diff --git a/packages/service/core/app/mcp.ts b/packages/service/core/app/mcp.ts
index 4ea6c544e..3c5239b15 100644
--- a/packages/service/core/app/mcp.ts
+++ b/packages/service/core/app/mcp.ts
@@ -41,14 +41,23 @@ export class MCPClient {
           },
           eventSourceInit: {
             fetch: (url, init) => {
-              const headers = new Headers({
-                ...init?.headers,
+              const mergedHeaders: Record<string, string> = {
                 ...this.headers
-              });
+              };
+
+              if (init?.headers) {
+                if (init.headers instanceof Headers) {
+                  init.headers.forEach((value, key) => {
+                    mergedHeaders[key] = value;
+                  });
+                } else if (typeof init.headers === 'object') {
+                  Object.assign(mergedHeaders, init.headers);
+                }
+              }
 
               return fetch(url, {
                 ...init,
-                headers
+                headers: mergedHeaders
               });
             }
           }
diff --git a/projects/app/src/pageComponents/app/detail/WorkflowComponents/context/workflowInitContext.tsx b/projects/app/src/pageComponents/app/detail/WorkflowComponents/context/workflowInitContext.tsx
index 72d02ab11..6a8e69dae 100644
--- a/projects/app/src/pageComponents/app/detail/WorkflowComponents/context/workflowInitContext.tsx
+++ b/projects/app/src/pageComponents/app/detail/WorkflowComponents/context/workflowInitContext.tsx
@@ -150,6 +150,9 @@ const WorkflowInitContextProvider = ({
         name: node.data.name,
         parentNodeId: node.data.parentNodeId,
         flowNodeType: node.data.flowNodeType,
+        version: node.data.version,
+        versionLabel: node.data.versionLabel,
+        isLatestVersion: node.data.isLatestVersion,
         inputs: node.data.inputs.map((input) => {
           return {
             key: input.key,