diff --git a/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/AgentTool.java b/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/AgentTool.java
index 57279f771d..e64349a187 100644
--- a/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/AgentTool.java
+++ b/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/AgentTool.java
@@ -35,8 +35,9 @@ public class AgentTool implements Tool {
     @Setter @Getter
     private String alias;
 
+    private static String DEFAULT_DESCRIPTION = "Use this tool to run any agent.";
     @Getter @Setter
-    private String description = "Use this tool to run any agent.";
+    private String description = DEFAULT_DESCRIPTION;
 
     public AgentTool(Client client, String agentId) {
         this.client = client;
@@ -92,5 +93,10 @@ public void init(Client client) {
         public AgentTool create(Map<String, Object> map) {
             return new AgentTool(client, (String)map.get("agent_id"));
         }
+
+        @Override
+        public String getDefaultDescription() {
+            return DEFAULT_DESCRIPTION;
+        }
     }
 }
\ No newline at end of file
diff --git a/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/CatIndexTool.java b/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/CatIndexTool.java
index 4809fa325e..0f395c4081 100644
--- a/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/CatIndexTool.java
+++ b/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/CatIndexTool.java
@@ -46,8 +46,9 @@ public class CatIndexTool implements Tool {
 
     @Setter @Getter
     private String alias;
+    private static String DEFAULT_DESCRIPTION = "User this tool to get index information.";
     @Getter @Setter
-    private String description = "User this tool to get index information.";
+    private String description = DEFAULT_DESCRIPTION;
     private Client client;
     private String modelId;
     @Setter
@@ -232,5 +233,10 @@ public void init(Client client, ClusterService clusterService) {
         public CatIndexTool create(Map<String, Object> map) {
             return new CatIndexTool(client, clusterService, (String)map.get("model_id"));
         }
+
+        @Override
+        public String getDefaultDescription() {
+            return DEFAULT_DESCRIPTION;
+        }
     }
 }
\ No newline at end of file
diff --git a/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/MLModelTool.java b/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/MLModelTool.java
index 22ea2cdeaf..8ae1650ff4 100644
--- a/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/MLModelTool.java
+++ b/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/MLModelTool.java
@@ -36,8 +36,9 @@ public class MLModelTool implements Tool {
 
     @Setter @Getter
     private String alias;
+    private static String DEFAULT_DESCRIPTION = "User this tool to run any model.";
     @Getter @Setter
-    private String description = "User this tool to run any model.";
+    private String description = DEFAULT_DESCRIPTION;
     private Client client;
     private String modelId;
     @Setter
@@ -116,5 +117,10 @@ public void init(Client client) {
         public MLModelTool create(Map<String, Object> map) {
             return new MLModelTool(client, (String)map.get("model_id"));
         }
+
+        @Override
+        public String getDefaultDescription() {
+            return DEFAULT_DESCRIPTION;
+        }
     }
 }
diff --git a/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/MathTool.java b/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/MathTool.java
index 3389505958..65c79d3e0a 100644
--- a/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/MathTool.java
+++ b/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/MathTool.java
@@ -29,8 +29,9 @@ public class MathTool implements Tool {
     @Setter
     private ScriptService scriptService;
 
+    private static String DEFAULT_DESCRIPTION = "Use this tool to calculate any math problem.";
     @Getter @Setter
-    private String description = "Use this tool to calculate any math problem.";
+    private String description = DEFAULT_DESCRIPTION;
 
     public MathTool(ScriptService scriptService) {
         this.scriptService = scriptService;
@@ -95,5 +96,10 @@ public void init(ScriptService scriptService) {
         public MathTool create(Map<String, Object> map) {
             return new MathTool(scriptService);
         }
+
+        @Override
+        public String getDefaultDescription() {
+            return DEFAULT_DESCRIPTION;
+        }
     }
 }
\ No newline at end of file
diff --git a/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/PainlessScriptTool.java b/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/PainlessScriptTool.java
index 2e2eabd62e..f90e3906c5 100644
--- a/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/PainlessScriptTool.java
+++ b/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/PainlessScriptTool.java
@@ -30,8 +30,9 @@ public class PainlessScriptTool implements Tool {
 
