diff --git a/app/api/sdk.js b/app/api/sdk.js
deleted file mode 100644
index 6e8c51d..0000000
--- a/app/api/sdk.js
+++ /dev/null
@@ -1,102 +0,0 @@
-import axios from 'axios'
-
-export class LangGeniusClient {
-  constructor(apiKey, baseUrl = 'https://api.langgenius.ai/v1') {
-    this.apiKey = apiKey
-    this.baseUrl = baseUrl
-  }
-
-  async sendRequest(method, endpoint, data = null, params = null, stream = false) {
-    const headers = {
-      'Authorization': `Bearer ${this.apiKey}`,
-      'Content-Type': 'application/json',
-    }
-
-    const url = `${this.baseUrl}${endpoint}`
-    let response
-    if (!stream) {
-      response = await axios({
-        method,
-        url,
-        data,
-        params,
-        headers,
-        responseType: stream ? 'stream' : 'json',
-      })
-    } else {
-      response = await fetch(url, {
-        headers,
-        method,
-        body: JSON.stringify(data),
-      })
-    }
-
-    return response
-  }
-
-  messageFeedback(messageId, rating, user) {
-    const data = {
-      rating,
-      user,
-    }
-    return this.sendRequest('POST', `/messages/${messageId}/feedbacks`, data)
-  }
-
-  getApplicationParameters(user) {
-    const params = { user }
-    return this.sendRequest('GET', '/parameters', null, params)
-  }
-}
-
-export class CompletionClient extends LangGeniusClient {
-  createCompletionMessage(inputs, query, responseMode, user) {
-    const data = {
-      inputs,
-      query,
-      responseMode,
-      user,
-    }
-    return this.sendRequest('POST', '/completion-messages', data, null, responseMode === 'streaming')
-  }
-}
-
-export class ChatClient extends LangGeniusClient {
-  createChatMessage(inputs, query, user, responseMode = 'blocking', conversationId = null) {
-    const data = {
-      inputs,
-      query,
-      user,
-      responseMode,
-    }
-    if (conversationId)
-      data.conversation_id = conversationId
-
-    return this.sendRequest('POST', '/chat-messages', data, null, responseMode === 'streaming')
-  }
-
-  getConversationMessages(user, conversationId = '', firstId = null, limit = null) {
-    const params = { user }
-
-    if (conversationId)
-      params.conversation_id = conversationId
-
-    if (firstId)
-      params.first_id = firstId
-
-    if (limit)
-      params.limit = limit
-
-    return this.sendRequest('GET', '/messages', null, params)
-  }
-
-  getConversations(user, firstId = null, limit = null, pinned = null) {
-    const params = { user, first_id: firstId, limit, pinned }
-    return this.sendRequest('GET', '/conversations', null, params)
-  }
-
-  renameConversation(conversationId, name, user) {
-    const data = { name, user }
-    return this.sendRequest('PATCH', `/conversations/${conversationId}`, data)
-  }
-}
-
diff --git a/app/api/site/route.ts b/app/api/site/route.ts
deleted file mode 100644
index 86aff37..0000000
--- a/app/api/site/route.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-import { type NextRequest } from 'next/server'
-import { NextResponse } from 'next/server'
-import { getInfo, setSession } from '@/app/api/utils/common'
-import { APP_INFO } from '@/config'
-
-export async function GET(request: NextRequest) {
-  const { sessionId } = getInfo(request);
-  return NextResponse.json(APP_INFO, {
-    headers: setSession(sessionId)
-  })
-}
\ No newline at end of file
diff --git a/app/api/utils/common.ts b/app/api/utils/common.ts
index 6a3a46a..2330499 100644
--- a/app/api/utils/common.ts
+++ b/app/api/utils/common.ts
@@ -1,8 +1,10 @@
 import { type NextRequest } from 'next/server'
 import { APP_ID, API_KEY } from '@/config'
-import { ChatClient } from '../sdk'
+import { ChatClient } from 'langgenius-client'
+import uuid from 'uuid'
+
 const userPrefix = `user_${APP_ID}:`;
-const uuid = require('uuid')
+// const uuid = require('uuid')
 
 export const getInfo = (request: NextRequest) => {
   const sessionId = request.cookies.get('session_id')?.value || uuid.v4();
diff --git a/package.json b/package.json
index 9867256..fee6e8a 100644
--- a/package.json
+++ b/package.json
@@ -31,6 +31,7 @@
     "i18next-resources-to-backend": "^1.1.3",
     "immer": "^9.0.19",
     "js-cookie": "^3.0.1",
+    "langgenius-client": "^1.0.0",
     "negotiator": "^0.6.3",
     "next": "13.2.4",
     "react": "18.2.0",
diff --git a/service/index.ts b/service/index.ts
index 35e3eef..8028e0a 100644
--- a/service/index.ts
+++ b/service/index.ts
@@ -15,10 +15,6 @@ export const sendChatMessage = async (body: Record<string, any>, { onData, onCom
   }, { onData, onCompleted, onError })
 }
 
-export const fetchAppInfo = async () => {
-  return get('site')
-}
-
 export const fetchConversations = async () => {
   return get('conversations', { params: { limit: 20, first_id: '' } })
 }