diff --git a/AgentCompany-New/src/renderer/src/pages/ChatPage.tsx b/AgentCompany-New/src/renderer/src/pages/ChatPage.tsx
index 7ce26917..55f17ee8 100644
--- a/AgentCompany-New/src/renderer/src/pages/ChatPage.tsx
+++ b/AgentCompany-New/src/renderer/src/pages/ChatPage.tsx
@@ -214,6 +214,7 @@ export function ChatPage({ snapshot, actions }: PageProps) {
         directs={directs}
         agents={agents}
         messages={messagesAll}
+        presence={snapshot.chatPresence}
         activeSpaceId={activeSpaceId}
         onSelect={(spaceId) => {
           setSelectedSpaceId(spaceId);
diff --git a/AgentCompany-New/src/renderer/src/pages/chat/ChatSidebar.tsx b/AgentCompany-New/src/renderer/src/pages/chat/ChatSidebar.tsx
index f039352d..5a7aad32 100644
--- a/AgentCompany-New/src/renderer/src/pages/chat/ChatSidebar.tsx
+++ b/AgentCompany-New/src/renderer/src/pages/chat/ChatSidebar.tsx
@@ -1,13 +1,29 @@
 import type { ReactNode } from "react";
 import { Avatar, Icon, IconButton } from "../../shared/ui";
-import type { AgentRecord, ChatMessageRecord, ChatSpaceRecord } from "../../../../shared/domain";
+import type { AgentRecord, ChatMessageRecord, ChatPresenceRecord, ChatSpaceRecord } from "../../../../shared/domain";
 import { countMessagesIn } from "./chat-helpers";
 
+function presenceColor(status: string | undefined): string | null {
+  switch (status) {
+    case "active":
+    case "online":
+      return "var(--green)";
+    case "waiting_approval":
+    case "busy":
+      return "var(--amber)";
+    case "thinking":
+      return "var(--accent)";
+    default:
+      return null;
+  }
+}
+
 export function ChatSidebar({
   channels,
   directs,
   agents,
   messages,
+  presence,
   activeSpaceId,
   onSelect,
   onCreateSpace,
@@ -16,10 +32,12 @@ export function ChatSidebar({
   directs: ChatSpaceRecord[];
   agents: AgentRecord[];
   messages: ChatMessageRecord[];
+  presence: ChatPresenceRecord[];
   activeSpaceId: string | null;
   onSelect: (spaceId: string) => void;
   onCreateSpace: () => void;
 }) {
+  const presenceByPrincipal = new Map(presence.map((entry) => [entry.principalId, entry.status]));
   return (
     <aside className="secondary-pane">
       <div className="row" style={{ padding: "4px 8px 12px" }}>
@@ -47,6 +65,7 @@ export function ChatSidebar({
                 key={space.id}
                 space={space}
                 agents={agents}
+                presenceByPrincipal={presenceByPrincipal}
                 active={space.id === activeSpaceId}
                 count={countMessagesIn(space.id, messages)}
                 onClick={() => onSelect(space.id)}
@@ -95,20 +114,30 @@ function ChannelItem({
 function DirectItem({
   space,
   agents,
+  presenceByPrincipal,
   active,
   count,
   onClick,
 }: {
   space: ChatSpaceRecord;
   agents: AgentRecord[];
+  presenceByPrincipal: Map<string, string>;
   active: boolean;
   count: number;
   onClick: () => void;
 }) {
   const counterpart = agents.find((agent) => space.name.includes(agent.name));
+  const dotColor = counterpart ? presenceColor(presenceByPrincipal.get(counterpart.id)) : null;
   return (
     <button type="button" className={`nav-item ${active ? "active" : ""}`.trim()} onClick={onClick}>
-      {counterpart ? <Avatar name={counterpart.name} size="sm" bot /> : <Icon name="user" size={13} />}
+      {counterpart ? (
+        <span className="presence">
+          <Avatar name={counterpart.name} size="sm" bot />
+          {dotColor && <span className="presence-dot" style={{ background: dotColor }} />}
+        </span>
+      ) : (
+        <Icon name="user" size={13} />
+      )}
       <span>{space.name}</span>
       {count > 0 && <span className="nav-badge">{count}</span>}
     </button>
diff --git a/AgentCompany-New/src/renderer/src/styles.css b/AgentCompany-New/src/renderer/src/styles.css
index 35756ef5..cd5bbebf 100644
--- a/AgentCompany-New/src/renderer/src/styles.css
+++ b/AgentCompany-New/src/renderer/src/styles.css
@@ -311,6 +311,20 @@ a { color: inherit; }
   min-height: 0;
   overflow-y: auto;
 }
+.presence {
+  position: relative;
+  display: inline-flex;
+  flex-shrink: 0;
+}
+.presence-dot {
+  position: absolute;
+  right: -1px;
+  bottom: -1px;
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+  border: 1.5px solid var(--bg);
+}
 .page { max-width: 1100px; }
 .page-wide { width: 100%; }
 .page-h1 {