diff --git a/src/Tgstation.Server.Api/Routes.cs b/src/Tgstation.Server.Api/Routes.cs
index baa11b5859..0890e714d1 100644
--- a/src/Tgstation.Server.Api/Routes.cs
+++ b/src/Tgstation.Server.Api/Routes.cs
@@ -28,6 +28,11 @@ namespace Tgstation.Server.Api
 		/// </summary>
 		public const string InstanceManager = Root + nameof(Models.Instance);
 
+		/// <summary>
+		/// The <see cref="Models.Byond"/> controller
+		/// </summary>
+		public const string Byond = Root + nameof(Models.Byond);
+
 		/// <summary>
 		/// Apply an <paramref name="id"/> postfix to a <paramref name="route"/>
 		/// </summary>
diff --git a/src/Tgstation.Server.Client/ApiClient.cs b/src/Tgstation.Server.Client/ApiClient.cs
index 10b2ff6ecc..dcadaf9698 100644
--- a/src/Tgstation.Server.Client/ApiClient.cs
+++ b/src/Tgstation.Server.Client/ApiClient.cs
@@ -81,5 +81,35 @@ namespace Tgstation.Server.Client
 		{
 			throw new NotImplementedException();
 		}
+
+		public Task<TResult> Create<TBody, TResult>(string route, TBody body, long instanceId, CancellationToken cancellationToken)
+		{
+			throw new NotImplementedException();
+		}
+
+		public Task<TResult> Read<TResult>(string route, long instanceId, CancellationToken cancellationToken)
+		{
+			throw new NotImplementedException();
+		}
+
+		public Task<TResult> Update<TBody, TResult>(string route, TBody body, long instanceId, CancellationToken cancellationToken)
+		{
+			throw new NotImplementedException();
+		}
+
+		public Task<TResult> Update<TResult>(string route, long instanceId, CancellationToken cancellationToken)
+		{
+			throw new NotImplementedException();
+		}
+
+		public Task Update<TBody>(string route, TBody body, long instanceId, CancellationToken cancellationToken)
+		{
+			throw new NotImplementedException();
+		}
+
+		public Task Delete(string route, long instanceId, CancellationToken cancellationToken)
+		{
+			throw new NotImplementedException();
+		}
 	}
 }
\ No newline at end of file
diff --git a/src/Tgstation.Server.Client/Components/ByondClient.cs b/src/Tgstation.Server.Client/Components/ByondClient.cs
new file mode 100644
index 0000000000..e066407afe
--- /dev/null
+++ b/src/Tgstation.Server.Client/Components/ByondClient.cs
@@ -0,0 +1,37 @@
+using System.Threading;
+using System.Threading.Tasks;
+using Tgstation.Server.Api;
+using Tgstation.Server.Api.Models;
+
+namespace Tgstation.Server.Client.Components
+{
+	/// <inheritdoc />
+	sealed class ByondClient : IByondClient
+	{
+		/// <summary>
+		/// The <see cref="IApiClient"/> for the <see cref="ByondClient"/>
+		/// </summary>
+		readonly IApiClient apiClient;
+		/// <summary>
+		/// The <see cref="Instance"/> for the <see cref="ByondClient"/>
+		/// </summary>
+		readonly Instance instance;
+
+		/// <summary>
+		/// Construct a <see cref="ByondClient"/>
+		/// </summary>
+		/// <param name="apiClient">The value of <see cref="apiClient"/></param>
+		/// <param name="instance"></param>
+		public ByondClient(IApiClient apiClient, Instance instance)
+		{
+			this.apiClient = apiClient;
+			this.instance = instance;
+		}
+
+		/// <inheritdoc />
+		public Task<Byond> Read(CancellationToken cancellationToken) => apiClient.Read<Byond>(Routes.Byond, instance.Id, cancellationToken);
+
+		/// <inheritdoc />
+		public Task<Byond> Update(Byond byond, CancellationToken cancellationToken) => apiClient.Update<Byond, Byond>(Routes.Byond, byond, instance.Id, cancellationToken);
+	}
+}
\ No newline at end of file
diff --git a/src/Tgstation.Server.Client/Components/InstanceClient.cs b/src/Tgstation.Server.Client/Components/InstanceClient.cs
index 3d7f5f3457..c585d201f5 100644
--- a/src/Tgstation.Server.Client/Components/InstanceClient.cs
+++ b/src/Tgstation.Server.Client/Components/InstanceClient.cs
@@ -10,7 +10,7 @@ namespace Tgstation.Server.Client.Components
 		public Instance Metadata { get; }
 
