diff --git a/homeassistant/components/backup/agent.py b/homeassistant/components/backup/agent.py
index cb03327e941..fe9eb9ea699 100644
--- a/homeassistant/components/backup/agent.py
+++ b/homeassistant/components/backup/agent.py
@@ -30,11 +30,12 @@ class BackupAgent(abc.ABC):
 
     domain: str
     name: str
+    unique_id: str
 
     @cached_property
     def agent_id(self) -> str:
         """Return the agent_id."""
-        return f"{self.domain}.{self.name}"
+        return f"{self.domain}.{self.unique_id}"
 
     @abc.abstractmethod
     async def async_download_backup(
diff --git a/homeassistant/components/backup/backup.py b/homeassistant/components/backup/backup.py
index ef4924161c2..3f60bd0b88e 100644
--- a/homeassistant/components/backup/backup.py
+++ b/homeassistant/components/backup/backup.py
@@ -32,6 +32,7 @@ class CoreLocalBackupAgent(LocalBackupAgent):
 
     domain = DOMAIN
     name = "local"
+    unique_id = "local"
 
     def __init__(self, hass: HomeAssistant) -> None:
         """Initialize the backup agent."""
diff --git a/homeassistant/components/backup/websocket.py b/homeassistant/components/backup/websocket.py
index 70fc568c05c..74f56102670 100644
--- a/homeassistant/components/backup/websocket.py
+++ b/homeassistant/components/backup/websocket.py
@@ -306,7 +306,10 @@ async def backup_agents_info(
     connection.send_result(
         msg["id"],
         {
-            "agents": [{"agent_id": agent_id} for agent_id in manager.backup_agents],
+            "agents": [
+                {"agent_id": agent.agent_id, "name": agent.name}
+                for agent in manager.backup_agents.values()
+            ],
         },
     )
 
diff --git a/homeassistant/components/cloud/backup.py b/homeassistant/components/cloud/backup.py
index 153d0741770..d42e846259c 100644
--- a/homeassistant/components/cloud/backup.py
+++ b/homeassistant/components/cloud/backup.py
@@ -82,8 +82,7 @@ def async_register_backup_agents_listener(
 class CloudBackupAgent(BackupAgent):
     """Cloud backup agent."""
 
-    domain = DOMAIN
-    name = DOMAIN
+    domain = name = unique_id = DOMAIN
 
     def __init__(self, hass: HomeAssistant, cloud: Cloud[CloudClient]) -> None:
         """Initialize the cloud backup sync agent."""
diff --git a/homeassistant/components/hassio/backup.py b/homeassistant/components/hassio/backup.py
index d49fafb886f..98ad2ad20e3 100644
--- a/homeassistant/components/hassio/backup.py
+++ b/homeassistant/components/hassio/backup.py
@@ -133,7 +133,7 @@ class SupervisorBackupAgent(BackupAgent):
         self._hass = hass
         self._backup_dir = Path("/backups")
         self._client = get_supervisor_client(hass)
-        self.name = name
+        self.name = self.unique_id = name
         self.location = location
 
     async def async_download_backup(
diff --git a/homeassistant/components/kitchen_sink/backup.py b/homeassistant/components/kitchen_sink/backup.py
index c4a045aeefc..44ac0456105 100644
--- a/homeassistant/components/kitchen_sink/backup.py
+++ b/homeassistant/components/kitchen_sink/backup.py
@@ -51,7 +51,7 @@ class KitchenSinkBackupAgent(BackupAgent):
     def __init__(self, name: str) -> None:
         """Initialize the kitchen sink backup sync agent."""
         super().__init__()
-        self.name = name
+        self.name = self.unique_id = name
         self._uploads = [
             AgentBackup(
                 addons=[AddonInfo(name="Test", slug="test", version="1.0.0")],
diff --git a/homeassistant/components/synology_dsm/backup.py b/homeassistant/components/synology_dsm/backup.py
index eed6af758ba..62a1b97b717 100644
--- a/homeassistant/components/synology_dsm/backup.py
+++ b/homeassistant/components/synology_dsm/backup.py
@@ -39,7 +39,7 @@ async def async_get_backup_agents(
         return []
     syno_datas: dict[str, SynologyDSMData] = hass.data[DOMAIN]
     return [
-        SynologyDSMBackupAgent(hass, entry)
+        SynologyDSMBackupAgent(hass, entry, entry.unique_id)
         for entry in entries
         if entry.unique_id is not None
         and (syno_data := syno_datas.get(entry.unique_id))
@@ -76,11 +76,12 @@ class SynologyDSMBackupAgent(BackupAgent):
 
