diff --git a/frontend-web/src/components/workspace/agents/agent-card.tsx b/frontend-web/src/components/workspace/agents/agent-card.tsx
index cfd7e8c2..d80487c2 100644
--- a/frontend-web/src/components/workspace/agents/agent-card.tsx
+++ b/frontend-web/src/components/workspace/agents/agent-card.tsx
@@ -77,6 +77,7 @@ import {
 import { getAgent } from "@/core/agents/api";
 import type { Agent, AgentQuestion, UpdateAgentRequest } from "@/core/agents";
 import { getStoredAuth } from "@/core/auth";
+import { useLiveAccount } from "@/core/auth/use-live-account";
 import { useI18n } from "@/core/i18n/hooks";
 import { useSkills } from "@/core/skills/hooks";
 import { formatDateTime } from "@/core/utils/datetime";
@@ -246,6 +247,8 @@ export function AgentCard({ agent, layout = "card", onPublisherClick }: AgentCar
 
   const storedAuth = useMemo(() => getStoredAuth(), []);
   const currentUserId = storedAuth?.user_id ?? null;
+  // 发布请求实际以「实时」token 执行 —— 用 live 账号来提示发布者并检测账号是否被切换。
+  const live = useLiveAccount();
   const isAdmin = storedAuth?.system_role === "admin";
   const isBuiltin = agent.builtin;
   const isOwned =
@@ -414,18 +417,38 @@ export function AgentCard({ agent, layout = "card", onPublisherClick }: AgentCar
       setPublishPickerOpen(true);
       return;
     }
+    if (!warnIfAccountSwitched()) {
+      return;
+    }
     try {
       await updateAgent.mutateAsync({
         id: agent.id,
         request: { published: !agent.published },
       });
-      toast.success(agent.published ? "已取消发布" : "已发布");
+      toast.success(
+        agent.published ? "已取消发布" : `已发布（操作账号：${live.displayName}）`,
+      );
     } catch (err) {
       toast.error(err instanceof Error ? err.message : String(err));
     }
   }
 
+  // 发布操作以实时 token 执行。若会话中途账号被切换（常见于另一标签页登录了别的
+  // 账号），先弹一次确认 —— 避免误以本人之外的账号执行发布。返回 false = 用户取消。
+  function warnIfAccountSwitched(): boolean {
+    if (!live.switched) {
+      return true;
+    }
+    return window.confirm(
+      `当前登录账号已从「${live.mountDisplayName}」切换为「${live.displayName}」。\n` +
+        `本次发布将以「${live.displayName}」执行。如需以「${live.mountDisplayName}」操作，请取消并刷新页面。\n\n仍要继续吗？`,
+    );
+  }
+
   async function handlePublishToSquare(squareId: string) {
+    if (!warnIfAccountSwitched()) {
+      return;
+    }
     try {
       await updateAgent.mutateAsync({
         id: agent.id,
@@ -433,7 +456,7 @@ export function AgentCard({ agent, layout = "card", onPublisherClick }: AgentCar
       });
       const sqName =
         publishSquares?.squares.find((s) => s.id === squareId)?.name ?? "广场";
-      toast.success(`已发布到「${sqName}」`);
+      toast.success(`已发布到「${sqName}」（操作账号：${live.displayName}）`);
       setPublishPickerOpen(false);
     } catch (err) {
       toast.error(err instanceof Error ? err.message : String(err));
@@ -1094,6 +1117,23 @@ export function AgentCard({ agent, layout = "card", onPublisherClick }: AgentCar
         loading={updateAgent.isPending}
         onConfirm={(squareId) => void handlePublishToSquare(squareId)}
         description="请选择要把该智能体发布到哪个广场。每个智能体只能归属一个广场，不会重复出现。"
+        accountNotice={
+          <div className="text-xs">
+            <p className="text-muted-foreground">
+              发布操作账号：
+              <span className="text-foreground font-medium">
+                「{live.displayName}」
+              </span>
+            </p>
+            {live.switched && (
+              <p className="text-destructive mt-1">
+                ⚠ 当前登录账号已从「{live.mountDisplayName}」切换为「
+                {live.displayName}」。如需以「{live.mountDisplayName}
+                」操作，请刷新页面确认。
+              </p>
+            )}
+          </div>
+        }
       />
     </>
   );
diff --git a/frontend-web/src/components/workspace/agents/agent-detail-panel.tsx b/frontend-web/src/components/workspace/agents/agent-detail-panel.tsx
index 9a40afc3..1273088c 100644
--- a/frontend-web/src/components/workspace/agents/agent-detail-panel.tsx
+++ b/frontend-web/src/components/workspace/agents/agent-detail-panel.tsx
@@ -59,6 +59,7 @@ import {
   type UpdateAgentRequest,
 } from "@/core/agents";
 import { getStoredAuth } from "@/core/auth";
+import { useLiveAccount } from "@/core/auth/use-live-account";
 import { isAgentSkillCandidate } from "@/core/skills";
 import { useSkills } from "@/core/skills/hooks";
 import { usePublishSquares } from "@/core/system-settings/hooks";
@@ -156,6 +157,8 @@ export function AgentDetailPanel({
   const [deleteOpen, setDeleteOpen] = useState(false);
   const [publishPickerOpen, setPublishPickerOpen] = useState(false);
   const [detailSkillName, setDetailSkillName] = useState<string | null>(null);
+  // 发布以实时 token 执行 —— 用 live 账号提示发布者并检测账号是否被切换。
+  const live = useLiveAccount();
 
