diff --git a/app/db/adapters/subscription.py b/app/db/adapters/subscription.py
index 131512306..8436d00ce 100644
--- a/app/db/adapters/subscription.py
+++ b/app/db/adapters/subscription.py
@@ -600,6 +600,16 @@ class SessionSubscriptionRepository:
         """同步按可选状态读取订阅快照。"""
         return [_project_subscription(record) for record in self._sync_repository().list(state)]
 
+    def list_by_media_identity(
+        self,
+        media_source: MediaSource,
+        media_id: str,
+        music_type: Optional[str] = None,
+    ) -> builtins.list[SubscriptionSnapshot]:
+        """同步按规范媒体身份读取订阅快照。"""
+        records = self._sync_repository().list_by_media_identity(media_source, media_id, music_type)
+        return [_project_subscription(record) for record in records]
+
     async def async_get(self, subscribe_id: int) -> Optional[SubscriptionSnapshot]:
         """异步按主键读取订阅快照。"""
         record = await self._async_repository().async_get(subscribe_id)
diff --git a/tests/test_subscription_repository.py b/tests/test_subscription_repository.py
index 0fccb2431..fc367795f 100644
--- a/tests/test_subscription_repository.py
+++ b/tests/test_subscription_repository.py
@@ -7,6 +7,7 @@ from sqlalchemy import func, select
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.api.context import get_sync_subscription_repository
+from app.application.servarr import ServarrSubscriptionService
 from app.application.subscription.complete import CompleteSubscriptionCommand
 from app.application.subscription.contract import (
     SubscriptionIdentity,
@@ -84,6 +85,36 @@ def test_sync_api_repository_dependency_binds_sync_session(db) -> None:
     assert repository.get(-1) is None
 
 
+def test_servarr_sync_lookup_reads_session_repository(db) -> None:
+    """Servarr 同步 lookup 应从请求级订阅仓储读取媒体身份投影。"""
+    row = db.add(
+        Subscribe(
+            name="同步 lookup 订阅",
+            type=MediaType.MOVIE.value,
+            media_source=MediaSource.TMDB.value,
+            media_id="550",
+        )
+    )
+    db.add(
+        Subscribe(
+            name="其他媒体",
+            type=MediaType.MOVIE.value,
+            media_source=MediaSource.TMDB.value,
+            media_id="551",
+        )
+    )
+
+    repository = SessionSubscriptionRepository(db.session)
+    service = ServarrSubscriptionService(
+        async_repository=repository,
+        sync_repository=repository,
+    )
+
+    result = service.list_by_media_identity_sync(MediaSource.TMDB, "550")
+
+    assert [(item.id, item.name, item.media_id) for item in result] == [(row.id, "同步 lookup 订阅", "550")]
+
+
 def test_session_repository_leaves_commit_and_rollback_to_caller(db) -> None:
     """请求级仓储只 flush 暂存记录，调用方回滚后数据库不保留该记录。"""
     db.watermark(Subscribe)