUERY,
+      Variables = new
+      {
+        limit,
+        cursor,
+        filter,
+      },
+    };
+
+    var response = await _client
+      .ExecuteGraphQLRequest<NullableResponse<RequiredResponse<ResourceCollection<ProjectWithPermissions>>?>>(
+        request,
+        cancellationToken
+      )
+      .ConfigureAwait(false);
+
+    if (response.data is null)
+    {
+      throw new SpeckleException("GraphQL response indicated that the ActiveUser could not be found");
+    }
+
+    return response.data.data;
+  }
 }

src/Speckle.Sdk/Api/GraphQL/Resources/ProjectResource.cs

@@ -47,6 +47,52 @@ public sealed class ProjectResource
     return response.data;
   }
 
+  /// <param name="projectId"></param>
+  /// <param name="cancellationToken"></param>
+  /// <returns></returns>
+  /// <inheritdoc cref="ISpeckleGraphQLClient.ExecuteGraphQLRequest{T}"/>
+  public async Task<ProjectPermissionChecks> GetPermissions(
+    string projectId,
+    CancellationToken cancellationToken = default
+  )
+  {
+    //language=graphql
+    const string QUERY = """
+      query Project($projectId: String!) {
+        data:project(id: $projectId) {
+          data:permissions {
+            canCreateModel {
+              authorized
+              code
+              message
+            }
+            canDelete {
+              authorized
+              code
+              message
+            }
+            canLoad {
+              authorized
+              code
+              message
+            }
+            canPublish {
+              authorized
+              code
+              message
+            }
+          }
+        }
+      }
+      """;
+    GraphQLRequest request = new() { Query = QUERY, Variables = new { projectId } };
+
+    var response = await _client
+      .ExecuteGraphQLRequest<RequiredResponse<RequiredResponse<ProjectPermissionChecks>>>(request, cancellationToken)
+      .ConfigureAwait(false);
+    return response.data.data;
+  }
+
   /// <param name="projectId"></param>
   /// <param name="modelsLimit">Max number of models to fetch</param>
   /// <param name="modelsCursor">Optional cursor for pagination</param>
@@ -186,6 +232,10 @@ public sealed class ProjectResource
     return response.data;
   }
 
+  /// <summary>
+  /// Creates a non-workspace project (aka Personal Project)<br/>
+  /// See <see cref="ActiveUserResource.CanCreatePersonalProjects"/> to see if the user has permission
+  /// </summary>
   /// <param name="input"></param>
   /// <param name="cancellationToken"></param>
   /// <returns></returns>
@@ -219,6 +269,49 @@ public sealed class ProjectResource
     return response.data.data;
   }
 
+  /// <summary>
+  /// Creates a workspace project.<br/>
+  /// This feature is only supported on Workspace Enabled Servers (e.g. app.speckle.systems)
+  /// See <see cref="ActiveUserResource.CanCreatePersonalProjects"/> to see if the user has permission
+  /// </summary>
+  /// <param name="input"></param>
+  /// <param name="cancellationToken"></param>
+  /// <returns></returns>
+  /// <inheritdoc cref="ISpeckleGraphQLClient.ExecuteGraphQLRequest{T}"/>
+  public async Task<Project> CreateInWorkspace(
+    WorkspaceProjectCreateInput input,
+    CancellationToken cancellationToken = default
+  )
+  {
+    //language=graphql
+    const string QUERY = """
+      mutation WorkspaceProjectCreate($input: WorkspaceProjectCreateInput!) {
+        data:workspaceMutations {
+          data:projects {
+            data:create(input: $input) {
+              id
+              name
+              description
+              visibility
+              allowPublicComments
+              role
+              createdAt
+              updatedAt
+              sourceApps
+              workspaceId
+            }
+          }
+        }
+      }
+      """;
+    GraphQLRequest request = new() { Query = QUERY, Variables = new { input } };
+
+    var response = await _client
+      .ExecuteGraphQLRequest<RequiredResponse<RequiredResponse<RequiredResponse<Project>>>>(request, cancellationToken)
+      .ConfigureAwait(false);
+    return response.data.data.data;
+  }
+
   /// <param name="input"></param>
   /// <param name="cancellationToken"></param>
   /// <returns></returns>

src/Speckle.Sdk/Api/GraphQL/Resources/ServerResource.cs

@@ -0,0 +1,39 @@
+using GraphQL;
+using Speckle.Sdk.Api.GraphQL.Models.Responses;
+
+namespace Speckle.Sdk.Api.GraphQL.Resources;
+
+public sealed class ServerResource
+{
+  private readonly ISpeckleGraphQLClient _client;
+
+  internal ServerResource(ISpeckleGraphQLClient client)
+  {
+    _client = client;
+  }
+
+  /// <param name="cancellationToken"></param>
+  /// <returns><see langword="null"/> if server is workspaces enabled</returns>
+  /// <returns>the requested user, or null if <see cref="Client"/> was initialised with an unauthenticated account</returns>
+  /// <inheritdoc cref="ISpeckleGraphQLClient.ExecuteGraphQLRequest{T}"/>
+  public async Task<bool> IsWorkspaceEnabled(CancellationToken cancellationToken = default)
+  {
+    //language=graphql
+    const string QUERY = """
+       query {
+        data:serverInfo {
+          data:workspaces {
+            data:workspacesEnabled      
+          }
+        }
+      }
+      """;
+    var request = new GraphQLRequest { Query = QUERY };
+
+    var response = await _client
+      .ExecuteGraphQLRequest<RequiredResponse<RequiredResponse<RequiredResponse<bool>>>>(request, cancellationToken)
+      .ConfigureAwait(false);
+
+    return response.data.data.data;
+  }
+}

src/Speckle.Sdk/Api/GraphQL/Resources/WorkspaceResource.cs

@@ -0,0 +1,120 @@
+using GraphQL;
+using Speckle.Sdk.Api.GraphQL.Inputs;
+using Speckle.Sdk.Api.GraphQL.Models;
+using Speckle.Sdk.Api.GraphQL.Models.Responses;
+
+namespace Speckle.Sdk.Api.GraphQL.Resources;
+
+public sealed class WorkspaceResource
+{
+  private readonly ISpeckleGraphQLClient _client;
+
+  internal WorkspaceResource(ISpeckleGraphQLClient client)
+  {
+    _client = client;
+  }
+
+  /// <param name="workspaceId"></param>
+  /// <param name="cancellationToken"></param>
+  /// <returns></returns>
+  /// <inheritdoc cref="ISpeckleGraphQLClient.ExecuteGraphQLRequest{T}"/>
+  public async Task<Workspace> Get(string workspaceId, CancellationToken cancellationToken = default)
+  {
+    //language=graphql
+    const string QUERY = """
+      query WorkspaceGet($workspaceId: String!) {
+        data:workspace(id: $workspaceId) {
+          id
+          name
+          role
+          slug
+          logo
+          createdAt
+          updatedAt
+          readOnly
+          description
+          creationState
+          {
+            completed
+          }
+          permissions {
+            canCreateProject {
+              authorized
+              code
+              message
+            }
+          }
+        }
+      }
+      """;
+    var request = new GraphQLRequest { Query = QUERY, Variables = new { workspaceId } };
+
+    var response = await _client
+      .ExecuteGraphQLRequest<RequiredResponse<Workspace>>(request, cancellationToken)
+      .ConfigureAwait(false);
+
+    return response.data;
+  }
+
+  /// <param name="workspaceId"></param>
+  /// <param name="limit">Max number of projects to fetch</param>
+  /// <param name="cursor">Optional cursor for pagination</param>
+  /// <param name="filter"></param>
+  /// <param name="cancellationToken"></param>
+  /// <returns></returns>
+  /// <inheritdoc cref="ISpeckleGraphQLClient.ExecuteGraphQLRequest{T}"/>
+  /// <see cref="Get"/>
+  public async Task<ResourceCollection<Project>> GetProjects(
+    string workspaceId,
+    int limit = ServerLimits.DEFAULT_PAGINATION_REQUEST,
+    string? cursor = null,
+    WorkspaceProjectsFilter? filter = null,
+    CancellationToken cancellationToken = default
+  )
+  {
+    //language=graphql
+    const string QUERY = """
+      query Workspace($workspaceId: String!, $limit: Int!, $cursor: String, $filter: WorkspaceProjectsFilter) {
+        data:workspace(id: $workspaceId) {
+          data:projects(limit: $limit, cursor: $cursor, filter: $filter) {
+            cursor
+            items {
+              allowPublicComments
+              createdAt
+              description
+              id
+              name
+              role
+              sourceApps
+              updatedAt
+              visibility
+              workspaceId
+            }
+            totalCount
+          }
+        }
+      }
+      """;
+
+    var request = new GraphQLRequest
+    {
+      Query = QUERY,
+      Variables = new
+      {
+        workspaceId,
+        limit,
+        cursor,
+        filter,
+      },
+    };
+
+    var response = await _client
+      .ExecuteGraphQLRequest<RequiredResponse<RequiredResponse<ResourceCollection<Project>>>>(
+        request,
+        cancellationToken
+      )
+      .ConfigureAwait(false);
+
+    return response.data.data;
+  }
+}

