diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ContextsDelete.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ContextsDelete.g.cs
index 9e9a613..5f69215 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ContextsDelete.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ContextsDelete.g.cs
@@ -119,7 +119,7 @@ partial void ProcessContextsDeleteResponse(
                 PrepareContextsDeleteRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id);
+                    id: id!);
 
                 return __httpRequest;
             }
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ContextsGet.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ContextsGet.g.cs
index bbb2742..9d67f56 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ContextsGet.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ContextsGet.g.cs
@@ -124,7 +124,7 @@ partial void ProcessContextsGetResponseContent(
                 PrepareContextsGetRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id);
+                    id: id!);
 
                 return __httpRequest;
             }
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ContextsUpdate.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ContextsUpdate.g.cs
index e9cfbce..a48b3f4 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ContextsUpdate.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ContextsUpdate.g.cs
@@ -124,7 +124,7 @@ partial void ProcessContextsUpdateResponseContent(
                 PrepareContextsUpdateRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id);
+                    id: id!);
 
                 return __httpRequest;
             }
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.DownloadsDelete.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.DownloadsDelete.g.cs
index e725323..118852b 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.DownloadsDelete.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.DownloadsDelete.g.cs
@@ -120,7 +120,7 @@ partial void ProcessDownloadsDeleteResponse(
                 PrepareDownloadsDeleteRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id);
+                    id: id!);
 
                 return __httpRequest;
             }
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.DownloadsGet.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.DownloadsGet.g.cs
index 41997f8..ed960ea 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.DownloadsGet.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.DownloadsGet.g.cs
@@ -125,7 +125,7 @@ partial void ProcessDownloadsGetResponseContent(
                 PrepareDownloadsGetRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id);
+                    id: id!);
 
                 return __httpRequest;
             }
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.DownloadsList.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.DownloadsList.g.cs
index 102d162..6032a25 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.DownloadsList.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.DownloadsList.g.cs
@@ -180,7 +180,7 @@ partial void ProcessDownloadsListResponseContent(
                 PrepareDownloadsListRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    sessionId: sessionId,
+                    sessionId: sessionId!,
                     filename: filename,
                     mimeType: mimeType,
                     minSize: minSize,
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ExtensionsDelete.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ExtensionsDelete.g.cs
index 7dad687..8533ce5 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ExtensionsDelete.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ExtensionsDelete.g.cs
@@ -119,7 +119,7 @@ partial void ProcessExtensionsDeleteResponse(
                 PrepareExtensionsDeleteRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id);
+                    id: id!);
 
                 return __httpRequest;
             }
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ExtensionsGet.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ExtensionsGet.g.cs
index f696934..c71dadc 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ExtensionsGet.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ExtensionsGet.g.cs
@@ -124,7 +124,7 @@ partial void ProcessExtensionsGetResponseContent(
                 PrepareExtensionsGetRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id);
+                    id: id!);
 
                 return __httpRequest;
             }
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ExtensionsUpload.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ExtensionsUpload.g.cs
index ba463af..96a3294 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ExtensionsUpload.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ExtensionsUpload.g.cs
@@ -118,6 +118,34 @@ partial void ProcessExtensionsUploadResponseContent(
             }
                             var __httpRequestContent = new global::System.Net.Http.MultipartFormDataContent();
                             var __contentFile = new global::System.Net.Http.ByteArrayContent(request.File ?? global::System.Array.Empty<byte>());
+                            __contentFile.Headers.ContentType = new global::System.Net.Http.Headers.MediaTypeHeaderValue(
+                                request.Filename is null
+                                    ? "application/octet-stream"
+                                    : (global::System.IO.Path.GetExtension(request.Filename) ?? string.Empty).ToLowerInvariant() switch
+                                    {
+                                        ".aac" => "audio/aac",
+                                        ".flac" => "audio/flac",
+                                        ".gif" => "image/gif",
+                                        ".jpeg" => "image/jpeg",
+                                        ".jpg" => "image/jpeg",
+                                        ".json" => "application/json",
+                                        ".m4a" => "audio/mp4",
+                                        ".mp3" => "audio/mpeg",
+                                        ".mp4" => "video/mp4",
+                                        ".mpeg" => "audio/mpeg",
+                                        ".mpga" => "audio/mpeg",
+                                        ".oga" => "audio/ogg",
+                                        ".ogg" => "audio/ogg",
+                                        ".opus" => "audio/ogg",
+                                        ".pdf" => "application/pdf",
+                                        ".png" => "image/png",
+                                        ".txt" => "text/plain",
+                                        ".wav" => "audio/wav",
+                                        ".weba" => "audio/webm",
+                                        ".webm" => "video/webm",
+                                        ".webp" => "image/webp",
+                                        _ => "application/octet-stream",
+                                    });
                             __httpRequestContent.Add(
                                 content: __contentFile,
                                 name: "\"file\"",
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionBuildsGet.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionBuildsGet.g.cs
index 4486e71..fbab6a7 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionBuildsGet.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionBuildsGet.g.cs
@@ -124,7 +124,7 @@ partial void ProcessFunctionBuildsGetResponseContent(
                 PrepareFunctionBuildsGetRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id);
+                    id: id!);
 
