diff --git a/CakeMail.RestClient/CakeMail.RestClient.csproj b/CakeMail.RestClient/CakeMail.RestClient.csproj
index e7f822c..5abb37a 100644
--- a/CakeMail.RestClient/CakeMail.RestClient.csproj
+++ b/CakeMail.RestClient/CakeMail.RestClient.csproj
@@ -53,6 +53,7 @@
     <Compile Include="CakeMailRestClient.cs" />
     <Compile Include="Exceptions\CakeMailPostException.cs" />
     <Compile Include="Exceptions\CakeMailException.cs" />
+    <Compile Include="ICakeMailRestClient.cs" />
     <Compile Include="Models\LinkStats.cs" />
     <Compile Include="Models\TriggerAction.cs" />
     <Compile Include="Models\FieldType.cs" />
diff --git a/CakeMail.RestClient/CakeMailRestClient.cs b/CakeMail.RestClient/CakeMailRestClient.cs
index 4969fee..bc8c395 100644
--- a/CakeMail.RestClient/CakeMailRestClient.cs
+++ b/CakeMail.RestClient/CakeMailRestClient.cs
@@ -15,7 +15,7 @@ namespace CakeMail.RestClient
 	/// <summary>
 	/// Core class for using the CakeMail Api
 	/// </summary>
-	public class CakeMailRestClient
+	public class CakeMailRestClient : ICakeMailRestClient
 	{
 		#region Fields
 
diff --git a/CakeMail.RestClient/ICakeMailRestClient.cs b/CakeMail.RestClient/ICakeMailRestClient.cs
new file mode 100644
index 0000000..8412833
--- /dev/null
+++ b/CakeMail.RestClient/ICakeMailRestClient.cs
@@ -0,0 +1,53 @@
+using CakeMail.RestClient.Models;
+using CakeMail.RestClient.Resources;
+using System;
+using System.Collections.Generic;
+using System.Net;
+
+namespace CakeMail.RestClient
+{
+	/// <summary>
+	/// Provides the base interface for implementation of access to the CakeMail API
+	/// </summary>
+	interface ICakeMailRestClient
+	{
+		/// <summary>
+		/// The API key provided by CakeMail
+		/// </summary>
+		string ApiKey { get; }
+
+		/// <summary>
+		/// The web proxy
+		/// </summary>
+		IWebProxy Proxy { get; }
+
+		/// <summary>
+		/// The user agent
+		/// </summary>
+		string UserAgent { get; }
+
+		/// <summary>
+		/// The timeout
+		/// </summary>
+		int Timeout { get; }
+
+		/// <summary>
+		/// The URL where all API requests are sent
+		/// </summary>
+		Uri BaseUrl { get; }
+
+		Campaigns Campaigns { get; }
+		Clients Clients { get; }
+		Countries Countries { get; }
+		Permissions Permissions { get; }
+		Lists Lists { get; }
+		Timezones Timezones { get; }
+		Mailings Mailings { get; }
+		Relays Relays { get; }
+		Segments Segments { get; }
+		Users Users { get; }
+		SuppressionLists SuppressionLists { get; }
+		Templates Templates { get; }
+		Triggers Triggers { get; }
+	}
+}
\ No newline at end of file