diff --git a/common/src/test/java/org/opensearch/ml/common/RemoteModelTests.java b/common/src/test/java/org/opensearch/ml/common/RemoteModelTests.java
index bcbcc149c9..263c1b0f31 100644
--- a/common/src/test/java/org/opensearch/ml/common/RemoteModelTests.java
+++ b/common/src/test/java/org/opensearch/ml/common/RemoteModelTests.java
@@ -8,9 +8,9 @@
 import org.junit.Assert;
 import org.junit.Test;
 import org.opensearch.common.io.stream.BytesStreamOutput;
-import org.opensearch.common.io.stream.StreamInput;
 import org.opensearch.common.xcontent.LoggingDeprecationHandler;
 import org.opensearch.common.xcontent.XContentType;
+import org.opensearch.core.common.io.stream.StreamInput;
 import org.opensearch.core.xcontent.NamedXContentRegistry;
 import org.opensearch.core.xcontent.XContentBuilder;
 import org.opensearch.core.xcontent.XContentParser;
diff --git a/common/src/test/java/org/opensearch/ml/common/dataset/remote/RemoteInferenceInputDataSetTest.java b/common/src/test/java/org/opensearch/ml/common/dataset/remote/RemoteInferenceInputDataSetTest.java
index 618bc336a7..c08cb1a468 100644
--- a/common/src/test/java/org/opensearch/ml/common/dataset/remote/RemoteInferenceInputDataSetTest.java
+++ b/common/src/test/java/org/opensearch/ml/common/dataset/remote/RemoteInferenceInputDataSetTest.java
@@ -3,7 +3,7 @@
 import org.junit.Assert;
 import org.junit.Test;
 import org.opensearch.common.io.stream.BytesStreamOutput;
-import org.opensearch.common.io.stream.StreamInput;
+import org.opensearch.core.common.io.stream.StreamInput;
 import org.opensearch.ml.common.dataset.MLInputDataset;
 
 import java.io.IOException;
diff --git a/ml-algorithms/src/main/java/org/opensearch/ml/engine/algorithms/remote/AwsConnectorExecutor.java b/ml-algorithms/src/main/java/org/opensearch/ml/engine/algorithms/remote/AwsConnectorExecutor.java
index 3102bd91dc..f859dc08b3 100644
--- a/ml-algorithms/src/main/java/org/opensearch/ml/engine/algorithms/remote/AwsConnectorExecutor.java
+++ b/ml-algorithms/src/main/java/org/opensearch/ml/engine/algorithms/remote/AwsConnectorExecutor.java
@@ -9,13 +9,13 @@
 import lombok.Setter;
 import lombok.extern.log4j.Log4j2;
 import org.opensearch.OpenSearchStatusException;
+import org.opensearch.core.rest.RestStatus;
 import org.opensearch.ml.common.connector.AwsConnector;
 import org.opensearch.ml.common.connector.Connector;
 import org.opensearch.ml.common.exception.MLException;
 import org.opensearch.ml.common.input.MLInput;
 import org.opensearch.ml.common.output.model.ModelTensors;
 import org.opensearch.ml.engine.annotation.ConnectorExecutor;
-import org.opensearch.rest.RestStatus;
 import org.opensearch.script.ScriptService;
 import software.amazon.awssdk.core.internal.http.loader.DefaultSdkHttpClientBuilder;
 import software.amazon.awssdk.core.sync.RequestBody;
diff --git a/plugin/src/main/java/org/opensearch/ml/action/connector/DeleteConnectorTransportAction.java b/plugin/src/main/java/org/opensearch/ml/action/connector/DeleteConnectorTransportAction.java
index cd49b335f4..9ff171d3a9 100644
--- a/plugin/src/main/java/org/opensearch/ml/action/connector/DeleteConnectorTransportAction.java
+++ b/plugin/src/main/java/org/opensearch/ml/action/connector/DeleteConnectorTransportAction.java
@@ -8,7 +8,7 @@
 import static org.opensearch.ml.common.CommonValue.ML_CONNECTOR_INDEX;
 import static org.opensearch.ml.common.CommonValue.ML_MODEL_INDEX;
 