     @Setter @Getter
     private String alias;
+    private static String DEFAULT_DESCRIPTION = "User this tool to get index information.";
     @Getter @Setter
-    private String description = "User this tool to get index information.";
+    private String description = DEFAULT_DESCRIPTION;
     private Client client;
     private String modelId;
     @Setter
@@ -104,5 +105,10 @@ public void init(Client client, ScriptService scriptService) {
         public PainlessScriptTool create(Map<String, Object> map) {
             return new PainlessScriptTool(client, scriptService);
         }
+
+        @Override
+        public String getDefaultDescription() {
+            return DEFAULT_DESCRIPTION;
+        }
     }
 }
\ No newline at end of file
diff --git a/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/VectorDBTool.java b/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/VectorDBTool.java
index ecfd80f80d..fe41eaabed 100644
--- a/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/VectorDBTool.java
+++ b/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/VectorDBTool.java
@@ -44,8 +44,9 @@ public class VectorDBTool implements Tool {
     public static final String NAME = "VectorDBTool";
     @Setter @Getter
     private String alias;
+    private static String DEFAULT_DESCRIPTION = "Useful for when need to search my data in OpenSearch index.";
     @Getter @Setter
-    private String description = "Useful for when need to search my data in OpenSearch index.";
+    private String description = DEFAULT_DESCRIPTION;
 
     private Client client;
     private NamedXContentRegistry xContentRegistry;
@@ -229,6 +230,11 @@ public VectorDBTool create(Map<String, Object> params) {
                     .docSize(docSize)
                     .build();
         }
+
+        @Override
+        public String getDefaultDescription() {
+            return DEFAULT_DESCRIPTION;
+        }
     }
 
 }
\ No newline at end of file
diff --git a/plugin/src/main/java/org/opensearch/ml/plugin/MachineLearningPlugin.java b/plugin/src/main/java/org/opensearch/ml/plugin/MachineLearningPlugin.java
index 7b7a765c56..463cd8fe69 100644
--- a/plugin/src/main/java/org/opensearch/ml/plugin/MachineLearningPlugin.java
+++ b/plugin/src/main/java/org/opensearch/ml/plugin/MachineLearningPlugin.java
@@ -606,8 +606,8 @@ public List<RestHandler> getRestHandlers(
         RestMemoryGetInteractionsAction restListInteractionsAction = new RestMemoryGetInteractionsAction();
         RestMemoryDeleteConversationAction restDeleteConversationAction = new RestMemoryDeleteConversationAction();
         RestMLUpdateConnectorAction restMLUpdateConnectorAction = new RestMLUpdateConnectorAction(mlFeatureEnabledSetting);
-        RestMLListToolsAction restMLListToolsAction = new RestMLListToolsAction(externalTools);
-        RestMLGetToolAction restMLGetToolAction = new RestMLGetToolAction(externalTools);
+        RestMLListToolsAction restMLListToolsAction = new RestMLListToolsAction(toolFactories);
+        RestMLGetToolAction restMLGetToolAction = new RestMLGetToolAction(toolFactories);
         return ImmutableList
             .of(
                 restMLStatsAction,
@@ -817,7 +817,7 @@ public void loadExtensions(ExtensionLoader loader) {
                 }
             }
 
-            List<Tool.Factory> toolFactories = extension.getToolFactories();
+            List<Tool.Factory<? extends Tool>> toolFactories = extension.getToolFactories();
             for (Tool.Factory toolFactory : toolFactories) {
                 ToolAnnotation toolAnnotation = toolFactory.getClass().getDeclaringClass().getAnnotation(ToolAnnotation.class);
                 if (toolAnnotation == null) {
diff --git a/plugin/src/main/java/org/opensearch/ml/rest/RestMLGetToolAction.java b/plugin/src/main/java/org/opensearch/ml/rest/RestMLGetToolAction.java
index 01f1ba510b..e0ab0bc820 100644
--- a/plugin/src/main/java/org/opensearch/ml/rest/RestMLGetToolAction.java
+++ b/plugin/src/main/java/org/opensearch/ml/rest/RestMLGetToolAction.java
@@ -27,10 +27,10 @@ public class RestMLGetToolAction extends BaseRestHandler {
 
     private static final String ML_GET_TOOL_ACTION = "ml_get_tool_action";
 
