diff --git a/NexusMods.App.sln b/NexusMods.App.sln
index 5086507845..53661c13bd 100644
--- a/NexusMods.App.sln
+++ b/NexusMods.App.sln
@@ -214,7 +214,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Interprocess", "Interproces
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NexusMods.Settings.Tests", "tests\NexusMods.Settings.Tests\NexusMods.Settings.Tests.csproj", "{0D289DCE-1B17-4B63-B8B3-47CB852BF5B4}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NexusMods.Abstractions.Library", "src\Abstractions\NexusMods.Abstractions.Library\NexusMods.Abstractions.Library.csproj", "{0044D340-E435-489C-A425-139AAB2EA205}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NexusMods.Abstractions.Library.Models", "src\Abstractions\NexusMods.Abstractions.Library.Models\NexusMods.Abstractions.Library.Models.csproj", "{0044D340-E435-489C-A425-139AAB2EA205}"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NexusMods.Abstractions.NexusModsLibrary", "src\Abstractions\NexusMods.Abstractions.NexusModsLibrary\NexusMods.Abstractions.NexusModsLibrary.csproj", "{5D85EBB2-755F-4148-BFC4-8D2245A3105B}"
 EndProject
@@ -228,6 +228,12 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NexusMods.Abstractions.Jobs
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NexusMods.Jobs.Tests", "tests\NexusMods.Jobs.Tests\NexusMods.Jobs.Tests.csproj", "{01043F6A-121B-4B3C-A694-B823D9CD0BB0}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NexusMods.Abstractions.Library", "src\Abstractions\NexusMods.Abstractions.Library\NexusMods.Abstractions.Library.csproj", "{C47C59F4-1C6C-4F78-9A27-F328F1C02BF0}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NexusMods.Jobs", "src\NexusMods.Jobs\NexusMods.Jobs.csproj", "{44E6BD8A-7A82-49CC-91FA-AF3B3E5FBEE9}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NexusMods.Abstractions.Library.Installers", "src\Abstractions\NexusMods.Abstractions.Library.Installers\NexusMods.Abstractions.Library.Installers.csproj", "{F6482055-698C-492A-9FC2-0FCDC9FC2E23}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -586,6 +592,18 @@ Global
 		{01043F6A-121B-4B3C-A694-B823D9CD0BB0}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{01043F6A-121B-4B3C-A694-B823D9CD0BB0}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{01043F6A-121B-4B3C-A694-B823D9CD0BB0}.Release|Any CPU.Build.0 = Release|Any CPU
+		{C47C59F4-1C6C-4F78-9A27-F328F1C02BF0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C47C59F4-1C6C-4F78-9A27-F328F1C02BF0}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C47C59F4-1C6C-4F78-9A27-F328F1C02BF0}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C47C59F4-1C6C-4F78-9A27-F328F1C02BF0}.Release|Any CPU.Build.0 = Release|Any CPU
+		{44E6BD8A-7A82-49CC-91FA-AF3B3E5FBEE9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{44E6BD8A-7A82-49CC-91FA-AF3B3E5FBEE9}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{44E6BD8A-7A82-49CC-91FA-AF3B3E5FBEE9}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{44E6BD8A-7A82-49CC-91FA-AF3B3E5FBEE9}.Release|Any CPU.Build.0 = Release|Any CPU
+		{F6482055-698C-492A-9FC2-0FCDC9FC2E23}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{F6482055-698C-492A-9FC2-0FCDC9FC2E23}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{F6482055-698C-492A-9FC2-0FCDC9FC2E23}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{F6482055-698C-492A-9FC2-0FCDC9FC2E23}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -690,6 +708,9 @@ Global
 		{821C1DA9-040E-44F3-BFCA-BF026C3F254B} = {0CB73565-1207-4A56-A79F-6A8E9BBD795C}
 		{D15413CA-E727-40DA-8CD8-29ED052BF427} = {0CB73565-1207-4A56-A79F-6A8E9BBD795C}
 		{01043F6A-121B-4B3C-A694-B823D9CD0BB0} = {52AF9D62-7D5B-4AD0-BA12-86F2AA67428B}
+		{C47C59F4-1C6C-4F78-9A27-F328F1C02BF0} = {0CB73565-1207-4A56-A79F-6A8E9BBD795C}
+		{44E6BD8A-7A82-49CC-91FA-AF3B3E5FBEE9} = {E7BAE287-D505-4D6D-A090-665A64309B2D}
+		{F6482055-698C-492A-9FC2-0FCDC9FC2E23} = {0CB73565-1207-4A56-A79F-6A8E9BBD795C}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {9F9F8352-34DD-42C0-8564-EE9AF34A3501}
diff --git a/src/Abstractions/NexusMods.Abstractions.Games/AGame.cs b/src/Abstractions/NexusMods.Abstractions.Games/AGame.cs
index 9f3ad2b107..1263b63f28 100644
--- a/src/Abstractions/NexusMods.Abstractions.Games/AGame.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Games/AGame.cs
@@ -7,6 +7,7 @@
 using NexusMods.Abstractions.Games.Loadouts;
 using NexusMods.Abstractions.Installers;
 using NexusMods.Abstractions.IO;
+using NexusMods.Abstractions.Library.Installers;
 using NexusMods.Abstractions.Loadouts.Mods;
 using NexusMods.Abstractions.Loadouts.Synchronizers;
 using NexusMods.Abstractions.Serialization;
@@ -70,6 +71,9 @@ protected virtual ILoadoutSynchronizer MakeSynchronizer(IServiceProvider provide
     /// <inheritdoc />
     public virtual IEnumerable<IModInstaller> Installers => _installers.Value;
 
+    /// <inheritdoc />
+    public virtual ILibraryItemInstaller[] LibraryItemInstallers { get; } = [];
+
     /// <inheritdoc/>
     public virtual IDiagnosticEmitter[] DiagnosticEmitters { get; } = Array.Empty<IDiagnosticEmitter>();
 
diff --git a/src/Abstractions/NexusMods.Abstractions.Games/IGame.cs b/src/Abstractions/NexusMods.Abstractions.Games/IGame.cs
index 5edec419d5..92023f7625 100644
--- a/src/Abstractions/NexusMods.Abstractions.Games/IGame.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Games/IGame.cs
@@ -2,6 +2,7 @@
 using NexusMods.Abstractions.GameLocators;
 using NexusMods.Abstractions.Installers;
 using NexusMods.Abstractions.IO;
+using NexusMods.Abstractions.Library.Installers;
 using NexusMods.Abstractions.Loadouts.Mods;
 using NexusMods.Abstractions.Loadouts.Synchronizers;
 using NexusMods.Abstractions.Serialization;
@@ -31,6 +32,11 @@ public interface IGame : ILocatableGame
     /// </summary>
     public IEnumerable<IModInstaller> Installers { get; }
 
+    /// <summary>
+    /// Gets all available installers this game supports.
+    /// </summary>
+    public ILibraryItemInstaller[] LibraryItemInstallers { get; }
+
     /// <summary>
     /// An array of all instances of <see cref="IDiagnosticEmitter"/> supported
     /// by the game.
diff --git a/src/Abstractions/NexusMods.Abstractions.Games/NexusMods.Abstractions.Games.csproj b/src/Abstractions/NexusMods.Abstractions.Games/NexusMods.Abstractions.Games.csproj
index d16acbb31a..161b992b82 100644
--- a/src/Abstractions/NexusMods.Abstractions.Games/NexusMods.Abstractions.Games.csproj
+++ b/src/Abstractions/NexusMods.Abstractions.Games/NexusMods.Abstractions.Games.csproj
@@ -24,6 +24,7 @@
         <ProjectReference Include="..\NexusMods.Abstractions.Activities\NexusMods.Abstractions.Activities.csproj" />
         <ProjectReference Include="..\NexusMods.Abstractions.DiskState\NexusMods.Abstractions.DiskState.csproj" />
         <ProjectReference Include="..\NexusMods.Abstractions.Installers\NexusMods.Abstractions.Installers.csproj" />
+        <ProjectReference Include="..\NexusMods.Abstractions.Library.Installers\NexusMods.Abstractions.Library.Installers.csproj" />
         <ProjectReference Include="..\NexusMods.Abstractions.Loadouts.Synchronizers\NexusMods.Abstractions.Loadouts.Synchronizers.csproj" />
         <ProjectReference Include="..\NexusMods.Abstractions.Loadouts\NexusMods.Abstractions.Loadouts.csproj" />
         <ProjectReference Include="..\NexusMods.Abstractions.NexusWebApi\NexusMods.Abstractions.NexusWebApi.csproj" />
diff --git a/src/Abstractions/NexusMods.Abstractions.Installers/Extensions.cs b/src/Abstractions/NexusMods.Abstractions.Installers/Extensions.cs
index 2f4851e77d..c899a23a7e 100644
--- a/src/Abstractions/NexusMods.Abstractions.Installers/Extensions.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Installers/Extensions.cs
@@ -1,9 +1,6 @@
-using System.Collections.Immutable;
 using NexusMods.Abstractions.FileStore.Trees;
 using NexusMods.Abstractions.GameLocators;
 using NexusMods.Abstractions.Loadouts.Files;
-using NexusMods.Abstractions.Loadouts.Mods;
-using NexusMods.Abstractions.Serialization;
 using NexusMods.MnemonicDB.Abstractions.Models;
 using NexusMods.Paths;
 using NexusMods.Paths.Trees;
diff --git a/src/Abstractions/NexusMods.Abstractions.Installers/IArchiveInstaller.cs b/src/Abstractions/NexusMods.Abstractions.Installers/IArchiveInstaller.cs
index c7a1a044df..b7c6dba0ad 100644
--- a/src/Abstractions/NexusMods.Abstractions.Installers/IArchiveInstaller.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Installers/IArchiveInstaller.cs
@@ -1,7 +1,6 @@
 using NexusMods.Abstractions.Activities;
 using NexusMods.Abstractions.FileStore.Downloads;
 using NexusMods.Abstractions.Loadouts;
-using NexusMods.Abstractions.Loadouts.Ids;
 using NexusMods.Abstractions.Loadouts.Mods;
 
 namespace NexusMods.Abstractions.Installers;
diff --git a/src/Abstractions/NexusMods.Abstractions.Installers/ModInstallerInfo.cs b/src/Abstractions/NexusMods.Abstractions.Installers/ModInstallerInfo.cs
index 0708b0bd80..baa7ad4b11 100644
--- a/src/Abstractions/NexusMods.Abstractions.Installers/ModInstallerInfo.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Installers/ModInstallerInfo.cs
@@ -1,8 +1,6 @@
 using JetBrains.Annotations;
-using NexusMods.Abstractions.FileStore.ArchiveMetadata;
 using NexusMods.Abstractions.FileStore.Downloads;
 using NexusMods.Abstractions.GameLocators;
-using NexusMods.Abstractions.Loadouts.Ids;
 using NexusMods.Abstractions.Loadouts.Mods;
 using ModFileTreeNode = NexusMods.Paths.Trees.KeyedBox<NexusMods.Paths.RelativePath, NexusMods.Abstractions.FileStore.Trees.ModFileTree>;
 
diff --git a/src/Abstractions/NexusMods.Abstractions.Installers/ModInstallerResult.cs b/src/Abstractions/NexusMods.Abstractions.Installers/ModInstallerResult.cs
index 4729381f5a..f3cb3d4ac0 100644
--- a/src/Abstractions/NexusMods.Abstractions.Installers/ModInstallerResult.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Installers/ModInstallerResult.cs
@@ -1,6 +1,4 @@
 using JetBrains.Annotations;
-using NexusMods.Abstractions.DataModel.Entities.Sorting;
-using NexusMods.Abstractions.Loadouts.Ids;
 using NexusMods.Abstractions.Loadouts.Mods;
 using NexusMods.MnemonicDB.Abstractions.Models;
 
diff --git a/src/Abstractions/NexusMods.Abstractions.Installers/NexusMods.Abstractions.Installers.csproj b/src/Abstractions/NexusMods.Abstractions.Installers/NexusMods.Abstractions.Installers.csproj
index d7cee6417e..fa3af61b3d 100644
--- a/src/Abstractions/NexusMods.Abstractions.Installers/NexusMods.Abstractions.Installers.csproj
+++ b/src/Abstractions/NexusMods.Abstractions.Installers/NexusMods.Abstractions.Installers.csproj
@@ -3,7 +3,6 @@
     <Import Project="$([MSBuild]::GetPathOfFileAbove('NuGet.Build.props', '$(MSBuildThisFileDirectory)../'))" />
 