-import org.opensearch.action.ActionListener;
+import org.opensearch.core.action.ActionListener;
 import org.opensearch.action.ActionRequest;
 import org.opensearch.action.DocWriteResponse;
 import org.opensearch.action.delete.DeleteRequest;
diff --git a/plugin/src/main/java/org/opensearch/ml/action/connector/GetConnectorTransportAction.java b/plugin/src/main/java/org/opensearch/ml/action/connector/GetConnectorTransportAction.java
index 59bab2393e..8a1a7368fe 100644
--- a/plugin/src/main/java/org/opensearch/ml/action/connector/GetConnectorTransportAction.java
+++ b/plugin/src/main/java/org/opensearch/ml/action/connector/GetConnectorTransportAction.java
@@ -5,12 +5,12 @@
 
 package org.opensearch.ml.action.connector;
 
-import static org.opensearch.common.xcontent.XContentParserUtils.ensureExpectedToken;
+import static org.opensearch.core.xcontent.XContentParserUtils.ensureExpectedToken;
 import static org.opensearch.ml.common.CommonValue.ML_CONNECTOR_INDEX;
 import static org.opensearch.ml.utils.MLNodeUtils.createXContentParserFromRegistry;
 import static org.opensearch.ml.utils.RestActionUtils.getFetchSourceContext;
 
-import org.opensearch.action.ActionListener;
+import org.opensearch.core.action.ActionListener;
 import org.opensearch.action.ActionRequest;
 import org.opensearch.action.get.GetRequest;
 import org.opensearch.action.support.ActionFilters;
diff --git a/plugin/src/main/java/org/opensearch/ml/action/connector/SearchConnectorTransportAction.java b/plugin/src/main/java/org/opensearch/ml/action/connector/SearchConnectorTransportAction.java
index 6d4f07a7d8..fbf5f84103 100644
--- a/plugin/src/main/java/org/opensearch/ml/action/connector/SearchConnectorTransportAction.java
+++ b/plugin/src/main/java/org/opensearch/ml/action/connector/SearchConnectorTransportAction.java
@@ -11,7 +11,7 @@
 import java.util.Optional;
 import java.util.stream.Collectors;
 
-import org.opensearch.action.ActionListener;
+import org.opensearch.core.action.ActionListener;
 import org.opensearch.action.search.SearchRequest;
 import org.opensearch.action.search.SearchResponse;
 import org.opensearch.action.support.ActionFilters;
diff --git a/plugin/src/main/java/org/opensearch/ml/action/connector/TransportCreateConnectorAction.java b/plugin/src/main/java/org/opensearch/ml/action/connector/TransportCreateConnectorAction.java
index aaa07ebedd..ad07aa5de5 100644
--- a/plugin/src/main/java/org/opensearch/ml/action/connector/TransportCreateConnectorAction.java
+++ b/plugin/src/main/java/org/opensearch/ml/action/connector/TransportCreateConnectorAction.java
@@ -11,7 +11,7 @@
 import java.util.HashSet;
 import java.util.List;
 
-import org.opensearch.action.ActionListener;
+import org.opensearch.core.action.ActionListener;
 import org.opensearch.action.ActionRequest;
 import org.opensearch.action.index.IndexRequest;
 import org.opensearch.action.index.IndexResponse;
@@ -22,11 +22,11 @@
 import org.opensearch.cluster.service.ClusterService;
 import org.opensearch.common.inject.Inject;
 import org.opensearch.common.settings.Settings;
-import org.opensearch.common.util.CollectionUtils;
 import org.opensearch.common.util.concurrent.ThreadContext;
 import org.opensearch.common.xcontent.XContentFactory;
 import org.opensearch.common.xcontent.XContentType;
 import org.opensearch.commons.authuser.User;
+import org.opensearch.core.common.util.CollectionUtils;
 import org.opensearch.core.xcontent.ToXContent;
 import org.opensearch.core.xcontent.XContentBuilder;
 import org.opensearch.ml.common.AccessMode;
@@ -91,7 +91,7 @@ protected void doExecute(Task task, ActionRequest request, ActionListener<MLCrea
         }
         String connectorName = mlCreateConnectorInput.getName();
         try {
-            XContentBuilder builder = XContentFactory.contentBuilder(XContentType.JSON);
+            XContentBuilder builder = XContentFactory.jsonBuilder();
             mlCreateConnectorInput.toXContent(builder, ToXContent.EMPTY_PARAMS);
             Connector connector = Connector.createConnector(builder, mlCreateConnectorInput.getProtocol());
             connector.validateConnectorURL(trustedConnectorEndpointsRegex);
diff --git a/plugin/src/main/java/org/opensearch/ml/helper/ConnectorAccessControlHelper.java b/plugin/src/main/java/org/opensearch/ml/helper/ConnectorAccessControlHelper.java
index fc5f9e95ee..09fd80818f 100644
--- a/plugin/src/main/java/org/opensearch/ml/helper/ConnectorAccessControlHelper.java
+++ b/plugin/src/main/java/org/opensearch/ml/helper/ConnectorAccessControlHelper.java
@@ -7,18 +7,18 @@
 
 package org.opensearch.ml.helper;
 