src/Speckle.Sdk/Api/Operations/Operations.Receive.cs

@@ -26,9 +26,11 @@ public partial class Operations
   )
   {
     using var receiveActivity = activityFactory.Start("Operations.Receive");
+    receiveActivity?.SetTag("speckle.url", url);
+    receiveActivity?.SetTag("speckle.projectId", streamId);
+    receiveActivity?.SetTag("speckle.objectId", objectId);
     metricsFactory.CreateCounter<long>("Receive").Add(1);
 
-    receiveActivity?.SetTag("objectId", objectId);
     var process = deserializeProcessFactory.CreateDeserializeProcess(
       url,
       streamId,

src/Speckle.Sdk/Api/Operations/Operations.Send.cs

@@ -29,6 +29,8 @@ public partial class Operations
   )
   {
     using var receiveActivity = activityFactory.Start("Operations.Send");
+    receiveActivity?.SetTag("speckle.url", url);
+    receiveActivity?.SetTag("speckle.projectId", streamId);
     metricsFactory.CreateCounter<long>("Send").Add(1);
 
     var process = serializeProcessFactory.CreateSerializeProcess(
@@ -45,6 +47,11 @@ public partial class Operations
       receiveActivity?.SetStatus(SdkActivityStatusCode.Ok);
       return results;
     }
+    catch (OperationCanceledException)
+    {
+      //this is handled by the caller
+      throw;
+    }
     catch (Exception ex)
     {
       receiveActivity?.SetStatus(SdkActivityStatusCode.Error);

src/Speckle.Sdk/Caching/FileSystem.cs

@@ -0,0 +1,22 @@
+using Speckle.InterfaceGenerator;
+
+namespace Speckle.Sdk.Caching;
+
+/// <summary>
+/// This mocks away the file system operations for testing purposes.
+/// </summary>
+[GenerateAutoInterface]
+public class FileSystem : IFileSystem
+{
+  public bool DirectoryExists(string path) => Directory.Exists(path);
+
+  public void CreateDirectory(string path) => Directory.CreateDirectory(path);
+
+  public IEnumerable<string> EnumerateFiles(string path) => Directory.EnumerateFiles(path);
+
+  public void DeleteFile(string path) => File.Delete(path);
+
+  public long GetFileSize(string path) => new FileInfo(path).Length;
+
+  public string Combine(params string[] paths) => Path.Combine(paths);
+}

src/Speckle.Sdk/Caching/ModelCacheManager.cs

@@ -0,0 +1,93 @@
+using Microsoft.Extensions.Logging;
+using Speckle.InterfaceGenerator;
+using Speckle.Sdk.Logging;
+using Speckle.Sdk.Transports;
+
+namespace Speckle.Sdk.Caching;
+
+/// <summary>
+/// This class manages the cache for model data, providing methods to get stream paths, clear the cache, and calculate cache size.
+/// </summary>
+[GenerateAutoInterface]
+public class ModelCacheManager(ILogger<ModelCacheManager> logger, IFileSystem fileSystem) : IModelCacheManager
+{
+  private const string DATA_FOLDER = "Projects";
+  private static readonly string s_basePath = SpecklePathProvider.UserSpeckleFolderPath;
+
+  private static string CacheFolder => Path.Combine(s_basePath, DATA_FOLDER);
+
+  public string GetStreamPath(string streamId) => GetDbPath(streamId);
+
+  public static string GetDbPath(string streamId)
+  {
+    var db = Path.Combine(CacheFolder, $"{streamId}.db");
+    try
+    {
+      Directory.CreateDirectory(CacheFolder); //ensure dir is there
+      return db;
+    }
+    catch (Exception ex)
+      when (ex is ArgumentException or IOException or UnauthorizedAccessException or NotSupportedException)
+    {
+      throw new TransportException($"Path was invalid or could not be created {db}", ex);
+    }
+  }
+
+  public void ClearCache()
+  {
+    try
+    {
+      if (!fileSystem.DirectoryExists(CacheFolder))
+      {
+        return;
+      }
+
+      foreach (var db in fileSystem.EnumerateFiles(CacheFolder))
+      {
+        try
+        {
+          fileSystem.DeleteFile(db);
+        }
+        catch (Exception ex) when (ex is IOException or UnauthorizedAccessException or NotSupportedException)
+        {
+          logger.LogWarning(ex, "Failed to delete cache file {filePath}", db);
+        }
+      }
+    }
+    catch (Exception ex)
+      when (ex is ArgumentException or IOException or UnauthorizedAccessException or NotSupportedException)
+    {
+      throw new TransportException($"Cache folder could not be cleared: {CacheFolder}", ex);
+    }
+  }
+
+  public long GetCacheSize()
+  {
+    try
+    {
+      if (!fileSystem.DirectoryExists(CacheFolder))
+      {
+        return 0;
+      }
+
+      long size = 0;
+      foreach (var file in fileSystem.EnumerateFiles(CacheFolder))
+      {
+        try
+        {
+          size += fileSystem.GetFileSize(file);
+        }
+        catch (Exception ex) when (ex is IOException or UnauthorizedAccessException or NotSupportedException)
+        {
+          logger.LogWarning(ex, "Failed to get size for cache file {a}", file);
+        }
+      }
+      return size;
+    }
+    catch (Exception ex)
+      when (ex is ArgumentException or IOException or UnauthorizedAccessException or NotSupportedException)
+    {
+      throw new TransportException($"Cache folder size could not be determined: {CacheFolder}", ex);
+    }
+  }
+}