     <ItemGroup>
-        <!-- TODO: This library needs stabilized -->
         <PackageReference Include="TransparentValueObjects" PrivateAssets="all" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
     </ItemGroup>
 
@@ -16,21 +15,6 @@
     </ItemGroup>
 
     <ItemGroup>
-      <Compile Update="ILibraryFileInstaller.cs">
-        <DependentUpon>ILibraryItemInstaller.cs</DependentUpon>
-      </Compile>
-      <Compile Update="ILibraryArchiveInstaller.cs">
-        <DependentUpon>ILibraryItemInstaller.cs</DependentUpon>
-      </Compile>
-      <Compile Update="ALibraryItemInstaller.cs">
-        <DependentUpon>ILibraryItemInstaller.cs</DependentUpon>
-      </Compile>
-      <Compile Update="ALibraryFileInstaller.cs">
-        <DependentUpon>ILibraryFileInstaller.cs</DependentUpon>
-      </Compile>
-      <Compile Update="ALibraryArchiveInstaller.cs">
-        <DependentUpon>ILibraryArchiveInstaller.cs</DependentUpon>
-      </Compile>
       <Compile Update="AModInstaller.cs">
         <DependentUpon>IModInstaller.cs</DependentUpon>
       </Compile>
diff --git a/src/Abstractions/NexusMods.Abstractions.Jobs/AJob.cs b/src/Abstractions/NexusMods.Abstractions.Jobs/AJob.cs
index 26ddaecb4a..53f9b45691 100644
--- a/src/Abstractions/NexusMods.Abstractions.Jobs/AJob.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Jobs/AJob.cs
@@ -42,7 +42,8 @@ public abstract class AJob : IJobGroup, IDisposable, IAsyncDisposable
     protected AJob(
         MutableProgress progress,
         IJobGroup? group = default,
-        IJobWorker? worker = default)
+        IJobWorker? worker = default,
+        IJobMonitor? monitor = default)
     {
         Id = JobId.NewId();
         Status = JobStatus.None;
@@ -64,6 +65,8 @@ protected AJob(
         _collection = [];
         _observableCollection = new ObservableCollection<IJob>(_collection);
         ObservableCollection = new ReadOnlyObservableCollection<IJob>(_observableCollection);
+
+        monitor?.RegisterJob(this);
     }
 
     public IEnumerator<IJob> GetEnumerator() => _collection.GetEnumerator();
diff --git a/src/Abstractions/NexusMods.Abstractions.Jobs/IJobMonitor.cs b/src/Abstractions/NexusMods.Abstractions.Jobs/IJobMonitor.cs
new file mode 100644
index 0000000000..91592501ee
--- /dev/null
+++ b/src/Abstractions/NexusMods.Abstractions.Jobs/IJobMonitor.cs
@@ -0,0 +1,27 @@
+using System.Collections.ObjectModel;
+using DynamicData;
+using JetBrains.Annotations;
+
+namespace NexusMods.Abstractions.Jobs;
+
+/// <summary>
+/// Represents a monitor for jobs.
+/// </summary>
+[PublicAPI]
+public interface IJobMonitor
+{
+    /// <summary>
+    /// Gets an observable collection containing every job the monitor knows about.
+    /// </summary>
+    ReadOnlyObservableCollection<IJob> Jobs { get; }
+
+    /// <summary>
+    /// Gets an observable with changeset for jobs of type <typeparamref name="TJob"/>.
+    /// </summary>
+    IObservable<IChangeSet<TJob, JobId>> GetObservableChangeSet<TJob>() where TJob : IJob;
+
+    /// <summary>
+    /// Registers a job with the monitor.
+    /// </summary>
+    void RegisterJob(IJob job);
+}
diff --git a/src/Abstractions/NexusMods.Abstractions.Jobs/JobResult.cs b/src/Abstractions/NexusMods.Abstractions.Jobs/JobResult.cs
index 8b082bf9c7..e5f85bdd09 100644
--- a/src/Abstractions/NexusMods.Abstractions.Jobs/JobResult.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Jobs/JobResult.cs
@@ -78,18 +78,25 @@ public bool TryGetFailed([NotNullWhen(true)] out JobResultFailed? failed)
         return true;
     }
 
+    /// <summary>
+    /// Returns the data in the completed result or thrown an exception.
+    /// </summary>
+    /// <exception cref="InvalidOperationException">The result isn't of type <see cref="JobResultCompleted{TData}"/></exception>
     public TData RequireData<TData>()
     where TData : notnull
     {
         if (!TryGetCompleted(out var completed))
-            throw new InvalidOperationException($"JobResult is of type `{ResultType}` but expected `{JobResultType.Completed}`");
+            throw new InvalidOperationException($"JobResult is of type `{ResultType}` but expected `{JobResultType.Completed}`: `{ToString()}`");
 
         if (!completed.TryGetData<TData>(out var data))
-            throw new InvalidOperationException("Completed JobResult doesn't have data!");
+            throw new InvalidOperationException($"Completed JobResult doesn't have data: `{ToString()}`");
 
         return data;
     }
 
+    /// <summary>
+    /// Creates a failed job result from an exception.
+    /// </summary>
     [StackTraceHidden]
     public static JobResult CreateFailed(Exception exception)
     {
@@ -99,15 +106,23 @@ public static JobResult CreateFailed(Exception exception)
         });
     }
 
+    /// <summary>
+    /// Creates a failed job result from an error message.
+    /// </summary>
     [StackTraceHidden]
     public static JobResult CreateFailed(string message)
     {
         return CreateFailed(new Exception(message));
     }
 
+    /// <summary>
+    /// Creates a cancelled job result.
+    /// </summary>
     [StackTraceHidden] public static JobResult CreateCancelled() => new(new JobResultCancelled());
-    [StackTraceHidden] public static JobResult CreateCompleted() => new(new JobResultCompleted());
 
+    /// <summary>
+    /// Creates a completed job result with data.
+    /// </summary>
     [StackTraceHidden]
     public static JobResult CreateCompleted<TData>(TData data)
         where TData : notnull
@@ -117,4 +132,14 @@ public static JobResult CreateCompleted<TData>(TData data)
             Data = data,
         });
     }
+
+    /// <inheritdoc/>
+    public override string ToString()
+    {
+        return _value.Match(
+            f0: x => x.ToString(),
+            f1: x => x.ToString(),
+            f2: x => x.ToString()
+        );
+    }
 }
diff --git a/src/Abstractions/NexusMods.Abstractions.Jobs/JobWorker.cs b/src/Abstractions/NexusMods.Abstractions.Jobs/JobWorker.cs
index 1a62d3f384..2099b49caa 100644
--- a/src/Abstractions/NexusMods.Abstractions.Jobs/JobWorker.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Jobs/JobWorker.cs
@@ -12,7 +12,7 @@ public delegate Task<TData> ExecuteAsyncDelegateWithData<TJob, TData>(TJob job,
     public delegate Task<JobResult> ExecuteAsyncDelegate<TJob>(TJob job, AJobWorker<TJob> worker, CancellationToken cancellationToken)
         where TJob : AJob;
 
-    public static AJobWorker<TJob> Create<TJob, TData>(TJob job, ExecuteAsyncDelegateWithData<TJob, TData> func)
+    public static AJobWorker<TJob> CreateWithData<TJob, TData>(TJob job, ExecuteAsyncDelegateWithData<TJob, TData> func)
     where TJob : AJob
     where TData : notnull
     {
diff --git a/src/Abstractions/NexusMods.Abstractions.Installers/ALibraryArchiveInstaller.cs b/src/Abstractions/NexusMods.Abstractions.Library.Installers/ALibraryArchiveInstaller.cs
similarity index 95%
rename from src/Abstractions/NexusMods.Abstractions.Installers/ALibraryArchiveInstaller.cs
rename to src/Abstractions/NexusMods.Abstractions.Library.Installers/ALibraryArchiveInstaller.cs
index b503cb9e2c..e93d9ed50e 100644
--- a/src/Abstractions/NexusMods.Abstractions.Installers/ALibraryArchiveInstaller.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Library.Installers/ALibraryArchiveInstaller.cs
@@ -1,10 +1,10 @@
 using JetBrains.Annotations;
 using Microsoft.Extensions.Logging;
-using NexusMods.Abstractions.Library;
+using NexusMods.Abstractions.Library.Models;
 using NexusMods.Abstractions.Loadouts;
 using NexusMods.MnemonicDB.Abstractions;
 
-namespace NexusMods.Abstractions.Installers;
+namespace NexusMods.Abstractions.Library.Installers;
 
 /// <summary>
 /// Base implementation of <see cref="ILibraryArchiveInstaller"/>.
diff --git a/src/Abstractions/NexusMods.Abstractions.Installers/ALibraryFileInstaller.cs b/src/Abstractions/NexusMods.Abstractions.Library.Installers/ALibraryFileInstaller.cs
similarity index 95%
rename from src/Abstractions/NexusMods.Abstractions.Installers/ALibraryFileInstaller.cs
rename to src/Abstractions/NexusMods.Abstractions.Library.Installers/ALibraryFileInstaller.cs
index 601542c220..1eb1014ec9 100644
--- a/src/Abstractions/NexusMods.Abstractions.Installers/ALibraryFileInstaller.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Library.Installers/ALibraryFileInstaller.cs
@@ -1,10 +1,10 @@
 using JetBrains.Annotations;
 using Microsoft.Extensions.Logging;
-using NexusMods.Abstractions.Library;
+using NexusMods.Abstractions.Library.Models;
 using NexusMods.Abstractions.Loadouts;
 using NexusMods.MnemonicDB.Abstractions;
 
-namespace NexusMods.Abstractions.Installers;
+namespace NexusMods.Abstractions.Library.Installers;
 
