diff --git a/crawlers/deploy/ethereum-txpool.service b/crawlers/deploy/ethereum-txpool.service
index d4221a6f..2d3e0e13 100644
--- a/crawlers/deploy/ethereum-txpool.service
+++ b/crawlers/deploy/ethereum-txpool.service
@@ -7,7 +7,7 @@ User=ubuntu
 Group=www-data
 WorkingDirectory=/home/ubuntu/moonstream/crawlers/txpool
 EnvironmentFile=/home/ubuntu/moonstream-secrets/app.env
-ExecStart=/home/ubuntu/moonstream/crawlers/txpool/txpool -blockchain ethereum
+ExecStart=/home/ubuntu/moonstream/crawlers/txpool/txpool -blockchain ethereum -access-id "${NB_CONTROLLER_ACCESS_ID}"
 SyslogIdentifier=ethereum-txpool
 
 [Install]
diff --git a/crawlers/deploy/polygon-txpool.service b/crawlers/deploy/polygon-txpool.service
index cf4dae92..a5079a78 100644
--- a/crawlers/deploy/polygon-txpool.service
+++ b/crawlers/deploy/polygon-txpool.service
@@ -7,7 +7,7 @@ User=ubuntu
 Group=www-data
 WorkingDirectory=/home/ubuntu/moonstream/crawlers/txpool
 EnvironmentFile=/home/ubuntu/moonstream-secrets/app.env
-ExecStart=/home/ubuntu/moonstream/crawlers/txpool/txpool -blockchain polygon
+ExecStart=/home/ubuntu/moonstream/crawlers/txpool/txpool -blockchain polygon -access-id "${NB_CONTROLLER_ACCESS_ID}"
 SyslogIdentifier=polygon-txpool
 
 [Install]
diff --git a/crawlers/txpool/sample.env b/crawlers/txpool/sample.env
index 35b6d5f0..81dc57df 100644
--- a/crawlers/txpool/sample.env
+++ b/crawlers/txpool/sample.env
@@ -1,5 +1,9 @@
-export MOONSTREAM_ETHEREUM_WEB3_PROVIDER_URI="https://<connection_path_uri_to_ethereum_node>"
-export MOONSTREAM_POLYGON_WEB3_PROVIDER_URI="https://<connection_path_uri_to_polygon_node>"
 export HUMBUG_TXPOOL_CLIENT_ID="<client id for the crawling machine>"
 export HUMBUG_TXPOOL_TOKEN="<Generate an integration and a Humbug token from https://bugout.dev/account/teams>"
 export HUMBUG_REPORTER_CRAWLERS_TOKEN="<Bugout Humbug token for crash reports>"
+
+# Nodes environment variables
+export MOONSTREAM_ETHEREUM_WEB3_PROVIDER_URI="https://<connection_path_uri_to_ethereum_node>"
+export MOONSTREAM_POLYGON_WEB3_PROVIDER_URI="https://<connection_path_uri_to_polygon_node>"
+# Moonstream nodebalancer
+export NB_CONTROLLER_ACCESS_ID="<controller_access_id_for_internal_crawlers>"