-import static org.opensearch.common.xcontent.XContentParserUtils.ensureExpectedToken;
+import static org.opensearch.core.xcontent.XContentParserUtils.ensureExpectedToken;
 import static org.opensearch.ml.settings.MLCommonsSettings.ML_COMMONS_CONNECTOR_ACCESS_CONTROL_ENABLED;
 
 import org.apache.lucene.search.join.ScoreMode;
-import org.opensearch.action.ActionListener;
 import org.opensearch.action.get.GetRequest;
 import org.opensearch.client.Client;
 import org.opensearch.cluster.service.ClusterService;
 import org.opensearch.common.settings.Settings;
-import org.opensearch.common.util.CollectionUtils;
 import org.opensearch.common.util.concurrent.ThreadContext;
 import org.opensearch.commons.authuser.User;
+import org.opensearch.core.action.ActionListener;
+import org.opensearch.core.common.util.CollectionUtils;
 import org.opensearch.core.xcontent.NamedXContentRegistry;
 import org.opensearch.core.xcontent.XContentParser;
 import org.opensearch.index.query.BoolQueryBuilder;
diff --git a/plugin/src/main/java/org/opensearch/ml/model/MLModelGroupManager.java b/plugin/src/main/java/org/opensearch/ml/model/MLModelGroupManager.java
index eeb00c1fd0..4f8b46b3cc 100644
--- a/plugin/src/main/java/org/opensearch/ml/model/MLModelGroupManager.java
+++ b/plugin/src/main/java/org/opensearch/ml/model/MLModelGroupManager.java
@@ -10,17 +10,17 @@
 import java.time.Instant;
 import java.util.HashSet;
 
-import org.opensearch.action.ActionListener;
 import org.opensearch.action.index.IndexRequest;
 import org.opensearch.action.search.SearchRequest;
 import org.opensearch.action.support.WriteRequest;
 import org.opensearch.client.Client;
 import org.opensearch.cluster.service.ClusterService;
 import org.opensearch.common.inject.Inject;
-import org.opensearch.common.util.CollectionUtils;
 import org.opensearch.common.util.concurrent.ThreadContext;
 import org.opensearch.common.xcontent.XContentType;
 import org.opensearch.commons.authuser.User;
+import org.opensearch.core.action.ActionListener;
+import org.opensearch.core.common.util.CollectionUtils;
 import org.opensearch.core.xcontent.ToXContent;
 import org.opensearch.core.xcontent.XContentBuilder;
 import org.opensearch.index.IndexNotFoundException;
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 9b0ae00da8..662e635505 100644
--- a/plugin/src/main/java/org/opensearch/ml/rest/RestMLCreateConnectorAction.java
+++ b/plugin/src/main/java/org/opensearch/ml/rest/RestMLCreateConnectorAction.java
@@ -5,7 +5,7 @@
 
 package org.opensearch.ml.rest;
 
-import static org.opensearch.common.xcontent.XContentParserUtils.ensureExpectedToken;
+import static org.opensearch.core.xcontent.XContentParserUtils.ensureExpectedToken;
 import static org.opensearch.ml.plugin.MachineLearningPlugin.ML_BASE_URI;
 