   const updateAgent = useUpdateAgent();
   const deleteAgent = useDeleteAgent();
@@ -338,19 +341,39 @@ export function AgentDetailPanel({
       setPublishPickerOpen(true);
       return;
     }
+    if (!warnIfAccountSwitched()) {
+      return;
+    }
     try {
       await updateAgent.mutateAsync({
         id: agent.id,
         request: { published: !agent.published },
       });
-      toast.success(agent.published ? "已下架" : "已发布");
+      toast.success(
+        agent.published ? "已下架" : `已发布（操作账号：${live.displayName}）`,
+      );
     } catch (err) {
       toast.error(err instanceof Error ? err.message : String(err));
     }
   }
 
+  // 发布以实时 token 执行。会话中途账号被切换（常见于另一标签页登录了别的账号）时
+  // 先弹确认，避免误以本人之外的账号执行发布。返回 false = 用户取消。
+  function warnIfAccountSwitched(): boolean {
+    if (!live.switched) {
+      return true;
+    }
+    return window.confirm(
+      `当前登录账号已从「${live.mountDisplayName}」切换为「${live.displayName}」。\n` +
+        `本次发布将以「${live.displayName}」执行。如需以「${live.mountDisplayName}」操作，请取消并刷新页面。\n\n仍要继续吗？`,
+    );
+  }
+
   async function handlePublishToSquare(squareId: string) {
     if (!agent) return;
+    if (!warnIfAccountSwitched()) {
+      return;
+    }
     try {
       await updateAgent.mutateAsync({
         id: agent.id,
@@ -358,7 +381,7 @@ export function AgentDetailPanel({
       });
       const sqName =
         publishSquares?.squares.find((s) => s.id === squareId)?.name ?? "广场";
-      toast.success(`已发布到「${sqName}」`);
+      toast.success(`已发布到「${sqName}」（操作账号：${live.displayName}）`);
       setPublishPickerOpen(false);
     } catch (err) {
       toast.error(err instanceof Error ? err.message : String(err));
@@ -901,6 +924,23 @@ export function AgentDetailPanel({
         loading={updateAgent.isPending}
         onConfirm={(squareId) => void handlePublishToSquare(squareId)}
         description="请选择要把该智能体发布到哪个广场。每个智能体只能归属一个广场，不会重复出现。"
+        accountNotice={
+          <div className="text-xs">
+            <p className="text-muted-foreground">
+              发布操作账号：
+              <span className="text-foreground font-medium">
+                「{live.displayName}」
+              </span>
+            </p>
+            {live.switched && (
+              <p className="text-destructive mt-1">
+                ⚠ 当前登录账号已从「{live.mountDisplayName}」切换为「
+                {live.displayName}」。如需以「{live.mountDisplayName}
+                」操作，请刷新页面确认。
+              </p>
+            )}
+          </div>
+        }
       />
     </>
   );
diff --git a/frontend-web/src/components/workspace/publish-square-picker-dialog.tsx b/frontend-web/src/components/workspace/publish-square-picker-dialog.tsx
index 65aa7a51..fd6fecc2 100644
--- a/frontend-web/src/components/workspace/publish-square-picker-dialog.tsx
+++ b/frontend-web/src/components/workspace/publish-square-picker-dialog.tsx
@@ -1,7 +1,7 @@
 "use client";
 
 import { CheckIcon } from "lucide-react";
-import { useEffect, useState } from "react";
+import { type ReactNode, useEffect, useState } from "react";
 
 import { Button } from "@/components/ui/button";
 import {
@@ -26,6 +26,8 @@ interface PublishSquarePickerDialogProps {
   loading?: boolean;
   title?: string;
   description?: string;
+  /** 可选提示节点，渲染在描述下方 —— 用于显示「本次发布将以哪个账号进行」及账号切换告警。 */
+  accountNotice?: ReactNode;
 }
 
