diff --git a/apps/yms/gui/src/main/java/org/onosproject/yms/gui/YangModelMessageHandler.java b/apps/yms/gui/src/main/java/org/onosproject/yms/gui/YangModelMessageHandler.java
new file mode 100644
index 0000000..e24c06f
--- /dev/null
+++ b/apps/yms/gui/src/main/java/org/onosproject/yms/gui/YangModelMessageHandler.java
@@ -0,0 +1,145 @@
+/*
+ * Copyright 2017-present Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.yms.gui;
+
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.google.common.collect.ImmutableSet;
+import org.onlab.osgi.ServiceDirectory;
+import org.onosproject.ui.RequestHandler;
+import org.onosproject.ui.UiConnection;
+import org.onosproject.ui.UiMessageHandler;
+import org.onosproject.ui.table.TableModel;
+import org.onosproject.ui.table.TableRequestHandler;
+import org.onosproject.yms.ymsm.YmsService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.Collection;
+
+/**
+ * ONOS UI Yang Models message handler.
+ */
+public class YangModelMessageHandler extends UiMessageHandler {
+
+    private static final String TABLE_REQ = "yangModelDataRequest";
+    private static final String TABLE_RESP = "yangModelDataResponse";
+    private static final String MODELS = "models";
+
+    private static final String DETAILS_REQ = "yangModelDetailsRequest";
+    private static final String DETAILS_RESP = "yangModelDetailsResponse";
+    private static final String DETAILS = "details";
+
+    // Table Column IDs
+    private static final String ID = "id";
+    private static final String TYPE = "type";
+    // TODO: fill out table columns as needed
+
+    private static final String[] COL_IDS = {
+            ID, TYPE
+    };
+
+    private final Logger log = LoggerFactory.getLogger(getClass());
+
+    private YmsService ymsService;
+    // TODO: fill out other fields as necessary
+
+
+    // ===============-=-=-=-=-=-==================-=-=-=-=-=-=-===========
+
+    @Override
+    public void init(UiConnection connection, ServiceDirectory directory) {
+        super.init(connection, directory);
+        ymsService = directory.get(YmsService.class);
+        // TODO: addListeners(); ???
+    }
+
+    @Override
+    public void destroy() {
+        // TODO: removeListeners(); ???
+        super.destroy();
+        // NOTE: if no listeners are required, this method can be removed
+    }
+
+    @Override
+    protected Collection<RequestHandler> createRequestHandlers() {
+        return ImmutableSet.of(
+                new TableDataHandler()
+        );
+    }
+
+
+    // Handler for table requests
+    private final class TableDataHandler extends TableRequestHandler {
+        private static final String NO_ROWS_MESSAGE = "No YANG Models found";
+
+        private TableDataHandler() {
+            super(TABLE_REQ, TABLE_RESP, MODELS);
+        }
+
+        @Override
+        protected String[] getColumnIds() {
+            return COL_IDS;
+        }
+
+        @Override
+        protected String noRowsMessage(ObjectNode payload) {
+            return NO_ROWS_MESSAGE;
+        }
+
+        @Override
+        protected void populateTable(TableModel tm, ObjectNode payload) {
+            // TODO: use ymsService(?) to iterate over list of models...
+            for (int k = 0; k < 5; k++) {
+                populateRow(tm.addRow(), k);
+            }
+        }
+
+        // TODO: obviously, this should be adapted to arrange YANG model data
+        //       into the appropriate table columns
+        private void populateRow(TableModel.Row row, int k) {
+            row.cell(ID, k)
+                    .cell(TYPE, "ymtype-" + k);
+        }
+    }
+
+
+    // handler for selected model detail requests (selected table row)
+    private final class DetailRequestHandler extends RequestHandler {
+        private DetailRequestHandler() {
+            super(DETAILS_REQ);
+        }
+
+        @Override
+        public void process(ObjectNode payload) {
+            String id = string(payload, ID);
+
+            // TODO: retrieve the appropriate model from ymsService and create
+            //       a detail record to send back to the client.
+
+            ObjectNode data = objectNode();
+
+            data.put(ID, id);
+            data.put(TYPE, "some-type");
+            data.put("todo", "fill out with appropriate date attributes");
+
+            ObjectNode rootNode = objectNode();
+            rootNode.set(DETAILS, data);
+
+            sendMessage(DETAILS_RESP, rootNode);
+        }
+    }
+}