diff --git a/CodexPlugin/CodexAccess.cs b/CodexPlugin/CodexAccess.cs
index 40433cf..fa9c00a 100644
--- a/CodexPlugin/CodexAccess.cs
+++ b/CodexPlugin/CodexAccess.cs
@@ -1,6 +1,5 @@
 using Core;
 using KubernetesWorkflow;
-using Utils;
 
 namespace CodexPlugin
 {
@@ -83,7 +82,7 @@ namespace CodexPlugin
             return Container.Name;
         }
 
-        private Http Http()
+        private IHttp Http()
         {
             return tools.CreateHttp(Container.Address, baseUrl: "/api/codex/v1", CheckContainerCrashed, Container.Name);
         }
diff --git a/Core/CoreInterface.cs b/Core/CoreInterface.cs
index 8b6b1b4..fca6e62 100644
--- a/Core/CoreInterface.cs
+++ b/Core/CoreInterface.cs
@@ -25,6 +25,7 @@ namespace Core
         {
             var workflow = entryPoint.Tools.CreateWorkflow();
             var file = entryPoint.Tools.GetLog().CreateSubfile();
+            entryPoint.Tools.GetLog().Log($"Downloading container log for '{container.Name}' to file '{file.FullFilename}'...");
             var logHandler = new LogDownloadHandler(container.Name, file);
             workflow.DownloadContainerLog(container, logHandler, tailLines);
             return logHandler.DownloadLog();
diff --git a/Core/DownloadedLog.cs b/Core/DownloadedLog.cs
index ee31ed7..9242d9b 100644
--- a/Core/DownloadedLog.cs
+++ b/Core/DownloadedLog.cs
@@ -9,11 +9,11 @@ namespace Core
         void DeleteFile();
     }
 
-    public class DownloadedLog : IDownloadedLog
+    internal class DownloadedLog : IDownloadedLog
     {
         private readonly LogFile logFile;
 
-        public DownloadedLog(LogFile logFile)
+        internal DownloadedLog(LogFile logFile)
         {
             this.logFile = logFile;
         }
diff --git a/Core/Http.cs b/Core/Http.cs
index dbb2f99..5bbd132 100644
--- a/Core/Http.cs
+++ b/Core/Http.cs
@@ -7,7 +7,19 @@ using Utils;
 
 namespace Core
 {
-    public class Http
+    public interface IHttp
+    {
+        string HttpGetString(string route);
+        T HttpGetJson<T>(string route);
+        TResponse HttpPostJson<TRequest, TResponse>(string route, TRequest body);
+        string HttpPostJson<TRequest>(string route, TRequest body);
+        string HttpPostString(string route, string body);
+        string HttpPostStream(string route, Stream stream);
+        Stream HttpGetStream(string route);
+        T TryJsonDeserialize<T>(string json);
+    }
+
+    internal class Http : IHttp
     {
         private readonly ILog log;
         private readonly ITimeSet timeSet;
@@ -16,12 +28,12 @@ namespace Core
         private readonly Action<HttpClient> onClientCreated;
         private readonly string? logAlias;
 
-        public Http(ILog log, ITimeSet timeSet, Address address, string baseUrl, string? logAlias = null)
+        internal Http(ILog log, ITimeSet timeSet, Address address, string baseUrl, string? logAlias = null)
             : this(log, timeSet, address, baseUrl, DoNothing, logAlias)
         {
         }
 
-        public Http(ILog log, ITimeSet timeSet, Address address, string baseUrl, Action<HttpClient> onClientCreated, string? logAlias = null)
+        internal Http(ILog log, ITimeSet timeSet, Address address, string baseUrl, Action<HttpClient> onClientCreated, string? logAlias = null)
         {
             this.log = log;
             this.timeSet = timeSet;
diff --git a/Core/LogDownloadHandler.cs b/Core/LogDownloadHandler.cs
index ae6a1da..e1736ed 100644
--- a/Core/LogDownloadHandler.cs
+++ b/Core/LogDownloadHandler.cs
@@ -3,11 +3,11 @@ using Logging;
 
 namespace Core
 {
-    public class LogDownloadHandler : LogHandler, ILogHandler
+    internal class LogDownloadHandler : LogHandler, ILogHandler
     {
         private readonly LogFile log;
 
-        public LogDownloadHandler(string description, LogFile log)
+        internal LogDownloadHandler(string description, LogFile log)
         {
             this.log = log;
 
@@ -15,7 +15,7 @@ namespace Core
             log.WriteRaw(description);
         }
 
-        public IDownloadedLog DownloadLog()
+        internal IDownloadedLog DownloadLog()
         {
             return new DownloadedLog(log);
         }
diff --git a/Core/PluginFinder.cs b/Core/PluginFinder.cs
index 693db86..69df075 100644
--- a/Core/PluginFinder.cs
+++ b/Core/PluginFinder.cs
@@ -2,11 +2,11 @@
 
 namespace Core
 {
-    public static class PluginFinder
+    internal static class PluginFinder
     {
         private static Type[]? pluginTypes = null;
 
-        public static Type[] GetPluginTypes()
+        internal static Type[] GetPluginTypes()
         {
             if (pluginTypes != null) return pluginTypes;
 
diff --git a/Core/PluginManager.cs b/Core/PluginManager.cs
index 2b24788..69ee4bb 100644
--- a/Core/PluginManager.cs
+++ b/Core/PluginManager.cs
@@ -1,6 +1,6 @@
 namespace Core
 {
-    public class PluginManager
+    internal class PluginManager
     {
         private readonly List<IProjectPlugin> projectPlugins = new List<IProjectPlugin>();
 
