diff --git a/app/src/main/java/com/example/openapigenerationtest/QiitaItemService.kt b/app/src/main/java/com/example/openapigenerationtest/QiitaItemService.kt
new file mode 100644
index 0000000..b00ba5b
--- /dev/null
+++ b/app/src/main/java/com/example/openapigenerationtest/QiitaItemService.kt
@@ -0,0 +1,39 @@
+package com.example.openapigenerationtest
+
+import com.example.openapigenerationtestapi.infrastructure.ApiClient
+import com.example.openapigenerationtestapi.sp.api.ItemApi
+import com.example.openapigenerationtestapi.sp.model.Item
+import okhttp3.Interceptor
+import okhttp3.OkHttpClient
+import okhttp3.logging.HttpLoggingInterceptor
+import retrofit2.Callback
+
+class QiitaItemService {
+
+    private val itemApi: ItemApi
+
+    init {
+        val loggingInterceptor =  HttpLoggingInterceptor().apply {
+            setLevel(HttpLoggingInterceptor.Level.BODY)
+        }
+        val httpClient: OkHttpClient = OkHttpClient.Builder().apply {
+            addInterceptor(loggingInterceptor)
+            addInterceptor(Interceptor { chain ->
+                chain.proceed(
+                    chain.request()
+                        .newBuilder()
+                        .header("Content-Type", "application/json")
+                        .header("Authorization", "Bearer 46f9e2655f4f0afb5ee0d721acb03693171aed26")
+                        .build()
+                )
+            })
+        }.build()
+
+        itemApi = ApiClient(okHttpClient = httpClient).createService(ItemApi::class.java)
+    }
+
+    fun getAllItems(page: Int, perPage: Int, query: String, callback: Callback<Array<Item>>) {
+        val call = itemApi.getAllItems(page.toString(), perPage.toString(), query)
+        call.enqueue(callback)
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/openapigenerationtest/QiitaUserService.kt b/app/src/main/java/com/example/openapigenerationtest/QiitaUserService.kt
new file mode 100644
index 0000000..b35f34f
--- /dev/null
+++ b/app/src/main/java/com/example/openapigenerationtest/QiitaUserService.kt
@@ -0,0 +1,44 @@
+package com.example.openapigenerationtest
+
+import com.example.openapigenerationtestapi.infrastructure.ApiClient
+import com.example.openapigenerationtestapi.sp.api.UserApi
+import com.example.openapigenerationtestapi.sp.model.User
+import okhttp3.Interceptor
+import okhttp3.OkHttpClient
+import okhttp3.logging.HttpLoggingInterceptor
+import retrofit2.Callback
+
+class QiitaUserService {
+
+    private val userApi: UserApi
+
+    init {
+        val loggingInterceptor =  HttpLoggingInterceptor().apply {
+            setLevel(HttpLoggingInterceptor.Level.BODY)
+        }
+        val httpClient: OkHttpClient = OkHttpClient.Builder().apply {
+            addInterceptor(loggingInterceptor)
+            addInterceptor(Interceptor { chain ->
+                chain.proceed(
+                    chain.request()
+                        .newBuilder()
+                        .header("Content-Type", "application/json")
+                        .header("Authorization", "Bearer 46f9e2655f4f0afb5ee0d721acb03693171aed26")
+                        .build()
+                )
+            })
+        }.build()
+
+        userApi = ApiClient(okHttpClient = httpClient).createService(UserApi::class.java)
+    }
+
+    fun getAllUser(page: Int, perPage: Int, callback: Callback<Array<User>>) {
+        val call = userApi.getAllUser(page.toString(), perPage.toString())
+        call.enqueue(callback)
+    }
+
+    fun getUser(userId: String, callback: Callback<User>) {
+        val call = userApi.getUser(userId)
+        call.enqueue(callback)
+    }
+}
\ No newline at end of file