     domain = DOMAIN
 
-    def __init__(self, hass: HomeAssistant, entry: ConfigEntry) -> None:
+    def __init__(self, hass: HomeAssistant, entry: ConfigEntry, unique_id: str) -> None:
         """Initialize the Synology DSM backup agent."""
         super().__init__()
         LOGGER.debug("Initializing Synology DSM backup agent for %s", entry.unique_id)
         self.name = entry.title
+        self.unique_id = unique_id
         self.path = (
             f"{entry.options[CONF_BACKUP_SHARE]}/{entry.options[CONF_BACKUP_PATH]}"
         )
diff --git a/tests/components/backup/common.py b/tests/components/backup/common.py
index 4f456cc6d72..97236ee995d 100644
--- a/tests/components/backup/common.py
+++ b/tests/components/backup/common.py
@@ -64,6 +64,7 @@ class BackupAgentTest(BackupAgent):
     def __init__(self, name: str, backups: list[AgentBackup] | None = None) -> None:
         """Initialize the backup agent."""
         self.name = name
+        self.unique_id = name
         if backups is None:
             backups = [
                 AgentBackup(
diff --git a/tests/components/backup/snapshots/test_backup.ambr b/tests/components/backup/snapshots/test_backup.ambr
index f91473e3b70..1a6774e7a95 100644
--- a/tests/components/backup/snapshots/test_backup.ambr
+++ b/tests/components/backup/snapshots/test_backup.ambr
@@ -39,6 +39,7 @@
       'agents': list([
         dict({
           'agent_id': 'backup.local',
+          'name': 'local',
         }),
       ]),
     }),
@@ -97,6 +98,7 @@
       'agents': list([
         dict({
           'agent_id': 'backup.local',
+          'name': 'local',
         }),
       ]),
     }),
@@ -128,6 +130,7 @@
       'agents': list([
         dict({
           'agent_id': 'backup.local',
+          'name': 'local',
         }),
       ]),
     }),
@@ -159,6 +162,7 @@
       'agents': list([
         dict({
           'agent_id': 'backup.local',
+          'name': 'local',
         }),
       ]),
     }),
@@ -190,6 +194,7 @@
       'agents': list([
         dict({
           'agent_id': 'backup.local',
+          'name': 'local',
         }),
       ]),
     }),
diff --git a/tests/components/backup/snapshots/test_websocket.ambr b/tests/components/backup/snapshots/test_websocket.ambr
index 43b4c1260dd..2a6bc14fb74 100644
--- a/tests/components/backup/snapshots/test_websocket.ambr
+++ b/tests/components/backup/snapshots/test_websocket.ambr
@@ -17,9 +17,11 @@
       'agents': list([
         dict({
           'agent_id': 'backup.local',
+          'name': 'local',
         }),
         dict({
-          'agent_id': 'domain.test',
+          'agent_id': 'test.test',
+          'name': 'test',
         }),
       ]),
     }),
diff --git a/tests/components/backup/test_manager.py b/tests/components/backup/test_manager.py
index 48e6db4ae9a..8a99f90d234 100644
--- a/tests/components/backup/test_manager.py
+++ b/tests/components/backup/test_manager.py
@@ -1203,8 +1203,8 @@ async def test_loading_platform_with_listener(
     await ws_client.send_json_auto_id({"type": "backup/agents/info"})
     resp = await ws_client.receive_json()
     assert resp["result"]["agents"] == [
-        {"agent_id": "backup.local"},
-        {"agent_id": "test.remote1"},
+        {"agent_id": "backup.local", "name": "local"},
+        {"agent_id": "test.remote1", "name": "remote1"},
     ]
     assert len(manager.local_backup_agents) == num_local_agents
 
