diff --git a/pkg/meta/metadata.go b/pkg/meta/metadata.go
new file mode 100644
index 0000000..d648339
--- /dev/null
+++ b/pkg/meta/metadata.go
@@ -0,0 +1,23 @@
+package meta
+
+import (
+	"context"
+	"github.com/go-kratos/kratos/v2/metadata"
+)
+
+const (
+	XMdGlobalOperator = "x-md-global-operator"
+	XMdGlobalAppid    = "x-md-global-appid"
+	XMdServiceName    = "x-md-service-name"
+)
+
+func Set(ctx context.Context, kv ...string) context.Context {
+	return metadata.AppendToClientContext(ctx, kv...)
+}
+
+func Get(ctx context.Context, key string) string {
+	if meta, ok := metadata.FromClientContext(ctx); ok {
+		return meta.Get(key)
+	}
+	return ""
+}