 import java.io.IOException;
diff --git a/plugin/src/test/java/org/opensearch/ml/action/connector/GetConnectorTransportActionTests.java b/plugin/src/test/java/org/opensearch/ml/action/connector/GetConnectorTransportActionTests.java
index 249b46b4e3..ecc7d2bfac 100644
--- a/plugin/src/test/java/org/opensearch/ml/action/connector/GetConnectorTransportActionTests.java
+++ b/plugin/src/test/java/org/opensearch/ml/action/connector/GetConnectorTransportActionTests.java
@@ -19,11 +19,11 @@
 import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
-import org.opensearch.action.ActionListener;
+import org.opensearch.core.action.ActionListener;
 import org.opensearch.action.get.GetResponse;
 import org.opensearch.action.support.ActionFilters;
 import org.opensearch.client.Client;
-import org.opensearch.common.bytes.BytesReference;
+import org.opensearch.core.common.bytes.BytesReference;
 import org.opensearch.common.settings.Settings;
 import org.opensearch.common.util.concurrent.ThreadContext;
 import org.opensearch.common.xcontent.XContentFactory;
diff --git a/plugin/src/test/java/org/opensearch/ml/action/connector/SearchConnectorTransportActionTests.java b/plugin/src/test/java/org/opensearch/ml/action/connector/SearchConnectorTransportActionTests.java
index 2faff41ed5..70c57ddeb5 100644
--- a/plugin/src/test/java/org/opensearch/ml/action/connector/SearchConnectorTransportActionTests.java
+++ b/plugin/src/test/java/org/opensearch/ml/action/connector/SearchConnectorTransportActionTests.java
@@ -14,7 +14,7 @@
 import org.junit.Before;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
-import org.opensearch.action.ActionListener;
+import org.opensearch.core.action.ActionListener;
 import org.opensearch.action.search.SearchRequest;
 import org.opensearch.action.search.SearchResponse;
 import org.opensearch.action.support.ActionFilters;
diff --git a/plugin/src/test/java/org/opensearch/ml/action/connector/TransportCreateConnectorActionTests.java b/plugin/src/test/java/org/opensearch/ml/action/connector/TransportCreateConnectorActionTests.java
index 58d1a3c7d7..4508b22d7b 100644
--- a/plugin/src/test/java/org/opensearch/ml/action/connector/TransportCreateConnectorActionTests.java
+++ b/plugin/src/test/java/org/opensearch/ml/action/connector/TransportCreateConnectorActionTests.java
@@ -23,7 +23,7 @@
 import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
-import org.opensearch.action.ActionListener;
+import org.opensearch.core.action.ActionListener;
 import org.opensearch.action.index.IndexRequest;
 import org.opensearch.action.index.IndexResponse;
 import org.opensearch.action.support.ActionFilters;
diff --git a/plugin/src/test/java/org/opensearch/ml/action/model_group/TransportRegisterModelGroupActionTests.java b/plugin/src/test/java/org/opensearch/ml/action/model_group/TransportRegisterModelGroupActionTests.java
index c5159c99ff..269ac30d95 100644
--- a/plugin/src/test/java/org/opensearch/ml/action/model_group/TransportRegisterModelGroupActionTests.java
+++ b/plugin/src/test/java/org/opensearch/ml/action/model_group/TransportRegisterModelGroupActionTests.java
@@ -24,7 +24,6 @@
 import org.opensearch.cluster.service.ClusterService;
 import org.opensearch.common.settings.Settings;
 import org.opensearch.common.util.concurrent.ThreadContext;
-import org.opensearch.commons.ConfigConstants;
 import org.opensearch.core.action.ActionListener;
 import org.opensearch.ml.common.AccessMode;
 import org.opensearch.ml.common.transport.model_group.MLRegisterModelGroupInput;
diff --git a/plugin/src/test/java/org/opensearch/ml/helper/ConnectorAccessControlHelperTests.java b/plugin/src/test/java/org/opensearch/ml/helper/ConnectorAccessControlHelperTests.java
index 933cd4d825..6a547b9dbe 100644
--- a/plugin/src/test/java/org/opensearch/ml/helper/ConnectorAccessControlHelperTests.java
+++ b/plugin/src/test/java/org/opensearch/ml/helper/ConnectorAccessControlHelperTests.java
@@ -22,11 +22,11 @@
 import org.junit.Before;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
-import org.opensearch.action.ActionListener;
+import org.opensearch.core.action.ActionListener;
 import org.opensearch.action.get.GetResponse;
 import org.opensearch.client.Client;
 import org.opensearch.cluster.service.ClusterService;
