diff --git a/assets/js/all_apis.js b/assets/js/all_apis.js
new file mode 100644
index 0000000..95dbefd
--- /dev/null
+++ b/assets/js/all_apis.js
@@ -0,0 +1,171 @@
+async function getChatEvents(chatId, localHistoryId) {
+    const response = await fetch('/api/chatPollEvents', {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/json'
+        },
+        body: JSON.stringify({
+            chatUpdReq: {
+                chatId: chatId,
+                LocalHistoryId: localHistoryId
+            }
+        })
+    });
+    const data = await response.json();
+    return data.chatUpdResp;
+}
+
+
+async function getChatListEvents(localHistoryId) {
+    const response = await fetch('/api/chatListPollEvents', {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/json'
+        },
+        body: JSON.stringify({
+            chatListUpdReq: {
+                LocalHistoryId: localHistoryId
+            }
+        })
+    });
+    const data = await response.json();
+    return data.chatListUpdResp;
+}
+
+
+async function getMessageNeighbours(chatId, msgId, direction, amount, localHistoryId) {
+    const response = await fetch('/api/getMessageNeighbours', {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/json'
+        },
+        body: JSON.stringify({
+            chatUpdReq: {
+                chatId: chatId,
+                LocalHistoryId: localHistoryId
+            },
+            msgId: msgId,
+            direction: direction,
+            amount: amount
+        })
+    });
+    const data = await response.json();
+    return data.chatUpdResp;
+}
+
+
+async function sendMessage(chatId, localHistoryId, text) {
+    const response = await fetch('/api/sendMessage', {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/json'
+        },
+        body: JSON.stringify({
+            chatUpdReq: {
+                chatId: chatId,
+                LocalHistoryId: localHistoryId
+            },
+            content: {
+                text: text
+            }
+        })
+    });
+    const data = await response.json();
+    return data.chatUpdResp;
+}
+
+
+async function deleteMessage(chatId, localHistoryId, messageId) {
+    const response = await fetch('/api/deleteMessage', {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/json'
+        },
+        body: JSON.stringify({
+            chatUpdReq: {
+                chatId: chatId,
+                LocalHistoryId: localHistoryId
+            },
+            id: messageId
+        })
+    });
+    const data = await response.json();
+    return data.chatUpdResp;
+}
+
+
+async function addMemberToChat(chatId, localHistoryId, nickname) {
+    const response = await fetch('/api/addMemberToChat', {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/json'
+        },
+        body: JSON.stringify({
+            chatUpdReq: {
+                chatId: chatId,
+                LocalHistoryId: localHistoryId
+            },
+            nickname: nickname
+        })
+    });
+    const data = await response.json();
+    return data.chatUpdResp;
+}
+
+
+async function removeMemberFromChat(chatId, localHistoryId, userId) {
+    const response = await fetch('/api/removeMemberFromChat', {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/json'
+        },
+        body: JSON.stringify({
+            chatUpdReq: {
+                chatId: chatId,
+                LocalHistoryId: localHistoryId
+            },
+            userId: userId
+        })
+    });
+    const data = await response.json();
+    return data.chatUpdResp;
+}
+
+
+async function createChat(localHistoryId, name, nickname) {
+    const response = await fetch('/api/createChat', {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/json'
+        },
+        body: JSON.stringify({
+            chatListUpdReq: {
+                LocalHistoryId: localHistoryId
+            },
+            content: {
+                name: name,
+                nickname: nickname
+            }
+        })
+    });
+    const data = await response.json();
+    return data.chatListUpdResp;
+}
+
+
+async function leaveChat(localHistoryId, chatId) {
+    const response = await fetch('/api/leaveChat', {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/json'
+        },
+        body: JSON.stringify({
+            chatListUpdReq: {
+                LocalHistoryId: localHistoryId
+            },
+            chatId: chatId
+        })
+    });
+    const data = await response.json();
+    return data.chatListUpdResp;
+}
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