diff --git a/packages/google-cloud-os-login/synth.metadata b/packages/google-cloud-os-login/synth.metadata
new file mode 100644
index 000000000000..7cd2c24e0941
--- /dev/null
+++ b/packages/google-cloud-os-login/synth.metadata
@@ -0,0 +1,39 @@
+{
+  "updateTime": "2018-12-07T13:22:32.551867Z",
+  "sources": [
+    {
+      "generator": {
+        "name": "artman",
+        "version": "0.16.2",
+        "dockerImage": "googleapis/artman@sha256:2f6b261ee7fe1aedf238991c93a20b3820de37a343d0cacf3e3e9555c2aaf2ea"
+      }
+    },
+    {
+      "git": {
+        "name": "googleapis",
+        "remote": "https://github.com/googleapis/googleapis.git",
+        "sha": "200fbbe59cc7b0077ae525eb5f3d6420c0c53e61",
+        "internalRef": "224174014"
+      }
+    },
+    {
+      "template": {
+        "name": "python_library",
+        "origin": "synthtool.gcp",
+        "version": "2018.12.6"
+      }
+    }
+  ],
+  "destinations": [
+    {
+      "client": {
+        "source": "googleapis",
+        "apiName": "oslogin",
+        "apiVersion": "v1",
+        "language": "python",
+        "generator": "gapic",
+        "config": "google/cloud/oslogin/artman_oslogin_v1.yaml"
+      }
+    }
+  ]
+}
\ No newline at end of file