diff --git a/src/Tgstation.Server.Host/Components/Interop/Bridge/BridgeParameters.cs b/src/Tgstation.Server.Host/Components/Interop/Bridge/BridgeParameters.cs
index 9ff2785219..ac6b470d90 100644
--- a/src/Tgstation.Server.Host/Components/Interop/Bridge/BridgeParameters.cs
+++ b/src/Tgstation.Server.Host/Components/Interop/Bridge/BridgeParameters.cs
@@ -1,5 +1,7 @@
 using System;
+using System.Collections.Generic;
 using Tgstation.Server.Api.Models;
+using Tgstation.Server.Host.Components.Chat.Commands;
 
 namespace Tgstation.Server.Host.Components.Interop.Bridge
 {
@@ -23,6 +25,11 @@ namespace Tgstation.Server.Host.Components.Interop.Bridge
 		/// </summary>
 		public Version Version { get; set; }
 
+		/// <summary>
+		/// The DMAPI <see cref="CustomCommand"/>s for <see cref="BridgeCommandType.Startup"/> requests.
+		/// </summary>
+		public ICollection<CustomCommand> CustomCommands { get; set; }
+
 		/// <summary>
 		/// The minimum required <see cref="DreamDaemonSecurity"/> level for <see cref="BridgeCommandType.Startup"/> requests.
 		/// </summary>
diff --git a/src/Tgstation.Server.Host/Components/Interop/Bridge/RuntimeInformation.cs b/src/Tgstation.Server.Host/Components/Interop/Bridge/RuntimeInformation.cs
index 1cd4cbfe77..686c0f3af4 100644
--- a/src/Tgstation.Server.Host/Components/Interop/Bridge/RuntimeInformation.cs
+++ b/src/Tgstation.Server.Host/Components/Interop/Bridge/RuntimeInformation.cs
@@ -11,7 +11,7 @@ namespace Tgstation.Server.Host.Components.Interop.Bridge
 	/// <summary>
 	/// Representation of the initial data passed as part of a <see cref="BridgeCommandType.Startup"/> request.
 	/// </summary>
-	public sealed class RuntimeInformation : ChatChannelsUpdate
+	public sealed class RuntimeInformation : ChatUpdate
 	{
 		/// <summary>
 		/// The code used by the server to authenticate command Topics
@@ -60,7 +60,7 @@ namespace Tgstation.Server.Host.Components.Interop.Bridge
 		/// <param name="cryptographySuite">The <see cref="ICryptographySuite"/> used to generate the value of <see cref="DMApiParameters.AccessIdentifier"/>.</param>
 		/// <param name="serverPortProvider">The <see cref="IServerPortProvider"/> used to set the value of <see cref="ServerPort"/>.</param>
 		/// <param name="testMerges">An <see cref="IEnumerable{T}"/> used to construct the value of <see cref="TestMerges"/>.</param>
-		/// <param name="chatChannels">The <see cref="Chat.ChannelRepresentation"/>s for the <see cref="ChatChannelsUpdate"/>.</param>
+		/// <param name="chatChannels">The <see cref="Chat.ChannelRepresentation"/>s for the <see cref="ChatUpdate"/>.</param>
 		/// <param name="instance">The <see cref="Instance"/> used to set <see cref="InstanceName"/>.</param>
 		/// <param name="revision">The value of <see cref="RevisionInformation"/>.</param>
 		/// <param name="securityLevel">The value of <see cref="SecurityLevel"/>.</param>
diff --git a/src/Tgstation.Server.Host/Components/Interop/ChatUpdate.cs b/src/Tgstation.Server.Host/Components/Interop/ChatUpdate.cs
index 61bbfd1dce..06ca6b6604 100644
--- a/src/Tgstation.Server.Host/Components/Interop/ChatUpdate.cs
+++ b/src/Tgstation.Server.Host/Components/Interop/ChatUpdate.cs
@@ -8,7 +8,7 @@ namespace Tgstation.Server.Host.Components.Interop
 	/// <summary>
 	/// Represents an update of <see cref="ChannelRepresentation"/>s.
 	/// </summary>
-	public class ChatChannelsUpdate
+	public class ChatUpdate
 	{
 		/// <summary>
 		/// The <see cref="IEnumerable{T}"/> of <see cref="ChannelRepresentation"/>s.
@@ -16,10 +16,10 @@ namespace Tgstation.Server.Host.Components.Interop
 		public IEnumerable<ChannelRepresentation> Channels { get; }
 
