diff --git a/src/libs/Anthropic/Generated/Anthropic.AnthropicApi.Authorizations..g.cs b/src/libs/Anthropic/Generated/Anthropic.AnthropicApi.Authorizations.ApiKeyInHeader.g.cs
similarity index 63%
rename from src/libs/Anthropic/Generated/Anthropic.AnthropicApi.Authorizations..g.cs
rename to src/libs/Anthropic/Generated/Anthropic.AnthropicApi.Authorizations.ApiKeyInHeader.g.cs
index d8572e5..8192fb9 100644
--- a/src/libs/Anthropic/Generated/Anthropic.AnthropicApi.Authorizations..g.cs
+++ b/src/libs/Anthropic/Generated/Anthropic.AnthropicApi.Authorizations.ApiKeyInHeader.g.cs
@@ -9,12 +9,16 @@ public sealed partial class AnthropicApi
         /// Authorize using ApiKey authentication.
         /// </summary>
         /// <param name="apiKey"></param>
-        public void AuthorizeUsingApiKey(
+        public void AuthorizeUsingApiKeyInHeader(
             string apiKey)
         {
             apiKey = apiKey ?? throw new global::System.ArgumentNullException(nameof(apiKey));
 
-            _httpClient.DefaultRequestHeaders.Add("x-api-key", apiKey);
+            _authorization = new global::Anthropic.EndPointAuthorization
+            {
+                Name = "x-api-key",
+                Value = apiKey,
+            };
         }
     }
 }
\ No newline at end of file
diff --git a/src/libs/Anthropic/Generated/Anthropic.AnthropicApi.Constructors..g.cs b/src/libs/Anthropic/Generated/Anthropic.AnthropicApi.Constructors..g.cs
index bd96e89..11c1346 100644
--- a/src/libs/Anthropic/Generated/Anthropic.AnthropicApi.Constructors..g.cs
+++ b/src/libs/Anthropic/Generated/Anthropic.AnthropicApi.Constructors..g.cs
@@ -5,15 +5,16 @@ namespace Anthropic
 {
     public sealed partial class AnthropicApi
     {
-        /// <inheritdoc cref="AnthropicApi(global::System.Net.Http.HttpClient?, global::System.Uri?)"/>
+        /// <inheritdoc cref="AnthropicApi(global::System.Net.Http.HttpClient?, global::System.Uri?, global::Anthropic.EndPointAuthorization?)"/>
         public AnthropicApi(
             string apiKey,
             global::System.Net.Http.HttpClient? httpClient = null,
-            global::System.Uri? baseUri = null) : this(httpClient, baseUri)
+            global::System.Uri? baseUri = null,
+            global::Anthropic.EndPointAuthorization? authorization = null) : this(httpClient, baseUri, authorization)
         {
             Authorizing(_httpClient, ref apiKey);
 
-            AuthorizeUsingApiKey(apiKey);
+            AuthorizeUsingApiKeyInHeader(apiKey);
 
             Authorized(_httpClient);
         }
diff --git a/src/libs/Anthropic/Generated/Anthropic.AnthropicApi.CreateMessage.g.cs b/src/libs/Anthropic/Generated/Anthropic.AnthropicApi.CreateMessage.g.cs
index cba4e2c..8bb6bf8 100644
--- a/src/libs/Anthropic/Generated/Anthropic.AnthropicApi.CreateMessage.g.cs
+++ b/src/libs/Anthropic/Generated/Anthropic.AnthropicApi.CreateMessage.g.cs
@@ -50,6 +50,13 @@ partial void ProcessCreateMessageResponseContent(
             using var httpRequest = new global::System.Net.Http.HttpRequestMessage(
                 method: global::System.Net.Http.HttpMethod.Post,
                 requestUri: new global::System.Uri(__path, global::System.UriKind.RelativeOrAbsolute));
+
+            if (_authorization != null)
+            {{
+                httpRequest.Headers.Authorization = new global::System.Net.Http.Headers.AuthenticationHeaderValue(
+                    scheme: _authorization.Name,
+                    parameter: _authorization.Value);
+            }}
             var __httpRequestContentBody = global::System.Text.Json.JsonSerializer.Serialize(request, request.GetType(), JsonSerializerContext);
             var __httpRequestContent = new global::System.Net.Http.StringContent(
                 content: __httpRequestContentBody,
diff --git a/src/libs/Anthropic/Generated/Anthropic.AnthropicApi.g.cs b/src/libs/Anthropic/Generated/Anthropic.AnthropicApi.g.cs
index 852baf3..be8297e 100644
--- a/src/libs/Anthropic/Generated/Anthropic.AnthropicApi.g.cs
+++ b/src/libs/Anthropic/Generated/Anthropic.AnthropicApi.g.cs
@@ -16,6 +16,7 @@ public sealed partial class AnthropicApi : global::Anthropic.IAnthropicApi, glob
         public const string BaseUrl = "https://api.anthropic.com/v1";
 
         private readonly global::System.Net.Http.HttpClient _httpClient;
+        private global::Anthropic.EndPointAuthorization? _authorization;
 
         /// <summary>
         /// 
@@ -29,13 +30,16 @@ public sealed partial class AnthropicApi : global::Anthropic.IAnthropicApi, glob
         /// If no baseUri is provided, the default baseUri from OpenAPI spec will be used.
         /// </summary>
         /// <param name="httpClient"></param>
-        /// <param name="baseUri"></param> 
+        /// <param name="baseUri"></param>
+        /// <param name="authorization"></param>
         public AnthropicApi(
             global::System.Net.Http.HttpClient? httpClient = null,
-            global::System.Uri? baseUri = null)
+            global::System.Uri? baseUri = null,
+            global::Anthropic.EndPointAuthorization? authorization = null)
         {
             _httpClient = httpClient ?? new global::System.Net.Http.HttpClient();
             _httpClient.BaseAddress ??= baseUri ?? new global::System.Uri(BaseUrl);
+            _authorization = authorization;
 
             Initialized(_httpClient);
         }
diff --git a/src/libs/Anthropic/Generated/Anthropic.PathBuilder.g.cs b/src/libs/Anthropic/Generated/Anthropic.PathBuilder.g.cs
index 46ca187..a3990a7 100644
--- a/src/libs/Anthropic/Generated/Anthropic.PathBuilder.g.cs
+++ b/src/libs/Anthropic/Generated/Anthropic.PathBuilder.g.cs
@@ -224,4 +224,20 @@ public PathBuilder AddOptionalParameter<T>(
         /// <returns>The constructed URL.</returns>
         public override string ToString() => _stringBuilder.ToString();
     }
+
+    /// <summary>
+    /// 
+    /// </summary>
+    public class EndPointAuthorization
+    {
+        /// <summary>
+        /// 
+        /// </summary>
+        public string Name { get; set; } = string.Empty;
+
+        /// <summary>
+        /// 
+        /// </summary>
+        public string Value { get; set; } = string.Empty;
+    }
 }
\ No newline at end of file