 /// <summary>
 /// Base implementation of <see cref="ILibraryFileInstaller"/>.
diff --git a/src/Abstractions/NexusMods.Abstractions.Installers/ALibraryItemInstaller.cs b/src/Abstractions/NexusMods.Abstractions.Library.Installers/ALibraryItemInstaller.cs
similarity index 92%
rename from src/Abstractions/NexusMods.Abstractions.Installers/ALibraryItemInstaller.cs
rename to src/Abstractions/NexusMods.Abstractions.Library.Installers/ALibraryItemInstaller.cs
index 58420b4ca2..3bd3e49755 100644
--- a/src/Abstractions/NexusMods.Abstractions.Installers/ALibraryItemInstaller.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Library.Installers/ALibraryItemInstaller.cs
@@ -1,10 +1,10 @@
 using JetBrains.Annotations;
 using Microsoft.Extensions.Logging;
-using NexusMods.Abstractions.Library;
+using NexusMods.Abstractions.Library.Models;
 using NexusMods.Abstractions.Loadouts;
 using NexusMods.MnemonicDB.Abstractions;
 
-namespace NexusMods.Abstractions.Installers;
+namespace NexusMods.Abstractions.Library.Installers;
 
 /// <summary>
 /// Base implementation of <see cref="ILibraryItemInstaller"/>.
diff --git a/src/Abstractions/NexusMods.Abstractions.Installers/ILibraryArchiveInstaller.cs b/src/Abstractions/NexusMods.Abstractions.Library.Installers/ILibraryArchiveInstaller.cs
similarity index 89%
rename from src/Abstractions/NexusMods.Abstractions.Installers/ILibraryArchiveInstaller.cs
rename to src/Abstractions/NexusMods.Abstractions.Library.Installers/ILibraryArchiveInstaller.cs
index d5fe51ba66..0d2f4a6fdd 100644
--- a/src/Abstractions/NexusMods.Abstractions.Installers/ILibraryArchiveInstaller.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Library.Installers/ILibraryArchiveInstaller.cs
@@ -1,9 +1,9 @@
 using JetBrains.Annotations;
-using NexusMods.Abstractions.Library;
+using NexusMods.Abstractions.Library.Models;
 using NexusMods.Abstractions.Loadouts;
 using NexusMods.MnemonicDB.Abstractions;
 
-namespace NexusMods.Abstractions.Installers;
+namespace NexusMods.Abstractions.Library.Installers;
 
 /// <summary>
 /// Variant of <see cref="ILibraryFileInstaller"/> for <see cref="LibraryArchive"/>
diff --git a/src/Abstractions/NexusMods.Abstractions.Installers/ILibraryFileInstaller.cs b/src/Abstractions/NexusMods.Abstractions.Library.Installers/ILibraryFileInstaller.cs
similarity index 89%
rename from src/Abstractions/NexusMods.Abstractions.Installers/ILibraryFileInstaller.cs
rename to src/Abstractions/NexusMods.Abstractions.Library.Installers/ILibraryFileInstaller.cs
index 1128ba3369..14d85f606b 100644
--- a/src/Abstractions/NexusMods.Abstractions.Installers/ILibraryFileInstaller.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Library.Installers/ILibraryFileInstaller.cs
@@ -1,9 +1,9 @@
 using JetBrains.Annotations;
-using NexusMods.Abstractions.Library;
+using NexusMods.Abstractions.Library.Models;
 using NexusMods.Abstractions.Loadouts;
 using NexusMods.MnemonicDB.Abstractions;
 
-namespace NexusMods.Abstractions.Installers;
+namespace NexusMods.Abstractions.Library.Installers;
 
 /// <summary>
 /// Variant of <see cref="ILibraryItemInstaller"/> for <see cref="LibraryFile"/>.
diff --git a/src/Abstractions/NexusMods.Abstractions.Installers/ILibraryItemInstaller.cs b/src/Abstractions/NexusMods.Abstractions.Library.Installers/ILibraryItemInstaller.cs
similarity index 88%
rename from src/Abstractions/NexusMods.Abstractions.Installers/ILibraryItemInstaller.cs
rename to src/Abstractions/NexusMods.Abstractions.Library.Installers/ILibraryItemInstaller.cs
index 29d5d73887..d7f2020116 100644
--- a/src/Abstractions/NexusMods.Abstractions.Installers/ILibraryItemInstaller.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Library.Installers/ILibraryItemInstaller.cs
@@ -1,9 +1,9 @@
 using JetBrains.Annotations;
-using NexusMods.Abstractions.Library;
+using NexusMods.Abstractions.Library.Models;
 using NexusMods.Abstractions.Loadouts;
 using NexusMods.MnemonicDB.Abstractions;
 
-namespace NexusMods.Abstractions.Installers;
+namespace NexusMods.Abstractions.Library.Installers;
 
 /// <summary>
 /// Turns <see cref="LibraryItem"/> into <see cref="LoadoutItem"/>.
diff --git a/src/Abstractions/NexusMods.Abstractions.Library.Installers/NexusMods.Abstractions.Library.Installers.csproj b/src/Abstractions/NexusMods.Abstractions.Library.Installers/NexusMods.Abstractions.Library.Installers.csproj
new file mode 100644
index 0000000000..c87c227886
--- /dev/null
+++ b/src/Abstractions/NexusMods.Abstractions.Library.Installers/NexusMods.Abstractions.Library.Installers.csproj
@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <!-- NuGet Package Shared Details -->
+    <Import Project="$([MSBuild]::GetPathOfFileAbove('NuGet.Build.props', '$(MSBuildThisFileDirectory)../'))" />
+
+    <ItemGroup>
+        <ProjectReference Include="..\NexusMods.Abstractions.Library.Models\NexusMods.Abstractions.Library.Models.csproj" />
+        <ProjectReference Include="..\NexusMods.Abstractions.Loadouts\NexusMods.Abstractions.Loadouts.csproj" />
+    </ItemGroup>
+
+    <ItemGroup>
+        <Compile Update="ALibraryArchiveInstaller.cs">
+            <DependentUpon>ILibraryArchiveInstaller.cs</DependentUpon>
+        </Compile>
+        <Compile Update="ALibraryFileInstaller.cs">
+            <DependentUpon>ILibraryFileInstaller.cs</DependentUpon>
+        </Compile>
+        <Compile Update="ALibraryItemInstaller.cs">
+            <DependentUpon>ILibraryItemInstaller.cs</DependentUpon>
+        </Compile>
+    </ItemGroup>
+
+</Project>
diff --git a/src/Abstractions/NexusMods.Abstractions.Library/LibraryArchive.cs b/src/Abstractions/NexusMods.Abstractions.Library.Models/LibraryArchive.cs
similarity index 93%
rename from src/Abstractions/NexusMods.Abstractions.Library/LibraryArchive.cs
rename to src/Abstractions/NexusMods.Abstractions.Library.Models/LibraryArchive.cs
index 0a4957a5b5..18fa778547 100644
--- a/src/Abstractions/NexusMods.Abstractions.Library/LibraryArchive.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Library.Models/LibraryArchive.cs
@@ -2,7 +2,7 @@
 using NexusMods.MnemonicDB.Abstractions.Attributes;
 using NexusMods.MnemonicDB.Abstractions.Models;
 
-namespace NexusMods.Abstractions.Library;
+namespace NexusMods.Abstractions.Library.Models;
 
 /// <summary>
 /// Represents an archive in the library.
diff --git a/src/Abstractions/NexusMods.Abstractions.Library/LibraryArchiveFileEntry.cs b/src/Abstractions/NexusMods.Abstractions.Library.Models/LibraryArchiveFileEntry.cs
similarity index 86%
rename from src/Abstractions/NexusMods.Abstractions.Library/LibraryArchiveFileEntry.cs
rename to src/Abstractions/NexusMods.Abstractions.Library.Models/LibraryArchiveFileEntry.cs
index 18ca85ec87..e094149485 100644
--- a/src/Abstractions/NexusMods.Abstractions.Library/LibraryArchiveFileEntry.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Library.Models/LibraryArchiveFileEntry.cs
@@ -1,9 +1,8 @@
 using JetBrains.Annotations;
-using NexusMods.Abstractions.MnemonicDB.Attributes;
 using NexusMods.MnemonicDB.Abstractions.Attributes;
 using NexusMods.MnemonicDB.Abstractions.Models;
 
-namespace NexusMods.Abstractions.Library;
+namespace NexusMods.Abstractions.Library.Models;
 
 /// <summary>
 /// Represents a file inside a library archive.
diff --git a/src/Abstractions/NexusMods.Abstractions.Library/LibraryFile.cs b/src/Abstractions/NexusMods.Abstractions.Library.Models/LibraryFile.cs
similarity index 94%
rename from src/Abstractions/NexusMods.Abstractions.Library/LibraryFile.cs
rename to src/Abstractions/NexusMods.Abstractions.Library.Models/LibraryFile.cs
index e5821acc8c..ef268c7bd8 100644
--- a/src/Abstractions/NexusMods.Abstractions.Library/LibraryFile.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Library.Models/LibraryFile.cs
@@ -2,7 +2,7 @@
 using NexusMods.Abstractions.MnemonicDB.Attributes;
 using NexusMods.MnemonicDB.Abstractions.Models;
 
-namespace NexusMods.Abstractions.Library;
+namespace NexusMods.Abstractions.Library.Models;
 
 /// <summary>
 /// Represents a <see cref="LibraryItem"/> that is a file in the library.
diff --git a/src/Abstractions/NexusMods.Abstractions.Library/LibraryItem.cs b/src/Abstractions/NexusMods.Abstractions.Library.Models/LibraryItem.cs
similarity index 90%
rename from src/Abstractions/NexusMods.Abstractions.Library/LibraryItem.cs
rename to src/Abstractions/NexusMods.Abstractions.Library.Models/LibraryItem.cs
index 1ebd1c30b0..2fd3674994 100644
--- a/src/Abstractions/NexusMods.Abstractions.Library/LibraryItem.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Library.Models/LibraryItem.cs
@@ -2,7 +2,7 @@
 using NexusMods.MnemonicDB.Abstractions.Attributes;
 using NexusMods.MnemonicDB.Abstractions.Models;
 
-namespace NexusMods.Abstractions.Library;
+namespace NexusMods.Abstractions.Library.Models;
 
 /// <summary>
 /// Represents an item in the library.
diff --git a/src/Abstractions/NexusMods.Abstractions.Library/LocalFile.cs b/src/Abstractions/NexusMods.Abstractions.Library.Models/LocalFile.cs
similarity index 92%
rename from src/Abstractions/NexusMods.Abstractions.Library/LocalFile.cs
rename to src/Abstractions/NexusMods.Abstractions.Library.Models/LocalFile.cs
index 0b94a808cd..21617cf340 100644
--- a/src/Abstractions/NexusMods.Abstractions.Library/LocalFile.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Library.Models/LocalFile.cs
@@ -2,7 +2,7 @@
 using NexusMods.MnemonicDB.Abstractions.Attributes;
 using NexusMods.MnemonicDB.Abstractions.Models;
 
-namespace NexusMods.Abstractions.Library;
+namespace NexusMods.Abstractions.Library.Models;
 
