diff --git a/storage/storage_transfer/README.md b/storage/storage_transfer/README.md
index 2c3f7762ff3..0dab787d303 100644
--- a/storage/storage_transfer/README.md
+++ b/storage/storage_transfer/README.md
@@ -8,7 +8,7 @@ This app creates two types of transfers using the Transfer Service tool.
   1. Go to the [Developers Console](https://cloud.google.com/console) and create or select your project.
      You will need the project ID later.
 1. Within Developers Console, select APIs & auth > Credentials.
-  1. Add a new JSON key credential for a service account.
+  1. Select Add credentials > Service account > JSON key.
   1. Set the environment variable GOOGLE_APPLICATION_CREDENTIALS to point to your JSON key.
 1. Add the Storage Transfer service account, cloud-mobility@system.gserviceaccount.com as an
    editor of your project.
diff --git a/storage/storage_transfer/aws_request.py b/storage/storage_transfer/aws_request.py
index 84714de4793..40274175335 100644
--- a/storage/storage_transfer/aws_request.py
+++ b/storage/storage_transfer/aws_request.py
@@ -11,6 +11,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+# [START all]
 import json
 import logging
 
@@ -66,3 +67,4 @@ def main():
 
 if __name__ == '__main__':
     main()
+# [END all]
diff --git a/storage/storage_transfer/create_client.py b/storage/storage_transfer/create_client.py
index c5708950918..c5e0a16434d 100644
--- a/storage/storage_transfer/create_client.py
+++ b/storage/storage_transfer/create_client.py
@@ -11,6 +11,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+# [START all]
 import logging
 
 from apiclient import discovery
@@ -25,3 +26,4 @@ def create_transfer_client():
     logging.getLogger().setLevel(logging.DEBUG)
     credentials = GoogleCredentials.get_application_default()
     return discovery.build('storagetransfer', 'v1', credentials=credentials)
+# [END all]
diff --git a/storage/storage_transfer/nearline_request.py b/storage/storage_transfer/nearline_request.py
index 2e16b52252e..d31bc190720 100644
--- a/storage/storage_transfer/nearline_request.py
+++ b/storage/storage_transfer/nearline_request.py
@@ -11,6 +11,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+# [START all]
 import json
 import logging
 
@@ -62,3 +63,4 @@ def main():
 
 if __name__ == '__main__':
     main()
+# [END all]
diff --git a/storage/storage_transfer/transfer_check.py b/storage/storage_transfer/transfer_check.py
index 5b1029819bb..7e9055fe49b 100644
--- a/storage/storage_transfer/transfer_check.py
+++ b/storage/storage_transfer/transfer_check.py
@@ -11,6 +11,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+# [START all]
 import json
 import logging
 
@@ -42,3 +43,4 @@ def main():
 
 if __name__ == '__main__':
     main()
+# [END all]