@@ -1220,8 +1220,8 @@ async def test_loading_platform_with_listener(
     await ws_client.send_json_auto_id({"type": "backup/agents/info"})
     resp = await ws_client.receive_json()
     assert resp["result"]["agents"] == [
-        {"agent_id": "backup.local"},
-        {"agent_id": "test.remote2"},
+        {"agent_id": "backup.local", "name": "local"},
+        {"agent_id": "test.remote2", "name": "remote2"},
     ]
     assert len(manager.local_backup_agents) == num_local_agents
 
diff --git a/tests/components/cloud/test_backup.py b/tests/components/cloud/test_backup.py
index db742525a48..373bd164c0c 100644
--- a/tests/components/cloud/test_backup.py
+++ b/tests/components/cloud/test_backup.py
@@ -146,7 +146,10 @@ async def test_agents_info(
 
     assert response["success"]
     assert response["result"] == {
-        "agents": [{"agent_id": "backup.local"}, {"agent_id": "cloud.cloud"}],
+        "agents": [
+            {"agent_id": "backup.local", "name": "local"},
+            {"agent_id": "cloud.cloud", "name": "cloud"},
+        ],
     }
 
 
diff --git a/tests/components/hassio/test_backup.py b/tests/components/hassio/test_backup.py
index 40ab253b7e6..9483b513718 100644
--- a/tests/components/hassio/test_backup.py
+++ b/tests/components/hassio/test_backup.py
@@ -34,6 +34,7 @@ from homeassistant.components.backup import (
     BackupAgentPlatformProtocol,
     Folder,
 )
+from homeassistant.components.hassio import DOMAIN
 from homeassistant.components.hassio.backup import LOCATION_CLOUD_BACKUP
 from homeassistant.core import HomeAssistant
 from homeassistant.setup import async_setup_component
@@ -252,11 +253,11 @@ async def setup_integration(
 class BackupAgentTest(BackupAgent):
     """Test backup agent."""
 
-    domain = "test"
-
-    def __init__(self, name: str) -> None:
+    def __init__(self, name: str, domain: str = "test") -> None:
         """Initialize the backup agent."""
+        self.domain = domain
         self.name = name
+        self.unique_id = name
 
     async def async_download_backup(
         self, backup_id: str, **kwargs: Any
@@ -304,7 +305,10 @@ async def _setup_backup_platform(
 @pytest.mark.parametrize(
     ("mounts", "expected_agents"),
     [
-        (MountsInfo(default_backup_mount=None, mounts=[]), ["hassio.local"]),
+        (
+            MountsInfo(default_backup_mount=None, mounts=[]),
+            [BackupAgentTest("local", DOMAIN)],
+        ),
         (
             MountsInfo(
                 default_backup_mount=None,
@@ -321,7 +325,7 @@ async def _setup_backup_platform(
                     )
                 ],
             ),
-            ["hassio.local", "hassio.test"],
+            [BackupAgentTest("local", DOMAIN), BackupAgentTest("test", DOMAIN)],
         ),
         (
             MountsInfo(
@@ -339,7 +343,7 @@ async def _setup_backup_platform(
                     )
                 ],
             ),
-            ["hassio.local"],
+            [BackupAgentTest("local", DOMAIN)],
         ),
     ],
 )
@@ -348,7 +352,7 @@ async def test_agent_info(
     hass_ws_client: WebSocketGenerator,
     supervisor_client: AsyncMock,
     mounts: MountsInfo,
-    expected_agents: list[str],
+    expected_agents: list[BackupAgent],
 ) -> None:
     """Test backup agent info."""
     client = await hass_ws_client(hass)
@@ -361,7 +365,10 @@ async def test_agent_info(
 
