diff --git a/src/daemon/spawner.py b/src/daemon/spawner.py
index 11622ae..820f64e 100644
--- a/src/daemon/spawner.py
+++ b/src/daemon/spawner.py
@@ -255,6 +255,29 @@ class AgentSpawner:
         self._compact_waits: Dict[str, int] = {}
         # B1 假死计数器 {task_id: count}
         self._stuck_counts: Dict[str, int] = {}
+        self._valid_agents_cache: Optional[set] = None
+
+    def _load_valid_agents(self) -> set:
+        """从 config/default.yaml 读取有效 Agent ID 列表（带缓存）"""
+        if self._valid_agents_cache is not None:
+            return self._valid_agents_cache
+        config_path = Path(__file__).parent.parent / "config" / "default.yaml"
+        if config_path.exists():
+            try:
+                import yaml
+                with open(config_path) as f:
+                    cfg = yaml.safe_load(f)
+                profiles = cfg.get("daemon", {}).get("agent_profiles", {})
+                if profiles:
+                    self._valid_agents_cache = set(profiles.keys())
+                    return self._valid_agents_cache
+            except Exception:
+                pass
+        self._valid_agents_cache = {
+            "zhangfei-dev", "guanyu-dev", "zhaoyun-data",
+            "jiangwei-infra", "pangtong-fujunshi", "simayi-challenger"
+        }
+        return self._valid_agents_cache
 
     @property
     def active_sessions(self) -> Dict[str, Dict[str, Any]]:
@@ -393,6 +416,10 @@ curl -X POST http://{self.api_host}:{self.api_port}/api/projects/{project_id}/ta
         safe_title = (title or "").replace('"', '\\"')[:100]
         safe_text = (description or "").replace('"', '\\"')
 
+        # 获取有效 Agent 列表（从 config/default.yaml 读取）
+        valid_agents_list = self._load_valid_agents()
+        valid_agents_str = " / ".join(sorted(valid_agents_list))
+
         common_kwargs = dict(
             from_agent=from_agent,
             title=safe_title,
@@ -401,6 +428,7 @@ curl -X POST http://{self.api_host}:{self.api_port}/api/projects/{project_id}/ta
             agent_id=agent_id,
             api_host=self.api_host,
             api_port=self.api_port,
+            valid_agents=valid_agents_str,
         )
 
         if performative == "inform":