-import org.opensearch.common.bytes.BytesReference;
+import org.opensearch.core.common.bytes.BytesReference;
 import org.opensearch.common.settings.ClusterSettings;
 import org.opensearch.common.settings.Settings;
 import org.opensearch.common.util.concurrent.ThreadContext;
diff --git a/plugin/src/test/java/org/opensearch/ml/model/MLModelGroupManagerTests.java b/plugin/src/test/java/org/opensearch/ml/model/MLModelGroupManagerTests.java
index 0bb2c10632..da97dd9cb0 100644
--- a/plugin/src/test/java/org/opensearch/ml/model/MLModelGroupManagerTests.java
+++ b/plugin/src/test/java/org/opensearch/ml/model/MLModelGroupManagerTests.java
@@ -20,7 +20,7 @@
 import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
-import org.opensearch.action.ActionListener;
+import org.opensearch.core.action.ActionListener;
 import org.opensearch.action.index.IndexResponse;
 import org.opensearch.action.support.ActionFilters;
 import org.opensearch.client.Client;
diff --git a/plugin/src/test/java/org/opensearch/ml/rest/RestMLCreateConnectorActionTests.java b/plugin/src/test/java/org/opensearch/ml/rest/RestMLCreateConnectorActionTests.java
index 650bb4a90e..63638e939f 100644
--- a/plugin/src/test/java/org/opensearch/ml/rest/RestMLCreateConnectorActionTests.java
+++ b/plugin/src/test/java/org/opensearch/ml/rest/RestMLCreateConnectorActionTests.java
@@ -22,7 +22,7 @@
 import org.junit.rules.ExpectedException;
 import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
-import org.opensearch.action.ActionListener;
+import org.opensearch.core.action.ActionListener;
 import org.opensearch.client.node.NodeClient;
 import org.opensearch.common.settings.Settings;
 import org.opensearch.core.common.Strings;
diff --git a/plugin/src/test/java/org/opensearch/ml/rest/RestMLDeleteConnectorActionTests.java b/plugin/src/test/java/org/opensearch/ml/rest/RestMLDeleteConnectorActionTests.java
index e32b0cef66..01de5aaf47 100644
--- a/plugin/src/test/java/org/opensearch/ml/rest/RestMLDeleteConnectorActionTests.java
+++ b/plugin/src/test/java/org/opensearch/ml/rest/RestMLDeleteConnectorActionTests.java
@@ -20,7 +20,7 @@
 import org.junit.Before;
 import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
-import org.opensearch.action.ActionListener;
+import org.opensearch.core.action.ActionListener;
 import org.opensearch.action.delete.DeleteResponse;
 import org.opensearch.client.node.NodeClient;
 import org.opensearch.common.settings.Settings;
diff --git a/plugin/src/test/java/org/opensearch/ml/rest/RestMLGetConnectorActionTests.java b/plugin/src/test/java/org/opensearch/ml/rest/RestMLGetConnectorActionTests.java
index 1b27ec718b..99b2a879d9 100644
--- a/plugin/src/test/java/org/opensearch/ml/rest/RestMLGetConnectorActionTests.java
+++ b/plugin/src/test/java/org/opensearch/ml/rest/RestMLGetConnectorActionTests.java
@@ -22,7 +22,7 @@
 import org.junit.rules.ExpectedException;
 import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
-import org.opensearch.action.ActionListener;
+import org.opensearch.core.action.ActionListener;
 import org.opensearch.client.node.NodeClient;
 import org.opensearch.common.settings.Settings;
 import org.opensearch.core.common.Strings;
diff --git a/plugin/src/test/java/org/opensearch/ml/rest/RestMLSearchConnectorActionTests.java b/plugin/src/test/java/org/opensearch/ml/rest/RestMLSearchConnectorActionTests.java
index 74f1349f7c..632afe0569 100644
--- a/plugin/src/test/java/org/opensearch/ml/rest/RestMLSearchConnectorActionTests.java
+++ b/plugin/src/test/java/org/opensearch/ml/rest/RestMLSearchConnectorActionTests.java
@@ -24,7 +24,7 @@
 import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
-import org.opensearch.action.ActionListener;
+import org.opensearch.core.action.ActionListener;
 import org.opensearch.action.search.SearchRequest;
 import org.opensearch.action.search.SearchResponse;
 import org.opensearch.action.search.SearchResponseSections;
@@ -40,7 +40,7 @@
 import org.opensearch.rest.RestHandler;
 import org.opensearch.rest.RestRequest;
 import org.opensearch.rest.RestResponse;
-import org.opensearch.rest.RestStatus;
+import org.opensearch.core.rest.RestStatus;
 import org.opensearch.search.SearchHit;
 import org.opensearch.search.SearchHits;
 import org.opensearch.search.aggregations.InternalAggregations;