 /** A "publish to which square (发布广场)?" chooser. Squares are rendered as a
@@ -39,6 +41,7 @@ export function PublishSquarePickerDialog({
   loading,
   title = "选择发布广场",
   description = "请选择要把它发布到哪个广场。每个项目只能归属一个广场，不会重复出现。",
+  accountNotice,
 }: PublishSquarePickerDialogProps) {
   const [selected, setSelected] = useState<string>(
     defaultSquareId || squares[0]?.id || "",
@@ -58,6 +61,7 @@ export function PublishSquarePickerDialog({
           <DialogTitle>{title}</DialogTitle>
           <DialogDescription>{description}</DialogDescription>
         </DialogHeader>
+        {accountNotice}
         <div className="max-h-[50vh] space-y-1.5 overflow-y-auto py-1">
           {squares.map((sq) => {
             const active = selected === sq.id;
diff --git a/frontend-web/src/core/auth/use-live-account.ts b/frontend-web/src/core/auth/use-live-account.ts
new file mode 100644
index 00000000..a9417694
--- /dev/null
+++ b/frontend-web/src/core/auth/use-live-account.ts
@@ -0,0 +1,82 @@
+"use client";
+
+import { useEffect, useRef, useState } from "react";
+
+import { getAccountDisplayName, getStoredAuth } from "@/core/auth";
+import { isEmbedActive } from "@/core/embed/embed-session";
+
+const AUTH_STORAGE_KEY = "deerflow.auth";
+
+export interface LiveAccount {
+  /** 实时登录用户 id（随 storage/focus 刷新）。null = 未登录。 */
+  userId: string | null;
+  /** 实时显示名（邮箱 @ 前缀，否则 user_id）。 */
+  displayName: string;
+  /** 组件首次挂载时捕获的用户 id。 */
+  mountUserId: string | null;
+  /** 组件首次挂载时捕获的显示名。 */
+  mountDisplayName: string;
+  /**
+   * 当前登录账号与挂载时不一致 —— 即本视图加载后登录被切换过（通常是在另一个
+   * 标签页登录了别的账号）。归属/发布类操作必须据此提醒，避免误归属。
+   */
+  switched: boolean;
+}
+
+/**
+ * 跟踪「实时」登录账号，而不是挂载时缓存的值。
+ *
+ * 鉴权 token 存在 localStorage（非嵌入态下被同浏览器所有标签页共享），所以在
+ * 另一个标签页登录会**静默替换**本标签页 API 调用所用的 token。任何会决定归属的
+ * 界面（创建/发布智能体）都必须显示请求实际将以哪个账号执行，并在会话中途被切换
+ * 账号时给出提示 —— 否则会出现「用 A 账号创建却归到 B 账号名下」。
+ */
+export function useLiveAccount(): LiveAccount {
+  const mountRef = useRef<{ id: string | null; name: string } | null>(null);
+  if (mountRef.current === null) {
+    const auth = getStoredAuth();
+    mountRef.current = {
+      id: auth?.user_id ?? null,
+      name: getAccountDisplayName(auth),
+    };
+  }
+  const [live, setLive] = useState(() => mountRef.current!);
+
+  useEffect(() => {
+    function refresh() {
+      const auth = getStoredAuth();
+      const id = auth?.user_id ?? null;
+      const name = getAccountDisplayName(auth);
+      setLive((prev) =>
+        prev.id === id && prev.name === name ? prev : { id, name },
+      );
+    }
+    // 嵌入(iframe)态鉴权走按标签页的 sessionStorage、不跨标签，收不到 storage 事件
+    // —— 只挂在正常态；focus/visibilitychange 兜底刷新两种形态都有效。
+    function onStorage(e: StorageEvent) {
+      if (e.key === AUTH_STORAGE_KEY) {
+        refresh();
+      }
+    }
+    if (!isEmbedActive()) {
+      window.addEventListener("storage", onStorage);
+    }
+    window.addEventListener("focus", refresh);
+    document.addEventListener("visibilitychange", refresh);
+    refresh();
+    return () => {
+      window.removeEventListener("storage", onStorage);
+      window.removeEventListener("focus", refresh);
+      document.removeEventListener("visibilitychange", refresh);
+    };
+  }, []);
+
+  const mount = mountRef.current!;
+  return {
+    userId: live.id,
+    displayName: live.name,
+    mountUserId: mount.id,
+    mountDisplayName: mount.name,
+    switched: live.id !== null && mount.id !== null && live.id !== mount.id,
+  };
+}
diff --git a/frontend-web/src/pages/NewAgentPage.tsx b/frontend-web/src/pages/NewAgentPage.tsx
index 4ab2564a..0906cd7c 100644
--- a/frontend-web/src/pages/NewAgentPage.tsx
+++ b/frontend-web/src/pages/NewAgentPage.tsx
@@ -48,6 +48,7 @@ import {
   updateAgent,
 } from "@/core/agents/api";
 import { getStoredAuth } from "@/core/auth";
+import { useLiveAccount } from "@/core/auth/use-live-account";
 import { useI18n } from "@/core/i18n/hooks";
 import { useModels } from "@/core/models/hooks";
 import { isAgentSkillCandidate, type Skill } from "@/core/skills";
@@ -96,6 +97,10 @@ export default function NewAgentPage() {
   const { skills, isLoading: isSkillsLoading } = useSkills();
   const { models, isLoading: isModelsLoading } = useModels();
 
