diff --git a/plugin/src/main/java/org/opensearch/ml/rest/RestMLCreateConnectorAction.java b/plugin/src/main/java/org/opensearch/ml/rest/RestMLCreateConnectorAction.java
index 177de35152..7ced81225a 100644
--- a/plugin/src/main/java/org/opensearch/ml/rest/RestMLCreateConnectorAction.java
+++ b/plugin/src/main/java/org/opensearch/ml/rest/RestMLCreateConnectorAction.java
@@ -13,6 +13,7 @@
 import java.io.IOException;
 import java.util.List;
 import java.util.Locale;
+import java.util.Set;
 
 import org.opensearch.client.node.NodeClient;
 import org.opensearch.core.xcontent.XContentParser;
@@ -22,12 +23,13 @@
 import org.opensearch.ml.settings.MLFeatureEnabledSetting;
 import org.opensearch.rest.BaseRestHandler;
 import org.opensearch.rest.RestRequest;
+import org.opensearch.rest.RestRequestFilter;
 import org.opensearch.rest.action.RestToXContentListener;
 
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.collect.ImmutableList;
 
-public class RestMLCreateConnectorAction extends BaseRestHandler {
+public class RestMLCreateConnectorAction extends BaseRestHandler implements RestRequestFilter {
     private static final String ML_CREATE_CONNECTOR_ACTION = "ml_create_connector_action";
     private final MLFeatureEnabledSetting mlFeatureEnabledSetting;
 
@@ -76,4 +78,9 @@ MLCreateConnectorRequest getRequest(RestRequest request) throws IOException {
         mlCreateConnectorInput.setTenantId(tenantId);
         return new MLCreateConnectorRequest(mlCreateConnectorInput);
     }
+
+    @Override
+    public Set<String> getFilteredFields() {
+        return Set.of("credential", "*.Authorization");
+    }
 }
diff --git a/plugin/src/main/java/org/opensearch/ml/rest/RestMLRegisterModelAction.java b/plugin/src/main/java/org/opensearch/ml/rest/RestMLRegisterModelAction.java
index a20fb5bd0f..1539d7d8ec 100644
--- a/plugin/src/main/java/org/opensearch/ml/rest/RestMLRegisterModelAction.java
+++ b/plugin/src/main/java/org/opensearch/ml/rest/RestMLRegisterModelAction.java
@@ -17,6 +17,7 @@
 import java.io.IOException;
 import java.util.List;
 import java.util.Locale;
+import java.util.Set;
 
 import org.opensearch.client.node.NodeClient;
 import org.opensearch.cluster.service.ClusterService;
@@ -29,12 +30,13 @@
 import org.opensearch.ml.settings.MLFeatureEnabledSetting;
 import org.opensearch.rest.BaseRestHandler;
 import org.opensearch.rest.RestRequest;
+import org.opensearch.rest.RestRequestFilter;
 import org.opensearch.rest.action.RestToXContentListener;
 
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.collect.ImmutableList;
 
-public class RestMLRegisterModelAction extends BaseRestHandler {
+public class RestMLRegisterModelAction extends BaseRestHandler implements RestRequestFilter {
     private static final String ML_REGISTER_MODEL_ACTION = "ml_register_model_action";
     private final MLFeatureEnabledSetting mlFeatureEnabledSetting;
 
@@ -107,4 +109,9 @@ MLRegisterModelRequest getRequest(RestRequest request) throws IOException {
         }
         return new MLRegisterModelRequest(mlInput);
     }
+
+    @Override
+    public Set<String> getFilteredFields() {
+        return Set.of("connector.credential", "*.Authorization");
+    }
 }
diff --git a/plugin/src/main/java/org/opensearch/ml/rest/RestMLUpdateConnectorAction.java b/plugin/src/main/java/org/opensearch/ml/rest/RestMLUpdateConnectorAction.java
index 3398e7b24f..6b95d2f1f2 100644
--- a/plugin/src/main/java/org/opensearch/ml/rest/RestMLUpdateConnectorAction.java
+++ b/plugin/src/main/java/org/opensearch/ml/rest/RestMLUpdateConnectorAction.java
@@ -15,6 +15,7 @@
 import java.io.IOException;
 import java.util.List;
 import java.util.Locale;
+import java.util.Set;
 
 import org.opensearch.OpenSearchParseException;
 import org.opensearch.client.node.NodeClient;
@@ -24,12 +25,13 @@
 import org.opensearch.ml.settings.MLFeatureEnabledSetting;
 import org.opensearch.rest.BaseRestHandler;
 import org.opensearch.rest.RestRequest;
+import org.opensearch.rest.RestRequestFilter;
 import org.opensearch.rest.action.RestToXContentListener;
 
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.collect.ImmutableList;
 
-public class RestMLUpdateConnectorAction extends BaseRestHandler {
+public class RestMLUpdateConnectorAction extends BaseRestHandler implements RestRequestFilter {
     private static final String ML_UPDATE_CONNECTOR_ACTION = "ml_update_connector_action";
     private MLFeatureEnabledSetting mlFeatureEnabledSetting;
 
@@ -76,4 +78,9 @@ private MLUpdateConnectorRequest getRequest(RestRequest request) throws IOExcept
             throw new OpenSearchParseException(illegalStateException.getMessage());
         }
     }
+
+    @Override
+    public Set<String> getFilteredFields() {
+        return Set.of("credential", "*.Authorization");
+    }
 }
diff --git a/plugin/src/main/java/org/opensearch/ml/rest/RestMLUpdateModelAction.java b/plugin/src/main/java/org/opensearch/ml/rest/RestMLUpdateModelAction.java
index 5f71c66633..ccd4f2933a 100644
--- a/plugin/src/main/java/org/opensearch/ml/rest/RestMLUpdateModelAction.java
+++ b/plugin/src/main/java/org/opensearch/ml/rest/RestMLUpdateModelAction.java
@@ -14,6 +14,7 @@
 import java.io.IOException;
 import java.util.List;
 import java.util.Locale;
+import java.util.Set;
 
 import org.opensearch.OpenSearchParseException;
 import org.opensearch.OpenSearchStatusException;
@@ -26,11 +27,12 @@
 import org.opensearch.ml.settings.MLFeatureEnabledSetting;
 import org.opensearch.rest.BaseRestHandler;
 import org.opensearch.rest.RestRequest;
+import org.opensearch.rest.RestRequestFilter;
 import org.opensearch.rest.action.RestToXContentListener;
 
 import com.google.common.collect.ImmutableList;
 
-public class RestMLUpdateModelAction extends BaseRestHandler {
+public class RestMLUpdateModelAction extends BaseRestHandler implements RestRequestFilter {
 
     private static final String ML_UPDATE_MODEL_ACTION = "ml_update_model_action";
     private MLFeatureEnabledSetting mlFeatureEnabledSetting;
@@ -90,4 +92,9 @@ private MLUpdateModelRequest getRequest(RestRequest request) throws IOException
             throw new OpenSearchParseException(e.getMessage());
         }
     }
+
+    @Override
+    public Set<String> getFilteredFields() {
+        return Set.of("connector.credential", "*.Authorization");
+    }
 }