 /// <summary>
 /// Represents a local file in the library.
diff --git a/src/Abstractions/NexusMods.Abstractions.Library.Models/NexusMods.Abstractions.Library.Models.csproj b/src/Abstractions/NexusMods.Abstractions.Library.Models/NexusMods.Abstractions.Library.Models.csproj
new file mode 100644
index 0000000000..b27970d59b
--- /dev/null
+++ b/src/Abstractions/NexusMods.Abstractions.Library.Models/NexusMods.Abstractions.Library.Models.csproj
@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+    <!-- NuGet Package Shared Details -->
+    <Import Project="$([MSBuild]::GetPathOfFileAbove('NuGet.Build.props', '$(MSBuildThisFileDirectory)../'))" />
+
+    <ItemGroup>
+        <ProjectReference Include="..\NexusMods.Abstractions.MnemonicDB.Attributes\NexusMods.Abstractions.MnemonicDB.Attributes.csproj" />
+        <PackageReference Include="NexusMods.MnemonicDB.Abstractions" />
+        <PackageReference Include="NexusMods.MnemonicDB.Storage" />
+        <PackageReference Include="TransparentValueObjects" PrivateAssets="all" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
+        <PackageReference Include="NexusMods.MnemonicDB.SourceGenerator" PrivateAssets="all" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <Compile Update="LocalFile.cs">
+        <DependentUpon>LibraryItem.cs</DependentUpon>
+      </Compile>
+      <Compile Update="LibraryFile.cs">
+        <DependentUpon>LibraryItem.cs</DependentUpon>
+      </Compile>
+      <Compile Update="LibraryArchiveFileEntry.cs">
+        <DependentUpon>LibraryArchive.cs</DependentUpon>
+      </Compile>
+    </ItemGroup>
+</Project>
diff --git a/src/Abstractions/NexusMods.Abstractions.Library/Services.cs b/src/Abstractions/NexusMods.Abstractions.Library.Models/Services.cs
similarity index 85%
rename from src/Abstractions/NexusMods.Abstractions.Library/Services.cs
rename to src/Abstractions/NexusMods.Abstractions.Library.Models/Services.cs
index 33a0624467..c0e2a7e836 100644
--- a/src/Abstractions/NexusMods.Abstractions.Library/Services.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Library.Models/Services.cs
@@ -1,8 +1,7 @@
 using JetBrains.Annotations;
 using Microsoft.Extensions.DependencyInjection;
-using NexusMods.Abstractions.MnemonicDB.Attributes;
 
-namespace NexusMods.Abstractions.Library;
+namespace NexusMods.Abstractions.Library.Models;
 
 /// <summary>
 /// Extension methods.
diff --git a/src/Abstractions/NexusMods.Abstractions.Library/ILibraryService.cs b/src/Abstractions/NexusMods.Abstractions.Library/ILibraryService.cs
index 67702580f5..1dee0edf14 100644
--- a/src/Abstractions/NexusMods.Abstractions.Library/ILibraryService.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Library/ILibraryService.cs
@@ -1,6 +1,9 @@
 using JetBrains.Annotations;
+using NexusMods.Abstractions.Downloads;
 using NexusMods.Abstractions.Jobs;
+using NexusMods.Abstractions.Loadouts;
 using NexusMods.Paths;
+using LibraryItem = NexusMods.Abstractions.Library.Models.LibraryItem;
 
 namespace NexusMods.Abstractions.Library;
 
@@ -10,8 +13,20 @@ namespace NexusMods.Abstractions.Library;
 [PublicAPI]
 public interface ILibraryService
 {
+    /// <summary>
+    /// Adds a download to the library.
+    /// </summary>
+    IJob AddDownload(IDownloadJob downloadJob);
+
     /// <summary>
     /// Adds a local file to the library.
     /// </summary>
     IJob AddLocalFile(AbsolutePath absolutePath);
+
+    /// <summary>
+    /// Installs a library item into a target loadout.
+    /// </summary>
+    /// <param name="libraryItem">The item to install.</param>
+    /// <param name="targetLoadout">The target loadout.</param>
+    IJob InstallItem(LibraryItem.ReadOnly libraryItem, Loadout.ReadOnly targetLoadout);
 }
diff --git a/src/Abstractions/NexusMods.Abstractions.Library/NexusMods.Abstractions.Library.csproj b/src/Abstractions/NexusMods.Abstractions.Library/NexusMods.Abstractions.Library.csproj
index c838fae56b..5301250070 100644
--- a/src/Abstractions/NexusMods.Abstractions.Library/NexusMods.Abstractions.Library.csproj
+++ b/src/Abstractions/NexusMods.Abstractions.Library/NexusMods.Abstractions.Library.csproj
@@ -4,22 +4,8 @@
 
     <ItemGroup>
         <ProjectReference Include="..\NexusMods.Abstractions.Downloads\NexusMods.Abstractions.Downloads.csproj" />
-        <ProjectReference Include="..\NexusMods.Abstractions.MnemonicDB.Attributes\NexusMods.Abstractions.MnemonicDB.Attributes.csproj" />
-        <PackageReference Include="NexusMods.MnemonicDB.Abstractions" />
-        <PackageReference Include="NexusMods.MnemonicDB.Storage" />
-        <PackageReference Include="TransparentValueObjects" PrivateAssets="all" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
-        <PackageReference Include="NexusMods.MnemonicDB.SourceGenerator" PrivateAssets="all" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
+        <ProjectReference Include="..\NexusMods.Abstractions.Library.Models\NexusMods.Abstractions.Library.Models.csproj" />
+        <ProjectReference Include="..\NexusMods.Abstractions.Loadouts\NexusMods.Abstractions.Loadouts.csproj" />
     </ItemGroup>
 
-    <ItemGroup>
-      <Compile Update="LocalFile.cs">
-        <DependentUpon>LibraryItem.cs</DependentUpon>
-      </Compile>
-      <Compile Update="LibraryFile.cs">
-        <DependentUpon>LibraryItem.cs</DependentUpon>
-      </Compile>
-      <Compile Update="LibraryArchiveFileEntry.cs">
-        <DependentUpon>LibraryArchive.cs</DependentUpon>
-      </Compile>
-    </ItemGroup>
 </Project>
diff --git a/src/Abstractions/NexusMods.Abstractions.Loadouts/LibraryLinkedLoadoutItem.cs b/src/Abstractions/NexusMods.Abstractions.Loadouts/LibraryLinkedLoadoutItem.cs
index fcef28fb93..a964f3a865 100644
--- a/src/Abstractions/NexusMods.Abstractions.Loadouts/LibraryLinkedLoadoutItem.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Loadouts/LibraryLinkedLoadoutItem.cs
@@ -1,5 +1,5 @@
 using JetBrains.Annotations;
-using NexusMods.Abstractions.Library;
+using NexusMods.Abstractions.Library.Models;
 using NexusMods.MnemonicDB.Abstractions.Attributes;
 using NexusMods.MnemonicDB.Abstractions.Models;
 
diff --git a/src/Abstractions/NexusMods.Abstractions.Loadouts/LoadoutItem.cs b/src/Abstractions/NexusMods.Abstractions.Loadouts/LoadoutItem.cs
index c0a48596b9..edae3d3433 100644
--- a/src/Abstractions/NexusMods.Abstractions.Loadouts/LoadoutItem.cs
+++ b/src/Abstractions/NexusMods.Abstractions.Loadouts/LoadoutItem.cs
@@ -1,5 +1,5 @@
 using JetBrains.Annotations;
-using NexusMods.Abstractions.Library;
+using NexusMods.Abstractions.Library.Models;
 using NexusMods.Abstractions.MnemonicDB.Attributes;
 using NexusMods.MnemonicDB.Abstractions.Attributes;
 using NexusMods.MnemonicDB.Abstractions.Models;
@@ -37,9 +37,4 @@ public partial class LoadoutItem : IModelDefinition
     /// Optional parent of the item.
     /// </summary>
     public static readonly ReferenceAttribute<LoadoutItemGroup> Parent = new(Namespace, nameof(Parent)) { IsIndexed = true, IsOptional = true };
-
-    /// <summary>
-    /// Optional source of the item.
-    /// </summary>
-    public static readonly ReferenceAttribute<LibraryItem> Source = new(Namespace, nameof(Source)) { IsIndexed = true, IsOptional = true };
 }
diff --git a/src/Abstractions/NexusMods.Abstractions.Loadouts/NexusMods.Abstractions.Loadouts.csproj b/src/Abstractions/NexusMods.Abstractions.Loadouts/NexusMods.Abstractions.Loadouts.csproj
index 6fa6ed2177..c519166dcc 100644
--- a/src/Abstractions/NexusMods.Abstractions.Loadouts/NexusMods.Abstractions.Loadouts.csproj
+++ b/src/Abstractions/NexusMods.Abstractions.Loadouts/NexusMods.Abstractions.Loadouts.csproj
@@ -7,7 +7,7 @@
       <ProjectReference Include="..\NexusMods.Abstractions.Activities\NexusMods.Abstractions.Activities.csproj" />
       <ProjectReference Include="..\NexusMods.Abstractions.FileStore\NexusMods.Abstractions.FileStore.csproj" />
       <ProjectReference Include="..\NexusMods.Abstractions.GameLocators\NexusMods.Abstractions.GameLocators.csproj" />
-      <ProjectReference Include="..\NexusMods.Abstractions.Library\NexusMods.Abstractions.Library.csproj" />
+      <ProjectReference Include="..\NexusMods.Abstractions.Library.Models\NexusMods.Abstractions.Library.Models.csproj" />
       <ProjectReference Include="..\NexusMods.Abstractions.Serialization\NexusMods.Abstractions.Serialization.csproj" />
       <PackageReference Include="FlatSharp.Compiler">
         <PrivateAssets>all</PrivateAssets>
diff --git a/src/Abstractions/NexusMods.Abstractions.NexusModsLibrary/NexusMods.Abstractions.NexusModsLibrary.csproj b/src/Abstractions/NexusMods.Abstractions.NexusModsLibrary/NexusMods.Abstractions.NexusModsLibrary.csproj
index 7fca010760..e7df41743e 100644
--- a/src/Abstractions/NexusMods.Abstractions.NexusModsLibrary/NexusMods.Abstractions.NexusModsLibrary.csproj
+++ b/src/Abstractions/NexusMods.Abstractions.NexusModsLibrary/NexusMods.Abstractions.NexusModsLibrary.csproj
@@ -3,7 +3,7 @@
     <ItemGroup>
         <ProjectReference Include="..\NexusMods.Abstractions.Downloads\NexusMods.Abstractions.Downloads.csproj" />
         <ProjectReference Include="..\NexusMods.Abstractions.HttpDownloads\NexusMods.Abstractions.HttpDownloads.csproj" />
-        <ProjectReference Include="..\NexusMods.Abstractions.Library\NexusMods.Abstractions.Library.csproj" />
+        <ProjectReference Include="..\NexusMods.Abstractions.Library.Models\NexusMods.Abstractions.Library.Models.csproj" />
         <PackageReference Include="TransparentValueObjects" PrivateAssets="all" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
         <PackageReference Include="NexusMods.MnemonicDB.SourceGenerator" PrivateAssets="all" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
         <ProjectReference Include="..\NexusMods.Abstractions.NexusWebApi\NexusMods.Abstractions.NexusWebApi.csproj" />
diff --git a/src/Abstractions/NexusMods.Abstractions.NexusModsLibrary/NexusModsLibraryFile.cs b/src/Abstractions/NexusMods.Abstractions.NexusModsLibrary/NexusModsLibraryFile.cs
index 27e321daa1..cd50405b3d 100644
--- a/src/Abstractions/NexusMods.Abstractions.NexusModsLibrary/NexusModsLibraryFile.cs
+++ b/src/Abstractions/NexusMods.Abstractions.NexusModsLibrary/NexusModsLibraryFile.cs
@@ -1,5 +1,5 @@
 using JetBrains.Annotations;
-using NexusMods.Abstractions.Library;
+using NexusMods.Abstractions.Library.Models;
 using NexusMods.MnemonicDB.Abstractions.Attributes;
 using NexusMods.MnemonicDB.Abstractions.Models;
 