 		/// <inheritdoc />
-		public IByondClient Byond => throw new NotImplementedException();
+		public IByondClient Byond { get; }
 
 		/// <inheritdoc />
 		public IRepositoryClient Repository => throw new NotImplementedException();
@@ -47,6 +47,8 @@ namespace Tgstation.Server.Client.Components
 		{
 			this.apiClient = apiClient ?? throw new ArgumentNullException(nameof(apiClient));
 			Metadata = instance ?? throw new ArgumentNullException(nameof(instance));
+
+			Byond = new ByondClient(apiClient, instance);
 		}
 	}
 }
\ No newline at end of file
diff --git a/src/Tgstation.Server.Client/IApiClient.cs b/src/Tgstation.Server.Client/IApiClient.cs
index 46fad817a0..89121e40ce 100644
--- a/src/Tgstation.Server.Client/IApiClient.cs
+++ b/src/Tgstation.Server.Client/IApiClient.cs
@@ -22,5 +22,12 @@ namespace Tgstation.Server.Client
 		Task<TResult> Update<TResult>(string route, CancellationToken cancellationToken);
 		Task Update<TBody>(string route, TBody body, CancellationToken cancellationToken);
 		Task Delete(string route, CancellationToken cancellationToken);
+
+		Task<TResult> Create<TBody, TResult>(string route, TBody body, long instanceId, CancellationToken cancellationToken);
+		Task<TResult> Read<TResult>(string route, long instanceId, CancellationToken cancellationToken);
+		Task<TResult> Update<TBody, TResult>(string route, TBody body, long instanceId, CancellationToken cancellationToken);
+		Task<TResult> Update<TResult>(string route, long instanceId, CancellationToken cancellationToken);
+		Task Update<TBody>(string route, TBody body, long instanceId, CancellationToken cancellationToken);
+		Task Delete(string route, long instanceId, CancellationToken cancellationToken);
 	}
 }
diff --git a/src/Tgstation.Server.Client/InstanceManagerClient.cs b/src/Tgstation.Server.Client/InstanceManagerClient.cs
index 19c94aa075..b89056b302 100644
--- a/src/Tgstation.Server.Client/InstanceManagerClient.cs
+++ b/src/Tgstation.Server.Client/InstanceManagerClient.cs
@@ -27,6 +27,8 @@ namespace Tgstation.Server.Client
 		public InstanceManagerClient(IApiClient apiClient)
 		{
 			this.apiClient = apiClient;
+
+			cachedClients = new Dictionary<long, IInstanceClient>();
 		}
 
 		/// <inheritdoc />
@@ -42,6 +44,14 @@ namespace Tgstation.Server.Client
 		public Task<Instance> Update(Instance instance, CancellationToken cancellationToken) => apiClient.Update<Instance, Instance>(Routes.InstanceManager, instance, cancellationToken);
 
 		/// <inheritdoc />
-		public IInstanceClient CreateClient(Instance instance) => new InstanceClient(apiClient, instance);
+		public IInstanceClient CreateClient(Instance instance)
+		{
+			if (!cachedClients.TryGetValue(instance.Id, out var client))
+			{
+				client = new InstanceClient(apiClient, instance);
+				cachedClients.Add(instance.Id, client);
+			}
+			return client;
+		}
 	}
 }
\ No newline at end of file
diff --git a/src/Tgstation.Server.Host/Controllers/ByondController.cs b/src/Tgstation.Server.Host/Controllers/ByondController.cs
index 0d89f56d12..e685bc7a9a 100644
--- a/src/Tgstation.Server.Host/Controllers/ByondController.cs
+++ b/src/Tgstation.Server.Host/Controllers/ByondController.cs
@@ -5,6 +5,7 @@ using System.Globalization;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
+using Tgstation.Server.Api;
 using Tgstation.Server.Api.Models;
 using Tgstation.Server.Api.Rights;
 using Tgstation.Server.Host.Components;
@@ -17,7 +18,7 @@ namespace Tgstation.Server.Host.Controllers
 	/// <summary>
 	/// Controller for managing <see cref="Api.Models.Byond.Version"/>s
 	/// </summary>
-	[Route("/" + nameof(Byond))]
+	[Route(Routes.Byond)]
 	public sealed class ByondController : ModelController<Api.Models.Byond>
 	{
 		/// <summary>