src/Speckle.Sdk/Common/Md5.cs

@@ -0,0 +1,165 @@
+namespace Speckle.Sdk.Common;
+
+// MD5 implementation in pure C# (public domain / no dependencies)
+// Not for cryptographic purposes
+// Using this instead of changing ID generation but avoiding built in MD5 for FIPS compliance
+
+public static class Md5
+{
+  // Standard initial values
+  private static readonly uint[] T =
+  [
+    0xd76aa478,
+    0xe8c7b756,
+    0x242070db,
+    0xc1bdceee,
+    0xf57c0faf,
+    0x4787c62a,
+    0xa8304613,
+    0xfd469501,
+    0x698098d8,
+    0x8b44f7af,
+    0xffff5bb1,
+    0x895cd7be,
+    0x6b901122,
+    0xfd987193,
+    0xa679438e,
+    0x49b40821,
+    0xf61e2562,
+    0xc040b340,
+    0x265e5a51,
+    0xe9b6c7aa,
+    0xd62f105d,
+    0x02441453,
+    0xd8a1e681,
+    0xe7d3fbc8,
+    0x21e1cde6,
+    0xc33707d6,
+    0xf4d50d87,
+    0x455a14ed,
+    0xa9e3e905,
+    0xfcefa3f8,
+    0x676f02d9,
+    0x8d2a4c8a,
+    0xfffa3942,
+    0x8771f681,
+    0x6d9d6122,
+    0xfde5380c,
+    0xa4beea44,
+    0x4bdecfa9,
+    0xf6bb4b60,
+    0xbebfbc70,
+    0x289b7ec6,
+    0xeaa127fa,
+    0xd4ef3085,
+    0x04881d05,
+    0xd9d4d039,
+    0xe6db99e5,
+    0x1fa27cf8,
+    0xc4ac5665,
+    0xf4292244,
+    0x432aff97,
+    0xab9423a7,
+    0xfc93a039,
+    0x655b59c3,
+    0x8f0ccc92,
+    0xffeff47d,
+    0x85845dd1,
+    0x6fa87e4f,
+    0xfe2ce6e0,
+    0xa3014314,
+    0x4e0811a1,
+    0xf7537e82,
+    0xbd3af235,
+    0x2ad7d2bb,
+    0xeb86d391,
+  ];
+
+  public static byte[] ComputeHash(byte[] input)
+  {
+    // Pad input
+    int origLenBits = input.Length * 8;
+    int padLen = (56 - (input.Length + 1) % 64 + 64) % 64;
+    byte[] padded = new byte[input.Length + 1 + padLen + 8];
+    Array.Copy(input, padded, input.Length);
+    padded[input.Length] = 0x80;
+    BitConverter.GetBytes((long)origLenBits).CopyTo(padded, padded.Length - 8);
+
+    // Initialize MD5 buffer
+    uint a = 0x67452301;
+    uint b = 0xefcdab89;
+    uint c = 0x98badcfe;
+    uint d = 0x10325476;
+
+    for (int i = 0; i < padded.Length / 64; i++)
+    {
+      uint[] M = new uint[16];
+      for (int j = 0; j < 16; j++)
+      {
+        M[j] = BitConverter.ToUInt32(padded, (i * 64) + j * 4);
+      }
+
+      uint AA = a,
+        BB = b,
+        CC = c,
+        DD = d;
+      for (int j = 0; j < 64; j++)
+      {
+        uint f,
+          g;
+        if (j < 16)
+        {
+          f = (b & c) | (~b & d);
+          g = (uint)j;
+        }
+        else if (j < 32)
+        {
+          f = (d & b) | (~d & c);
+          g = (uint)((5 * j + 1) % 16);
+        }
+        else if (j < 48)
+        {
+          f = b ^ c ^ d;
+          g = (uint)((3 * j + 5) % 16);
+        }
+        else
+        {
+          f = c ^ (b | ~d);
+          g = (uint)((7 * j) % 16);
+        }
+
+        uint temp = d;
+        d = c;
+        c = b;
+        b += LeftRotate(a + f + T[j] + M[g], S(j));
+        a = temp;
+      }
+      a += AA;
+      b += BB;
+      c += CC;
+      d += DD;
+    }
+
+    byte[] output = new byte[16];
+    Array.Copy(BitConverter.GetBytes(a), 0, output, 0, 4);
+    Array.Copy(BitConverter.GetBytes(b), 0, output, 4, 4);
+    Array.Copy(BitConverter.GetBytes(c), 0, output, 8, 4);
+    Array.Copy(BitConverter.GetBytes(d), 0, output, 12, 4);
+    return output;
+  }
+
+  private static int S(int i)
+  {
+    int[] s = { 7, 12, 17, 22, 5, 9, 14, 20, 4, 11, 16, 23, 6, 10, 15, 21 };
+    return s[(i / 16) * 4 + (i % 4)];
+  }
+
+  private static uint LeftRotate(uint x, int c) => (x << c) | (x >> (32 - c));
+
+  // Convenience method to get hex string
+  public static string GetString(string input)
+  {
+    var hash = ComputeHash(System.Text.Encoding.UTF8.GetBytes(input));
+    return BitConverter.ToString(hash).Replace("-", "");
+  }
+}

src/Speckle.Sdk/Common/NotNullExtensions.cs

@@ -95,4 +95,22 @@ public static class NotNullExtensions
     }
     return obj;
   }
+
+  public static string NotNullOrWhiteSpace(
+    [NotNull] this string? value,
+    [CallerArgumentExpression(nameof(value))] string? paramName = null
+  )
+  {
+    if (value is null)
+    {
+      throw new ArgumentNullException(paramName ?? "Value is null");
+    }
+
+    if (string.IsNullOrWhiteSpace(value))
+    {
+      throw new ArgumentException("Value cannot be empty or whitespace.", paramName);
+    }
+
+    return value;
+  }
 }

src/Speckle.Sdk/Common/Sha256.cs

@@ -6,17 +6,17 @@ using System.Text;
 using System.Runtime.InteropServices;
 #endif
 
-namespace Speckle.Sdk.Helpers;
+namespace Speckle.Sdk.Common;
 
-public static class Crypt
+public static class Sha256
 {
 #if NET6_0_OR_GREATER
   /// <param name="input">the value to hash</param>
   /// <param name="format"><c>"x2"</c> for lower case, <c>"X2"</c> for uppercase.</param>
   /// <param name="length">Desired length of the returned string. Must be 2 &#x2264; Length &#x2264; 64, and must be a multiple of 2</param>
-  /// <returns><inheritdoc cref="Sha256(string, string?, int)"/></returns>
+  /// <returns><inheritdoc cref="GetString(string, string?, int)"/></returns>
   [Pure]
-  public static string Sha256(
+  public static string GetString(
     ReadOnlySpan<char> input,
     [StringSyntax(StringSyntaxAttribute.NumericFormat)] string? format = "x2",
     int length = SHA256.HashSizeInBytes * sizeof(char)
@@ -45,7 +45,7 @@ public static class Crypt
   /// <exception cref="FormatException"><paramref name="format"/> is not a recognised numeric format</exception>
   /// <exception cref="ArgumentOutOfRangeException"><inheritdoc cref="StringBuilder.ToString(int, int)"/></exception>
   [Pure]
-  public static string Sha256(
+  public static string GetString(
     string input,
     [StringSyntax(StringSyntaxAttribute.NumericFormat)] string? format = "x2",
     int length = 64
@@ -67,30 +67,4 @@ public static class Crypt
 
     return sb.ToString(0, length);
   }
-
-  /// <inheritdoc cref="Sha256(string, string?, int)"/>
-  /// <remarks>MD5 is a broken cryptographic algorithm and should be used subject to review see CA5351</remarks>
-  [Pure]
-  [SuppressMessage("Security", "CA5351:Do Not Use Broken Cryptographic Algorithms")]
-  public static string Md5(
-    string input,
-    [StringSyntax(StringSyntaxAttribute.NumericFormat)] string? format = "x2",
-    int length = 32
-  )
-  {
-    byte[] inputBytes = Encoding.ASCII.GetBytes(input.ToLowerInvariant());
-#if NETSTANDARD2_0
-    using MD5 md5 = MD5.Create();
-    byte[] hashBytes = md5.ComputeHash(inputBytes);
-#else
-    byte[] hashBytes = MD5.HashData(inputBytes);
-#endif
-    StringBuilder sb = new(32);
-    for (int i = 0; i < hashBytes.Length; i++)
-    {
-      sb.Append(hashBytes[i].ToString(format));
-    }
-
-    return sb.ToString(0, length);
-  }
 }

src/Speckle.Sdk/Credentials/Account.cs

@@ -1,6 +1,6 @@
 using System.Runtime.InteropServices;
 using Speckle.Sdk.Api.GraphQL.Models;
-using Speckle.Sdk.Helpers;
+using Speckle.Sdk.Common;
 
 namespace Speckle.Sdk.Credentials;
 
@@ -25,7 +25,7 @@ public class Account : IEquatable<Account>
           throw new InvalidOperationException("Incomplete account info: cannot generate id.");
         }
 
-        _id = Crypt.Md5(userInfo.email + serverInfo.url, "X2");
+        _id = Md5.GetString(userInfo.email + serverInfo.url).ToUpperInvariant();
       }
       return _id;
     }
@@ -34,7 +34,7 @@ public class Account : IEquatable<Account>
 
   public string token { get; set; }
 
-  public string refreshToken { get; set; }
+  public string? refreshToken { get; set; }
 
   public bool isDefault { get; set; }
   public bool isOnline { get; set; } = true;
@@ -62,13 +62,13 @@ public class Account : IEquatable<Account>
   public string GetHashedEmail()
   {
     string email = userInfo?.email ?? "unknown";
-    return "@" + Crypt.Md5(email, "X2");
+    return "@" + Md5.GetString(email).ToUpperInvariant();
   }
 
   public string GetHashedServer()
   {
     string url = serverInfo?.url ?? AccountManager.DEFAULT_SERVER_URL;
-    return Crypt.Md5(CleanURL(url), "X2");
+    return Md5.GetString(CleanURL(url)).ToUpperInvariant();
   }
 
   public override string ToString()

src/Speckle.Sdk/Credentials/AccountFactory.cs

@@ -0,0 +1,108 @@
+using System.Diagnostics;
+using GraphQL;
+using Speckle.InterfaceGenerator;
+using Speckle.Sdk.Api.GraphQL;
+using Speckle.Sdk.Api.GraphQL.Models;
+
+namespace Speckle.Sdk.Credentials;
+
+public partial interface IAccountFactory
+{
+  internal Task<ActiveUserServerInfoResponse> GetUserServerInfo(Uri serverUrl, string? authToken, CancellationToken ct);
+}
+
+[GenerateAutoInterface]
+public sealed class AccountFactory(IGraphQLClientFactory graphQLClientFactory) : IAccountFactory
+{
+  /// <summary>
+  /// Gets the User and Server info required for <see cref="Account"/> object creation
+  /// </summary>
+  /// <param name="serverUrl"></param>
+  /// <param name="authToken">If <see lang="null"/>, the server will respond with a <see lang="null"/> <see cref="UserInfo"/></param>
+  /// <param name="cancellationToken"></param>
+  /// <returns></returns>
+  /// <inheritdoc cref="GetUserServerInfoInternal"/>
+  [DebuggerStepThrough]
+  async Task<ActiveUserServerInfoResponse> IAccountFactory.GetUserServerInfo(
+    Uri serverUrl,
+    string? authToken,
+    CancellationToken cancellationToken
+  ) => await GetUserServerInfoInternal(serverUrl, authToken, cancellationToken).ConfigureAwait(false);
+
+  /// <exception cref="SpeckleException">Server could not find user info given the speckleToken, suggests expired or non-existent user</exception>
+  /// <inheritdoc cref="Speckle.Sdk.Api.GraphQL.GraphQLErrorHandler.EnsureGraphQLSuccess(IReadOnlyCollection{GraphQLError}?)"/>
+  private async Task<ActiveUserServerInfoResponse> GetUserServerInfoInternal(
+    Uri serverUrl,
+    string? authToken,
+    CancellationToken cancellationToken
+  )
+  {
+    using var client = graphQLClientFactory.CreateGraphQLClient(serverUrl, authToken);
+
+    //language=graphql
+    const string QUERY_STRING = """
+      query {
+        activeUser {
+          id
+          name
+          email
+          company
+          avatar
+        }
+        serverInfo {
+          name
+          company
+          description
+          version
+          migration {
+            movedFrom
+            movedTo
+          }
+        }
+      }
+      """;
+
+    var request = new GraphQLRequest { Query = QUERY_STRING };
+
+    var response = await client
+      .SendQueryAsync<ActiveUserServerInfoResponse>(request, cancellationToken)
+      .ConfigureAwait(false);
+
+    response.EnsureGraphQLSuccess();
+
+    ServerInfo serverInfo = response.Data.serverInfo;
+    serverInfo.url = serverUrl.ToString().TrimEnd('/');
+
+    return response.Data;
+  }
+
+  /// <summary>
+  /// Creates a new <see cref="Account"/> object by fetching the required server/user information from the specified server
+  /// </summary>
+  /// <remarks>
+  /// This does not create a new account on the server, nor does it read/write from the SQLite DB. For that see <see cref="AccountManager"/>.
+  /// This is just a Factory pattern around an <see cref="Account"/> object
+  /// </remarks>
+  /// <exception cref="SpeckleException">Server could not find user info given the speckleToken, suggests expired or non-existent user</exception>
+  /// <inheritdoc cref="Speckle.Sdk.Api.GraphQL.GraphQLErrorHandler.EnsureGraphQLSuccess(IReadOnlyCollection{GraphQLError}?)"/>
+  public async Task<Account> CreateAccount(
+    Uri serverUrl,
+    string speckleToken,
+    string? refreshToken = null,
+    CancellationToken cancellationToken = default
+  )
+  {
+    var res = await GetUserServerInfoInternal(serverUrl, speckleToken, cancellationToken).ConfigureAwait(false);
+    if (res.activeUser == null)
+    {
+      throw new SpeckleException("GraphQL response indicated that the ActiveUser could not be found");
+    }
+    return new Account()
+    {
+      token = speckleToken,
+      refreshToken = refreshToken,
+      serverInfo = res.serverInfo,
+      userInfo = res.activeUser,
+    };
+  }
+}

src/Speckle.Sdk/Credentials/AccountManager.cs

@@ -12,7 +12,6 @@ using Speckle.Newtonsoft.Json;
 using Speckle.Sdk.Api.GraphQL;
 using Speckle.Sdk.Api.GraphQL.Models;
 using Speckle.Sdk.Api.GraphQL.Models.Responses;
-using Speckle.Sdk.Api.GraphQL.Serializer;
 using Speckle.Sdk.Common;
 using Speckle.Sdk.Helpers;
 using Speckle.Sdk.Logging;
@@ -30,7 +29,9 @@ public partial interface IAccountManager : IDisposable;
 public sealed class AccountManager(
   ISpeckleApplication application,
   ILogger<AccountManager> logger,
+  IGraphQLClientFactory graphQLClientFactory,
   ISpeckleHttp speckleHttp,
+  IAccountFactory accountFactory,
   ISqLiteJsonCacheManagerFactory sqLiteJsonCacheManagerFactory
 ) : IAccountManager
 {
@@ -58,39 +59,12 @@ public sealed class AccountManager(
   /// <exception cref="AggregateException"><inheritdoc cref="GraphQLErrorHandler.EnsureGraphQLSuccess(IGraphQLResponse)"/></exception>
   public async Task<ServerInfo> GetServerInfo(Uri server, CancellationToken cancellationToken = default)
   {
-    using var httpClient = speckleHttp.CreateHttpClient();
+    using var gqlClient = graphQLClientFactory.CreateGraphQLClient(server, null);
 
-    using var gqlClient = new GraphQLHttpClient(
-      new GraphQLHttpClientOptions
-      {
-        EndPoint = new Uri(server, "/graphql"),
-        UseWebSocketForQueriesAndMutations = false,
-      },
-      new NewtonsoftJsonSerializer(),
-      httpClient
-    );
+    //lang=graphql
+    const string QUERY_STRING = "query { serverInfo { name company migration { movedFrom movedTo } } }";
 
-    System.Version version = await gqlClient
-      .GetServerVersion(cancellationToken: cancellationToken)
-      .ConfigureAwait(false);
-
-    // serverMigration property was added in 2.18.5, so only query for it
-    // if the server has been updated past that version
-    System.Version serverMigrationVersion = new(2, 18, 5);
-
-    string queryString;
-    if (version >= serverMigrationVersion)
-    {
-      //language=graphql
-      queryString = "query { serverInfo { name company migration { movedFrom movedTo } } }";
-    }
-    else
-    {
-      //language=graphql
-      queryString = "query { serverInfo { name company } }";
-    }
-
-    var request = new GraphQLRequest { Query = queryString };
+    var request = new GraphQLRequest { Query = QUERY_STRING };
 
     var response = await gqlClient.SendQueryAsync<ServerInfoResponse>(request, cancellationToken).ConfigureAwait(false);
 
@@ -98,7 +72,6 @@ public sealed class AccountManager(
 
     ServerInfo serverInfo = response.Data.serverInfo;
     serverInfo.url = server.ToString().TrimEnd('/');
-    serverInfo.frontend2 = await IsFrontend2Server(server).ConfigureAwait(false);
 
     return response.Data.serverInfo;
   }
@@ -113,13 +86,8 @@ public sealed class AccountManager(
   /// <exception cref="AggregateException"><inheritdoc cref="GraphQLErrorHandler.EnsureGraphQLSuccess(IGraphQLResponse)"/></exception>
   public async Task<UserInfo> GetUserInfo(string token, Uri server, CancellationToken cancellationToken = default)
   {
-    using var httpClient = speckleHttp.CreateHttpClient(authorizationToken: token);
+    using var gqlClient = graphQLClientFactory.CreateGraphQLClient(server, token);
 
