diff --git a/xmpp_agent_core.py b/xmpp_agent_core.py
index 12d95ad..9745b4b 100644
--- a/xmpp_agent_core.py
+++ b/xmpp_agent_core.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 """XMPP Bot - 统一版，支持 --agent mohe|zhiwei|xiao 参数"""
-import asyncio, logging, ssl, json, urllib.request, os, time, sys
+import asyncio, logging, ssl, json, urllib.request, os, time, sys, re, sqlite3
 from slixmpp import ClientXMPP
 
 # ── Agent 配置 ──────────────────────────────────────────────
@@ -139,6 +139,54 @@ class AgentBot(ClientXMPP):
             if nickname == AGENT_NICK:
                 return
 
+            # Coordinator 模式：读取当前协调者和被授权发言者
+            _coordinator = None
+            _granted = None
+            try:
+                _cdb = sqlite3.connect('/home/hmo/.hermes/state.db')
+                _crow = _cdb.execute("SELECT value FROM state_meta WHERE key='coregroup_coordinator'").fetchone()
+                _grow = _cdb.execute("SELECT value FROM state_meta WHERE key='coregroup_granted_speaker'").fetchone()
+                _cdb.close()
+                if _crow: _coordinator = _crow[0]
+                if _grow: _granted = _grow[0]
+            except Exception:
+                pass
+
+            # hmo 可以动态切换 coordinator
+            if nickname == 'hmo' and 'coordinator=' in body.lower():
+                for _name in ['mohe', 'zhiwei', 'xxm']:
+                    if f'coordinator={_name}' in body.lower():
+                        try:
+                            _wdb = sqlite3.connect('/home/hmo/.hermes/state.db')
+                            _wdb.execute("INSERT OR REPLACE INTO state_meta (key, value) VALUES ('coregroup_coordinator', ?)", (_name,))
+                            _wdb.execute("DELETE FROM state_meta WHERE key='coregroup_granted_speaker'")
+                            _wdb.commit()
+                            _wdb.close()
+                            _coordinator = _name
+                            _granted = None
+                            logging.info(f"👑 Coordinator 切换为 {_name}")
+                        except Exception:
+                            pass
+                        break
+
+            # 判断当前 bot 能否处理这条消息
+            _can_speak = False
+            if _coordinator == AGENT_NICK:
+                _can_speak = True  # 协调者始终能说
+            if _granted == AGENT_NICK:
+                _can_speak = True  # 被授权者也能说
+                # 用完后自动清除授权（一次性）
+                try:
+                    _wdb = sqlite3.connect('/home/hmo/.hermes/state.db')
+                    _wdb.execute("DELETE FROM state_meta WHERE key='coregroup_granted_speaker'")
+                    _wdb.commit()
+                    _wdb.close()
+                except Exception:
+                    pass
+
+            if not _can_speak:
+                return  # 代码层拦截，不走 LLM
+
             # 硬闭嘴闸门：hmo 说闭嘴类的话 → 静默 5 分钟
             _silent_until = getattr(self, '_silent_until', 0)
             if time.time() < _silent_until:
@@ -160,6 +208,9 @@ class AgentBot(ClientXMPP):
                 "3. 别人说错了关键事实，不纠正会有后果\n"
                 "如果以上都不符合，你的回复必须只包含 __SILENT__ 这10个字符，"
                 "不要有任何其他内容（不要前缀、不要解释、不要标点、不要空格）。\n\n"
+                "注意：你是当前群聊的协调者（coordinator）。如果你认为这个问题应该由其他 Agent 回答，"
+                "可以在回复中包含 [GRANT:agent名] 标记（例如 [GRANT:zhiwei]），bot 会自动授权该 Agent 发言一次。"
+                "授权后该 Agent 的回复会出现在群里，你不需要自己回答。\n\n"
                 f"[核心群 {room}] {nickname} 说: {body}"
             )
             await self.call_hermes(ctx_body, room, is_group=True)
@@ -211,8 +262,23 @@ class AgentBot(ClientXMPP):
             finish = data.get("choices", [{}])[0].get("finish_reason", "")
 
             if reply.strip() and finish != "silent":
+                # Coordinator 授权机制：检测回复中的 [GRANT:xxx] 标记
+                _grant_match = re.search(r'\[GRANT:(\w+)\]', reply)
+                if _grant_match:
+                    _grant_name = _grant_match.group(1)
+                    try:
+                        _gdb = sqlite3.connect('/home/hmo/.hermes/state.db')
+                        _gdb.execute("INSERT OR REPLACE INTO state_meta (key, value) VALUES ('coregroup_granted_speaker', ?)", (_grant_name,))
+                        _gdb.commit()
+                        _gdb.close()
+                        logging.info(f"🎤 Coordinator 授权 {_grant_name} 发言")
+                    except Exception:
+                        pass
+                    reply = reply.replace(_grant_match.group(0), '').strip()
+
                 if msg_type == 'groupchat':
                     self.send_message(mto=sender, mbody=reply, mtype='groupchat')
+                    # 防回声：记录已发送的消息正文
                     sent_norm = reply.strip()[:100]
                     self._recent_sent.append(sent_norm)
                     if len(self._recent_sent) > 10: