diff --git a/README.md b/README.md
index 8ec6b9a..7fb28a7 100644
--- a/README.md
+++ b/README.md
@@ -39,8 +39,6 @@ import { init } from '@xuqm/vue3-sdk'
 init({
   appKey: 'ak_your_app_key',
   appSecret: 'as_your_app_secret',
-  apiBaseUrl: 'https://api.xuqm.com',
-  imBaseUrl: 'wss://im.xuqm.com',
   debug: import.meta.env.DEV,
 })
 ```
diff --git a/src/core/endpoints.ts b/src/core/endpoints.ts
new file mode 100644
index 0000000..988b562
--- /dev/null
+++ b/src/core/endpoints.ts
@@ -0,0 +1,2 @@
+export const DEFAULT_API_BASE_URL = 'https://dev.xuqinmin.com'
+export const DEFAULT_IM_WS_URL = 'wss://dev.xuqinmin.com/ws/im'
diff --git a/src/core/sdk.ts b/src/core/sdk.ts
index e178a64..263f38b 100644
--- a/src/core/sdk.ts
+++ b/src/core/sdk.ts
@@ -1,5 +1,6 @@
 import type { SDKConfig } from '../types'
 import { configureHttp } from './http'
+import { DEFAULT_API_BASE_URL } from './endpoints'
 
 let _config: SDKConfig | null = null
 let _token: string | null = null
@@ -7,7 +8,7 @@ let _userId: string | null = null
 
 export function init(config: SDKConfig) {
   _config = config
-  configureHttp(config.apiBaseUrl, () => _token)
+  configureHttp(DEFAULT_API_BASE_URL, () => _token)
   if (config.debug) console.log('[XuqmSDK] initialized', config.appKey)
 }
 
diff --git a/src/im/ImClient.ts b/src/im/ImClient.ts
index 796276f..6ed1618 100644
--- a/src/im/ImClient.ts
+++ b/src/im/ImClient.ts
@@ -1,5 +1,6 @@
 import type { ImMessage, SendMessageParams, ImEventMap } from '../types'
 import { getConfig, getToken, getUserId } from '../core/sdk'
+import { DEFAULT_IM_WS_URL } from '../core/endpoints'
 
 type EventListener<K extends keyof ImEventMap> = ImEventMap[K]
 
@@ -35,7 +36,7 @@ export class ImClient {
     if (this.destroyed) return
     const config = getConfig()
     const token = getToken()
-    const url = `${config.imBaseUrl}/ws/im?token=${token ?? ''}`
+    const url = `${DEFAULT_IM_WS_URL}?token=${token ?? ''}`
 
     this.ws = new WebSocket(url)
 
diff --git a/src/types/index.ts b/src/types/index.ts
index 09440d4..e258175 100644
--- a/src/types/index.ts
+++ b/src/types/index.ts
@@ -1,8 +1,6 @@
 export interface SDKConfig {
   appKey: string
   appSecret: string
-  apiBaseUrl: string
-  imBaseUrl: string
   debug?: boolean
 }