diff --git a/src/NexusMods.App/NexusMods.App.csproj b/src/NexusMods.App/NexusMods.App.csproj
index 7ea30baad5..f2fd49fab9 100644
--- a/src/NexusMods.App/NexusMods.App.csproj
+++ b/src/NexusMods.App/NexusMods.App.csproj
@@ -24,6 +24,8 @@
         <ProjectReference Include="..\NexusMods.App.UI\NexusMods.App.UI.csproj" />
         <ProjectReference Include="..\NexusMods.App.Cli\NexusMods.App.Cli.csproj" />
         <ProjectReference Include="..\NexusMods.DataModel\NexusMods.DataModel.csproj" />
+        <ProjectReference Include="..\NexusMods.Jobs\NexusMods.Jobs.csproj" />
+        <ProjectReference Include="..\NexusMods.Library\NexusMods.Library.csproj" />
         <ProjectReference Include="..\NexusMods.ProxyConsole\NexusMods.ProxyConsole.csproj" />
         <ProjectReference Include="..\NexusMods.Settings\NexusMods.Settings.csproj" />
         <ProjectReference Include="..\NexusMods.SingleProcess\NexusMods.SingleProcess.csproj" />
diff --git a/src/NexusMods.App/Services.cs b/src/NexusMods.App/Services.cs
index 3260c7260e..a32599e5db 100644
--- a/src/NexusMods.App/Services.cs
+++ b/src/NexusMods.App/Services.cs
@@ -3,6 +3,7 @@
 using NexusMods.Abstractions.FileStore;
 using NexusMods.Abstractions.Games;
 using NexusMods.Abstractions.Installers;
+using NexusMods.Abstractions.Library.Models;
 using NexusMods.Abstractions.Loadouts;
 using NexusMods.Abstractions.Serialization;
 using NexusMods.Abstractions.Settings;
@@ -21,6 +22,8 @@
 using NexusMods.Games.Generic;
 using NexusMods.Games.Reshade;
 using NexusMods.Games.TestHarness;
+using NexusMods.Jobs;
+using NexusMods.Library;
 using NexusMods.Networking.Downloaders;
 using NexusMods.Networking.HttpDownloader;
 using NexusMods.Networking.NexusWebApi;
@@ -56,6 +59,10 @@ public static IServiceCollection AddApp(this IServiceCollection services,
         {
             services
                 .AddDataModel()
+                .AddLibrary()
+                .AddLibraryModels()
+                .AddJobMonitor()
+
                 .AddSettings<TelemetrySettings>()
                 .AddSettings<LoggingSettings>()
                 .AddSettings<ExperimentalSettings>()
diff --git a/src/NexusMods.DataModel/ArchiveInstaller.cs b/src/NexusMods.DataModel/ArchiveInstaller.cs
index 5f725109c0..9cd7e3b1c4 100644
--- a/src/NexusMods.DataModel/ArchiveInstaller.cs
+++ b/src/NexusMods.DataModel/ArchiveInstaller.cs
@@ -2,17 +2,19 @@
 using Microsoft.Extensions.Logging;
 using NexusMods.Abstractions.Activities;
 using NexusMods.Abstractions.FileStore;
-using NexusMods.Abstractions.FileStore.ArchiveMetadata;
 using NexusMods.Abstractions.FileStore.Downloads;
 using NexusMods.Abstractions.Games;
 using NexusMods.Abstractions.Installers;
 using NexusMods.Abstractions.IO;
+using NexusMods.Abstractions.Library;
 using NexusMods.Abstractions.Loadouts;
-using NexusMods.Abstractions.Loadouts.Ids;
 using NexusMods.Abstractions.Loadouts.Mods;
+using NexusMods.App.BuildInfo;
 using NexusMods.Extensions.BCL;
+using NexusMods.Hashing.xxHash64;
 using NexusMods.MnemonicDB.Abstractions;
 using File = NexusMods.Abstractions.Loadouts.Files.File;
+using LibraryFile = NexusMods.Abstractions.Library.Models.LibraryFile;
 
 namespace NexusMods.DataModel;
 
@@ -22,6 +24,7 @@ namespace NexusMods.DataModel;
 public class ArchiveInstaller : IArchiveInstaller
 {
     private readonly ILogger<ArchiveInstaller> _logger;
+    private readonly ILibraryService _libraryService;
     private readonly IConnection _conn;
     private readonly IActivityFactory _activityFactory;
     private readonly IFileStore _fileStore;
@@ -31,7 +34,9 @@ public class ArchiveInstaller : IArchiveInstaller
     /// <summary>
     /// DI Constructor
     /// </summary>
-    public ArchiveInstaller(ILogger<ArchiveInstaller> logger,
+    public ArchiveInstaller(
+        ILogger<ArchiveInstaller> logger,
+        ILibraryService libraryService,
         IFileOriginRegistry fileOriginRegistry,
         IConnection conn,
         IFileStore fileStore,
@@ -39,13 +44,37 @@ public ArchiveInstaller(ILogger<ArchiveInstaller> logger,
         IServiceProvider provider)
     {
         _logger = logger;
+        _libraryService = libraryService;
         _conn = conn;
         _fileOriginRegistry = fileOriginRegistry;
         _fileStore = fileStore;
         _activityFactory = activityFactory;
         _provider = provider;
     }
-    
+
+    private async Task ShadowTrafficTestLibraryService(Hash hash, Loadout.ReadOnly loadout, CancellationToken cancellationToken)
+    {
+        // TODO: https://github.com/Nexus-Mods/NexusMods.App/issues/1763
+        if (!CompileConstants.IsDebug) return;
+        try
+        {
+            if (!LibraryFile.FindByHash(_conn.Db, hash).TryGetFirst(out var libraryFile))
+            {
+                _logger.LogDebug("Found no library item with hash `{Hash}`, skipping shadow traffic test", hash);
+                return;
+            }
+
+            var job = _libraryService.InstallItem(libraryFile.AsLibraryItem(), loadout);
+            await job.StartAsync(cancellationToken: cancellationToken);
+            var result = await job.WaitToFinishAsync(cancellationToken: cancellationToken);
+            _logger.LogInformation("InstallItem result: `{Result}`", result.ToString());
+        }
+        catch (Exception e)
+        {
+            _logger.LogError(e, "Exception install library item");
+        }
+    }
+
     /// <inheritdoc />
     public async Task<ModId[]> AddMods(
         LoadoutId loadoutId, 
@@ -57,7 +86,9 @@ public async Task<ModId[]> AddMods(
         // Get the loadout and create the mod, so we can use it in the job.
         var useCustomInstaller = installer != null;
         var loadout = Loadout.Load(_conn.Db, loadoutId);
-        
+
+        await ShadowTrafficTestLibraryService(download.Hash, loadout, token);
+
         // Note(suggestedName) cannot be null here.
         // Because string is non-nullable where it is set (FileOriginRegistry),
         // and using that is a prerequisite to calling this function.
diff --git a/src/NexusMods.DataModel/FileOriginRegistry.cs b/src/NexusMods.DataModel/FileOriginRegistry.cs
index da92fb3dfc..10d99442a4 100644
--- a/src/NexusMods.DataModel/FileOriginRegistry.cs
+++ b/src/NexusMods.DataModel/FileOriginRegistry.cs
@@ -1,4 +1,5 @@
-using System.Diagnostics.CodeAnalysis;
+using System.Diagnostics;
+using System.Diagnostics.CodeAnalysis;
 using Microsoft.Extensions.Logging;
 using NexusMods.Abstractions.DiskState;
 using NexusMods.Abstractions.FileExtractor;
@@ -7,6 +8,8 @@
 using NexusMods.Abstractions.FileStore.Downloads;
 using NexusMods.Abstractions.IO;
 using NexusMods.Abstractions.IO.StreamFactories;
+using NexusMods.Abstractions.Library;
+using NexusMods.App.BuildInfo;
 using NexusMods.Extensions.Hashing;
 using NexusMods.Hashing.xxHash64;
 using NexusMods.MnemonicDB.Abstractions;
@@ -23,6 +26,7 @@ namespace NexusMods.DataModel;
 public class FileOriginRegistry : IFileOriginRegistry
 {
     private readonly ILogger<FileOriginRegistry> _logger;
+    private readonly ILibraryService _libraryService;
     private readonly IFileExtractor _extractor;
     private readonly IFileStore _fileStore;
     private readonly TemporaryFileManager _temporaryFileManager;
@@ -30,17 +34,19 @@ public class FileOriginRegistry : IFileOriginRegistry
     private readonly IFileHashCache _fileHashCache;
 
     /// <summary>
-    /// DI Constructor
+    /// Constructor.
     /// </summary>
-    /// <param name="logger"></param>
-    /// <param name="extractor"></param>
-    /// <param name="fileStore"></param>
-    /// <param name="temporaryFileManager"></param>
-    /// <param name="store"></param>
-    public FileOriginRegistry(ILogger<FileOriginRegistry> logger, IFileExtractor extractor,
-        IFileStore fileStore, TemporaryFileManager temporaryFileManager, IConnection conn, IFileHashCache fileHashCache)
+    public FileOriginRegistry(
+        ILogger<FileOriginRegistry> logger,
+        ILibraryService library,
+        IFileExtractor extractor,
+        IFileStore fileStore,
+        TemporaryFileManager temporaryFileManager,
+        IConnection conn,
+        IFileHashCache fileHashCache)
     {
         _logger = logger;
+        _libraryService = library;
         _extractor = extractor;
         _fileStore = fileStore;
         _temporaryFileManager = temporaryFileManager;
@@ -72,9 +78,28 @@ void AppendNestedArchiveMetadata(ITransaction tx, EntityId id)
         }
     }
 
