diff --git a/contributing/samples/application_integration_agent/agent.py b/contributing/samples/application_integration_agent/agent.py
index 3104619..9658641 100644
--- a/contributing/samples/application_integration_agent/agent.py
+++ b/contributing/samples/application_integration_agent/agent.py
@@ -33,7 +33,7 @@ jira_toolset = ApplicationIntegrationToolset(
     location=connection_location,
     connection=connection_name,
     entity_operations={"Issues": [], "Projects": []},
-    tool_name="jira_issue_manager",
+    tool_name_prefix="jira_issue_manager",
 )
 
 root_agent = LlmAgent(
diff --git a/src/google/adk/tools/application_integration_tool/application_integration_toolset.py b/src/google/adk/tools/application_integration_tool/application_integration_toolset.py
index 3a8c235..f8b48d1 100644
--- a/src/google/adk/tools/application_integration_tool/application_integration_toolset.py
+++ b/src/google/adk/tools/application_integration_tool/application_integration_toolset.py
@@ -86,7 +86,7 @@ class ApplicationIntegrationToolset:
       actions: Optional[str] = None,
       # Optional parameter for the toolset. This is prepended to the generated
       # tool/python function name.
-      tool_name: Optional[str] = "",
+      tool_name_prefix: Optional[str] = "",
       # Optional parameter for the toolset. This is appended to the generated
       # tool/python function description.
       tool_instructions: Optional[str] = "",
@@ -103,7 +103,7 @@ class ApplicationIntegrationToolset:
         connection: The connection name.
         entity_operations: The entity operations supported by the connection.
         actions: The actions supported by the connection.
-        tool_name: The name of the tool.
+        tool_name_prefix: The name prefix of the generated tools.
         tool_instructions: The instructions for the tool.
         service_account_json: The service account configuration as a dictionary.
           Required if not using default service credential. Used for fetching
@@ -122,15 +122,15 @@ class ApplicationIntegrationToolset:
     """
     self.project = project
     self.location = location
-    self.integration = integration
-    self.triggers = triggers
-    self.connection = connection
-    self.entity_operations = entity_operations
-    self.actions = actions
-    self.tool_name = tool_name
-    self.tool_instructions = tool_instructions
-    self.service_account_json = service_account_json
-    self._tool_filter = tool_filter
+    self._integration = integration
+    self._triggers = triggers
+    self._connection = connection
+    self._entity_operations = entity_operations
+    self._actions = actions
+    self._tool_name_prefix = tool_name_prefix
+    self._tool_instructions = tool_instructions
+    self._service_account_json = service_account_json
+    self.tool_filter = tool_filter
 
     integration_client = IntegrationClient(
         project,
@@ -151,7 +151,7 @@ class ApplicationIntegrationToolset:
       )
       connection_details = connections_client.get_connection_details()
       spec = integration_client.get_openapi_spec_for_connection(
-          tool_name,
+          tool_name_prefix,
           tool_instructions,
       )
     else:
@@ -159,15 +159,15 @@ class ApplicationIntegrationToolset:
           "Invalid request, Either integration or (connection and"
           " (entity_operations or actions)) should be provided."
       )
-    self.openapi_toolset = None
-    self.tool = None
+    self._openapi_toolset = None
+    self._tool = None
     self._parse_spec_to_toolset(spec, connection_details)
 
   def _parse_spec_to_toolset(self, spec_dict, connection_details):
     """Parses the spec dict to OpenAPI toolset."""
-    if self.service_account_json:
+    if self._service_account_json:
       sa_credential = ServiceAccountCredential.model_validate_json(
-          self.service_account_json
+          self._service_account_json
       )
       service_account = ServiceAccount(
           service_account_credential=sa_credential,
@@ -186,12 +186,12 @@ class ApplicationIntegrationToolset:
       )
       auth_scheme = HTTPBearer(bearerFormat="JWT")
 
-    if self.integration:
-      self.openapi_toolset = OpenAPIToolset(
+    if self._integration:
+      self._openapi_toolset = OpenAPIToolset(
           spec_dict=spec_dict,
           auth_credential=auth_credential,
           auth_scheme=auth_scheme,
-          tool_filter=self._tool_filter,
+          tool_filter=self.tool_filter,
       )
       return
 
@@ -210,7 +210,7 @@ class ApplicationIntegrationToolset:
         rest_api_tool.configure_auth_scheme(auth_scheme)
       if auth_credential:
         rest_api_tool.configure_auth_credential(auth_credential)
-      self.tool = IntegrationConnectorTool(
+      self._tool = IntegrationConnectorTool(
           name=rest_api_tool.name,
           description=rest_api_tool.description,
           connection_name=connection_details["name"],
@@ -224,9 +224,11 @@ class ApplicationIntegrationToolset:
 
   @override
   async def get_tools(self) -> List[RestApiTool]:
-    return [self.tool] if self.tool else await self.openapi_toolset.get_tools()
+    return (
+        [self._tool] if self._tool else await self._openapi_toolset.get_tools()
+    )
 