                 return __httpRequest;
             }
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionBuildsGetLogs.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionBuildsGetLogs.g.cs
index ab088a7..9c912bb 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionBuildsGetLogs.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionBuildsGetLogs.g.cs
@@ -124,7 +124,7 @@ partial void ProcessFunctionBuildsGetLogsResponseContent(
                 PrepareFunctionBuildsGetLogsRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id);
+                    id: id!);
 
                 return __httpRequest;
             }
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionVersionsGet.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionVersionsGet.g.cs
index 09605a4..151b8af 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionVersionsGet.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionVersionsGet.g.cs
@@ -124,7 +124,7 @@ partial void ProcessFunctionVersionsGetResponseContent(
                 PrepareFunctionVersionsGetRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id);
+                    id: id!);
 
                 return __httpRequest;
             }
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionVersionsListInvocations.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionVersionsListInvocations.g.cs
index 9bcb032..fb1b89b 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionVersionsListInvocations.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionVersionsListInvocations.g.cs
@@ -151,7 +151,7 @@ partial void ProcessFunctionVersionsListInvocationsResponseContent(
                     offset: offset,
                     limit: limit,
                     status: status,
-                    id: id);
+                    id: id!);
 
                 return __httpRequest;
             }
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionsGet.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionsGet.g.cs
index 1d03223..5859d71 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionsGet.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionsGet.g.cs
@@ -124,7 +124,7 @@ partial void ProcessFunctionsGetResponseContent(
                 PrepareFunctionsGetRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id);
+                    id: id!);
 
                 return __httpRequest;
             }
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionsInvoke.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionsInvoke.g.cs
index 1116c3b..3c94844 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionsInvoke.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionsInvoke.g.cs
@@ -138,7 +138,7 @@ partial void ProcessFunctionsInvokeResponseContent(
                 PrepareFunctionsInvokeRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id,
+                    id: id!,
                     request: request);
 
                 return __httpRequest;
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionsListVersions.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionsListVersions.g.cs
index 0c558dc..f28b72f 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionsListVersions.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.FunctionsListVersions.g.cs
@@ -144,7 +144,7 @@ partial void ProcessFunctionsListVersionsResponseContent(
                     httpRequestMessage: __httpRequest,
                     offset: offset,
                     limit: limit,
-                    id: id);
+                    id: id!);
 
                 return __httpRequest;
             }
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.InvocationsGet.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.InvocationsGet.g.cs
index 8fc6bef..c754d46 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.InvocationsGet.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.InvocationsGet.g.cs
@@ -124,7 +124,7 @@ partial void ProcessInvocationsGetResponseContent(
                 PrepareInvocationsGetRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id);
+                    id: id!);
 
                 return __httpRequest;
             }
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.InvocationsGetLogs.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.InvocationsGetLogs.g.cs
index 7feef6b..0387d4e 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.InvocationsGetLogs.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.InvocationsGetLogs.g.cs
@@ -124,7 +124,7 @@ partial void ProcessInvocationsGetLogsResponseContent(
                 PrepareInvocationsGetLogsRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id);
+                    id: id!);
 
                 return __httpRequest;
             }
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ProjectsGet.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ProjectsGet.g.cs
index 06d8910..7f177bd 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ProjectsGet.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ProjectsGet.g.cs
@@ -124,7 +124,7 @@ partial void ProcessProjectsGetResponseContent(
                 PrepareProjectsGetRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id);
+                    id: id!);
 
                 return __httpRequest;
             }
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ProjectsUsage.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ProjectsUsage.g.cs
index 3a43bde..1d602be 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ProjectsUsage.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.ProjectsUsage.g.cs
@@ -124,7 +124,7 @@ partial void ProcessProjectsUsageResponseContent(
                 PrepareProjectsUsageRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id);
+                    id: id!);
 
