diff --git a/app/src/main/java/com/example/login_v3/data/api/Main_API_Service.kt b/app/src/main/java/com/example/login_v3/data/api/Main_API_Service.kt
index 196463e..185747f 100644
--- a/app/src/main/java/com/example/login_v3/data/api/Main_API_Service.kt
+++ b/app/src/main/java/com/example/login_v3/data/api/Main_API_Service.kt
@@ -65,4 +65,11 @@ interface TecnologiaApi {
     suspend fun rejectFriendRequest(
         @Path("fromUserId") fromUserId: String
     ): Response<Unit>
+
+    // add friends
+    @POST("api/friends/request")
+    suspend fun sendFriendRequest(
+        @Body request: AddFriendRequest
+    ): Response<Unit>
+
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/login_v3/data/api/api_class/FriendRequest.kt b/app/src/main/java/com/example/login_v3/data/api/api_class/FriendRequest.kt
index 1481c61..5178185 100644
--- a/app/src/main/java/com/example/login_v3/data/api/api_class/FriendRequest.kt
+++ b/app/src/main/java/com/example/login_v3/data/api/api_class/FriendRequest.kt
@@ -65,6 +65,10 @@ data class PendingFriendApiModel(
     @Json(name = "created_at")
     val createdAt: String?
 )
+//add friends
+data class AddFriendRequest(
+    @Json(name = "friend_id") val friendId: String
+)
 
 val PendingFriendApiModel.fullPendingAvatarUrl: Any
     get() = if (pendingAvatarUrl.isNullOrBlank()) {
diff --git a/app/src/main/java/com/example/login_v3/data/repository/basic/Friends_Repository.kt b/app/src/main/java/com/example/login_v3/data/repository/basic/Friends_Repository.kt
index a9fae7f..222e323 100644
--- a/app/src/main/java/com/example/login_v3/data/repository/basic/Friends_Repository.kt
+++ b/app/src/main/java/com/example/login_v3/data/repository/basic/Friends_Repository.kt
@@ -1,6 +1,7 @@
 package com.example.login_v3.data.repository.basic
 
 import com.example.login_v3.data.api.TecnologiaApi
+import com.example.login_v3.data.api.api_class.AddFriendRequest
 import com.example.login_v3.data.api.api_class.Friend
 import com.example.login_v3.data.api.api_class.PendingFriendApiModel
 import retrofit2.Response
@@ -54,4 +55,13 @@ class FriendsRepository @Inject constructor(
             Result.failure(e)
         }
     }
+    //add friends
+    suspend fun sendFriendRequest(friendId: String): Result<Unit> {
+        return safeApiCall {
+            // 確保這裡的參數名稱與 Data Class 定義的一模一樣
+            val request = AddFriendRequest(friendId = friendId)
+            apiService.sendFriendRequest(request)
+        }
+    }
+
 }
\ No newline at end of file