diff --git a/commands/daemon/daemon.go b/commands/daemon/daemon.go
index 9c442070523..a36d63bc81d 100644
--- a/commands/daemon/daemon.go
+++ b/commands/daemon/daemon.go
@@ -509,6 +509,9 @@ func (s *ArduinoCoreServerImpl) Monitor(stream rpc.ArduinoCoreService_MonitorSer
 		return err
 	}
 
+	// Send a message with Success set to true to notify the caller of the port being now active
+	_ = stream.Send(&rpc.MonitorResponse{Success: true})
+
 	go func() {
 		// close port on gRPC call EOF or errors
 		defer portProxy.Close()
diff --git a/rpc/cc/arduino/cli/commands/v1/monitor.pb.go b/rpc/cc/arduino/cli/commands/v1/monitor.pb.go
index 7ec49847bd8..14395a77d66 100644
--- a/rpc/cc/arduino/cli/commands/v1/monitor.pb.go
+++ b/rpc/cc/arduino/cli/commands/v1/monitor.pb.go
@@ -182,6 +182,8 @@ type MonitorResponse struct {
 	// report the default settings) or after a new port_configuration is sent
 	// (to report the new settings applied)
 	AppliedSettings []*MonitorPortSetting `protobuf:"bytes,3,rep,name=applied_settings,json=appliedSettings,proto3" json:"applied_settings,omitempty"`
+	// A message with this field set to true is sent as soon as the port is succesfully opened
+	Success bool `protobuf:"varint,4,opt,name=success,proto3" json:"success,omitempty"`
 }
 
 func (x *MonitorResponse) Reset() {
@@ -237,6 +239,13 @@ func (x *MonitorResponse) GetAppliedSettings() []*MonitorPortSetting {
 	return nil
 }
 
+func (x *MonitorResponse) GetSuccess() bool {
+	if x != nil {
+		return x.Success
+	}
+	return false
+}
+
 type MonitorPortSetting struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -529,7 +538,7 @@ var file_cc_arduino_cli_commands_v1_monitor_proto_rawDesc = []byte{
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@@ -539,45 +548,47 @@ var file_cc_arduino_cli_commands_v1_monitor_proto_rawDesc = []byte{
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 }
 
 var (
diff --git a/rpc/cc/arduino/cli/commands/v1/monitor.proto b/rpc/cc/arduino/cli/commands/v1/monitor.proto
index 304cc13c589..68d52fa02ae 100644
--- a/rpc/cc/arduino/cli/commands/v1/monitor.proto
+++ b/rpc/cc/arduino/cli/commands/v1/monitor.proto
@@ -51,6 +51,9 @@ message MonitorResponse {
   // report the default settings) or after a new port_configuration is sent
   // (to report the new settings applied)
   repeated MonitorPortSetting applied_settings = 3;
+  // A message with this field set to true is sent as soon as the port is
+  // succesfully opened
+  bool success = 4;
 }
 
 message MonitorPortSetting {