-    using var gqlClient = new GraphQLHttpClient(
-      new GraphQLHttpClientOptions { EndPoint = new Uri(server, "/graphql") },
-      new NewtonsoftJsonSerializer(),
-      httpClient
-    );
     //language=graphql
     const string QUERY = """
       query { 
@@ -142,59 +110,6 @@ public sealed class AccountManager(
     return response.Data.data;
   }
 
-  /// <summary>
-  /// Gets basic user and server information given a token and a server.
-  /// </summary>
-  /// <param name="token"></param>
-  /// <param name="server">Server URL</param>
-  /// <returns></returns>
-  internal async Task<ActiveUserServerInfoResponse> GetUserServerInfo(
-    string token,
-    Uri server,
-    CancellationToken ct = default
-  )
-  {
-    using var httpClient = speckleHttp.CreateHttpClient(authorizationToken: token);
-
-    using var client = new GraphQLHttpClient(
-      new GraphQLHttpClientOptions { EndPoint = new Uri(server, "/graphql") },
-      new NewtonsoftJsonSerializer(),
-      httpClient
-    );
-
-    System.Version version = await client.GetServerVersion(ct).ConfigureAwait(false);
-
-    // serverMigration property was added in 2.18.5, so only query for it
-    // if the server has been updated past that version
-    System.Version serverMigrationVersion = new(2, 18, 5);
-
-    string queryString;
-    if (version >= serverMigrationVersion)
-    {
-      //language=graphql
-      queryString =
-        "query { activeUser { id name email company avatar streams { totalCount } commits { totalCount } } serverInfo { name company adminContact description version migration { movedFrom movedTo } } }";
-    }
-    else
-    {
-      //language=graphql
-      queryString =
-        "query { activeUser { id name email company avatar streams { totalCount } commits { totalCount } } serverInfo { name company adminContact description version } }";
-    }
-
-    var request = new GraphQLRequest { Query = queryString };
-
-    var response = await client.SendQueryAsync<ActiveUserServerInfoResponse>(request, ct).ConfigureAwait(false);
-
-    response.EnsureGraphQLSuccess();
-
-    ServerInfo serverInfo = response.Data.serverInfo;
-    serverInfo.url = server.ToString().TrimEnd('/');
-    serverInfo.frontend2 = await IsFrontend2Server(server).ConfigureAwait(false);
-
-    return response.Data;
-  }
-
   /// <summary>
   /// The Default Server URL for authentication, can be overridden by placing a file with the alternatrive url in the Speckle folder or with an ENV_VAR
   /// </summary>
@@ -254,7 +169,6 @@ public sealed class AccountManager(
     account.serverInfo.migration.movedTo = null;
     account.serverInfo.migration.movedFrom = new Uri(account.serverInfo.url);
     account.serverInfo.url = upgradeUri.ToString().TrimEnd('/');
-    account.serverInfo.frontend2 = true;
 
     // setting the id to null will force it to be recreated
     account.id = null!; //TODO this is gross so remove when id is nullable
@@ -410,11 +324,11 @@ public sealed class AccountManager(
       try
       {
         Uri url = new(account.serverInfo.url);
-        var userServerInfo = await GetUserServerInfo(account.token, url, ct).ConfigureAwait(false);
+        var userServerInfo = await accountFactory.GetUserServerInfo(url, account.token, ct).ConfigureAwait(false);
 
         //the token has expired
         //TODO: once we get a token expired exception from the server use that instead
-        if (userServerInfo?.activeUser == null || userServerInfo.serverInfo == null)
+        if (userServerInfo.activeUser == null || userServerInfo.serverInfo == null)
         {
           // We were initially was handling refresh token here bc quite a while ago server was returning null
           // for activeUser and serverInfo instead of throwing exception. In short, our logic moved into catch block to cover both.
@@ -635,16 +549,13 @@ public sealed class AccountManager(
     try
     {
       var tokenResponse = await GetToken(accessCode, challenge, server).ConfigureAwait(false);
-      var userResponse = await GetUserServerInfo(tokenResponse.token, server).ConfigureAwait(false);
 
-      var account = new Account
-      {
-        token = tokenResponse.token,
-        refreshToken = tokenResponse.refreshToken,
-        isDefault = !GetAccounts().Any(),
-        serverInfo = userResponse.serverInfo,
-        userInfo = userResponse.activeUser,
-      };
+      var account = await accountFactory
+        .CreateAccount(server, tokenResponse.token, tokenResponse.refreshToken)
+        .ConfigureAwait(false);
+
+      account.isDefault = !GetAccounts().Any();
+
       logger.LogInformation("Successfully created account for {serverUrl}", server);
 
       return account;
@@ -781,7 +692,7 @@ public sealed class AccountManager(
     }
   }
 
-  private async Task<TokenExchangeResponse> GetRefreshedToken(string refreshToken, Uri server, string app = "sca")
+  private async Task<TokenExchangeResponse> GetRefreshedToken(string? refreshToken, Uri server, string app = "sca")
   {
     try
     {
@@ -808,38 +719,6 @@ public sealed class AccountManager(
     }
   }
 
-  /// <summary>
-  /// Sends a simple get request to the <paramref name="server"/>, and checks the response headers for a <c>"x-speckle-frontend-2"</c> <see cref="Boolean"/> value
-  /// </summary>
-  /// <param name="server">Server endpoint to get header</param>
-  /// <returns><see langword="true"/> if response contains FE2 header and the value was <see langword="true"/></returns>
-  /// <exception cref="SpeckleException">response contained FE2 header, but the value was <see langword="null"/>, empty, or not parseable to a <see cref="Boolean"/></exception>
-  /// <exception cref="System.Net.Http.HttpRequestException">Request to <paramref name="server"/> failed to send or response was not successful</exception>
-  private async Task<bool> IsFrontend2Server(Uri server)
-  {
-    using var httpClient = speckleHttp.CreateHttpClient();
-
-    var response = await speckleHttp.HttpPing(server).ConfigureAwait(false);
-
-    var headers = response.Headers;
-    const string HEADER = "x-speckle-frontend-2";
-    if (!headers.TryGetValues(HEADER, out IEnumerable<string>? values))
-    {
-      return false;
-    }
-
-    string? headerValue = values.FirstOrDefault();
-
-    if (!bool.TryParse(headerValue, out bool value))
-    {
-      throw new SpeckleException(
-        $"Headers contained {HEADER} header, but value {headerValue} could not be parsed to a bool"
-      );
-    }
-
-    return value;
-  }
-
   private static string GenerateChallenge()
   {
 #if NET8_0

