diff --git a/src/daemon/counter.py b/src/daemon/counter.py
index ba095b9..4ecca6d 100644
--- a/src/daemon/counter.py
+++ b/src/daemon/counter.py
@@ -68,6 +68,14 @@ class ActiveAgentCounter:
     def global_active(self) -> int:
         return self._global_active
 
+    @property
+    def max_global(self) -> int:
+        return self._max_global
+
     @property
     def active_agents(self) -> Dict[str, int]:
         return dict(self._active)
+
+    def is_near_limit(self, margin: int = 1) -> bool:
+        """全局活跃数是否接近上限"""
+        return self._global_active >= self._max_global - margin