diff --git a/server/src/main/java/org/opensearch/action/main/MainResponse.java b/server/src/main/java/org/opensearch/action/main/MainResponse.java
index 349ee1f1e9f..467f33c1c3b 100644
--- a/server/src/main/java/org/opensearch/action/main/MainResponse.java
+++ b/server/src/main/java/org/opensearch/action/main/MainResponse.java
@@ -56,6 +56,7 @@ public class MainResponse extends ActionResponse implements ToXContentObject {
     private String clusterUuid;
     private Build build;
     private String versionNumber;
+    public static final String TAGLINE = "The OpenSearch Project: https://opensearch.org/";
 
     MainResponse() {}
 
@@ -149,6 +150,7 @@ public class MainResponse extends ActionResponse implements ToXContentObject {
             .field("minimum_wire_compatibility_version", version.minimumCompatibilityVersion().toString())
             .field("minimum_index_compatibility_version", version.minimumIndexCompatibilityVersion().toString())
             .endObject();
+        builder.field("tagline", TAGLINE);
         builder.endObject();
         return builder;
     }
@@ -160,6 +162,7 @@ public class MainResponse extends ActionResponse implements ToXContentObject {
         PARSER.declareString((response, value) -> response.nodeName = value, new ParseField("name"));
         PARSER.declareString((response, value) -> response.clusterName = new ClusterName(value), new ParseField("cluster_name"));
         PARSER.declareString((response, value) -> response.clusterUuid = value, new ParseField("cluster_uuid"));
+        PARSER.declareString((response, value) -> {}, new ParseField("tagline"));
         PARSER.declareObject((response, value) -> {
             final String buildType = (String) value.get("build_type");
             response.build =
diff --git a/server/src/test/java/org/opensearch/action/main/MainResponseTests.java b/server/src/test/java/org/opensearch/action/main/MainResponseTests.java
index 0163d21971e..550cf43799d 100644
--- a/server/src/test/java/org/opensearch/action/main/MainResponseTests.java
+++ b/server/src/test/java/org/opensearch/action/main/MainResponseTests.java
@@ -48,6 +48,8 @@ import org.opensearch.test.VersionUtils;
 import java.io.IOException;
 import java.util.Date;
 
+import static org.opensearch.action.main.MainResponse.TAGLINE;
+
 public class MainResponseTests extends AbstractSerializingTestCase<MainResponse> {
 
     @Override
@@ -98,7 +100,8 @@ public class MainResponseTests extends AbstractSerializingTestCase<MainResponse>
                     + "\"build_snapshot\":" + current.isSnapshot() + ","
                     + "\"lucene_version\":\"" + version.luceneVersion.toString() + "\","
                     + "\"minimum_wire_compatibility_version\":\"" + version.minimumCompatibilityVersion().toString() + "\","
-                    + "\"minimum_index_compatibility_version\":\"" + version.minimumIndexCompatibilityVersion().toString() + "\"}"
+                    + "\"minimum_index_compatibility_version\":\"" + version.minimumIndexCompatibilityVersion().toString() + "\"},"
+                + "\"tagline\":\"" + TAGLINE + "\""
           + "}", Strings.toString(builder));
     }