2 files changed, 23 insertions, 2 deletions
diff --git a/src/StardewModdingAPI/Framework/Models/ModDataDefaults.cs b/src/StardewModdingAPI/Framework/Models/ModDataDefaults.cs
new file mode 100644
index 00000000..e0ab94b8
--- /dev/null
+++ b/src/StardewModdingAPI/Framework/Models/ModDataDefaults.cs
@@ -0,0 +1,18 @@
+namespace StardewModdingAPI.Framework.Models
+{
+    /// <summary>Default values for support fields to inject into the manifest.</summary>
+    internal class ModDataDefaults
+    {
+        /*********
+        ** Accessors
+        *********/
+        /// <summary>The mod's unique ID in the Chucklefish mod site (if any), used for update checks.</summary>
+        public string ChucklefishID { get; set; }
+
+        /// <summary>The mod's unique ID in Nexus Mods (if any), used for update checks.</summary>
+        public string NexusID { get; set; }
+
+        /// <summary>The mod's organisation and project name on GitHub (if any), used for update checks.</summary>
+        public string GitHubProject { get; set; }
+    }
+}
diff --git a/src/StardewModdingAPI/Framework/Models/ModDataRecord.cs b/src/StardewModdingAPI/Framework/Models/ModDataRecord.cs
index de219076..9f19d5f0 100644
--- a/src/StardewModdingAPI/Framework/Models/ModDataRecord.cs
+++ b/src/StardewModdingAPI/Framework/Models/ModDataRecord.cs
@@ -17,8 +17,11 @@ namespace StardewModdingAPI.Framework.Models
         /// <summary>The mod name.</summary>
         public string Name { get; set; }
 
-        /// <summary>The URLs the user can check for a newer version.</summary>
-        public string[] UpdateUrls { get; set; }
+        /// <summary>Default values for support fields to inject into the manifest.</summary>
+        public ModDataDefaults Defaults { get; set; }
+
+        /// <summary>The URL where the player can get an unofficial or alternative version of the mod if the official version isn't compatible.</summary>
+        public string AlternativeUrl { get; set; }
 
         /// <summary>The compatibility of given mod versions (if any).</summary>
         [JsonConverter(typeof(SFieldConverter))]