Standardized AdditionalApiParameters type across providers to use IDictionary<string, string> and improved JSON parsing reliability.

app/MindWork AI Studio/Dialogs/ProviderDialog.razor

@@ -135,7 +135,7 @@
                 <MudDivider />
                 <MudCollapse Expanded="@this.showExpertProviderSettings">
                     <MudJustifiedText>@T("Please be aware: This is for experts only. You are responsible for verifying the correctness of the additional parameters you provide to the API call.")</MudJustifiedText>
-                    <MudJustifiedText>@T("By default, AI Studio uses the OpenAI-compatible chat/completions API, provided it is supported by the underlying service.")</MudJustifiedText>
+                    <MudJustifiedText>@T("By default, AI Studio uses the OpenAI-compatible chat/completions API, provided it is supported by the underlying service and model.")</MudJustifiedText>
                     <MudTextField T="string" Label=@T("Additional API parameters") Variant="Variant.Outlined" Lines="3" AutoGrow="true" HelperText=@T("Add the parameters in proper json formatting. E.g. \"temperature\": 0.5. Trailing commas have to be removed.") HelperTextOnFocus="true " @bind-Value="@ExpertProviderApiParameters" OnBlur="@OnInputChangeExpertSettings"></MudTextField>
                 </MudCollapse>
             </MudStack>

app/MindWork AI Studio/Provider/Anthropic/ChatRequest.cs

@@ -20,6 +20,5 @@ public readonly record struct ChatRequest(
 )
 {
     
-[JsonExtensionData]
+public IDictionary<string, string> AdditionalApiParameters { get; init; }
-public Dictionary<string, object> AdditionalApiParameters { get; init; }
 }

app/MindWork AI Studio/Provider/Anthropic/ProviderAnthropic.cs

@@ -58,7 +58,7 @@ public sealed class ProviderAnthropic() : BaseProvider("https://api.anthropic.co
             }).ToList()],
             
             System = chatThread.PrepareSystemPrompt(settingsManager, chatThread),
-            MaxTokens = apiParameters["max_tokens"] as int? ?? 4_096,
+            MaxTokens = int.TryParse(apiParameters["max_tokens"], out int parsed) ? parsed : 4_096,
             
             // Right now, we only support streaming completions:
             Stream = true,

app/MindWork AI Studio/Provider/BaseProvider.cs

@@ -530,49 +530,46 @@ public abstract class BaseProvider : IProvider, ISecretId
     /// optionally merging additional parameters and removing specific keys.
     /// </summary>
     /// <param name="additionalUserProvidedParameters">A JSON string (without surrounding braces) containing the API parameters to be parsed.</param>
-    /// <param name="defaultParameters">Optional additional parameters to merge into the result. These will overwrite existing keys.</param>
     /// <param name="keysToRemove">Optional list of keys to remove from the final dictionary (case-insensitive). stream, model and messages are removed by default.</param>
-    protected Dictionary<string, object?> ParseApiParameters(
+    protected IDictionary<string, string> ParseApiParameters(
         string additionalUserProvidedParameters,
         IEnumerable<string>? keysToRemove = null)
     {
+        try
+        {
+            // we need to remove line breaks from the JSON string otherwise the server might have problems with parsing the call
+            var withoutLineBreak = additionalUserProvidedParameters.Replace("\n", string.Empty);
             
-        var json = $"{{{additionalUserProvidedParameters}}}";
+            var json = $"{{{withoutLineBreak}}}";
-        var jsonDoc = JsonSerializer.Deserialize<JsonElement>(json, JSON_SERIALIZER_OPTIONS);
+            var jsonDoc = JsonSerializer.Deserialize<JsonElement>(json, JSON_SERIALIZER_OPTIONS);
-        var dict = this.ConvertToDictionary(jsonDoc);
+            var dict = this.ConvertToDictionary(jsonDoc);
 
-        // Some keys are always removed because we always set them
+            // Some keys are always removed because we always set them
-        var finalKeysToRemove = keysToRemove?.ToList() ?? new List<string>();
+            var finalKeysToRemove = keysToRemove?.ToList() ?? new List<string>();
-        finalKeysToRemove.Add("stream");
+            finalKeysToRemove.Add("stream");
-        finalKeysToRemove.Add("model");
+            finalKeysToRemove.Add("model");
-        finalKeysToRemove.Add("messages");
+            finalKeysToRemove.Add("messages");
 