 		/// <summary>
-		/// Initializes a new instance of the <see cref="ChatChannelsUpdate"/> <see langword="class"/>.
+		/// Initializes a new instance of the <see cref="ChatUpdate"/> <see langword="class"/>.
 		/// </summary>
 		/// <param name="channels">The <see cref="IEnumerable{T}"/> that forms the value of <see cref="Channels"/>.</param>
-		public ChatChannelsUpdate(IEnumerable<ChannelRepresentation> channels)
+		public ChatUpdate(IEnumerable<ChannelRepresentation> channels)
 		{
 			Channels = channels?.ToList() ?? throw new ArgumentNullException(nameof(channels));
 		}
diff --git a/src/Tgstation.Server.Host/Components/Interop/DMApiConstants.cs b/src/Tgstation.Server.Host/Components/Interop/DMApiConstants.cs
index 1cc08a6c18..ec311caabb 100644
--- a/src/Tgstation.Server.Host/Components/Interop/DMApiConstants.cs
+++ b/src/Tgstation.Server.Host/Components/Interop/DMApiConstants.cs
@@ -20,6 +20,11 @@ namespace Tgstation.Server.Host.Components.Interop
 		/// </summary>
 		public const string ParamServerPort = "tgs_port";
 
+		/// <summary>
+		/// Identifies the <see cref="DMApiParameters.AccessIdentifier"/> for the session.
+		/// </summary>
+		public const string ParamAccessIdentifier = "tgs_key";
+
 		/// <summary>
 		/// Parameter json is encoded in for topic requests.
 		/// </summary>
diff --git a/tgstation-server.sln b/tgstation-server.sln
index 1259c4a318..a0114affb6 100644
--- a/tgstation-server.sln
+++ b/tgstation-server.sln
@@ -1,12 +1,13 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-VisualStudioVersion = 15.0.28307.136
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.29728.190
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{DA32568D-1D8D-4A4C-9943-BFD3CE796B3F}"
 	ProjectSection(SolutionItems) = preProject
 		.codecov.yml = .codecov.yml
 		.dockerignore = .dockerignore
+		.editorconfig = .editorconfig
 		.gitignore = .gitignore
 		.travis.yml = .travis.yml
 		appveyor.yml = appveyor.yml
@@ -142,6 +143,14 @@ Global
 		ReleaseNoService|Any CPU = ReleaseNoService|Any CPU
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{2B69AD6D-2B5A-4023-8EAD-0BD1B18E028A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{2B69AD6D-2B5A-4023-8EAD-0BD1B18E028A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{2B69AD6D-2B5A-4023-8EAD-0BD1B18E028A}.DebugNoService|Any CPU.ActiveCfg = Debug|Any CPU
+		{2B69AD6D-2B5A-4023-8EAD-0BD1B18E028A}.DebugNoService|Any CPU.Build.0 = Debug|Any CPU
+		{2B69AD6D-2B5A-4023-8EAD-0BD1B18E028A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{2B69AD6D-2B5A-4023-8EAD-0BD1B18E028A}.Release|Any CPU.Build.0 = Release|Any CPU
+		{2B69AD6D-2B5A-4023-8EAD-0BD1B18E028A}.ReleaseNoService|Any CPU.ActiveCfg = Release|Any CPU
+		{2B69AD6D-2B5A-4023-8EAD-0BD1B18E028A}.ReleaseNoService|Any CPU.Build.0 = Release|Any CPU
 		{A09C947F-4B9B-4AEE-AB50-47055EA05F18}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{A09C947F-4B9B-4AEE-AB50-47055EA05F18}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{A09C947F-4B9B-4AEE-AB50-47055EA05F18}.DebugNoService|Any CPU.ActiveCfg = Debug|Any CPU
@@ -158,14 +167,6 @@ Global
 		{D36B99C4-E771-42D6-A95F-1102B3E236DF}.Release|Any CPU.Build.0 = Release|Any CPU
 		{D36B99C4-E771-42D6-A95F-1102B3E236DF}.ReleaseNoService|Any CPU.ActiveCfg = Release|Any CPU
 		{D36B99C4-E771-42D6-A95F-1102B3E236DF}.ReleaseNoService|Any CPU.Build.0 = Release|Any CPU
-		{2B69AD6D-2B5A-4023-8EAD-0BD1B18E028A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{2B69AD6D-2B5A-4023-8EAD-0BD1B18E028A}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{2B69AD6D-2B5A-4023-8EAD-0BD1B18E028A}.DebugNoService|Any CPU.ActiveCfg = Debug|Any CPU
-		{2B69AD6D-2B5A-4023-8EAD-0BD1B18E028A}.DebugNoService|Any CPU.Build.0 = Debug|Any CPU
-		{2B69AD6D-2B5A-4023-8EAD-0BD1B18E028A}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{2B69AD6D-2B5A-4023-8EAD-0BD1B18E028A}.Release|Any CPU.Build.0 = Release|Any CPU
-		{2B69AD6D-2B5A-4023-8EAD-0BD1B18E028A}.ReleaseNoService|Any CPU.ActiveCfg = Release|Any CPU
-		{2B69AD6D-2B5A-4023-8EAD-0BD1B18E028A}.ReleaseNoService|Any CPU.Build.0 = Release|Any CPU
 		{8B4A208D-A48A-4A5D-8B94-E2661138865D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{8B4A208D-A48A-4A5D-8B94-E2661138865D}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{8B4A208D-A48A-4A5D-8B94-E2661138865D}.DebugNoService|Any CPU.ActiveCfg = Debug|Any CPU