     assert response["success"]
     assert response["result"] == {
-        "agents": [{"agent_id": agent_id} for agent_id in expected_agents],
+        "agents": [
+            {"agent_id": agent.agent_id, "name": agent.name}
+            for agent in expected_agents
+        ],
     }
 
 
diff --git a/tests/components/kitchen_sink/test_backup.py b/tests/components/kitchen_sink/test_backup.py
index 9e46845e1cb..827bde39d7d 100644
--- a/tests/components/kitchen_sink/test_backup.py
+++ b/tests/components/kitchen_sink/test_backup.py
@@ -55,7 +55,10 @@ async def test_agents_info(
 
     assert response["success"]
     assert response["result"] == {
-        "agents": [{"agent_id": "backup.local"}, {"agent_id": "kitchen_sink.syncer"}],
+        "agents": [
+            {"agent_id": "backup.local", "name": "local"},
+            {"agent_id": "kitchen_sink.syncer", "name": "syncer"},
+        ],
     }
 
     config_entry = hass.config_entries.async_entries(DOMAIN)[0]
@@ -66,7 +69,9 @@ async def test_agents_info(
     response = await client.receive_json()
 
     assert response["success"]
-    assert response["result"] == {"agents": [{"agent_id": "backup.local"}]}
+    assert response["result"] == {
+        "agents": [{"agent_id": "backup.local", "name": "local"}]
+    }
 
     await hass.config_entries.async_setup(config_entry.entry_id)
     await hass.async_block_till_done()
@@ -76,7 +81,10 @@ async def test_agents_info(
 
     assert response["success"]
     assert response["result"] == {
-        "agents": [{"agent_id": "backup.local"}, {"agent_id": "kitchen_sink.syncer"}],
+        "agents": [
+            {"agent_id": "backup.local", "name": "local"},
+            {"agent_id": "kitchen_sink.syncer", "name": "syncer"},
+        ],
     }
 
 
diff --git a/tests/components/synology_dsm/test_backup.py b/tests/components/synology_dsm/test_backup.py
index 0cd119cf015..436e3666176 100644
--- a/tests/components/synology_dsm/test_backup.py
+++ b/tests/components/synology_dsm/test_backup.py
@@ -208,8 +208,8 @@ async def test_agents_info(
     assert response["success"]
     assert response["result"] == {
         "agents": [
-            {"agent_id": "synology_dsm.Mock Title"},
-            {"agent_id": "backup.local"},
+            {"agent_id": "synology_dsm.mocked_syno_dsm_entry", "name": "Mock Title"},
+            {"agent_id": "backup.local", "name": "local"},
         ],
     }
 
@@ -231,7 +231,7 @@ async def test_agents_not_loaded(
     assert response["success"]
     assert response["result"] == {
         "agents": [
-            {"agent_id": "backup.local"},
+            {"agent_id": "backup.local", "name": "local"},
         ],
     }
 
@@ -251,8 +251,8 @@ async def test_agents_on_unload(
     assert response["success"]
     assert response["result"] == {
         "agents": [
-            {"agent_id": "synology_dsm.Mock Title"},
-            {"agent_id": "backup.local"},
+            {"agent_id": "synology_dsm.mocked_syno_dsm_entry", "name": "Mock Title"},
+            {"agent_id": "backup.local", "name": "local"},
         ],
     }
 
@@ -269,7 +269,7 @@ async def test_agents_on_unload(
     assert response["success"]
     assert response["result"] == {
         "agents": [
-            {"agent_id": "backup.local"},
+            {"agent_id": "backup.local", "name": "local"},
         ],
     }
 