-        var removeSet = new HashSet<string>(finalKeysToRemove, StringComparer.OrdinalIgnoreCase);
+            var removeSet = new HashSet<string>(finalKeysToRemove, StringComparer.OrdinalIgnoreCase);
-        var toRemove = dict.Keys.Where(k => removeSet.Contains(k)).ToList();
+            var toRemove = dict.Keys.Where(k => removeSet.Contains(k)).ToList();
-        foreach (var k in toRemove)
+            foreach (var k in toRemove)
-            dict.Remove(k);
+                dict.Remove(k);
 
-        return dict;
+            return dict;
+        }
+        catch (JsonException ex)
+        {
+            throw new ArgumentException("Invalid JSON in additionalUserProvidedParameters", ex);
+        }
     }
 
-    private Dictionary<string, object?> ConvertToDictionary(JsonElement element)
+    private IDictionary<string, string> ConvertToDictionary(JsonElement element)
     {
         return element.EnumerateObject()
             .ToDictionary(
                 p => p.Name,
-                p => this.ConvertJsonElement(p.Value)
+                p => p.Value.GetRawText()
             );
     }
     
-    private object? ConvertJsonElement(JsonElement element) => element.ValueKind switch
-    {
-        JsonValueKind.String => element.GetString(),
-        JsonValueKind.Number => element.TryGetInt32(out var i) ? (object)i : element.GetDouble(),
-        JsonValueKind.True => true,
-        JsonValueKind.False => false,
-        JsonValueKind.Object => this.ConvertToDictionary(element),
-        JsonValueKind.Array => element.EnumerateArray().Select(this.ConvertJsonElement).ToList(),
-        JsonValueKind.Null => null,
-        _ => element.ToString()
-    };
 }

app/MindWork AI Studio/Provider/Fireworks/ChatRequest.cs

@@ -15,6 +15,5 @@ public readonly record struct ChatRequest(
 )
 {
     
-    [JsonExtensionData]
+    public IDictionary<string, string> AdditionalApiParameters { get; init; }
-    public Dictionary<string, object> AdditionalApiParameters { get; init; }
 }

app/MindWork AI Studio/Provider/Google/ChatRequest.cs

@@ -15,7 +15,5 @@ public readonly record struct ChatRequest(
     bool Stream
 )
 {
-    
+    public IDictionary<string, string> AdditionalApiParameters { get; init; }
-    [JsonExtensionData]
-    public Dictionary<string, object> AdditionalApiParameters { get; init; }
 }

app/MindWork AI Studio/Provider/Groq/ChatRequest.cs

@@ -18,6 +18,5 @@ public readonly record struct ChatRequest(
 )
 {
     
-    [JsonExtensionData]
+    public IDictionary<string, string> AdditionalApiParameters { get; init; }
-    public Dictionary<string, object> AdditionalApiParameters { get; init; }
 }

app/MindWork AI Studio/Provider/Mistral/ChatRequest.cs

@@ -19,6 +19,5 @@ public readonly record struct ChatRequest(
 )
 {
     
-    [JsonExtensionData]
+    public IDictionary<string, string> AdditionalApiParameters { get; init; }
-    public Dictionary<string, object> AdditionalApiParameters { get; init; }
 }

app/MindWork AI Studio/Provider/Mistral/ProviderMistral.cs

@@ -69,7 +69,7 @@ public sealed class ProviderMistral() : BaseProvider("https://api.mistral.ai/v1/
             
             // Right now, we only support streaming completions:
             Stream = true,
-            SafePrompt = apiParameters["safe_prompt"] as bool? ?? false,
+            SafePrompt = bool.TryParse(apiParameters["safe_prompt"], out bool safePrompt) && safePrompt,
             AdditionalApiParameters = apiParameters
         }, JSON_SERIALIZER_OPTIONS);
 

app/MindWork AI Studio/Provider/OpenAI/ChatCompletionAPIRequest.cs

@@ -18,6 +18,5 @@ public record ChatCompletionAPIRequest(
     {
     }
     
-    [JsonExtensionData]
+    public IDictionary<string, string>? AdditionalApiParameters { get; init; }
-    public Dictionary<string, object>? AdditionalApiParameters { get; init; }
 }

app/MindWork AI Studio/Provider/OpenAI/ResponsesAPIRequest.cs

@@ -21,6 +21,5 @@ public record ResponsesAPIRequest(
     {
     }
     
-    [JsonExtensionData]
+    public IDictionary<string, string>? AdditionalApiParameters { get; init; }
-    public Dictionary<string, object>? AdditionalApiParameters { get; init; }
 }

app/MindWork AI Studio/Provider/SelfHosted/ChatRequest.cs

@@ -15,6 +15,5 @@ public readonly record struct ChatRequest(
 )
 {
     
-    [JsonExtensionData]
+    public IDictionary<string, string> AdditionalApiParameters { get; init; }
-    public Dictionary<string, object> AdditionalApiParameters { get; init; }
 }