diff --git a/apps/api/app/services/ai_service.py b/apps/api/app/services/ai_service.py
index fb52d87df..33d6ba94b 100755
--- a/apps/api/app/services/ai_service.py
+++ b/apps/api/app/services/ai_service.py
@@ -207,7 +207,12 @@ def semantic_match_assets(
     """
     description = (description or "").strip()
     if not assets:
-        return {"matches": [], "source": "fallback", "description": description, "total": 0}
+        return {
+            "matches": [],
+            "source": "fallback",
+            "description": description,
+            "total": 0,
+        }
 
     client = get_doubao_client()
     if not client.is_available:
@@ -230,7 +235,9 @@ def semantic_match_assets(
         tags = asset.get("tags", [])
         tags_str = ",".join(str(t) for t in tags[:5])
         desc = str(asset.get("description", ""))[:80]
-        asset_summaries.append(f"ID:{aid} | 名称:{name} | 标签:[{tags_str}] | 描述:{desc}")
+        asset_summaries.append(
+            f"ID:{aid} | 名称:{name} | 标签:[{tags_str}] | 描述:{desc}"
+        )
 
     asset_ids = [str(a.get("id", "")) for a in assets[:50]]
 
@@ -248,7 +255,9 @@ def semantic_match_assets(
 
     user_prompt = (
         f"目标视频描述：{description}\n\n"
-        f"素材列表：\n" + "\n".join(asset_summaries) + "\n\n请返回每个素材的匹配分数JSON："
+        f"素材列表：\n"
+        + "\n".join(asset_summaries)
+        + "\n\n请返回每个素材的匹配分数JSON："
     )
 
     messages = [