diff --git a/nexus.py b/nexus.py
index 9e2cb4b..0d52447 100644
--- a/nexus.py
+++ b/nexus.py
@@ -370,6 +370,34 @@ Mode @agent :
     # Broadcast handler
     # ──────────────────────────────────────────────
 
+    def on_xmpp_connected(self):
+        """Au démarrage XMPP : envoie le récap des agents connus dans le MUC."""
+        import time as _time
+        _time.sleep(2)  # Laisser le MUC join et les agents publier
+        with self._online_lock:
+            online = set(self._online_agents)
+        all_caps = self.registry.all_agents()
+        lines = ["── Agents au démarrage ──"]
+        for caps in sorted(all_caps, key=lambda c: c.agent_id):
+            if caps.agent_id == self.agent_id:
+                continue
+            icon = "🟢" if caps.agent_id in online else "🔴"
+            label = "en ligne" if caps.agent_id in online else "hors ligne"
+            lines.append(f"  {icon} {caps.agent_id} — {label}")
+        if len(lines) > 1 and self.xmpp:
+            self.xmpp.send_to_group("\n".join(lines))
+
+    def on_agent_status_change(self, agent_id: str, status: str):
+        """Notifie le MUC et les admins quand un agent change de statut."""
+        icon = "🟢" if status == "online" else "🔴"
+        label = "en ligne" if status == "online" else "hors ligne"
+        text = f"{icon} {agent_id} est {label}."
+        logger.info(f"[Nexus] Statut agent : {text}")
+        if self.xmpp:
+            if self.xmpp.muc_room:
+                self.xmpp.send_to_group(text)
+            self.xmpp.send_to_all_admins(text)
+
     def on_broadcast(self, msg: Message):
         """Nexus reçoit les broadcasts — les transmet à l'admin si pertinent."""
         if msg.type == MessageType.ALERT:
diff --git a/skills/agents_status.py b/skills/agents_status.py
new file mode 100644
index 0000000..1e7b2a9
--- /dev/null
+++ b/skills/agents_status.py
@@ -0,0 +1,28 @@
+"""
+Skill AGENTS_STATUS — afficher le statut en temps réel de tous les agents.
+
+Usage LLM : SKILL:agents_status ARGS:
+"""
+DESCRIPTION = "Afficher le statut en temps réel de tous les agents (online/offline)"
+USAGE = "SKILL:agents_status ARGS:(aucun argument)"
+
+
+def run(args: str, context) -> str:
+    with context.agent._online_lock:
+        online = set(context.agent._online_agents)
+
+    all_caps = context.registry.all_agents()
+
+    if not all_caps:
+        return "Aucun agent connu dans le registre."
+
+    lines = ["── Statut des agents ──────────────────"]
+    for caps in sorted(all_caps, key=lambda c: c.agent_id):
+        if caps.agent_id == context.agent_id:
+            continue  # Ne pas s'afficher soi-même
+        icon = "🟢" if caps.agent_id in online else "🔴"
+        label = "en ligne" if caps.agent_id in online else "hors ligne"
+        lines.append(f"  {icon} {caps.agent_id} [{caps.agent_type}] — {label}")
+        lines.append(f"     {caps.description}")
+
+    return "\n".join(lines) if len(lines) > 1 else "Aucun autre agent connu."