diff --git a/Libraries/SPTarkov.Server.Core/Callbacks/GameCallbacks.cs b/Libraries/SPTarkov.Server.Core/Callbacks/GameCallbacks.cs
index da8d1d9b..e949ab37 100644
--- a/Libraries/SPTarkov.Server.Core/Callbacks/GameCallbacks.cs
+++ b/Libraries/SPTarkov.Server.Core/Callbacks/GameCallbacks.cs
@@ -6,6 +6,7 @@ using SPTarkov.Server.Core.Models.Eft.Common;
 using SPTarkov.Server.Core.Models.Eft.Common.Request;
 using SPTarkov.Server.Core.Models.Eft.Game;
 using SPTarkov.Server.Core.Servers;
+using SPTarkov.Server.Core.Services;
 using SPTarkov.Server.Core.Utils;
 
 namespace SPTarkov.Server.Core.Callbacks;
@@ -16,6 +17,7 @@ public class GameCallbacks(
     Watermark watermark,
     SaveServer saveServer,
     GameController gameController,
+    ProfileActivityService profileActivityService,
     TimeUtil timeUtil
 ) : IOnLoad
 {
@@ -173,4 +175,19 @@ public class GameCallbacks(
     {
         return new ValueTask<string>(httpResponseUtil.NullResponse());
     }
+
+    /// <summary>
+    ///     Handle singleplayer/clientmods
+    /// </summary>
+    /// <returns></returns>
+    public ValueTask<string> ReceiveClientMods(
+        string url,
+        SendClientModsRequest request,
+        MongoId sessionID
+    )
+    {
+        profileActivityService.SetProfileActiveClientMods(sessionID, request.ActiveClientMods);
+
+        return new ValueTask<string>(httpResponseUtil.NullResponse());
+    }
 }
diff --git a/Libraries/SPTarkov.Server.Core/Models/Eft/Game/SendClientModsRequest.cs b/Libraries/SPTarkov.Server.Core/Models/Eft/Game/SendClientModsRequest.cs
new file mode 100644
index 00000000..cc941809
--- /dev/null
+++ b/Libraries/SPTarkov.Server.Core/Models/Eft/Game/SendClientModsRequest.cs
@@ -0,0 +1,11 @@
+using System.Text.Json.Serialization;
+using SPTarkov.Server.Core.Models.Spt.Services;
+using SPTarkov.Server.Core.Models.Utils;
+
+namespace SPTarkov.Server.Core.Models.Eft.Game;
+
+public record SendClientModsRequest : IRequestData
+{
+    [JsonPropertyName("activeClientMods")]
+    public List<ProfileActiveClientMods> ActiveClientMods { get; set; } = [];
+}
diff --git a/Libraries/SPTarkov.Server.Core/Models/Spt/Services/ProfileActivityData.cs b/Libraries/SPTarkov.Server.Core/Models/Spt/Services/ProfileActivityData.cs
index d7d4b139..99dc2834 100644
--- a/Libraries/SPTarkov.Server.Core/Models/Spt/Services/ProfileActivityData.cs
+++ b/Libraries/SPTarkov.Server.Core/Models/Spt/Services/ProfileActivityData.cs
@@ -1,3 +1,4 @@
+using System.Text.Json.Serialization;
 using SPTarkov.Server.Core.Models.Eft.Match;
 using SPTarkov.Server.Core.Models.Spt.Location;
 
@@ -8,6 +9,7 @@ namespace SPTarkov.Server.Core.Models.Spt.Services
         public long ClientStartedTimestamp { get; set; }
         public long LastActive { get; set; }
         public ProfileActivityRaidData? RaidData { get; set; } = null;
+        public IReadOnlyList<ProfileActiveClientMods> ActiveClientMods { get; set; } = [];
     }
 
     public class ProfileActivityRaidData
@@ -16,4 +18,16 @@ namespace SPTarkov.Server.Core.Models.Spt.Services
         public RaidChanges? RaidAdjustments { get; set; } = null;
         public LocationTransit? LocationTransit { get; set; } = null;
     }
+
+    public record ProfileActiveClientMods
+    {
+        [JsonPropertyName("modName")]
+        public required string Name { get; init; }
+
+        [JsonPropertyName("modGUID")]
+        public required string GUID { get; init; }
+
+        [JsonPropertyName("modVersion")]
+        public required Version Version { get; init; }
+    }
 }
diff --git a/Libraries/SPTarkov.Server.Core/Routers/Static/GameStaticRouter.cs b/Libraries/SPTarkov.Server.Core/Routers/Static/GameStaticRouter.cs
index 2819c4bb..3faf2ce7 100644
--- a/Libraries/SPTarkov.Server.Core/Routers/Static/GameStaticRouter.cs
+++ b/Libraries/SPTarkov.Server.Core/Routers/Static/GameStaticRouter.cs
@@ -97,6 +97,16 @@ public class GameStaticRouter : StaticRouter
                         await gameCallbacks.SendSurveyOpinion(url, info as SendSurveyOpinionRequest, sessionID),
                     typeof(SendSurveyOpinionRequest)
                 ),
+                new RouteAction(
+                    "/singleplayer/clientmods",
+                    async (url, info, sessionID, output) =>
+                        await gameCallbacks.ReceiveClientMods(
+                            url,
+                            info as SendClientModsRequest,
+                            sessionID
+                        ),
+                    typeof(SendClientModsRequest)
+                ),
             ]
         ) { }
 }
diff --git a/Libraries/SPTarkov.Server.Core/Services/ProfileActivityService.cs b/Libraries/SPTarkov.Server.Core/Services/ProfileActivityService.cs
index b38d18c4..7ebfa83a 100644
--- a/Libraries/SPTarkov.Server.Core/Services/ProfileActivityService.cs
+++ b/Libraries/SPTarkov.Server.Core/Services/ProfileActivityService.cs
@@ -117,4 +117,32 @@ public class ProfileActivityService(TimeUtil timeUtil)
             currentActiveProfile.LastActive = timeUtil.GetTimeStamp();
         }
     }
+
+    public IReadOnlyList<ProfileActiveClientMods> GetProfileActiveClientMods(MongoId sessionId)
+    {
+        if (!ContainsActiveProfile(sessionId))
+        {
+            return [];
+        }
+
+        if (_activeProfiles.TryGetValue(sessionId, out var currentActiveProfile))
+        {
+            return currentActiveProfile.ActiveClientMods;
+        }
+
+        throw new Exception($"Unable to retrieve active client mods for session: {sessionId}");
+    }
+
+    public void SetProfileActiveClientMods(MongoId sessionId, IReadOnlyList<ProfileActiveClientMods> activeClientMods)
+    {
+        if (!ContainsActiveProfile(sessionId))
+        {
+            AddActiveProfile(sessionId, timeUtil.GetTimeStamp());
+        }
+
+        if (_activeProfiles.TryGetValue(sessionId, out var currentActiveProfile))
+        {
+            currentActiveProfile.ActiveClientMods = activeClientMods;
+        }
+    }
 }