diff --git a/NewHorizons/External/Configs/StarSystemConfig.cs b/NewHorizons/External/Configs/StarSystemConfig.cs
index 08d0d968..d2afdfd2 100644
--- a/NewHorizons/External/Configs/StarSystemConfig.cs
+++ b/NewHorizons/External/Configs/StarSystemConfig.cs
@@ -4,6 +4,7 @@ using System.ComponentModel.DataAnnotations;
 using System.Linq;
 using System.Xml;
 using NewHorizons.External.Modules;
+using NewHorizons.External.Modules.Conditionals;
 using NewHorizons.External.SerializableData;
 using Newtonsoft.Json;
 using static NewHorizons.External.Modules.ShipLogModule;
@@ -155,6 +156,11 @@ namespace NewHorizons.External.Configs
         /// </summary>
         public CuriosityColorInfo[] curiosities;
 
+        /// <summary>
+        /// A list of conditional checks to be performed while in this star system.
+        /// </summary>
+        public ConditionalCheckInfo[] conditionalChecks;
+
         /// <summary>
         /// Extra data that may be used by extension mods
         /// </summary>
diff --git a/NewHorizons/External/Modules/Conditionals/ConditionalCheckInfo.cs b/NewHorizons/External/Modules/Conditionals/ConditionalCheckInfo.cs
new file mode 100644
index 00000000..c80a0728
--- /dev/null
+++ b/NewHorizons/External/Modules/Conditionals/ConditionalCheckInfo.cs
@@ -0,0 +1,86 @@
+using Newtonsoft.Json;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NewHorizons.External.Modules.Conditionals
+{
+    [JsonObject]
+    public class ConditionalCheckInfo
+    {
+        /// <summary>
+        /// The conditions that must be met for the check to pass
+        /// </summary>
+        public ConditionalCheckConditionsInfo check;
+        /// <summary>
+        /// The effects of the check if it passes
+        /// </summary>
+        public ConditionalCheckEffectsInfo then;
+    }
+
+    [JsonObject]
+    public class ConditionalCheckConditionsInfo
+    {
+        /// <summary>
+        /// The check will only pass if all of these dialogue conditions are set
+        /// </summary>
+        public string[] allConditionsSet;
+        /// <summary>
+        /// The check will only pass if any of these dialogue conditions are set
+        /// </summary>
+        public string[] anyConditionsSet;
+        /// <summary>
+        /// The check will only pass if all of these persistent conditions are set
+        /// </summary>
+        public string[] allPersistentConditionsSet;
+        /// <summary>
+        /// The check will only pass if any of these persistent conditions are set
+        /// </summary>
+        public string[] anyPersistentConditionsSet;
+        /// <summary>
+        /// The check will only pass if all of these ship log facts are revealed
+        /// </summary>
+        public string[] allFactsRevealed;
+        /// <summary>
+        /// The check will only pass if any of these ship log facts are revealed
+        /// </summary>
+        public string[] anyFactsRevealed;
+
+        /// <summary>
+        /// If the check should pass only if the conditions are not met
+        /// </summary>
+        public bool invert;
+    }
+
+    [JsonObject]
+    public class ConditionalCheckEffectsInfo
+    {
+        /// <summary>
+        /// The check will set these dialogue conditions if it passes
+        /// </summary>
+        public string[] setConditions;
+        /// <summary>
+        /// The check will unset these dialogue conditions if it passes
+        /// </summary>
+        public string[] unsetConditions;
+        /// <summary>
+        /// The check will set these persistent conditions if it passes
+        /// </summary>
+        public string[] setPersistentConditions;
+        /// <summary>
+        /// The check will unset these persistent conditions if it passes
+        /// </summary>
+        public string[] unsetPersistentConditions;
+        /// <summary>
+        /// The check will reveal these ship log facts if it passes
+        /// </summary>
+        public string[] revealFacts;
+
+        /// <summary>
+        /// If the check should undo its effects if the conditions are not met anymore (unset the set conditions, etc.). Note: ship log facts cannot currently be unrevealed.
+        /// </summary>
+        public bool reversible;
+    }
+}