src/Speckle.Sdk/Credentials/GraphQLClientFactory.cs

@@ -0,0 +1,91 @@
+using System.Net.WebSockets;
+using System.Reflection;
+using GraphQL.Client.Http;
+using Microsoft.Extensions.Logging;
+using Speckle.InterfaceGenerator;
+using Speckle.Newtonsoft.Json;
+using Speckle.Newtonsoft.Json.Serialization;
+using Speckle.Sdk.Api.GraphQL.Serializer;
+using Speckle.Sdk.Helpers;
+
+namespace Speckle.Sdk.Credentials;
+
+[GenerateAutoInterface]
+public class GraphQLClientFactory(
+  ISpeckleApplication application,
+  ISpeckleHttp speckleHttp,
+  ILogger<GraphQLClientFactory> logger
+) : IGraphQLClientFactory
+{
+  /// <summary>
+  /// <inheritdoc cref="CreateGraphQLClient(Uri, string)"/>
+  /// </summary>
+  /// <param name="account">The account to use for authentication</param>
+  /// <returns></returns>
+  public GraphQLHttpClient CreateGraphQLClient(Account account)
+  {
+    return CreateGraphQLClient(new(account.serverInfo.url), account.token);
+  }
+
+  /// <summary>
+  /// Creates a <see cref="GraphQLHttpClient"/> configured for communication with a Speckle server
+  /// </summary>
+  /// <param name="serverUrl">The base url of the speckle server to communicate with</param>
+  /// <param name="authToken">If provided, all requests will be authenticated</param>
+  /// <returns></returns>
+  public GraphQLHttpClient CreateGraphQLClient(Uri serverUrl, string? authToken)
+  {
+    var gQLClient = new GraphQLHttpClient(
+      new GraphQLHttpClientOptions
+      {
+        EndPoint = new Uri(serverUrl, "/graphql"),
+        UseWebSocketForQueriesAndMutations = false,
+        WebSocketProtocol = "graphql-ws",
+        ConfigureWebSocketConnectionInitPayload = _ =>
+        {
+          return SpeckleHttp.CanAddAuth(authToken, out string? authValue) ? new { Authorization = authValue } : null;
+        },
+      },
+      new NewtonsoftJsonSerializer(
+        new JsonSerializerSettings()
+        {
+          ContractResolver = new CamelCasePropertyNamesContractResolver { IgnoreIsSpecifiedMembers = true }, //(Default)
+          MissingMemberHandling = MissingMemberHandling.Error, //(not default) If you query for a member that doesn't exist, this will throw (except websocket responses see https://github.com/graphql-dotnet/graphql-client/issues/660)
+          NullValueHandling = NullValueHandling.Ignore, //(not default) We won't serialize nulls, as can open more opportunity for conflicting with servers that are old and don't have the latest schema
+          Converters = { new ConstantCaseEnumConverter() }, //(Default) enums will be serialized using the GraphQL const case standard
+        }
+      ),
+      CreateHttpClient(authToken)
+    );
+
+    gQLClient.WebSocketReceiveErrors.Subscribe(ex =>
+    {
+      if (ex is WebSocketException we)
+      {
+        logger.LogError(
+          we,
+          "GraphQL Websocket received an {WebSocketErrorCode} ({NativeErrorCode}) error that has been swallowed",
+          we.WebSocketErrorCode,
+          we.ErrorCode
+        );
+      }
+      else
+      {
+        logger.LogError(ex, "GraphQL Websocket received an error that has been swallowed");
+      }
+    });
+    return gQLClient;
+  }
+
+  private HttpClient CreateHttpClient(string? token)
+  {
+    var httpClient = speckleHttp.CreateHttpClient(timeoutSeconds: 30, authorizationToken: token);
+
+    httpClient.DefaultRequestHeaders.Add("apollographql-client-name", application.ApplicationAndVersion);
+    httpClient.DefaultRequestHeaders.Add(
+      "apollographql-client-version",
+      Assembly.GetExecutingAssembly().GetName().Version?.ToString()
+    );
+    return httpClient;
+  }
+}

src/Speckle.Sdk/Credentials/Responses.cs

@@ -1,10 +1,14 @@
+using Speckle.Newtonsoft.Json;
 using Speckle.Sdk.Api.GraphQL.Models;
 
 namespace Speckle.Sdk.Credentials;
 
 internal sealed class ActiveUserServerInfoResponse
 {
-  public UserInfo activeUser { get; init; }
+  [property: JsonProperty(Required = Required.AllowNull)]
+  public UserInfo? activeUser { get; init; }
+
+  [property: JsonProperty(Required = Required.Always)]
   public ServerInfo serverInfo { get; init; }
 }
 

src/Speckle.Sdk/Helpers/SpeckleHttp.cs

@@ -51,9 +51,7 @@ public class SpeckleHttp(ILogger<SpeckleHttp> logger, ISpeckleHttpClientHandlerF
 
     var client = new HttpClient(speckleHandler)
     {
-      Timeout =
-        Timeout.InfiniteTimeSpan //timeout is configured on the SpeckleHttpClientHandler through policy
-      ,
+      Timeout = Timeout.InfiniteTimeSpan, //timeout is configured on the SpeckleHttpClientHandler through policy
     };
     AddAuthHeader(client, authorizationToken);
     return client;

src/Speckle.Sdk/Host/TypeLoader.cs

@@ -15,10 +15,14 @@ internal static class TypeLoader
   private static ConcurrentDictionary<string, Type> s_cachedTypes = new();
   private static ConcurrentDictionary<Type, string> s_fullTypeStrings = new();
   private static ConcurrentDictionary<PropertyInfo, JsonPropertyAttribute?> s_jsonPropertyAttribute = new();
+  private static readonly ConcurrentDictionary<PropertyInfo, bool> s_obsolete = new();
   private static ConcurrentDictionary<Type, IReadOnlyList<PropertyInfo>> s_propInfoCache = new();
 
   public static IEnumerable<LoadedType> Types => s_availableTypes;
 
+  public static bool IsObsolete(PropertyInfo property) =>
+    s_obsolete.GetOrAdd(property, p => p.IsDefined(typeof(ObsoleteAttribute), true));
+
   public static JsonPropertyAttribute? GetJsonPropertyAttribute(PropertyInfo property) =>
     s_jsonPropertyAttribute.GetOrAdd(property, p => p.GetCustomAttribute<JsonPropertyAttribute>(true));
 

src/Speckle.Sdk/Models/Base.cs

@@ -3,7 +3,6 @@ using System.Diagnostics.CodeAnalysis;
 using System.Reflection;
 using Speckle.Newtonsoft.Json;
 using Speckle.Newtonsoft.Json.Linq;
-using Speckle.Sdk.Common;
 using Speckle.Sdk.Helpers;
 using Speckle.Sdk.Host;
 using Speckle.Sdk.Serialisation;
@@ -92,8 +91,7 @@ public class Base : DynamicBase, ISpeckleObject
     var typedProps = @base.GetInstanceMembers();
     foreach (var prop in typedProps.Where(p => p.CanRead))
     {
-      bool isIgnored =
-        prop.IsDefined(typeof(ObsoleteAttribute), true) || prop.IsDefined(typeof(JsonIgnoreAttribute), true);
+      bool isIgnored = TypeLoader.IsObsolete(prop) || prop.IsDefined(typeof(JsonIgnoreAttribute), true);
       if (isIgnored)
       {
         continue;
@@ -193,30 +191,4 @@ public class Base : DynamicBase, ISpeckleObject
         return count;
     }
   }
-
-  /// <summary>
-  /// Creates a shallow copy of the current base object.
-  /// This operation does NOT copy/duplicate the data inside each prop.
-  /// The new object's property values will be pointers to the original object's property value.
-  /// </summary>
-  /// <returns>A shallow copy of the original object.</returns>
-  public Base ShallowCopy()
-  {
-    Type type = GetType();
-    Base myDuplicate = (Base)Activator.CreateInstance(type).NotNull();
-    myDuplicate.id = id;
-    myDuplicate.applicationId = applicationId;
-
-    foreach (var kvp in GetMembers())
-    {
-      var propertyInfo = type.GetProperty(kvp.Key);
-      if (propertyInfo is not null && !propertyInfo.CanWrite)
-      {
-        continue;
-      }
-      myDuplicate[kvp.Key] = kvp.Value;
-    }
-
-    return myDuplicate;
-  }
 }

src/Speckle.Sdk/Models/DynamicBase.cs

@@ -7,7 +7,7 @@ namespace Speckle.Sdk.Models;
 
 /// <summary>
 /// Base class implementing a bunch of nice dynamic object methods, like adding and removing props dynamically. Makes c# feel like json.
-/// <para>Orginally adapted from Rick Strahl 🤘</para>
+/// <para>Originally adapted from Rick Strahl 🤘</para>
 /// <para>https://weblog.west-wind.com/posts/2012/feb/08/creating-a-dynamic-extensible-c-expando-object</para>
 /// </summary>
 public class DynamicBase : DynamicObject, IDynamicMetaObjectProvider
@@ -84,6 +84,44 @@ public class DynamicBase : DynamicObject, IDynamicMetaObjectProvider
     }
   }
 
