diff --git a/apier/v1/api_interfaces.go b/apier/v1/api_interfaces.go
index 84c1a4e54..ac736765a 100644
--- a/apier/v1/api_interfaces.go
+++ b/apier/v1/api_interfaces.go
@@ -182,6 +182,11 @@ type CoreSv1Interface interface {
 
 type RateSv1Interface interface {
 	Ping(ign *utils.CGREventWithOpts, reply *string) error
+	CostForEvent(args *utils.ArgsCostForEvent, rpCost *engine.RateProfileCost) error
+}
+
+type RateProfileSv1Interface interface {
+	Ping(ign *utils.CGREventWithOpts, reply *string) error
 }
 
 type ReplicatorSv1Interface interface {
diff --git a/apier/v1/api_interfaces_test.go b/apier/v1/api_interfaces_test.go
index 7091e9afa..e3070ffae 100644
--- a/apier/v1/api_interfaces_test.go
+++ b/apier/v1/api_interfaces_test.go
@@ -64,6 +64,11 @@ func TestResponderInterface(t *testing.T) {
 	_ = ResponderInterface(&engine.Responder{})
 }
 
+func TestRateProfileInterface(t *testing.T) {
+	_ = RateProfileSv1Interface(NewDispatcherRateSv1(nil))
+	_ = RateProfileSv1Interface(NewRateSv1(nil))
+}
+
 func TestCacheSv1Interface(t *testing.T) {
 	_ = CacheSv1Interface(NewDispatcherCacheSv1(nil))
 	_ = CacheSv1Interface(NewCacheSv1(nil))