diff --git a/src/features/Apiexplorer/RequestResponseRenderer/index.tsx b/src/features/Apiexplorer/RequestResponseRenderer/index.tsx
index b40df632..30601daa 100644
--- a/src/features/Apiexplorer/RequestResponseRenderer/index.tsx
+++ b/src/features/Apiexplorer/RequestResponseRenderer/index.tsx
@@ -9,6 +9,7 @@ import styles from '../RequestJSONBox/RequestJSONBox.module.scss';
 import { ValidDialog } from '../ValidDialog';
 import { translate } from '@docusaurus/Translate';
 import { Button } from '@deriv-com/quill-ui';
+import { hasDuplicateKeys } from '@site/src/utils';
 
 export interface IResponseRendererProps<T extends TSocketEndpointNames> {
   name: T;
@@ -33,17 +34,25 @@ function RequestResponseRenderer<T extends TSocketEndpointNames>({
     disableApiNameOnRequest();
   }, []);
 
+  const setInvalidJson = () => {
+    setIsNotValid(true);
+    setToggleModal(false);
+  };
+
   const parseRequestJSON = () => {
     let request_data: TSocketRequestProps<T> extends never ? undefined : TSocketRequestProps<T>;
 
     try {
+      if (hasDuplicateKeys(reqData)) {
+        setInvalidJson();
+        return;
+      }
       request_data = JSON.parse(reqData);
+      return request_data;
     } catch (error) {
-      setIsNotValid(true);
-      setToggleModal(false);
+      setInvalidJson();
+      return;
     }
-
-    return request_data;
   };
 
   const handleClick = useCallback(() => {
@@ -51,9 +60,12 @@ function RequestResponseRenderer<T extends TSocketEndpointNames>({
       setToggleModal(true);
       return;
     }
-    clear();
-    send(parseRequestJSON());
-    setResponseState(true);
+    const request_data = parseRequestJSON();
+    if (request_data) {
+      clear();
+      send(request_data);
+      setResponseState(true);
+    }
   }, [reqData, send, clear, auth, is_logged_in]);
 
   const handleClear = () => {
diff --git a/src/features/Apiexplorer/SubscribeRenderer/index.tsx b/src/features/Apiexplorer/SubscribeRenderer/index.tsx
index 036999c5..56505b06 100644
--- a/src/features/Apiexplorer/SubscribeRenderer/index.tsx
+++ b/src/features/Apiexplorer/SubscribeRenderer/index.tsx
@@ -12,6 +12,7 @@ import PlaygroundSection from '../RequestResponseRenderer/PlaygroundSection';
 import LoginDialog from '../LoginDialog';
 import ValidDialog from '../ValidDialog';
 import { translate } from '@docusaurus/Translate';
+import { hasDuplicateKeys } from '@site/src/utils';
 
 export interface IResponseRendererProps<T extends TSocketSubscribableEndpointNames> {
   name: T;
@@ -54,17 +55,26 @@ function SubscribeRenderer<T extends TSocketSubscribableEndpointNames>({
     if (is_switching_account) unsubscribe();
   }, [is_switching_account]);
 
+  const setInvalidJson = () => {
+    setIsNotValid(true);
+    setToggleModal(false);
+  };
+
   const parseRequestJSON = useCallback(() => {
     let request_data: TSocketRequestProps<T> extends never ? undefined : TSocketRequestProps<T>;
 
     try {
+      if (hasDuplicateKeys(reqData)) {
+        setInvalidJson();
+        return;
+      }
+
       request_data = JSON.parse(reqData);
+      return request_data;
     } catch (error) {
-      setIsNotValid(true);
-      setToggleModal(false);
+      setInvalidJson();
+      return;
     }
-
-    return request_data;
   }, [reqData]);
 
   const handleClick = useCallback(() => {
@@ -72,9 +82,12 @@ function SubscribeRenderer<T extends TSocketSubscribableEndpointNames>({
       setToggleModal(true);
       return;
     }
-    if (is_subscribed) unsubscribe();
-    subscribe(parseRequestJSON());
-    setResponseState(true);
+    const request_data = parseRequestJSON();
+    if (request_data) {
+      if (is_subscribed) unsubscribe();
+      subscribe(request_data);
+      setResponseState(true);
+    }
   }, [parseRequestJSON, subscribe, auth]);
 
   const handleClear = () => {
diff --git a/src/utils/index.ts b/src/utils/index.ts
index 22ce085a..f2d9f9f2 100644
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -240,6 +240,22 @@ export const findVirtualAccount = (accounts: IUserLoginAccount[]) => {
   return accounts.find((item) => item.name.includes('VRTC'));
 };
 
+export const hasDuplicateKeys = (jsonStr: string) => {
+  const keyCounts = new Map();
+  const regex = /"([^"]+)"\s*:/g;
+  let match;
+
+  while ((match = regex.exec(jsonStr)) !== null) {
+    const key = match[1];
+    if (keyCounts.has(key)) {
+      return true; // Found a duplicate
+    }
+    keyCounts.set(key, 1);
+  }
+
+  return false; // No duplicates found
+};
+
 /**
  * Returns the appropriate TMB config URL based on the environment
  * @returns {string} The TMB config URL