diff --git a/homeassistant/components/todo/__init__.py b/homeassistant/components/todo/__init__.py
index a515f0805e7..5febc9561c4 100644
--- a/homeassistant/components/todo/__init__.py
+++ b/homeassistant/components/todo/__init__.py
@@ -33,9 +33,13 @@ from .const import (
     ATTR_DUE,
     ATTR_DUE_DATE,
     ATTR_DUE_DATETIME,
+    ATTR_ITEM,
+    ATTR_RENAME,
+    ATTR_STATUS,
     DOMAIN,
     TodoItemStatus,
     TodoListEntityFeature,
+    TodoServices,
 )
 
 _LOGGER = logging.getLogger(__name__)
@@ -118,11 +122,11 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     websocket_api.async_register_command(hass, websocket_handle_todo_item_move)
 
     component.async_register_entity_service(
-        "add_item",
+        TodoServices.ADD_ITEM,
         vol.All(
             cv.make_entity_service_schema(
                 {
-                    vol.Required("item"): vol.All(cv.string, vol.Length(min=1)),
+                    vol.Required(ATTR_ITEM): vol.All(cv.string, vol.Length(min=1)),
                     **TODO_ITEM_FIELD_SCHEMA,
                 }
             ),
@@ -132,13 +136,13 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
         required_features=[TodoListEntityFeature.CREATE_TODO_ITEM],
     )
     component.async_register_entity_service(
-        "update_item",
+        TodoServices.UPDATE_ITEM,
         vol.All(
             cv.make_entity_service_schema(
                 {
-                    vol.Required("item"): vol.All(cv.string, vol.Length(min=1)),
-                    vol.Optional("rename"): vol.All(cv.string, vol.Length(min=1)),
-                    vol.Optional("status"): vol.In(
+                    vol.Required(ATTR_ITEM): vol.All(cv.string, vol.Length(min=1)),
+                    vol.Optional(ATTR_RENAME): vol.All(cv.string, vol.Length(min=1)),
+                    vol.Optional(ATTR_STATUS): vol.In(
                         {TodoItemStatus.NEEDS_ACTION, TodoItemStatus.COMPLETED},
                     ),
                     **TODO_ITEM_FIELD_SCHEMA,
@@ -146,27 +150,29 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
             ),
             *TODO_ITEM_FIELD_VALIDATIONS,
             cv.has_at_least_one_key(
-                "rename", "status", *[desc.service_field for desc in TODO_ITEM_FIELDS]
+                ATTR_RENAME,
+                ATTR_STATUS,
+                *[desc.service_field for desc in TODO_ITEM_FIELDS],
             ),
         ),
         _async_update_todo_item,
         required_features=[TodoListEntityFeature.UPDATE_TODO_ITEM],
     )
     component.async_register_entity_service(
-        "remove_item",
+        TodoServices.REMOVE_ITEM,
         cv.make_entity_service_schema(
             {
-                vol.Required("item"): vol.All(cv.ensure_list, [cv.string]),
+                vol.Required(ATTR_ITEM): vol.All(cv.ensure_list, [cv.string]),
             }
         ),
         _async_remove_todo_items,
         required_features=[TodoListEntityFeature.DELETE_TODO_ITEM],
     )
     component.async_register_entity_service(
-        "get_items",
+        TodoServices.GET_ITEMS,
         cv.make_entity_service_schema(
             {
-                vol.Optional("status"): vol.All(
+                vol.Optional(ATTR_STATUS): vol.All(
                     cv.ensure_list,
                     [vol.In({TodoItemStatus.NEEDS_ACTION, TodoItemStatus.COMPLETED})],
                 ),
@@ -176,7 +182,7 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
         supports_response=SupportsResponse.ONLY,
     )
     component.async_register_entity_service(
-        "remove_completed_items",
+        TodoServices.REMOVE_COMPLETED_ITEMS,
         {},
         _async_remove_completed_items,
         required_features=[TodoListEntityFeature.DELETE_TODO_ITEM],
diff --git a/homeassistant/components/todo/const.py b/homeassistant/components/todo/const.py
index a605f9fcba2..ee7ef53715d 100644
--- a/homeassistant/components/todo/const.py
+++ b/homeassistant/components/todo/const.py
@@ -8,6 +8,19 @@ ATTR_DUE = "due"
 ATTR_DUE_DATE = "due_date"
 ATTR_DUE_DATETIME = "due_datetime"
 ATTR_DESCRIPTION = "description"
+ATTR_ITEM = "item"
+ATTR_RENAME = "rename"
+ATTR_STATUS = "status"
+
+
+class TodoServices(StrEnum):
+    """Services for the To-do integration."""
+
+    ADD_ITEM = "add_item"
+    UPDATE_ITEM = "update_item"
+    REMOVE_ITEM = "remove_item"
+    GET_ITEMS = "get_items"
+    REMOVE_COMPLETED_ITEMS = "remove_completed_items"
 
 
 class TodoListEntityFeature(IntFlag):