diff --git a/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/Backend.cs b/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/Backend.cs
index ba1208ace..4163b3cb1 100644
--- a/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/Backend.cs
+++ b/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/Backend.cs
@@ -65,6 +65,10 @@ internal static class Backend {
 		ArgumentNullException.ThrowIfNull(inventoryRemoved);
 		ArgumentException.ThrowIfNullOrEmpty(previousInventoryChecksum);
 
+		if (SharedInfo.BuildInfo.IsCustomBuild) {
+			return null;
+		}
+
 		Uri request = new(ArchiNet.URL, "/Api/Listing/AnnounceDiff");
 
 		AnnouncementDiffRequest data = new(ASF.GlobalDatabase?.Identifier ?? Guid.NewGuid(), steamID, inventory, inventoryChecksum, acceptedMatchableTypes, totalInventoryCount, matchEverything, ASF.GlobalConfig?.MaxTradeHoldDuration ?? GlobalConfig.DefaultMaxTradeHoldDuration, tradeToken, inventoryRemoved, previousInventoryChecksum, nickname, avatarHash);
@@ -96,6 +100,10 @@ internal static class Backend {
 			throw new ArgumentOutOfRangeException(nameof(tradeToken));
 		}
 
+		if (SharedInfo.BuildInfo.IsCustomBuild) {
+			return null;
+		}
+
 		Uri request = new(ArchiNet.URL, "/Api/Listing/Announce/v4");
 
 		AnnouncementRequest data = new(ASF.GlobalDatabase?.Identifier ?? Guid.NewGuid(), steamID, inventory, inventoryChecksum, acceptedMatchableTypes, totalInventoryCount, matchEverything, ASF.GlobalConfig?.MaxTradeHoldDuration ?? GlobalConfig.DefaultMaxTradeHoldDuration, tradeToken, nickname, avatarHash);
@@ -127,6 +135,10 @@ internal static class Backend {
 			throw new ArgumentNullException(nameof(acceptedMatchableTypes));
 		}
 
+		if (SharedInfo.BuildInfo.IsCustomBuild) {
+			return null;
+		}
+
 		Uri request = new(ArchiNet.URL, "/Api/Listing/Inventories/v2");
 
 		Dictionary<string, string> headers = new(1, StringComparer.Ordinal) {
@@ -159,6 +171,10 @@ internal static class Backend {
 			throw new ArgumentNullException(nameof(realAppIDs));
 		}
 
+		if (SharedInfo.BuildInfo.IsCustomBuild) {
+			return null;
+		}
+
 		Uri request = new(ArchiNet.URL, "/Api/SetParts/Request");
 
 		SetPartsRequest data = new(ASF.GlobalDatabase?.Identifier ?? Guid.NewGuid(), steamID, matchableTypes, realAppIDs);
@@ -170,6 +186,10 @@ internal static class Backend {
 		ArgumentNullException.ThrowIfNull(bot);
 		ArgumentNullException.ThrowIfNull(webBrowser);
 
+		if (SharedInfo.BuildInfo.IsCustomBuild) {
+			return null;
+		}
+
 		Uri request = new(ArchiNet.URL, "/Api/Listing/HeartBeat");
 
 		HeartBeatRequest data = new(ASF.GlobalDatabase?.Identifier ?? Guid.NewGuid(), bot.SteamID);
diff --git a/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/ItemsMatcherPlugin.cs b/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/ItemsMatcherPlugin.cs
index a19b3700a..afe944202 100644
--- a/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/ItemsMatcherPlugin.cs
+++ b/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/ItemsMatcherPlugin.cs
@@ -66,6 +66,10 @@ internal sealed class ItemsMatcherPlugin : OfficialPlugin, IBot, IBotCommand2, I
 			throw new ArgumentOutOfRangeException(nameof(steamID));
 		}
 
+		if (SharedInfo.BuildInfo.IsCustomBuild) {
+			return null;
+		}
+
 		return await Commands.OnBotCommand(bot, access, args, steamID).ConfigureAwait(false);
 	}
 
@@ -90,6 +94,10 @@ internal sealed class ItemsMatcherPlugin : OfficialPlugin, IBot, IBotCommand2, I
 			await remoteCommunication.DisposeAsync().ConfigureAwait(false);
 		}
 