   @override
   async def close(self) -> None:
-    if self.openapi_toolset:
-      await self.openapi_toolset.close()
+    if self._openapi_toolset:
+      await self._openapi_toolset.close()
diff --git a/src/google/adk/tools/application_integration_tool/integration_connector_tool.py b/src/google/adk/tools/application_integration_tool/integration_connector_tool.py
index 2513da5..1a112a4 100644
--- a/src/google/adk/tools/application_integration_tool/integration_connector_tool.py
+++ b/src/google/adk/tools/application_integration_tool/integration_connector_tool.py
@@ -101,18 +101,18 @@ class IntegrationConnectorTool(BaseTool):
         name=name,
         description=description,
     )
-    self.connection_name = connection_name
-    self.connection_host = connection_host
-    self.connection_service_name = connection_service_name
-    self.entity = entity
-    self.operation = operation
-    self.action = action
-    self.rest_api_tool = rest_api_tool
+    self._connection_name = connection_name
+    self._connection_host = connection_host
+    self._connection_service_name = connection_service_name
+    self._entity = entity
+    self._operation = operation
+    self._action = action
+    self._rest_api_tool = rest_api_tool
 
   @override
   def _get_declaration(self) -> FunctionDeclaration:
     """Returns the function declaration in the Gemini Schema format."""
-    schema_dict = self.rest_api_tool._operation_parser.get_json_schema()
+    schema_dict = self._rest_api_tool._operation_parser.get_json_schema()
     for field in self.EXCLUDE_FIELDS:
       if field in schema_dict['properties']:
         del schema_dict['properties'][field]
@@ -130,30 +130,30 @@ class IntegrationConnectorTool(BaseTool):
   async def run_async(
       self, *, args: dict[str, Any], tool_context: Optional[ToolContext]
   ) -> Dict[str, Any]:
-    args['connection_name'] = self.connection_name
-    args['service_name'] = self.connection_service_name
-    args['host'] = self.connection_host
-    args['entity'] = self.entity
-    args['operation'] = self.operation
-    args['action'] = self.action
+    args['connection_name'] = self._connection_name
+    args['service_name'] = self._connection_service_name
+    args['host'] = self._connection_host
+    args['entity'] = self._entity
+    args['operation'] = self._operation
+    args['action'] = self._action
     logger.info('Running tool: %s with args: %s', self.name, args)
-    return self.rest_api_tool.call(args=args, tool_context=tool_context)
+    return self._rest_api_tool.call(args=args, tool_context=tool_context)
 
   def __str__(self):
     return (
         f'ApplicationIntegrationTool(name="{self.name}",'
         f' description="{self.description}",'
-        f' connection_name="{self.connection_name}", entity="{self.entity}",'
-        f' operation="{self.operation}", action="{self.action}")'
+        f' connection_name="{self._connection_name}", entity="{self._entity}",'
+        f' operation="{self._operation}", action="{self._action}")'
     )
 
   def __repr__(self):
     return (
         f'ApplicationIntegrationTool(name="{self.name}",'
         f' description="{self.description}",'
-        f' connection_name="{self.connection_name}",'
-        f' connection_host="{self.connection_host}",'
-        f' connection_service_name="{self.connection_service_name}",'
-        f' entity="{self.entity}", operation="{self.operation}",'
-        f' action="{self.action}", rest_api_tool={repr(self.rest_api_tool)})'
+        f' connection_name="{self._connection_name}",'
+        f' connection_host="{self._connection_host}",'
+        f' connection_service_name="{self._connection_service_name}",'
+        f' entity="{self._entity}", operation="{self._operation}",'
+        f' action="{self._action}", rest_api_tool={repr(self._rest_api_tool)})'
     )
diff --git a/tests/unittests/tools/application_integration_tool/test_application_integration_toolset.py b/tests/unittests/tools/application_integration_tool/test_application_integration_toolset.py
index b2f57c2..98fd1a7 100644
--- a/tests/unittests/tools/application_integration_tool/test_application_integration_toolset.py
+++ b/tests/unittests/tools/application_integration_tool/test_application_integration_toolset.py
@@ -262,7 +262,7 @@ async def test_initialization_with_connection_and_entity_operations(
       location,
       connection=connection_name,
       entity_operations=entity_operations_list,
-      tool_name=tool_name,
+      tool_name_prefix=tool_name,
       tool_instructions=tool_instructions,
   )
   mock_integration_client.assert_called_once_with(
@@ -289,8 +289,8 @@ async def test_initialization_with_connection_and_entity_operations(
   assert len(tools) == 1
   assert tools[0].name == "list_issues"
   assert isinstance(tools[0], IntegrationConnectorTool)
-  assert tools[0].entity == "Issues"
-  assert tools[0].operation == "LIST_ENTITIES"
+  assert tools[0]._entity == "Issues"
+  assert tools[0]._operation == "LIST_ENTITIES"
 
 
 @pytest.mark.asyncio
@@ -314,7 +314,7 @@ async def test_initialization_with_connection_and_actions(
       location,
       connection=connection_name,
       actions=actions_list,
-      tool_name=tool_name,
+      tool_name_prefix=tool_name,
       tool_instructions=tool_instructions,
   )
   mock_integration_client.assert_called_once_with(
@@ -332,8 +332,8 @@ async def test_initialization_with_connection_and_actions(
   assert len(tools) == 1
   assert tools[0].name == "list_issues_operation"
   assert isinstance(tools[0], IntegrationConnectorTool)
-  assert tools[0].action == "CustomAction"
-  assert tools[0].operation == "EXECUTE_ACTION"
+  assert tools[0]._action == "CustomAction"
+  assert tools[0]._operation == "EXECUTE_ACTION"
 
 
 def test_initialization_without_required_params(project, location):
@@ -467,7 +467,7 @@ def test_initialization_with_connection_details(
       location,
       connection=connection_name,
       entity_operations=entity_operations_list,
-      tool_name=tool_name,
+      tool_name_prefix=tool_name,
       tool_instructions=tool_instructions,
   )
   mock_integration_client.return_value.get_openapi_spec_for_connection.assert_called_once_with(