+    private async Task ShadowTrafficTestLibraryService(AbsolutePath path, CancellationToken cancellationToken)
+    {
+        // TODO: https://github.com/Nexus-Mods/NexusMods.App/issues/1763
+        if (!CompileConstants.IsDebug) return;
+        try
+        {
+            var job = _libraryService.AddLocalFile(path);
+            await job.StartAsync(cancellationToken: cancellationToken);
+            var result = await job.WaitToFinishAsync(cancellationToken: cancellationToken);
+            _logger.LogInformation("AddLocalFile result: `{Result}`", result.ToString());
+        }
+        catch (Exception e)
+        {
+            _logger.LogError(e, "Exception adding local file to library");
+        }
+    }
+
     /// <inheritdoc />
     public async ValueTask<DownloadId> RegisterDownload(AbsolutePath path, MetadataFn metaDataFn, string modName, CancellationToken token = default)
     {
+        await ShadowTrafficTestLibraryService(path, token);
+
         var db = _conn.Db;
         var archiveSize = (ulong) path.FileInfo.Size;
         var archiveHash = (await _fileHashCache.IndexFileAsync(path, token)).Hash;
@@ -88,8 +113,11 @@ public async ValueTask<DownloadId> RegisterDownload(AbsolutePath path, MetadataF
         return await RegisterFolderInternal(tmpFolder.Path, metaDataFn, null, _fileStore.GetFileHashes(), archiveHash.Value, archiveSize, modName, token);
     }
 
+    /// <inheritdoc />
     public async ValueTask<DownloadId> RegisterDownload(AbsolutePath path, EntityId id, string modName, CancellationToken token = default)
     {
+        await ShadowTrafficTestLibraryService(path, token);
+
         var db = _conn.Db;
         var archiveSize = (ulong) path.FileInfo.Size;
         
diff --git a/src/NexusMods.DataModel/NexusMods.DataModel.csproj b/src/NexusMods.DataModel/NexusMods.DataModel.csproj
index da8ec57fb4..f6bd200d22 100644
--- a/src/NexusMods.DataModel/NexusMods.DataModel.csproj
+++ b/src/NexusMods.DataModel/NexusMods.DataModel.csproj
@@ -4,6 +4,7 @@
 
     <ItemGroup>
         <ProjectReference Include="..\Abstractions\NexusMods.Abstractions.Cli\NexusMods.Abstractions.Cli.csproj" />
+        <ProjectReference Include="..\Abstractions\NexusMods.Abstractions.Library\NexusMods.Abstractions.Library.csproj" />
         <ProjectReference Include="..\Abstractions\NexusMods.Abstractions.MnemonicDB.Attributes\NexusMods.Abstractions.MnemonicDB.Attributes.csproj" />
         <ProjectReference Include="..\Abstractions\NexusMods.Abstractions.Settings\NexusMods.Abstractions.Settings.csproj" />
         <ProjectReference Include="..\Abstractions\NexusMods.Abstractions.Games.Diagnostics\NexusMods.Abstractions.Games.Diagnostics.csproj" />
diff --git a/src/NexusMods.Jobs/JobMonitor.cs b/src/NexusMods.Jobs/JobMonitor.cs
new file mode 100644
index 0000000000..21a624f12d
--- /dev/null
+++ b/src/NexusMods.Jobs/JobMonitor.cs
@@ -0,0 +1,43 @@
+using System.Collections.ObjectModel;
+using System.Reactive.Disposables;
+using DynamicData;
+using JetBrains.Annotations;
+using NexusMods.Abstractions.Jobs;
+
+namespace NexusMods.Jobs;
+
+[UsedImplicitly]
+public sealed class JobMonitor : IJobMonitor, IDisposable
+{
+    private readonly SourceCache<IJob, JobId> _jobSourceCache = new(job => job.Id);
+    private readonly ReadOnlyObservableCollection<IJob> _jobs;
+    public ReadOnlyObservableCollection<IJob> Jobs => _jobs;
+
+    private readonly CompositeDisposable _compositeDisposable = new();
+
+    public JobMonitor()
+    {
+        var disposable = _jobSourceCache
+            .Connect()
+            .Bind(out _jobs)
+            .Subscribe();
+
+        _compositeDisposable.Add(disposable);
+    }
+
+    public IObservable<IChangeSet<TJob, JobId>> GetObservableChangeSet<TJob>() where TJob : IJob
+    {
+        return _jobSourceCache.Connect().OfType<IJob, JobId, TJob>();
+    }
+
+    public void RegisterJob(IJob job)
+    {
+        _jobSourceCache.AddOrUpdate(job);
+    }
+
+    public void Dispose()
+    {
+        _compositeDisposable.Dispose();
+        _jobSourceCache.Dispose();
+    }
+}
diff --git a/src/NexusMods.Jobs/NexusMods.Jobs.csproj b/src/NexusMods.Jobs/NexusMods.Jobs.csproj
new file mode 100644
index 0000000000..d341e0f871
--- /dev/null
+++ b/src/NexusMods.Jobs/NexusMods.Jobs.csproj
@@ -0,0 +1,5 @@
+<Project Sdk="Microsoft.NET.Sdk">
+    <ItemGroup>
+        <ProjectReference Include="..\Abstractions\NexusMods.Abstractions.Jobs\NexusMods.Abstractions.Jobs.csproj" />
+    </ItemGroup>
+</Project>
diff --git a/src/NexusMods.Jobs/Services.cs b/src/NexusMods.Jobs/Services.cs
new file mode 100644
index 0000000000..e6c1d012bf
--- /dev/null
+++ b/src/NexusMods.Jobs/Services.cs
@@ -0,0 +1,12 @@
+using Microsoft.Extensions.DependencyInjection;
+using NexusMods.Abstractions.Jobs;
+
+namespace NexusMods.Jobs;
+
+public static class Services
+{
+    public static IServiceCollection AddJobMonitor(this IServiceCollection serviceCollection)
+    {
+        return serviceCollection.AddSingleton<IJobMonitor, JobMonitor>();
+    }
+}
diff --git a/src/NexusMods.Library/AddLibraryFileJob.cs b/src/NexusMods.Library/AddLibraryFileJob.cs
index 658245ca14..a1ba63400e 100644
--- a/src/NexusMods.Library/AddLibraryFileJob.cs
+++ b/src/NexusMods.Library/AddLibraryFileJob.cs
@@ -1,6 +1,6 @@
 using DynamicData.Kernel;
 using NexusMods.Abstractions.Jobs;
-using NexusMods.Abstractions.Library;
+using NexusMods.Abstractions.Library.Models;
 using NexusMods.MnemonicDB.Abstractions;
 using NexusMods.Paths;
 
@@ -14,15 +14,17 @@ public AddLibraryFileJob(IJobGroup? group = null, IJobWorker? worker = null)
     public required ITransaction Transaction { get; init; }
     public required AbsolutePath FilePath { get; init; }
     public required bool DoCommit { get; init; }
+    public required bool DoBackup { get; init; }
 
     public Optional<EntityId> EntityId { get; set; }
     public Optional<bool> IsArchive { get; set; }
+    public Optional<bool> HasBackup { get; set; }
     public Optional<JobResult> HashJobResult { get; set; }
     public Optional<LibraryFile.New> LibraryFile { get; set; }
     public Optional<LibraryArchive.New> LibraryArchive { get; set; }
     public Optional<TemporaryPath> ExtractionDirectory { get; set; }
     public Optional<IFileEntry[]> ExtractedFiles { get; set; }
-    public Optional<JobResult[]> AddExtractedFileJobResults { get; set; }
+    public Optional<ValueTuple<JobResult, IFileEntry>[]> AddExtractedFileJobResults { get; set; }
 
     protected override void Dispose(bool disposing)
     {
diff --git a/src/NexusMods.Library/AddLibraryFileJobWorker.cs b/src/NexusMods.Library/AddLibraryFileJobWorker.cs
index a7c98227d3..d82fff64c3 100644
--- a/src/NexusMods.Library/AddLibraryFileJobWorker.cs
+++ b/src/NexusMods.Library/AddLibraryFileJobWorker.cs
@@ -2,9 +2,10 @@
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using NexusMods.Abstractions.FileExtractor;
+using NexusMods.Abstractions.IO;
 using NexusMods.Abstractions.IO.StreamFactories;
 using NexusMods.Abstractions.Jobs;
-using NexusMods.Abstractions.Library;
+using NexusMods.Abstractions.Library.Models;
 using NexusMods.Hashing.xxHash64;
 using NexusMods.MnemonicDB.Abstractions;
 using NexusMods.Paths;
@@ -19,6 +20,7 @@ internal class AddLibraryFileJobWorker : AJobWorker<AddLibraryFileJob>
     private readonly IServiceProvider _serviceProvider;
     private readonly IFileExtractor _fileExtractor;
     private readonly TemporaryFileManager _temporaryFileManager;
+    private readonly IFileStore _fileStore;
 
     public AddLibraryFileJobWorker(IServiceProvider serviceProvider)
     {
@@ -27,6 +29,7 @@ public AddLibraryFileJobWorker(IServiceProvider serviceProvider)
         _serviceProvider = serviceProvider;
         _fileExtractor = serviceProvider.GetRequiredService<IFileExtractor>();
         _temporaryFileManager = serviceProvider.GetRequiredService<TemporaryFileManager>();
+        _fileStore = serviceProvider.GetRequiredService<IFileStore>();
     }
 
     protected override async Task<JobResult> ExecuteAsync(AddLibraryFileJob job, CancellationToken cancellationToken)
@@ -103,28 +106,56 @@ protected override async Task<JobResult> ExecuteAsync(AddLibraryFileJob job, Can
             if (!job.AddExtractedFileJobResults.HasValue)
             {
                 var extractedFiles = job.ExtractedFiles.Value;
-                var results = new JobResult[extractedFiles.Length];
+                var results = new ValueTuple<JobResult, IFileEntry>[extractedFiles.Length];
 
                 await Parallel.ForAsync(fromInclusive: 0, toExclusive: extractedFiles.Length, cancellationToken, async (i, innerCancellationToken) =>
                 {
+                    var fileEntry = extractedFiles[i];
+
                     var worker = _serviceProvider.GetRequiredService<AddLibraryFileJobWorker>();
                     var childJob = new AddLibraryFileJob(job, worker)
                     {
                         Transaction = job.Transaction,
-                        FilePath = extractedFiles[i].Path,
+                        FilePath = fileEntry.Path,
                         DoCommit = false,
+                        DoBackup = false,
                     };
 
                     await worker.StartAsync(childJob, cancellationToken: innerCancellationToken);
                     var result = await childJob.WaitToFinishAsync(cancellationToken: innerCancellationToken);
 
