diff --git a/fc-open-20210406/Teafile b/fc-open-20210406/Teafile
index 264f798488..f1cee2898e 100644
--- a/fc-open-20210406/Teafile
+++ b/fc-open-20210406/Teafile
@@ -40,7 +40,9 @@
     "EndpointUtil": "alibabacloud:EndpointUtil:*",
     "SPI": "alibabacloud:GatewaySPI:*",
     "GatewayClient": "alibabacloud:GatewayPOP:*",
-    "Paginator": "alibabacloud:Paginator:*"
+    "Paginator": "alibabacloud:Paginator:*",
+    "Credential": "alibabacloud:Credential:*",
+    "FCUtil": "alibabacloud:GatewayFC_Util:*"
   },
   "csharp": {
     "className": "Client",
diff --git a/fc-open-20210406/main.tea b/fc-open-20210406/main.tea
index 5cdd96de8a..091c57ffaa 100644
--- a/fc-open-20210406/main.tea
+++ b/fc-open-20210406/main.tea
@@ -5,6 +5,8 @@ import Util;
 import OpenApi;
 import OpenApiUtil;
 import EndpointUtil;
+import Credential;
+import FCUtil;
 
 extends OpenApi;
 
@@ -6177,3 +6179,45 @@ async function updateTrigger(serviceName: string, functionName: string, triggerN
   return updateTriggerWithOptions(serviceName, functionName, triggerName, request, headers, runtime);
 }
 
+
+async function InvokeHTTPTrigger(url: string, method: string, body: bytes, headers: FCUtil.HttpHeader): FCUtil.HttpResponse {
+  var cred : Credential = @credential;
+  var utilClient = new FCUtil(cred);
+  return utilClient.InvokeHTTPTrigger(url, method, body, headers);
+}
+
+async function InvokeAnonymousHTTPTrigger(url: string, method: string, body: bytes, headers: FCUtil.HttpHeader): FCUtil.HttpResponse {
+  var cred : Credential = @credential;
+  var utilClient = new FCUtil(cred);
+  return utilClient.InvokeAnonymousHTTPTrigger(url, method, body, headers);
+}
+
+async function SendHTTPRequestWithAuthorization(req: FCUtil.HttpRequest): FCUtil.HttpResponse {
+  var cred : Credential = @credential;
+  var utilClient = new FCUtil(cred);
+  return utilClient.SendHTTPRequestWithAuthorization(req);
+}
+
+async function SendHTTPRequest(req: FCUtil.HttpRequest): FCUtil.HttpResponse {
+  var cred : Credential = @credential;
+  var utilClient = new FCUtil(cred);
+  return utilClient.SendHTTPRequest(req);
+}
+
+async function SignRequest(req: FCUtil.HttpRequest): FCUtil.HttpRequest {
+  var cred : Credential = @credential;
+  var utilClient = new FCUtil(cred);
+  return utilClient.SignRequest(req);
+}
+
+async function SignRequestWithContentMD5(req: FCUtil.HttpRequest, contentMD5: string): FCUtil.HttpRequest {
+  var cred : Credential = @credential;
+  var utilClient = new FCUtil(cred);
+  return utilClient.SignRequestWithContentMD5(req, contentMD5);
+}
+
+async function BuildHTTPRequest(url: string, method: string, body: bytes, headers: FCUtil.HttpHeader): FCUtil.HttpRequest {
+  var cred : Credential = @credential;
+  var utilClient = new FCUtil(cred);
+  return utilClient.BuildHTTPRequest(url, method, body, headers);
+}
\ No newline at end of file