-    private Map<String, Tool> externalTools;
+    private Map<String, Tool.Factory> toolFactories;
 
-    public RestMLGetToolAction(Map<String, Tool> externalTools) {
-        this.externalTools = externalTools;
+    public RestMLGetToolAction(Map<String, Tool.Factory> toolFactories) {
+        this.toolFactories = toolFactories;
     }
 
     @Override
@@ -41,7 +41,7 @@ public String getName() {
     @Override
     public List<Route> routes() {
         return ImmutableList
-            .of(new Route(RestRequest.Method.GET, String.format(Locale.ROOT, "%s/tool/{%s}", ML_BASE_URI, PARAMETER_TOOL_NAME)));
+            .of(new Route(RestRequest.Method.GET, String.format(Locale.ROOT, "%s/tools/{%s}", ML_BASE_URI, PARAMETER_TOOL_NAME)));
     }
 
     /**
@@ -60,10 +60,8 @@ public List<Route> routes() {
     @Override
     protected RestChannelConsumer prepareRequest(RestRequest request, NodeClient client) throws IOException {
         List<ToolMetadata> toolList = new ArrayList<>();
-        externalTools
-            .forEach(
-                (key, value) -> toolList.add(ToolMetadata.builder().name(value.getName()).description(value.getDescription()).build())
-            );
+        toolFactories
+            .forEach((key, value) -> toolList.add(ToolMetadata.builder().name(key).description(value.getDefaultDescription()).build()));
         String toolName = getParameterId(request, PARAMETER_TOOL_NAME);
         MLToolGetRequest mlToolGetRequest = MLToolGetRequest.builder().toolName(toolName).externalTools(toolList).build();
         return channel -> client.execute(MLGetToolAction.INSTANCE, mlToolGetRequest, new RestToXContentListener<>(channel));
diff --git a/plugin/src/main/java/org/opensearch/ml/rest/RestMLListToolsAction.java b/plugin/src/main/java/org/opensearch/ml/rest/RestMLListToolsAction.java
index 7c240d79d8..db67296978 100644
--- a/plugin/src/main/java/org/opensearch/ml/rest/RestMLListToolsAction.java
+++ b/plugin/src/main/java/org/opensearch/ml/rest/RestMLListToolsAction.java
@@ -26,10 +26,10 @@
 public class RestMLListToolsAction extends BaseRestHandler {
     private static final String ML_GET_MODEL_ACTION = "ml_get_tools_action";
 
-    private Map<String, Tool> externalTools;
+    private Map<String, Tool.Factory> toolFactories;
 
-    public RestMLListToolsAction(Map<String, Tool> externalTools) {
-        this.externalTools = externalTools;
+    public RestMLListToolsAction(Map<String, Tool.Factory> toolFactories) {
+        this.toolFactories = toolFactories;
     }
 
     @Override
@@ -58,10 +58,8 @@ public List<Route> routes() {
     @Override
     protected RestChannelConsumer prepareRequest(RestRequest request, NodeClient client) throws IOException {
         List<ToolMetadata> toolList = new ArrayList<>();
-        externalTools
-            .forEach(
-                (key, value) -> toolList.add(ToolMetadata.builder().name(value.getName()).description(value.getDescription()).build())
-            );
+        toolFactories
+            .forEach((key, value) -> toolList.add(ToolMetadata.builder().name(key).description(value.getDefaultDescription()).build()));
         MLToolsListRequest mlToolsGetRequest = MLToolsListRequest.builder().externalTools(toolList).build();
         return channel -> client.execute(MLListToolsAction.INSTANCE, mlToolsGetRequest, new RestToXContentListener<>(channel));
     }
diff --git a/spi/src/main/java/org/opensearch/ml/common/spi/tools/Tool.java b/spi/src/main/java/org/opensearch/ml/common/spi/tools/Tool.java
index 354749f395..05fb90b804 100644
--- a/spi/src/main/java/org/opensearch/ml/common/spi/tools/Tool.java
+++ b/spi/src/main/java/org/opensearch/ml/common/spi/tools/Tool.java
@@ -92,5 +92,6 @@ default boolean end(String input, Map<String, String> toolParameters) {
      */
     interface Factory<T extends Tool> {
         T create(Map<String, Object> params);
+        String getDefaultDescription();
     }
 }