-                    results[i] = result;
+                    results[i] = (result, fileEntry);
                 });
+
+                job.AddExtractedFileJobResults = results;
+            }
+
+            cancellationToken.ThrowIfCancellationRequested();
+            if (!job.HasBackup.HasValue)
+            {
+                var filesToBackup = job.AddExtractedFileJobResults.Value
+                    .Select(tuple =>
+                    {
+                        var (jobResult, fileEntry) = tuple;
+                        var data = jobResult.RequireData<LibraryFile.New>();
+
+                        return new ArchivedFileEntry
+                        {
+                            Hash = data.Hash,
+                            Size = data.Size,
+                            StreamFactory = new NativeFileStreamFactory(fileEntry.Path),
+                        };
+                    })
+                    .ToArray();
+
+                await _fileStore.BackupFiles(filesToBackup, token: cancellationToken);
+                job.HasBackup = true;
             }
 
             cancellationToken.ThrowIfCancellationRequested();
-            foreach (var jobResult in job.AddExtractedFileJobResults.Value)
+            foreach (var tuple in job.AddExtractedFileJobResults.Value)
             {
+                var (jobResult, _) = tuple;
                 var libraryFile = jobResult.RequireData<LibraryFile.New>();
                 var archiveFileEntry = new LibraryArchiveFileEntry.New(job.Transaction, libraryFile.Id)
                 {
@@ -133,6 +164,22 @@ await Parallel.ForAsync(fromInclusive: 0, toExclusive: extractedFiles.Length, ca
                 };
             }
         }
+        else
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+            if (job is { DoBackup: true, HasBackup.HasValue: false })
+            {
+                var archivedFileEntry = new ArchivedFileEntry
+                {
+                    Hash = job.HashJobResult.Value.RequireData<Hash>(),
+                    Size = job.FilePath.FileInfo.Size,
+                    StreamFactory = new NativeFileStreamFactory(job.FilePath),
+                };
+
+                await _fileStore.BackupFiles([archivedFileEntry], token: cancellationToken);
+                job.HasBackup = true;
+            }
+        }
 
         cancellationToken.ThrowIfCancellationRequested();
         if (job.DoCommit)
diff --git a/src/NexusMods.Library/AddLocalFileJobWorker.cs b/src/NexusMods.Library/AddLocalFileJobWorker.cs
index e5304cabd0..39a5b2dd38 100644
--- a/src/NexusMods.Library/AddLocalFileJobWorker.cs
+++ b/src/NexusMods.Library/AddLocalFileJobWorker.cs
@@ -1,7 +1,7 @@
 using JetBrains.Annotations;
 using Microsoft.Extensions.DependencyInjection;
 using NexusMods.Abstractions.Jobs;
-using NexusMods.Abstractions.Library;
+using NexusMods.Abstractions.Library.Models;
 
 namespace NexusMods.Library;
 
@@ -25,6 +25,7 @@ protected override async Task<JobResult> ExecuteAsync(AddLocalFileJob job, Cance
             Transaction = job.Transaction,
             FilePath = job.FilePath,
             DoCommit = false,
+            DoBackup = true,
         };
 
         await worker.StartAsync(addLibraryFileJob, cancellationToken: cancellationToken);
diff --git a/src/NexusMods.Library/InstallLoadoutItemJob.cs b/src/NexusMods.Library/InstallLoadoutItemJob.cs
new file mode 100644
index 0000000000..d1de69bd56
--- /dev/null
+++ b/src/NexusMods.Library/InstallLoadoutItemJob.cs
@@ -0,0 +1,32 @@
+using DynamicData.Kernel;
+using NexusMods.Abstractions.Jobs;
+using NexusMods.Abstractions.Library.Installers;
+using NexusMods.Abstractions.Library.Models;
+using NexusMods.Abstractions.Loadouts;
+using NexusMods.MnemonicDB.Abstractions;
+
+namespace NexusMods.Library;
+
+public class InstallLoadoutItemJob : AJob
+{
+    public InstallLoadoutItemJob(
+        IJobGroup? group = default,
+        IJobWorker? worker = default,
+        IJobMonitor? monitor = default) : base(new MutableProgress(new IndeterminateProgress()), group, worker, monitor) { }
+
+    public required ITransaction Transaction { get; init; }
+    public required LibraryItem.ReadOnly LibraryItem { get; init; }
+    public required Loadout.ReadOnly Loadout { get; init; }
+
+    public Optional<ILibraryItemInstaller> Installer { get; set; }
+
+    protected override void Dispose(bool disposing)
+    {
+        if (disposing)
+        {
+            Transaction.Dispose();
+        }
+
+        base.Dispose(disposing);
+    }
+}
diff --git a/src/NexusMods.Library/InstallLoadoutItemJobWorker.cs b/src/NexusMods.Library/InstallLoadoutItemJobWorker.cs
new file mode 100644
index 0000000000..1d5f48635c
--- /dev/null
+++ b/src/NexusMods.Library/InstallLoadoutItemJobWorker.cs
@@ -0,0 +1,54 @@
+using DynamicData.Kernel;
+using JetBrains.Annotations;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using NexusMods.Abstractions.Games;
+using NexusMods.Abstractions.Installers;
+using NexusMods.Abstractions.Jobs;
+using NexusMods.Abstractions.Library.Installers;
+using NexusMods.Abstractions.Loadouts;
+
+namespace NexusMods.Library;
+
+[UsedImplicitly]
+internal class InstallLoadoutItemJobWorker : AJobWorker<InstallLoadoutItemJob>
+{
+    private readonly ILogger _logger;
+
+    public InstallLoadoutItemJobWorker(IServiceProvider serviceProvider)
+    {
+        _logger = serviceProvider.GetRequiredService<ILogger<InstallLoadoutItemJobWorker>>();
+    }
+
+    protected override async Task<JobResult> ExecuteAsync(InstallLoadoutItemJob job, CancellationToken cancellationToken)
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        if (!job.Installer.HasValue)
+        {
+            ILibraryItemInstaller? foundInstaller = null;
+            var installers = job.Loadout.InstallationInstance.GetGame().LibraryItemInstallers;
+            foreach (var installer in installers)
+            {
+                var isSupported = await installer.IsSupportedAsync(job.LibraryItem, cancellationToken);
+                if (!isSupported) continue;
+
+                foundInstaller = installer;
+                break;
+            }
+
+            // TODO: default to advanced installer
+            if (foundInstaller is null)
+            {
+                return JobResult.CreateFailed($"Found no installer that supports `{job.LibraryItem.Name}` (`{job.LibraryItem.Id}`)");
+            }
+
+            job.Installer = Optional<ILibraryItemInstaller>.Create(foundInstaller);
+        }
+
+        var result = await job.Installer.Value.ExecuteAsync(job.LibraryItem, job.Transaction, job.Loadout, cancellationToken);
+        var transactionResult = await job.Transaction.Commit();
+
+        var jobResults = result.Select(x => transactionResult.Remap(x)).ToArray();
+        return JobResult.CreateCompleted(jobResults);
+    }
+}
diff --git a/src/NexusMods.Library/LibraryService.cs b/src/NexusMods.Library/LibraryService.cs
index 4734ecb011..a136d393d5 100644
--- a/src/NexusMods.Library/LibraryService.cs
+++ b/src/NexusMods.Library/LibraryService.cs
@@ -1,7 +1,10 @@
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
+using NexusMods.Abstractions.Downloads;
 using NexusMods.Abstractions.Jobs;
 using NexusMods.Abstractions.Library;
+using NexusMods.Abstractions.Library.Models;
+using NexusMods.Abstractions.Loadouts;
 using NexusMods.MnemonicDB.Abstractions;
 using NexusMods.Paths;
 
@@ -26,6 +29,11 @@ public LibraryService(ILogger<LibraryService> logger, IConnection connection, IS
         _serviceProvider = serviceProvider;
     }
 
+    public IJob AddDownload(IDownloadJob downloadJob)
+    {
+        throw new NotImplementedException();
+    }
+
     public IJob AddLocalFile(AbsolutePath absolutePath)
     {
         var group = new AddLocalFileJob(worker: _serviceProvider.GetRequiredService<AddLocalFileJobWorker>())
@@ -36,4 +44,16 @@ public IJob AddLocalFile(AbsolutePath absolutePath)
 
         return group;
     }
+
+    public IJob InstallItem(LibraryItem.ReadOnly libraryItem, Loadout.ReadOnly targetLoadout)
+    {
+        var job = new InstallLoadoutItemJob(worker: _serviceProvider.GetRequiredService<InstallLoadoutItemJobWorker>())
+        {
+            Transaction = _connection.BeginTransaction(),
+            LibraryItem = libraryItem,
+            Loadout = targetLoadout,
+        };
+
+        return job;
+    }
 }
diff --git a/src/NexusMods.Library/NexusMods.Library.csproj b/src/NexusMods.Library/NexusMods.Library.csproj
index f141f3c01f..942fb20815 100644
--- a/src/NexusMods.Library/NexusMods.Library.csproj
+++ b/src/NexusMods.Library/NexusMods.Library.csproj
@@ -2,7 +2,10 @@
     <ItemGroup>
         <ProjectReference Include="..\Abstractions\NexusMods.Abstractions.DiskState\NexusMods.Abstractions.DiskState.csproj" />
         <ProjectReference Include="..\Abstractions\NexusMods.Abstractions.FileExtractor\NexusMods.Abstractions.FileExtractor.csproj" />
+        <ProjectReference Include="..\Abstractions\NexusMods.Abstractions.Games\NexusMods.Abstractions.Games.csproj" />
+        <ProjectReference Include="..\Abstractions\NexusMods.Abstractions.Installers\NexusMods.Abstractions.Installers.csproj" />
         <ProjectReference Include="..\Abstractions\NexusMods.Abstractions.Library\NexusMods.Abstractions.Library.csproj" />
+        <ProjectReference Include="..\Abstractions\NexusMods.Abstractions.Loadouts.Synchronizers\NexusMods.Abstractions.Loadouts.Synchronizers.csproj" />
     </ItemGroup>
     <ItemGroup>
       <Compile Update="AddLocalFileJobWorker.cs">
diff --git a/src/NexusMods.Library/Services.cs b/src/NexusMods.Library/Services.cs
index a1c343062b..b1188e3a44 100644
--- a/src/NexusMods.Library/Services.cs
+++ b/src/NexusMods.Library/Services.cs
@@ -15,6 +15,11 @@ public static class Services
     /// </summary>
     public static IServiceCollection AddLibrary(this IServiceCollection serviceCollection)
     {
-        return serviceCollection.AddSingleton<ILibraryService, LibraryService>();
+        return serviceCollection
+            .AddSingleton<ILibraryService, LibraryService>()
+            .AddSingleton<AddLibraryFileJobWorker>()
+            .AddSingleton<AddLocalFileJobWorker>()
+            .AddSingleton<ExtractArchiveJobWorker>()
+            .AddSingleton<InstallLoadoutItemJobWorker>();
     }
 }
diff --git a/src/NexusMods.StandardGameLocators/Unknown/UnknownGame.cs b/src/NexusMods.StandardGameLocators/Unknown/UnknownGame.cs
index b07f941a0e..b77d96f656 100644
--- a/src/NexusMods.StandardGameLocators/Unknown/UnknownGame.cs
+++ b/src/NexusMods.StandardGameLocators/Unknown/UnknownGame.cs
@@ -4,6 +4,7 @@
 using NexusMods.Abstractions.Games.DTO;
 using NexusMods.Abstractions.Installers;
 using NexusMods.Abstractions.IO;
+using NexusMods.Abstractions.Library.Installers;
 using NexusMods.Abstractions.Loadouts.Mods;
 using NexusMods.Abstractions.Loadouts.Synchronizers;
 using NexusMods.Abstractions.Serialization;
@@ -60,6 +61,9 @@ public void ResetInstallations() { }
     /// <inheritdoc />
     public ILoadoutSynchronizer Synchronizer => throw new NotImplementedException();
 
