diff --git a/app/MindWork AI Studio/Provider/Anthropic/ChatRequest.cs b/app/MindWork AI Studio/Provider/Anthropic/ChatRequest.cs
index 12efc868..f7103bd7 100644
--- a/app/MindWork AI Studio/Provider/Anthropic/ChatRequest.cs	
+++ b/app/MindWork AI Studio/Provider/Anthropic/ChatRequest.cs	
@@ -19,6 +19,7 @@ public readonly record struct ChatRequest(
     string System
 )
 {
+    // Attention: The "required" modifier is not supported for [JsonExtensionData].
     [JsonExtensionData]
-    public required IDictionary<string, object> AdditionalApiParameters { get; init; }
+    public IDictionary<string, object> AdditionalApiParameters { get; init; } = new Dictionary<string, object>();
 }
\ No newline at end of file
diff --git a/app/MindWork AI Studio/Provider/Fireworks/ChatRequest.cs b/app/MindWork AI Studio/Provider/Fireworks/ChatRequest.cs
index 6f640035..55154ece 100644
--- a/app/MindWork AI Studio/Provider/Fireworks/ChatRequest.cs	
+++ b/app/MindWork AI Studio/Provider/Fireworks/ChatRequest.cs	
@@ -14,6 +14,7 @@ public readonly record struct ChatRequest(
     bool Stream
 )
 {
+    // Attention: The "required" modifier is not supported for [JsonExtensionData].
     [JsonExtensionData]
-    public required IDictionary<string, object> AdditionalApiParameters { get; init; }
+    public IDictionary<string, object> AdditionalApiParameters { get; init; } = new Dictionary<string, object>();
 }
\ No newline at end of file
diff --git a/app/MindWork AI Studio/Provider/Google/ChatRequest.cs b/app/MindWork AI Studio/Provider/Google/ChatRequest.cs
index 3f4c3277..4fcd03cc 100644
--- a/app/MindWork AI Studio/Provider/Google/ChatRequest.cs	
+++ b/app/MindWork AI Studio/Provider/Google/ChatRequest.cs	
@@ -15,6 +15,7 @@ public readonly record struct ChatRequest(
     bool Stream
 )
 {
+    // Attention: The "required" modifier is not supported for [JsonExtensionData].
     [JsonExtensionData]
-    public required IDictionary<string, object> AdditionalApiParameters { get; init; }
+    public IDictionary<string, object> AdditionalApiParameters { get; init; } = new Dictionary<string, object>();
 }
\ No newline at end of file
diff --git a/app/MindWork AI Studio/Provider/Groq/ChatRequest.cs b/app/MindWork AI Studio/Provider/Groq/ChatRequest.cs
index d707c5de..e45683fe 100644
--- a/app/MindWork AI Studio/Provider/Groq/ChatRequest.cs	
+++ b/app/MindWork AI Studio/Provider/Groq/ChatRequest.cs	
@@ -17,6 +17,7 @@ public readonly record struct ChatRequest(
     int Seed
 )
 {
+    // Attention: The "required" modifier is not supported for [JsonExtensionData].
     [JsonExtensionData]
-    public required IDictionary<string, object> AdditionalApiParameters { get; init; }
+    public IDictionary<string, object> AdditionalApiParameters { get; init; } = new Dictionary<string, object>();
 }
\ No newline at end of file
diff --git a/app/MindWork AI Studio/Provider/Mistral/ChatRequest.cs b/app/MindWork AI Studio/Provider/Mistral/ChatRequest.cs
index 3161b08d..b12dd15d 100644
--- a/app/MindWork AI Studio/Provider/Mistral/ChatRequest.cs	
+++ b/app/MindWork AI Studio/Provider/Mistral/ChatRequest.cs	
@@ -18,6 +18,7 @@ public readonly record struct ChatRequest(
     bool SafePrompt = false
 )
 {
+    // Attention: The "required" modifier is not supported for [JsonExtensionData].
     [JsonExtensionData]
-    public required IDictionary<string, object> AdditionalApiParameters { get; init; }
+    public IDictionary<string, object> AdditionalApiParameters { get; init; } = new Dictionary<string, object>();
 }
\ No newline at end of file
diff --git a/app/MindWork AI Studio/Provider/OpenAI/ChatCompletionAPIRequest.cs b/app/MindWork AI Studio/Provider/OpenAI/ChatCompletionAPIRequest.cs
index cee173de..51805910 100644
--- a/app/MindWork AI Studio/Provider/OpenAI/ChatCompletionAPIRequest.cs	
+++ b/app/MindWork AI Studio/Provider/OpenAI/ChatCompletionAPIRequest.cs	
@@ -18,6 +18,7 @@ public record ChatCompletionAPIRequest(
     {
     }
     
+    // Attention: The "required" modifier is not supported for [JsonExtensionData].
     [JsonExtensionData]
-    public required IDictionary<string, object> AdditionalApiParameters { get; init; }
+    public IDictionary<string, object> AdditionalApiParameters { get; init; } = new Dictionary<string, object>();
 }
\ No newline at end of file
diff --git a/app/MindWork AI Studio/Provider/OpenAI/ResponsesAPIRequest.cs b/app/MindWork AI Studio/Provider/OpenAI/ResponsesAPIRequest.cs
index 0918877e..e3c9541b 100644
--- a/app/MindWork AI Studio/Provider/OpenAI/ResponsesAPIRequest.cs	
+++ b/app/MindWork AI Studio/Provider/OpenAI/ResponsesAPIRequest.cs	
@@ -21,6 +21,7 @@ public record ResponsesAPIRequest(
     {
     }
     
+    // Attention: The "required" modifier is not supported for [JsonExtensionData].
     [JsonExtensionData]
-    public required IDictionary<string, object> AdditionalApiParameters { get; init; }
+    public IDictionary<string, object> AdditionalApiParameters { get; init; } = new Dictionary<string, object>();
 }
\ No newline at end of file
diff --git a/app/MindWork AI Studio/Provider/SelfHosted/ChatRequest.cs b/app/MindWork AI Studio/Provider/SelfHosted/ChatRequest.cs
index 97006305..4791692c 100644
--- a/app/MindWork AI Studio/Provider/SelfHosted/ChatRequest.cs	
+++ b/app/MindWork AI Studio/Provider/SelfHosted/ChatRequest.cs	
@@ -14,6 +14,7 @@ public readonly record struct ChatRequest(
     bool Stream
 )
 {
+    // Attention: The "required" modifier is not supported for [JsonExtensionData].
     [JsonExtensionData]
-    public required IDictionary<string, object> AdditionalApiParameters { get; init; }
+    public IDictionary<string, object> AdditionalApiParameters { get; init; } = new Dictionary<string, object>();
 }
\ No newline at end of file