+  /// <summary>
+  /// Creates a shallow copy of the current base object.
+  /// This operation does NOT copy/duplicate the data inside each prop.
+  /// The new object's property values will be pointers to the original object's property value.
+  /// </summary>
+  /// <returns>A shallow copy of the original object.</returns>
+  public DynamicBase ShallowCopy()
+  {
+    Type type = GetType();
+    DynamicBase myDuplicate = (DynamicBase)(
+      Activator.CreateInstance(type) ?? throw new SpeckleException($"Failed to create instance of {type.Name}")
+    );
+
+    // Add dynamic members
+    foreach (var kvp in _properties)
+    {
+      myDuplicate._properties[kvp.Key] = kvp.Value;
+    }
+
+    var pinfos = TypeLoader.GetBaseProperties(type).Where(x => !TypeLoader.IsObsolete(x));
+    foreach (var pi in pinfos)
+    {
+      if (pi.CanWrite)
+      {
+        try
+        {
+          pi.SetValue(myDuplicate, pi.GetValue(this));
+        }
+        catch (Exception ex) when (!ex.IsFatal())
+        {
+          throw new SpeckleException($"Failed to set value for {type.Name}.{pi.Name}", ex);
+        }
+      }
+    }
+
+    return myDuplicate;
+  }
+
   /// <inheritdoc />
   /// <summary>
   /// Gets properties via the dot syntax.
@@ -232,7 +270,7 @@ public class DynamicBase : DynamicObject, IDynamicMetaObjectProvider
         .GetBaseProperties(GetType())
         .Where(x =>
         {
-          var hasObsolete = x.IsDefined(typeof(ObsoleteAttribute), true);
+          var hasObsolete = TypeLoader.IsObsolete(x);
 
           // If obsolete is false and prop has obsolete attr
           // OR

src/Speckle.Sdk/SQLite/SQLiteJsonCacheManager.cs

@@ -1,6 +1,7 @@
 using System.Text;
 using Microsoft.Data.Sqlite;
 using Speckle.InterfaceGenerator;
+using Speckle.Sdk.Common;
 using Speckle.Sdk.Dependencies;
 
 namespace Speckle.Sdk.SQLite;
@@ -12,7 +13,26 @@ public sealed class SqLiteJsonCacheManager : ISqLiteJsonCacheManager
 {
   private readonly CacheDbCommandPool _pool;
 
-  public SqLiteJsonCacheManager(string path, int concurrency)
+  public static ISqLiteJsonCacheManager FromMemory(int concurrency) => new SqLiteJsonCacheManager(concurrency);
+
+  private SqLiteJsonCacheManager(int concurrency)
+  {
+    //disable pooling as we pool ourselves
+    var builder = new SqliteConnectionStringBuilder
+    {
+      Pooling = false,
+      DataSource = ":memory:",
+      Cache = SqliteCacheMode.Shared,
+      Mode = SqliteOpenMode.Memory,
+    };
+    _pool = new CacheDbCommandPool(builder.ToString(), concurrency);
+    Initialize();
+  }
+
+  public static ISqLiteJsonCacheManager FromFilePath(string path, int concurrency) =>
+    new SqLiteJsonCacheManager(path, concurrency);
+
+  private SqLiteJsonCacheManager(string path, int concurrency)
   {
     //disable pooling as we pool ourselves
     var builder = new SqliteConnectionStringBuilder { Pooling = false, DataSource = path };
@@ -46,12 +66,6 @@ public sealed class SqLiteJsonCacheManager : ISqLiteJsonCacheManager
         command.ExecuteNonQuery();
       }
 
-      // Insert Optimisations
-
-      //Note / Hack: This setting has the potential to corrupt the db.
-      //cmd = new SqliteCommand("PRAGMA synchronous=OFF;", Connection);
-      //cmd.ExecuteNonQuery();
-
       using (SqliteCommand cmd1 = new("PRAGMA count_changes=OFF;", c))
       {
         cmd1.ExecuteNonQuery();
@@ -120,7 +134,10 @@ public sealed class SqLiteJsonCacheManager : ISqLiteJsonCacheManager
     );
 
   //This does an insert or ignores if already exists
-  public void SaveObject(string id, string json) =>
+  public void SaveObject(string id, string json)
+  {
+    id.NotNullOrWhiteSpace();
+    json.NotNullOrWhiteSpace();
     _pool.Use(
       CacheOperation.InsertOrIgnore,
       command =>
@@ -130,6 +147,7 @@ public sealed class SqLiteJsonCacheManager : ISqLiteJsonCacheManager
         command.ExecuteNonQuery();
       }
     );
+  }
 
   //This does an insert or replaces if already exists
   public void UpdateObject(string id, string json) =>
@@ -148,29 +166,45 @@ public sealed class SqLiteJsonCacheManager : ISqLiteJsonCacheManager
       CacheOperation.BulkInsertOrIgnore,
       cmd =>
       {
-        CreateBulkInsert(cmd, items);
-        return cmd.ExecuteNonQuery();
+        if (CreateBulkInsert(cmd, items))
+        {
+          cmd.ExecuteNonQuery();
+        }
       }
     );
 
-  private void CreateBulkInsert(SqliteCommand cmd, IEnumerable<(string id, string json)> items)
+  private bool CreateBulkInsert(SqliteCommand cmd, IEnumerable<(string id, string json)> items)
   {
     StringBuilder sb = Pools.StringBuilders.Get();
-    sb.AppendLine(CacheDbCommands.Commands[(int)CacheOperation.BulkInsertOrIgnore]);
-    int i = 0;
-    foreach (var (id, json) in items)
+    try
     {
-      sb.Append($"(@key{i}, @value{i}),");
-      cmd.Parameters.AddWithValue($"@key{i}", id);
-      cmd.Parameters.AddWithValue($"@value{i}", json);
-      i++;
-    }
-    sb.Remove(sb.Length - 1, 1);
-    sb.Append(';');
+      sb.AppendLine(CacheDbCommands.Commands[(int)CacheOperation.BulkInsertOrIgnore]);
+      int i = 0;
+      foreach (var (id, json) in items)
+      {
+        sb.Append($"(@key{i}, @value{i}),");
+        cmd.Parameters.AddWithValue($"@key{i}", id);
+        cmd.Parameters.AddWithValue($"@value{i}", json);
+        i++;
+      }
+
+      if (i == 0)
+      {
+        return false;
+      }
+
+      sb.Remove(sb.Length - 1, 1);
+      sb.Append(';');
 #pragma warning disable CA2100
-    cmd.CommandText = sb.ToString();
+      cmd.CommandText = sb.ToString();
 #pragma warning restore CA2100
-    Pools.StringBuilders.Return(sb);
+    }
+    finally
+    {
+      Pools.StringBuilders.Return(sb);
+    }
+
+    return true;
   }
 
   public bool HasObject(string objectId) =>

src/Speckle.Sdk/SQLite/SqLiteJsonCacheManagerFactory.cs

@@ -1,19 +1,20 @@
 using Speckle.InterfaceGenerator;
+using Speckle.Sdk.Caching;
 using Speckle.Sdk.Logging;
-using Speckle.Sdk.Serialisation.Utilities;
 
 namespace Speckle.Sdk.SQLite;
 
 [GenerateAutoInterface]
-public class SqLiteJsonCacheManagerFactory : ISqLiteJsonCacheManagerFactory
+public class SqLiteJsonCacheManagerFactory(IModelCacheManager modelCacheManager) : ISqLiteJsonCacheManagerFactory
 {
   public const int INITIAL_CONCURRENCY = 4;
 