+  // 创建请求的归属账号取自「实时」token（apiFetch 每次都重读 localStorage），而非
+  // 本页加载时缓存的身份 —— 用 live 账号提示归属并检测账号是否在会话中途被切换。
+  const live = useLiveAccount();
+
   // 可配置的技能限定为「内置 + 自己的 + 已发布到广场的」，
   // 其他用户未发布的自定义技能不可选。
   const storedAuth = useMemo(() => getStoredAuth(), []);
@@ -287,13 +292,37 @@ export default function NewAgentPage() {
   ]);
 
   const handleSaveAgent = useCallback(async () => {
+    // 新建时归属账号 = 创建请求所用的实时 token 对应账号。若本页加载后登录被切换
+    // （常见于另一标签页登录了别的账号），现在创建会把智能体静默归到新账号名下。
+    // 先弹确认，避免「用 A 账号创建却归到 B 账号」。更新已有智能体不改归属，故跳过。
+    if (!agentId && live.switched) {
+      const ok = window.confirm(
+        `当前登录账号已从「${live.mountDisplayName}」切换为「${live.displayName}」。\n` +
+          `现在创建将把该智能体归属到「${live.displayName}」名下。\n` +
+          `如需归属「${live.mountDisplayName}」，请取消并刷新页面后重新登录。\n\n仍要以「${live.displayName}」创建吗？`,
+      );
+      if (!ok) {
+        return;
+      }
+    }
     const saved = await ensureAgent();
     if (!saved) {
       return;
     }
-    toast.success(`智能体「${saved.name}」已保存`);
+    toast.success(
+      agentId
+        ? `智能体「${saved.name}」已保存`
+        : `智能体「${saved.name}」已创建（归属账号：${live.displayName}）`,
+    );
     router.push("/page/workspace/agents");
-  }, [ensureAgent, router]);
+  }, [
+    agentId,
+    ensureAgent,
+    live.displayName,
+    live.mountDisplayName,
+    live.switched,
+    router,
+  ]);
 
   const handleChatSubmit = useCallback(
     async (text: string) => {
@@ -661,6 +690,25 @@ export default function NewAgentPage() {
                   <p className="text-destructive text-sm">{formError}</p>
                 ) : null}
 
+                <div className="rounded-md border px-3 py-2 text-xs dark:border-[#1B477E] dark:bg-[#022248]">
+                  <p className="text-muted-foreground">
+                    {agentId ? "当前登录账号：" : "创建后归属账号："}
+                    <span className="text-foreground font-medium">
+                      「{live.displayName}」
+                    </span>
+                  </p>
+                  {live.switched && (
+                    <p className="text-destructive mt-1">
+                      ⚠ 本页加载时为「{live.mountDisplayName}」，现已切换为「
+                      {live.displayName}」。
+                      {agentId
+                        ? "继续保存将以当前账号执行。"
+                        : `继续创建将归属「${live.displayName}」。`}
+                      建议刷新页面确认账号。
+                    </p>
+                  )}
+                </div>
+
                 <Button
                   className="w-full"
                   onClick={() => void handleSaveAgent()}