diff --git a/backend/app/api/bot_kpis.py b/backend/app/api/bot_kpis.py
index f95446fa..8a982bd8 100644
--- a/backend/app/api/bot_kpis.py
+++ b/backend/app/api/bot_kpis.py
@@ -97,6 +97,9 @@ def list_bot_kpis(
             "score": score,
             "status": status,
             "period": latest_val.period if latest_val else None,
+            # P0-① 三区标注: Bot KPI值最近回填时间/批次（UI BotSourceTag 消费）
+            "value_updated_at": latest_val.calculated_at.strftime("%Y-%m-%d %H:%M") if latest_val and latest_val.calculated_at else None,
+            "value_source_batch": latest_val.source_batch if latest_val else None,
             "frequency": k.frequency or "monthly",
         })
 
diff --git a/backend/app/api/kpis.py b/backend/app/api/kpis.py
index e978426f..8885656b 100644
--- a/backend/app/api/kpis.py
+++ b/backend/app/api/kpis.py
@@ -548,6 +548,8 @@ def list_kpi_values(
             "source_batch": v.source_batch or "",
             "data_status": v.data_status,
             "remark": v.remark or "",
+            # P0-① 三区标注: C区Bot回填时间
+            "updated_at": v.calculated_at.strftime("%Y-%m-%d %H:%M") if v.calculated_at else None,
         } for v in vals]
     }
 
@@ -608,6 +610,8 @@ def get_kpi(kpi_id: int, db: Session = Depends(get_db), entity_id: int = Depends
             "source_type": v.source_type,
             "data_status": v.data_status,
             "source_batch": v.source_batch,
+            # P0-① 三区标注: C区Bot回填时间（UI BotSourceTag 消费）
+            "updated_at": v.calculated_at.strftime("%Y-%m-%d %H:%M") if v.calculated_at else None,
         })
     return result