@@ -299,7 +299,7 @@ async def test_agents_list_backups(
             "name": "Automatic backup 2025.2.0.dev0",
             "protected": True,
             "size": 13916160,
-            "agent_ids": ["synology_dsm.Mock Title"],
+            "agent_ids": ["synology_dsm.mocked_syno_dsm_entry"],
             "failed_agent_ids": [],
             "with_automatic_settings": None,
         }
@@ -323,7 +323,9 @@ async def test_agents_list_backups_error(
 
     assert response["success"]
     assert response["result"] == {
-        "agent_errors": {"synology_dsm.Mock Title": "Failed to list backups"},
+        "agent_errors": {
+            "synology_dsm.mocked_syno_dsm_entry": "Failed to list backups"
+        },
         "backups": [],
         "last_attempted_automatic_backup": None,
         "last_completed_automatic_backup": None,
@@ -362,7 +364,7 @@ async def test_agents_list_backups_disabled_filestation(
                 "name": "Automatic backup 2025.2.0.dev0",
                 "protected": True,
                 "size": 13916160,
-                "agent_ids": ["synology_dsm.Mock Title"],
+                "agent_ids": ["synology_dsm.mocked_syno_dsm_entry"],
                 "failed_agent_ids": [],
                 "with_automatic_settings": None,
             },
@@ -429,7 +431,9 @@ async def test_agents_get_backup_error(
 
     assert response["success"]
     assert response["result"] == {
-        "agent_errors": {"synology_dsm.Mock Title": "Failed to list backups"},
+        "agent_errors": {
+            "synology_dsm.mocked_syno_dsm_entry": "Failed to list backups"
+        },
         "backup": None,
     }
 
@@ -462,7 +466,7 @@ async def test_agents_download(
     backup_id = "abcd12ef"
 
     resp = await client.get(
-        f"/api/backup/download/{backup_id}?agent_id=synology_dsm.Mock Title"
+        f"/api/backup/download/{backup_id}?agent_id=synology_dsm.mocked_syno_dsm_entry"
     )
     assert resp.status == 200
     assert await resp.content.read() == b"backup data"
@@ -482,7 +486,7 @@ async def test_agents_download_not_existing(
     )
 
     resp = await client.get(
-        f"/api/backup/download/{backup_id}?agent_id=synology_dsm.Mock Title"
+        f"/api/backup/download/{backup_id}?agent_id=synology_dsm.mocked_syno_dsm_entry"
     )
     assert resp.reason == "Internal Server Error"
     assert resp.status == 500
@@ -524,7 +528,7 @@ async def test_agents_upload(
         mocked_open.return_value.read = Mock(side_effect=[b"test", b""])
         fetch_backup.return_value = test_backup
         resp = await client.post(
-            "/api/backup/upload?agent_id=synology_dsm.Mock Title",
+            "/api/backup/upload?agent_id=synology_dsm.mocked_syno_dsm_entry",
             data={"file": StringIO("test")},
         )
 
@@ -578,7 +582,7 @@ async def test_agents_upload_error(
             SynologyDSMAPIErrorException("api", "500", "error")
         )
         resp = await client.post(
-            "/api/backup/upload?agent_id=synology_dsm.Mock Title",
+            "/api/backup/upload?agent_id=synology_dsm.mocked_syno_dsm_entry",
             data={"file": StringIO("test")},
         )
 
@@ -609,7 +613,7 @@ async def test_agents_upload_error(
         ]
 
         resp = await client.post(
-            "/api/backup/upload?agent_id=synology_dsm.Mock Title",
+            "/api/backup/upload?agent_id=synology_dsm.mocked_syno_dsm_entry",
             data={"file": StringIO("test")},
         )
 
@@ -674,7 +678,9 @@ async def test_agents_delete_not_existing(
 
     assert response["success"]
     assert response["result"] == {
-        "agent_errors": {"synology_dsm.Mock Title": "Failed to delete the backup"}
+        "agent_errors": {
+            "synology_dsm.mocked_syno_dsm_entry": "Failed to delete the backup"
+        }
     }
 
 
@@ -701,7 +707,9 @@ async def test_agents_delete_error(
 
     assert response["success"]
     assert response["result"] == {
-        "agent_errors": {"synology_dsm.Mock Title": "Failed to delete the backup"}
+        "agent_errors": {
+            "synology_dsm.mocked_syno_dsm_entry": "Failed to delete the backup"
+        }
     }
     mock: AsyncMock = setup_dsm_with_filestation.file.delete_file
     assert len(mock.mock_calls) == 1