+    /// <inheritdoc />
+    public ILibraryItemInstaller[] LibraryItemInstallers { get; } = [];
+
     /// <inheritdoc />
     public GameInstallation InstallationFromLocatorResult(GameLocatorResult metadata, EntityId dbId, IGameLocator locator)
     {
diff --git a/tests/Games/NexusMods.Games.TestFramework/DependencyInjectionHelper.cs b/tests/Games/NexusMods.Games.TestFramework/DependencyInjectionHelper.cs
index a63a7064c3..a696adfbd5 100644
--- a/tests/Games/NexusMods.Games.TestFramework/DependencyInjectionHelper.cs
+++ b/tests/Games/NexusMods.Games.TestFramework/DependencyInjectionHelper.cs
@@ -2,14 +2,16 @@
 using JetBrains.Annotations;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
-using NexusMods.Abstractions.Activities;
 using NexusMods.Abstractions.HttpDownloader;
+using NexusMods.Abstractions.Library.Models;
 using NexusMods.Abstractions.Loadouts.Synchronizers;
 using NexusMods.Abstractions.Settings;
 using NexusMods.Activities;
 using NexusMods.CrossPlatform;
 using NexusMods.DataModel;
 using NexusMods.FileExtractor;
+using NexusMods.Jobs;
+using NexusMods.Library;
 using NexusMods.Networking.HttpDownloader;
 using NexusMods.Networking.NexusWebApi;
 using NexusMods.Paths;
@@ -59,6 +61,9 @@ public static IServiceCollection AddDefaultServicesForTesting(this IServiceColle
             .AddSettings<LoggingSettings>()
             .AddHttpDownloader()
             .AddDataModel()
+            .AddLibrary()
+            .AddLibraryModels()
+            .AddJobMonitor()
             .AddLoadoutsSynchronizers()
             .OverrideSettingsForTests<DataModelSettings>(settings => settings with
             {
diff --git a/tests/Games/NexusMods.Games.TestFramework/NexusMods.Games.TestFramework.csproj b/tests/Games/NexusMods.Games.TestFramework/NexusMods.Games.TestFramework.csproj
index c3b104b69a..83688aa1a7 100644
--- a/tests/Games/NexusMods.Games.TestFramework/NexusMods.Games.TestFramework.csproj
+++ b/tests/Games/NexusMods.Games.TestFramework/NexusMods.Games.TestFramework.csproj
@@ -5,6 +5,8 @@
         <ProjectReference Include="..\..\..\src\Networking\NexusMods.Networking.NexusWebApi\NexusMods.Networking.NexusWebApi.csproj" />
         <ProjectReference Include="..\..\..\src\NexusMods.Activities\NexusMods.Activities.csproj" />
         <ProjectReference Include="..\..\..\src\NexusMods.DataModel\NexusMods.DataModel.csproj" />
+        <ProjectReference Include="..\..\..\src\NexusMods.Jobs\NexusMods.Jobs.csproj" />
+        <ProjectReference Include="..\..\..\src\NexusMods.Library\NexusMods.Library.csproj" />
         <ProjectReference Include="..\..\..\src\NexusMods.Settings\NexusMods.Settings.csproj" />
         <ProjectReference Include="..\..\NexusMods.StandardGameLocators.TestHelpers\NexusMods.StandardGameLocators.TestHelpers.csproj" />
     </ItemGroup>
diff --git a/tests/NexusMods.CLI.Tests/Startup.cs b/tests/NexusMods.CLI.Tests/Startup.cs
index 297729ccd0..759f224da8 100644
--- a/tests/NexusMods.CLI.Tests/Startup.cs
+++ b/tests/NexusMods.CLI.Tests/Startup.cs
@@ -3,6 +3,7 @@
 using NexusMods.Abstractions.FileStore;
 using NexusMods.Abstractions.Games;
 using NexusMods.Abstractions.Installers;
+using NexusMods.Abstractions.Library.Models;
 using NexusMods.Abstractions.Loadouts;
 using NexusMods.Abstractions.Serialization;
 using NexusMods.Abstractions.Settings;
@@ -11,6 +12,8 @@
 using NexusMods.CrossPlatform;
 using NexusMods.DataModel;
 using NexusMods.FileExtractor;
+using NexusMods.Jobs;
+using NexusMods.Library;
 using NexusMods.Networking.HttpDownloader;
 using NexusMods.Networking.HttpDownloader.Tests;
 using NexusMods.Networking.NexusWebApi;
@@ -33,6 +36,9 @@ public void ConfigureServices(IServiceCollection services)
                 .AddFileSystem()
                 .AddSettingsManager()
                 .AddDataModel()
+                .AddLibrary()
+                .AddLibraryModels()
+                .AddJobMonitor()
                 .OverrideSettingsForTests<DataModelSettings>(settings => settings with
                 {
                     UseInMemoryDataModel = true,
diff --git a/tests/NexusMods.DataModel.Tests/FileOriginRegistryTests.cs b/tests/NexusMods.DataModel.Tests/FileOriginRegistryTests.cs
index f5945fefd9..65cc13e551 100644
--- a/tests/NexusMods.DataModel.Tests/FileOriginRegistryTests.cs
+++ b/tests/NexusMods.DataModel.Tests/FileOriginRegistryTests.cs
@@ -6,6 +6,7 @@
 using NexusMods.Abstractions.FileExtractor;
 using NexusMods.Abstractions.FileStore;
 using NexusMods.Abstractions.IO;
+using NexusMods.Abstractions.Library;
 using NexusMods.DataModel.Tests.Harness;
 using NexusMods.Hashing.xxHash64;
 using NSubstitute;
@@ -21,6 +22,7 @@ public async Task RegisterFolder_ShouldRegisterCorrectly()
         // Arrange
         IFileOriginRegistry sut = new FileOriginRegistry(
             ServiceProvider.GetRequiredService<ILogger<FileOriginRegistry>>(),
+            ServiceProvider.GetRequiredService<ILibraryService>(),
             ServiceProvider.GetRequiredService<IFileExtractor>(),
             FileStore,
             TemporaryFileManager,
@@ -52,6 +54,7 @@ public async Task RegisterFolder_WhenCalledTwice_ShouldBeDedupedOnSameArchive()
         fileStore.GetFileHashes().Returns(new HashSet<ulong>()); // not needed here
         IFileOriginRegistry sut = new FileOriginRegistry(
             ServiceProvider.GetRequiredService<ILogger<FileOriginRegistry>>(),
+            ServiceProvider.GetRequiredService<ILibraryService>(),
             ServiceProvider.GetRequiredService<IFileExtractor>(),
             fileStore,
             TemporaryFileManager,
@@ -78,6 +81,7 @@ public async Task RegisterFolder_WhenCalledTwice_ShouldOnlyAppendNewData()
 
         IFileOriginRegistry sut = new FileOriginRegistry(
             ServiceProvider.GetRequiredService<ILogger<FileOriginRegistry>>(),
+            ServiceProvider.GetRequiredService<ILibraryService>(),
             ServiceProvider.GetRequiredService<IFileExtractor>(),
             fileStore,
             TemporaryFileManager,
diff --git a/tests/NexusMods.DataModel.Tests/NexusMods.DataModel.Tests.csproj b/tests/NexusMods.DataModel.Tests/NexusMods.DataModel.Tests.csproj
index 31c6b97ac7..70be2a13cd 100644
--- a/tests/NexusMods.DataModel.Tests/NexusMods.DataModel.Tests.csproj
+++ b/tests/NexusMods.DataModel.Tests/NexusMods.DataModel.Tests.csproj
@@ -10,6 +10,8 @@
       <ProjectReference Include="..\..\src\NexusMods.DataModel\NexusMods.DataModel.csproj" />
       <ProjectReference Include="..\..\src\NexusMods.App.BuildInfo\NexusMods.App.BuildInfo.csproj" />
       <ProjectReference Include="..\..\src\NexusMods.DataModel\NexusMods.DataModel.csproj" />
+      <ProjectReference Include="..\..\src\NexusMods.Jobs\NexusMods.Jobs.csproj" />
+      <ProjectReference Include="..\..\src\NexusMods.Library\NexusMods.Library.csproj" />
       <ProjectReference Include="..\..\src\NexusMods.Settings\NexusMods.Settings.csproj" />
       <ProjectReference Include="..\..\src\NexusMods.StandardGameLocators\NexusMods.StandardGameLocators.csproj" />
       <ProjectReference Include="..\NexusMods.StandardGameLocators.TestHelpers\NexusMods.StandardGameLocators.TestHelpers.csproj" />
diff --git a/tests/NexusMods.DataModel.Tests/Startup.cs b/tests/NexusMods.DataModel.Tests/Startup.cs
index 83b750799f..60c984cf42 100644
--- a/tests/NexusMods.DataModel.Tests/Startup.cs
+++ b/tests/NexusMods.DataModel.Tests/Startup.cs
@@ -4,6 +4,7 @@
 using NexusMods.Abstractions.Games;
 using NexusMods.Abstractions.GuidedInstallers;
 using NexusMods.Abstractions.Installers;
+using NexusMods.Abstractions.Library.Models;
 using NexusMods.Abstractions.Loadouts;
 using NexusMods.Abstractions.Serialization;
 using NexusMods.Abstractions.Serialization.ExpressionGenerator;
@@ -12,6 +13,8 @@
 using NexusMods.App.BuildInfo;
 using NexusMods.CrossPlatform;
 using NexusMods.FileExtractor;
+using NexusMods.Jobs;
+using NexusMods.Library;
 using NexusMods.Paths;
 using NexusMods.Settings;
 using NexusMods.StandardGameLocators;
@@ -49,6 +52,9 @@ public static IServiceCollection AddServices(IServiceCollection container)
             .AddSingleton(new TemporaryFileManager(FileSystem.Shared, prefix))
             .AddSettingsManager()
             .AddDataModel()
+            .AddLibrary()
+            .AddLibraryModels()
+            .AddJobMonitor()
             .OverrideSettingsForTests<DataModelSettings>(settings => settings with
             {
                 UseInMemoryDataModel = true,
diff --git a/tests/NexusMods.Jobs.Tests/JobWorkerTests.cs b/tests/NexusMods.Jobs.Tests/JobWorkerTests.cs
index f6106d798d..4bd8cf60ff 100644
--- a/tests/NexusMods.Jobs.Tests/JobWorkerTests.cs
+++ b/tests/NexusMods.Jobs.Tests/JobWorkerTests.cs
@@ -10,7 +10,7 @@ public class JobWorkerTests
     public async Task TestCreateSync()
     {
         var job = new MyJob();
-        var worker = JobWorker.Create<MyJob, string>(new MyJob(), (_, _, _) => Task.FromResult<string>("hello world"));
+        var worker = JobWorker.CreateWithData<MyJob, string>(new MyJob(), (_, _, _) => Task.FromResult<string>("hello world"));
 
         await worker.StartAsync(job);
         var jobResult = await job.WaitToFinishAsync();
@@ -23,7 +23,7 @@ public async Task TestCreateSync()
     public async Task TestCreateAsync()
     {
         var job = new MyJob();
-        var worker = JobWorker.Create<MyJob, string>(new MyJob(), async (_, _, _) =>
+        var worker = JobWorker.CreateWithData<MyJob, string>(new MyJob(), async (_, _, _) =>
         {
             await Task.Yield();
             return "hello world";