+		if (SharedInfo.BuildInfo.IsCustomBuild) {
+			return;
+		}
+
 		remoteCommunication = new RemoteCommunication(bot);
 
 		if (!RemoteCommunications.TryAdd(bot, remoteCommunication)) {
@@ -132,6 +140,12 @@ internal sealed class ItemsMatcherPlugin : OfficialPlugin, IBot, IBotCommand2, I
 	}
 
 	public override Task OnLoaded() {
+		if (SharedInfo.BuildInfo.IsCustomBuild) {
+			ASF.ArchiLogger.LogGenericWarning(Strings.PluginDisabledCustomBuild);
+
+			return Task.CompletedTask;
+		}
+
 		Utilities.WarnAboutIncompleteTranslation(Strings.ResourceManager);
 
 		return Task.CompletedTask;
diff --git a/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/Localization/Strings.Designer.cs b/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/Localization/Strings.Designer.cs
index d22ca609d..cd05e10c3 100644
--- a/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/Localization/Strings.Designer.cs
+++ b/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/Localization/Strings.Designer.cs
@@ -74,5 +74,11 @@ namespace ArchiSteamFarm.OfficialPlugins.ItemsMatcher.Localization {
                 return ResourceManager.GetString("ActivelyMatchingSomeConfirmationsFailed", resourceCulture);
             }
         }
+        
+        internal static string PluginDisabledCustomBuild {
+            get {
+                return ResourceManager.GetString("PluginDisabledCustomBuild", resourceCulture);
+            }
+        }
     }
 }
diff --git a/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/Localization/Strings.resx b/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/Localization/Strings.resx
index 50f62b98e..ab8d0a680 100644
--- a/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/Localization/Strings.resx
+++ b/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/Localization/Strings.resx
@@ -82,4 +82,7 @@
 		<value>Some confirmations have failed, approximately {0} out of {1} trades were sent successfully.</value>
 		<comment>{0} will be replaced by amount of the trade offers that succeeded (number), {1} will be replaced by amount of the trade offers that were supposed to be sent in total (number)</comment>
 	</data>
+	<data name="PluginDisabledCustomBuild" xml:space="preserve">
+		<value>ItemsMatcherPlugin is not supported in custom ASF builds, the functionality is disabled.</value>
+	</data>
 </root>
diff --git a/ArchiSteamFarm/Core/ArchiNet.cs b/ArchiSteamFarm/Core/ArchiNet.cs
index e410174c5..0466c1865 100644
--- a/ArchiSteamFarm/Core/ArchiNet.cs
+++ b/ArchiSteamFarm/Core/ArchiNet.cs
@@ -51,6 +51,10 @@ internal static class ArchiNet {
 			throw new InvalidOperationException(nameof(ASF.WebBrowser));
 		}
 
+		if (SharedInfo.BuildInfo.IsCustomBuild) {
+			return null;
+		}
+
 		Uri request = new(URL, $"/Api/Checksum/{version}/{variant}");
 
 		ObjectResponse<GenericResponse<string>>? response = await ASF.WebBrowser.UrlGetToJsonObject<GenericResponse<string>>(request, cancellationToken: cancellationToken).ConfigureAwait(false);
@@ -67,6 +71,10 @@ internal static class ArchiNet {
 			throw new ArgumentOutOfRangeException(nameof(steamID));
 		}
 
+		if (SharedInfo.BuildInfo.IsCustomBuild) {
+			return null;
+		}
+
 		(_, IReadOnlyCollection<ulong>? badBots) = await CachedBadBots.GetValue(ECacheFallback.FailedNow, cancellationToken).ConfigureAwait(false);
 
 		return badBots?.Contains(steamID);
@@ -76,7 +84,7 @@ internal static class ArchiNet {
 		ArgumentNullException.ThrowIfNull(bot);
 		ArgumentNullException.ThrowIfNull(webBrowser);
 
-		if (!bot.IsConnectedAndLoggedOn) {
+		if (!bot.IsConnectedAndLoggedOn || SharedInfo.BuildInfo.IsCustomBuild) {
 			return null;
 		}
 
@@ -180,6 +188,10 @@ internal static class ArchiNet {
 			throw new InvalidOperationException(nameof(ASF.WebBrowser));
 		}
 
+		if (SharedInfo.BuildInfo.IsCustomBuild) {
+			return (false, null);
+		}
+
 		Uri request = new(URL, "/Api/BadBots");
 
 		ObjectResponse<GenericResponse<ImmutableHashSet<ulong>>>? response = await ASF.WebBrowser.UrlGetToJsonObject<GenericResponse<ImmutableHashSet<ulong>>>(request, cancellationToken: cancellationToken).ConfigureAwait(false);