diff --git a/watch-dog-be/src/main/kotlin/dev/usbharu/unos/watchdog/be/Main.kt b/watch-dog-be/src/main/kotlin/dev/usbharu/unos/watchdog/be/Main.kt
index 69a483e..7a646bf 100644
--- a/watch-dog-be/src/main/kotlin/dev/usbharu/unos/watchdog/be/Main.kt
+++ b/watch-dog-be/src/main/kotlin/dev/usbharu/unos/watchdog/be/Main.kt
@@ -3,9 +3,8 @@ package dev.usbharu.unos.watchdog.be
 import com.mongodb.ConnectionString
 import com.mongodb.MongoClientSettings
 import com.mongodb.kotlin.client.coroutine.MongoClient
-import com.mongodb.kotlin.client.coroutine.MongoDatabase
 import dev.usbharu.unos.watchdog.be.domain.MongoMetricsRepository
-import io.grpc.ServerBuilder
+import io.grpc.ManagedChannelBuilder
 import io.ktor.http.*
 import io.ktor.serialization.kotlinx.json.*
 import io.ktor.server.application.*
@@ -13,7 +12,10 @@ import io.ktor.server.plugins.callloging.*
 import io.ktor.server.plugins.contentnegotiation.*
 import io.ktor.server.plugins.cors.routing.*
 import io.ktor.server.routing.*
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.asExecutor
 import org.slf4j.event.Level
+import watchdog.WatchdogBellServiceGrpcKt
 import java.net.URI
 
 fun main(args: Array<String>) {
@@ -25,7 +27,7 @@ fun Application.module() {
     install(ContentNegotiation) {
         json()
     }
-    install(CORS){
+    install(CORS) {
         allowMethod(HttpMethod.Get)
         allowMethod(HttpMethod.Post)
         allowMethod(HttpMethod.Put)
@@ -38,7 +40,7 @@ fun Application.module() {
             true
         }
     }
-    install(CallLogging){
+    install(CallLogging) {
         level = Level.TRACE
     }
 
@@ -56,7 +58,22 @@ fun Application.module() {
 
     val mongoMetricsRepository = MongoMetricsRepository(database)
 
-    grpc(grpcPort,PushMetricsService(mongoMetricsRepository))
+    val useBell = environment.config.property("watchdog.bell.use").getString().toBoolean()
+
+    val bell = if (useBell) {
+        val bellHost = environment.config.property("watchdog.bell.host").getString()
+        val bellPort = environment.config.property("watchdog.bell.port").getString().toInt()
+
+        val channel =
+            ManagedChannelBuilder.forAddress(bellHost, bellPort).usePlaintext().executor(Dispatchers.IO.asExecutor())
+                .build()
+        WatchdogBellServiceGrpcKt.WatchdogBellServiceCoroutineStub(channel)
+    } else {
+        null
+    }
+
+
+    grpc(grpcPort, PushMetricsService(mongoMetricsRepository, bell))
     routing {
         api(ApiController(mongoMetricsRepository))
     }
diff --git a/watch-dog-be/src/main/kotlin/dev/usbharu/unos/watchdog/be/PushMetricsService.kt b/watch-dog-be/src/main/kotlin/dev/usbharu/unos/watchdog/be/PushMetricsService.kt
index 26d0df5..8c93d4b 100644
--- a/watch-dog-be/src/main/kotlin/dev/usbharu/unos/watchdog/be/PushMetricsService.kt
+++ b/watch-dog-be/src/main/kotlin/dev/usbharu/unos/watchdog/be/PushMetricsService.kt
@@ -6,18 +6,22 @@ import dev.usbharu.unos.watchdog.be.domain.Metric
 import dev.usbharu.unos.watchdog.be.domain.MetricsRepository
 import dev.usbharu.unos.watchdog.be.domain.Status
 import kotlinx.datetime.toKotlinInstant
-import watchdog.PushMetrics
-import watchdog.PushMetricsServiceGrpcKt
+import watchdog.*
 import java.util.*
 import kotlin.coroutines.CoroutineContext
 import kotlin.coroutines.EmptyCoroutineContext
 
 class PushMetricsService(
     private val metricsRepository: MetricsRepository,
+    private val bell: WatchdogBellServiceGrpcKt.WatchdogBellServiceCoroutineStub?,
     coroutineContext: CoroutineContext = EmptyCoroutineContext
 ) :
     PushMetricsServiceGrpcKt.PushMetricsServiceCoroutineImplBase(coroutineContext) {
     override suspend fun push(request: PushMetrics.Metric): Empty {
+
+
+        bell(request)
+
         metricsRepository.save(
             Metric(
                 id = UUID.randomUUID().toString(),
@@ -31,4 +35,25 @@ class PushMetricsService(
         )
         return Empty.getDefaultInstance()
     }
+
+    private suspend fun bell(request: PushMetrics.Metric) {
+        val level = when (request.status) {
+            watchdog.PushMetrics.Status.OK -> return
+            watchdog.PushMetrics.Status.DEAD -> PushBell.Bell.Level.FATAL
+            watchdog.PushMetrics.Status.UNKNOWN -> PushBell.Bell.Level.WARN
+            watchdog.PushMetrics.Status.NOT_GOOD -> PushBell.Bell.Level.WARN
+            watchdog.PushMetrics.Status.UNRECOGNIZED -> PushBell.Bell.Level.WARN
+        }
+
+
+        bell?.push(
+            bell {
+                this.level = level
+                this.title = "${request.name} is ${request.status}"
+                this.location = request.domain
+                this.timestamp = request.timestamp
+                this.message = request.message
+            }
+        )
+    }
 }
\ No newline at end of file
diff --git a/watch-dog-be/src/main/resources/application.conf b/watch-dog-be/src/main/resources/application.conf
index ee08044..b6e73bc 100644
--- a/watch-dog-be/src/main/resources/application.conf
+++ b/watch-dog-be/src/main/resources/application.conf
@@ -9,6 +9,7 @@ ktor {
 }
 
 watchdog {
+    front-url = "http://localhost:8081"
     db {
         url = "mongodb://localhost:27017"
         database = "watchdog"
@@ -16,5 +17,9 @@ watchdog {
     grpc {
         port = 50051
     }
-
+    bell {
+        use = "true"
+        host = "localhost"
+        port = 50051
+    }
 }
\ No newline at end of file