diff --git a/metrics/metrics.go b/metrics/metrics.go
new file mode 100644
index 0000000..bb79408
--- /dev/null
+++ b/metrics/metrics.go
@@ -0,0 +1,11 @@
+package metrics
+
+import (
+	"net/http"
+
+	"github.com/origadmin/toolkits/context"
+)
+
+type Metrics interface {
+	ObserverHTTP(ctx context.Context, request *http.Request, response *http.Response, err error)
+}