                 return __httpRequest;
             }
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsGet.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsGet.g.cs
index 23d8b83..8e19b3b 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsGet.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsGet.g.cs
@@ -124,7 +124,7 @@ partial void ProcessSessionsGetResponseContent(
                 PrepareSessionsGetRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id);
+                    id: id!);
 
                 return __httpRequest;
             }
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsGetDebug.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsGetDebug.g.cs
index 748a2a9..81ad684 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsGetDebug.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsGetDebug.g.cs
@@ -124,7 +124,7 @@ partial void ProcessSessionsGetDebugResponseContent(
                 PrepareSessionsGetDebugRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id);
+                    id: id!);
 
                 return __httpRequest;
             }
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsGetLogs.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsGetLogs.g.cs
index fce22f9..905f362 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsGetLogs.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsGetLogs.g.cs
@@ -124,7 +124,7 @@ partial void ProcessSessionsGetLogsResponseContent(
                 PrepareSessionsGetLogsRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id);
+                    id: id!);
 
                 return __httpRequest;
             }
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsGetRecording.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsGetRecording.g.cs
index 27199f1..0f2141e 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsGetRecording.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsGetRecording.g.cs
@@ -124,7 +124,7 @@ partial void ProcessSessionsGetRecordingResponseContent(
                 PrepareSessionsGetRecordingRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id);
+                    id: id!);
 
                 return __httpRequest;
             }
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsUpdate.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsUpdate.g.cs
index 9d6edbd..5397422 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsUpdate.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsUpdate.g.cs
@@ -138,7 +138,7 @@ partial void ProcessSessionsUpdateResponseContent(
                 PrepareSessionsUpdateRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id,
+                    id: id!,
                     request: request);
 
                 return __httpRequest;
diff --git a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsUploadFile.g.cs b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsUploadFile.g.cs
index d84f085..fd0047c 100644
--- a/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsUploadFile.g.cs
+++ b/src/libs/Browserbase/Generated/Browserbase.BrowserbaseClient.SessionsUploadFile.g.cs
@@ -123,9 +123,37 @@ partial void ProcessSessionsUploadFileResponseContent(
             }
                             var __httpRequestContent = new global::System.Net.Http.MultipartFormDataContent();
                             __httpRequestContent.Add(
-                                content: new global::System.Net.Http.StringContent($"{id}"),
+                                content: new global::System.Net.Http.StringContent(id ?? string.Empty),
                                 name: "\"id\"");
                             var __contentFile = new global::System.Net.Http.ByteArrayContent(request.File ?? global::System.Array.Empty<byte>());
+                            __contentFile.Headers.ContentType = new global::System.Net.Http.Headers.MediaTypeHeaderValue(
+                                request.Filename is null
+                                    ? "application/octet-stream"
+                                    : (global::System.IO.Path.GetExtension(request.Filename) ?? string.Empty).ToLowerInvariant() switch
+                                    {
+                                        ".aac" => "audio/aac",
+                                        ".flac" => "audio/flac",
+                                        ".gif" => "image/gif",
+                                        ".jpeg" => "image/jpeg",
+                                        ".jpg" => "image/jpeg",
+                                        ".json" => "application/json",
+                                        ".m4a" => "audio/mp4",
+                                        ".mp3" => "audio/mpeg",
+                                        ".mp4" => "video/mp4",
+                                        ".mpeg" => "audio/mpeg",
+                                        ".mpga" => "audio/mpeg",
+                                        ".oga" => "audio/ogg",
+                                        ".ogg" => "audio/ogg",
+                                        ".opus" => "audio/ogg",
+                                        ".pdf" => "application/pdf",
+                                        ".png" => "image/png",
+                                        ".txt" => "text/plain",
+                                        ".wav" => "audio/wav",
+                                        ".weba" => "audio/webm",
+                                        ".webm" => "video/webm",
+                                        ".webp" => "image/webp",
+                                        _ => "application/octet-stream",
+                                    });
                             __httpRequestContent.Add(
                                 content: __contentFile,
                                 name: "\"file\"",
@@ -146,7 +174,7 @@ partial void ProcessSessionsUploadFileResponseContent(
                 PrepareSessionsUploadFileRequest(
                     httpClient: HttpClient,
                     httpRequestMessage: __httpRequest,
-                    id: id,
+                    id: id!,
                     request: request);
 
                 return __httpRequest;