diff --git a/Program.cs b/Program.cs
index dd291ab..02242ff 100644
--- a/Program.cs
+++ b/Program.cs
@@ -35,10 +35,13 @@ builder.Services.AddSingleton(chatService);
 
 // AnthropicService (Singleton – shared zwischen ChatEndpoint und TelegramService)
 var anthropicToken = builder.Configuration["AnthropicToken"] ?? "";
+var payloadLogging = builder.Configuration.GetValue<bool>("PayloadLogging", false);
+var payloadLoggingGzip = builder.Configuration.GetValue<bool>("PayloadLoggingGzip", false);
 builder.Services.AddSingleton<AnthropicService>(sp =>
     new AnthropicService(
         sp.GetRequiredService<IHttpClientFactory>(),
-        anthropicToken, toolService, dbService, memoryService));
+        anthropicToken, toolService, dbService, memoryService,
+        payloadLogging, payloadLoggingGzip));
 
 // Telegram Bot (pro Session – Token aus Session-Config)
 var maxIterations = builder.Configuration.GetValue<int>("MaxIterations", 100);
diff --git a/Services/AnthropicService.cs b/Services/AnthropicService.cs
index b6723f1..e78e39d 100644
--- a/Services/AnthropicService.cs
+++ b/Services/AnthropicService.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.IO.Compression;
 using System.Net.Http;
 using System.Net.Http.Headers;
 using System.Text;
@@ -19,14 +20,18 @@ public class AnthropicService
     private readonly ToolService _toolService;
     private readonly DatabaseService _db;
     private readonly MemoryService _memoryService;
+    private readonly bool _payloadLogging;
+    private readonly bool _payloadLoggingGzip;
 
-    public AnthropicService(IHttpClientFactory httpFactory, string token, ToolService toolService, DatabaseService db, MemoryService memoryService = null)
+    public AnthropicService(IHttpClientFactory httpFactory, string token, ToolService toolService, DatabaseService db, MemoryService memoryService = null, bool payloadLogging = false, bool payloadLoggingGzip = false)
     {
         _httpFactory = httpFactory;
         _token = token;
         _toolService = toolService;
         _db = db;
         _memoryService = memoryService;
+        _payloadLogging = payloadLogging;
+        _payloadLoggingGzip = payloadLoggingGzip;
     }
 
     public async Task StreamChat(
@@ -416,15 +421,28 @@ public class AnthropicService
         return finalText.Length > 0 ? finalText.ToString() : "(Keine Textantwort)";
     }
 
-    private static void LogPayload(string json, string sessionId, string chainId, int iteration)
+    private void LogPayload(string json, string sessionId, string chainId, int iteration)
     {
+        if (!_payloadLogging) return;
         try
         {
             var logsDir = Path.Combine(AppContext.BaseDirectory, "data", "logs");
             Directory.CreateDirectory(logsDir);
             var timestamp = DateTimeOffset.UtcNow.ToUnixTimeSeconds();
-            var fileName = $"{timestamp}-{sessionId}-{chainId}-iter{iteration}-payload.json";
-            File.WriteAllText(Path.Combine(logsDir, fileName), json);
+            var baseName = $"{timestamp}-{sessionId}-{chainId}-iter{iteration}-payload";
+
+            if (_payloadLoggingGzip)
+            {
+                var filePath = Path.Combine(logsDir, baseName + ".json.gz");
+                using var fs = File.Create(filePath);
+                using var gz = new GZipStream(fs, CompressionLevel.Fastest);
+                using var writer = new StreamWriter(gz, Encoding.UTF8);
+                writer.Write(json);
+            }
+            else
+            {
+                File.WriteAllText(Path.Combine(logsDir, baseName + ".json"), json);
+            }
         }
         catch { /* Logging darf nie die App crashen */ }
     }
diff --git a/appsettings.json b/appsettings.json
index 309ec2f..7c6a5e3 100755
--- a/appsettings.json
+++ b/appsettings.json
@@ -7,5 +7,7 @@
   },
   "AllowedHosts": "*",
   "AnthropicToken": "",
-  "MaxIterations": 100
+  "MaxIterations": 100,
+  "PayloadLogging": false,
+  "PayloadLoggingGzip": false
 }
diff --git a/wwwroot/js/pages/chat-page.js b/wwwroot/js/pages/chat-page.js
index 6c277e8..5f73be7 100644
--- a/wwwroot/js/pages/chat-page.js
+++ b/wwwroot/js/pages/chat-page.js
@@ -384,7 +384,6 @@ registerPage('chat', {
       _streamingPollInterval = null;
     }
     stopHistoryPolling();
-    messages.length = 0;
     lastKnownMessageId = 0;
     loadedArchiveCount = 0;
     isStreaming = false;