-  private ISqLiteJsonCacheManager Create(string path, int concurrency) => new SqLiteJsonCacheManager(path, concurrency);
+  private ISqLiteJsonCacheManager Create(string path, int concurrency) =>
+    SqLiteJsonCacheManager.FromFilePath(path, concurrency);
 
   public ISqLiteJsonCacheManager CreateForUser(string scope) =>
     Create(Path.Combine(SpecklePathProvider.UserApplicationDataPath(), "Speckle", $"{scope}.db"), 1);
 
   public ISqLiteJsonCacheManager CreateFromStream(string streamId) =>
-    Create(SqlitePaths.GetDBPath(streamId), INITIAL_CONCURRENCY);
+    Create(modelCacheManager.GetStreamPath(streamId), INITIAL_CONCURRENCY);
 }

src/Speckle.Sdk/Serialisation/IdGenerator.cs

@@ -1,5 +1,5 @@
 using System.Diagnostics.Contracts;
-using Speckle.Sdk.Helpers;
+using Speckle.Sdk.Common;
 using Speckle.Sdk.Models;
 
 namespace Speckle.Sdk.Serialisation;
@@ -10,9 +10,9 @@ public static class IdGenerator
   public static Id ComputeId(Json serialized)
   {
 #if NET6_0_OR_GREATER
-    string hash = Crypt.Sha256(serialized.Value.AsSpan(), length: HashUtility.HASH_LENGTH);
+    string hash = Sha256.GetString(serialized.Value.AsSpan(), length: HashUtility.HASH_LENGTH);
 #else
-    string hash = Crypt.Sha256(serialized.Value, length: HashUtility.HASH_LENGTH);
+    string hash = Sha256.GetString(serialized.Value, length: HashUtility.HASH_LENGTH);
 #endif
     return new Id(hash);
   }

src/Speckle.Sdk/Serialisation/SerializationResult.cs

@@ -2,13 +2,25 @@
 
 public readonly record struct SerializationResult(Json Json, Id? Id);
 
-public readonly record struct Json(string Value)
+public readonly record struct Json
 {
+  public Json(string json)
+  {
+    Value = json ?? throw new ArgumentNullException(nameof(json));
+  }
+
   public override string ToString() => Value;
+
+  public string Value { get; }
 }
 
-public readonly record struct Id(string Value)
+public readonly record struct Id
 {
+  public Id(string id)
+  {
+    Value = id ?? throw new ArgumentNullException(nameof(id));
+  }
+
   public override string ToString() => Value;
 
   public bool Equals(Id? other)
@@ -22,4 +34,6 @@ public readonly record struct Id(string Value)
   }
 
   public override int GetHashCode() => Value.GetHashCode();
+
+  public string Value { get; }
 }

src/Speckle.Sdk/Serialisation/Utilities/ClosureParser.cs

@@ -5,7 +5,10 @@ namespace Speckle.Sdk.Serialisation.Utilities;
 
 public static class ClosureParser
 {
-  public static IReadOnlyList<(string, int)> GetClosures(string json, CancellationToken cancellationToken)
+  public static IReadOnlyList<(string, int)> GetClosures(string json, CancellationToken cancellationToken) =>
+    GetClosuresPrivate(json, cancellationToken);
+
+  private static List<(string, int)> GetClosuresPrivate(string json, CancellationToken cancellationToken)
   {
     try
     {
@@ -31,10 +34,17 @@ public static class ClosureParser
     return [];
   }
 
+  public static IReadOnlyList<(string, int)> GetClosuresSorted(string json, CancellationToken cancellationToken)
+  {
+    var closures = GetClosuresPrivate(json, cancellationToken);
+    closures.Sort((a, b) => b.Item2.CompareTo(a.Item2));
+    return closures;
+  }
+
   public static IEnumerable<string> GetChildrenIds(string json, CancellationToken cancellationToken) =>
     GetClosures(json, cancellationToken).Select(x => x.Item1);
 
-  private static IReadOnlyList<(string, int)> ReadObject(JsonTextReader reader, CancellationToken cancellationToken)
+  private static List<(string, int)> ReadObject(JsonTextReader reader, CancellationToken cancellationToken)
   {
     reader.Read();
     while (reader.TokenType != JsonToken.EndObject)

src/Speckle.Sdk/Serialisation/Utilities/SqlitePaths.cs

@@ -1,30 +0,0 @@
-using Speckle.Sdk.Logging;
-using Speckle.Sdk.Transports;
-
-namespace Speckle.Sdk.Serialisation.Utilities;
-
-public static class SqlitePaths
-{
-  private const string APPLICATION_NAME = "Speckle";
-  private const string DATA_FOLDER = "Projects";
-  private static readonly string basePath = SpecklePathProvider.UserApplicationDataPath();
-
-  public static string BlobStorageFolder =>
-    SpecklePathProvider.BlobStoragePath(Path.Combine(basePath, APPLICATION_NAME));
-
-  public static string GetDBPath(string streamId)
-  {
-    var dir = Path.Combine(basePath, APPLICATION_NAME, DATA_FOLDER);
-    var db = Path.Combine(dir, $"{streamId}.db");
-    try
-    {
-      Directory.CreateDirectory(dir); //ensure dir is there
-      return db;
-    }
-    catch (Exception ex)
-      when (ex is ArgumentException or IOException or UnauthorizedAccessException or NotSupportedException)
-    {
-      throw new TransportException($"Path was invalid or could not be created {db}", ex);
-    }
-  }
-}

src/Speckle.Sdk/Serialisation/V2/DeserializeProcessFactory.cs

@@ -7,6 +7,8 @@ using Speckle.Sdk.Transports;
 
 namespace Speckle.Sdk.Serialisation.V2;
 
+/// <seealso cref="DeserializeProcessFactoryNoCache"/>
+/// <seealso cref="DeserializeProcess"/>
 [GenerateAutoInterface]
 public class DeserializeProcessFactory(
   IBaseDeserializer baseDeserializer,

src/Speckle.Sdk/Serialisation/V2/DeserializeProcessFactoryNoCache.cs

@@ -0,0 +1,60 @@
+using System.Collections.Concurrent;
+using Microsoft.Extensions.Logging;
+using Speckle.InterfaceGenerator;
+using Speckle.Sdk.Serialisation.V2.Receive;
+using Speckle.Sdk.Transports;
+
+namespace Speckle.Sdk.Serialisation.V2;
+
+/// <summary>
+/// A version of <seealso cref="DeserializeProcessFactory"/> but without any SQLite usage.
+/// This class doesn't have a matching <seealso cref="GenerateAutoInterfaceAttribute"/>, so will not be registered by <seealso cref="ServiceRegistration"/> automatically
+/// Instead consumers can register this to override the default <seealso cref="DeserializeProcessFactory"/>
+/// </summary>
+/// <seealso cref="DeserializeProcessFactory"/>
+/// <seealso cref="DeserializeProcess"/>
+public sealed class DeserializeProcessFactoryNoCache(
+  IBaseDeserializer baseDeserializer,
+  IServerObjectManagerFactory serverObjectManagerFactory,
+  ILoggerFactory loggerFactory
+) : IDeserializeProcessFactory
+{
+  public IDeserializeProcess CreateDeserializeProcess(
+    Uri url,
+    string streamId,
+    string? authorizationToken,
+    IProgress<ProgressArgs>? progress,
+    CancellationToken cancellationToken,
+    DeserializeProcessOptions? options = null
+  )
+  {
+    var sqLiteJsonCacheManager = new MemoryJsonCacheManager(new());
+    var serverObjectManager = serverObjectManagerFactory.Create(url, streamId, authorizationToken);
+    return new DeserializeProcess(
+      sqLiteJsonCacheManager,
+      serverObjectManager,
+      progress,
+      baseDeserializer,
+      loggerFactory,
+      cancellationToken,
+      options
+    );
+  }
+
+  public IDeserializeProcess CreateDeserializeProcess(
+    ConcurrentDictionary<Id, Json> jsonCache,
+    ConcurrentDictionary<string, string> objects,
+    IProgress<ProgressArgs>? progress,
+    CancellationToken cancellationToken,
+    DeserializeProcessOptions? options = null
+  ) =>
+    new DeserializeProcess(
+      new MemoryJsonCacheManager(jsonCache),
+      new MemoryServerObjectManager(objects),
+      progress,
+      baseDeserializer,
+      loggerFactory,
+      cancellationToken,
+      options
+    );
+}

src/Speckle.Sdk/Serialisation/V2/Receive/DeserializeProcess.cs

@@ -41,7 +41,13 @@ public sealed class DeserializeProcess(
     :
 #pragma warning disable CA2000
   this(
-      new ObjectLoader(sqLiteJsonCacheManager, serverObjectManager, progress, cancellationToken),
+      new ObjectLoader(
+        sqLiteJsonCacheManager,
+        serverObjectManager,
+        progress,
+        loggerFactory.CreateLogger<ObjectLoader>(),
+        cancellationToken
+      ),
       progress,
       baseDeserializer,
       loggerFactory,