@@ -16,12 +16,12 @@
             }
         }
 
-        public void AnnouncePlugins()
+        internal void AnnouncePlugins()
         {
             foreach (var plugin in projectPlugins) plugin.Announce();
         }
 
-        public PluginMetadata GatherPluginMetadata()
+        internal PluginMetadata GatherPluginMetadata()
         {
             var metadata = new PluginMetadata();
             foreach (var plugin in projectPlugins)
@@ -34,12 +34,12 @@
             return metadata;
         }
 
-        public void DecommissionPlugins()
+        internal void DecommissionPlugins()
         {
             foreach (var plugin in projectPlugins) plugin.Decommission();
         }
 
-        public T GetPlugin<T>() where T : IProjectPlugin
+        internal T GetPlugin<T>() where T : IProjectPlugin
         {
             return (T)projectPlugins.Single(p => p.GetType() == typeof(T));
         }
diff --git a/Core/PluginMetadata.cs b/Core/PluginMetadata.cs
index c84af76..7bbe1e1 100644
--- a/Core/PluginMetadata.cs
+++ b/Core/PluginMetadata.cs
@@ -1,6 +1,6 @@
 namespace Core
 {
-    public interface IPluginMetadata
+    internal interface IPluginMetadata
     {
         Dictionary<string, string> Get();
     }
@@ -10,7 +10,7 @@
         void Add(string key, string value);
     }
 
-    public class PluginMetadata : IPluginMetadata, IAddMetadata
+    internal class PluginMetadata : IPluginMetadata, IAddMetadata
     {
         private readonly Dictionary<string, string> metadata = new Dictionary<string, string>();
 
diff --git a/Core/PluginTools.cs b/Core/PluginTools.cs
index 704588a..dd0360c 100644
--- a/Core/PluginTools.cs
+++ b/Core/PluginTools.cs
@@ -21,8 +21,8 @@ namespace Core
 
     public interface IHttpFactoryTool
     {
-        Http CreateHttp(Address address, string baseUrl, Action<HttpClient> onClientCreated, string? logAlias = null);
-        Http CreateHttp(Address address, string baseUrl, string? logAlias = null);
+        IHttp CreateHttp(Address address, string baseUrl, Action<HttpClient> onClientCreated, string? logAlias = null);
+        IHttp CreateHttp(Address address, string baseUrl, string? logAlias = null);
     }
 
     public interface IFileTool
@@ -37,7 +37,7 @@ namespace Core
         private readonly IFileManager fileManager;
         private ILog log;
 
-        public PluginTools(ILog log, WorkflowCreator workflowCreator, string fileManagerRootFolder, ITimeSet timeSet)
+        internal PluginTools(ILog log, WorkflowCreator workflowCreator, string fileManagerRootFolder, ITimeSet timeSet)
         {
             this.log = log;
             this.workflowCreator = workflowCreator;
@@ -50,12 +50,12 @@ namespace Core
             log = new LogPrefixer(log, prefix);
         }
 
-        public Http CreateHttp(Address address, string baseUrl, Action<HttpClient> onClientCreated, string? logAlias = null)
+        public IHttp CreateHttp(Address address, string baseUrl, Action<HttpClient> onClientCreated, string? logAlias = null)
         {
             return new Http(log, timeSet, address, baseUrl, onClientCreated, logAlias);
         }
 
-        public Http CreateHttp(Address address, string baseUrl, string? logAlias = null)
+        public IHttp CreateHttp(Address address, string baseUrl, string? logAlias = null)
         {
             return new Http(log, timeSet, address, baseUrl, logAlias);
         }
diff --git a/DistTestCore/TestLifecycle.cs b/DistTestCore/TestLifecycle.cs
index 4723dd2..1ceea34 100644
--- a/DistTestCore/TestLifecycle.cs
+++ b/DistTestCore/TestLifecycle.cs
@@ -81,22 +81,13 @@ namespace DistTestCore
 
         public void DownloadAllLogs()
         {
-            var workflow = entryPoint.Tools.CreateWorkflow();
             foreach (var rc in runningContainers)
             {
                 foreach (var c in rc.Containers)
                 {
-                    DownloadContainerLog(workflow, c);
+                    CoreInterface.DownloadLog(c);
                 }
             }
         }
-
-        private void DownloadContainerLog(IStartupWorkflow workflow, RunningContainer c)
-        {
-            var file = Log.CreateSubfile();
-            Log.Log($"Downloading container log for '{c.Name}' to file '{file.FullFilename}'...");
-            var handler = new LogDownloadHandler(c.Name, file);
-            workflow.DownloadContainerLog(c, handler);
-        }
     }
 }
diff --git a/MetricsPlugin/MetricsQuery.cs b/MetricsPlugin/MetricsQuery.cs
index 425907e..7d63477 100644
--- a/MetricsPlugin/MetricsQuery.cs
+++ b/MetricsPlugin/MetricsQuery.cs
@@ -6,7 +6,7 @@ namespace MetricsPlugin
 {
     public class MetricsQuery
     {
-        private readonly Http http;
+        private readonly IHttp http;
 
         public MetricsQuery(IPluginTools tools, RunningContainer runningContainer)
         {