diff --git a/internal/channels/feishu/bot.go b/internal/channels/feishu/bot.go
index ca9dc5ec..ba4b23ca 100644
--- a/internal/channels/feishu/bot.go
+++ b/internal/channels/feishu/bot.go
@@ -143,13 +143,18 @@ func (c *Channel) handleMessageEvent(ctx context.Context, event *MessageEvent) {
 		metadata["sender_open_id"] = sender.SenderID.OpenID
 	}
 
-	// Build final content with group context (pending history + sender annotation).
-	if mc.ChatType == "group" && senderName != "" {
-		annotated := fmt.Sprintf("[From: %s]\n%s", senderName, content)
-		if c.historyLimit > 0 {
-			content = c.groupHistory.BuildContext(chatID, annotated, c.historyLimit)
+	// Annotate content with sender identity so the agent knows who is messaging.
+	if senderName != "" {
+		if mc.ChatType == "group" {
+			annotated := fmt.Sprintf("[From: %s]\n%s", senderName, content)
+			if c.historyLimit > 0 {
+				content = c.groupHistory.BuildContext(chatID, annotated, c.historyLimit)
+			} else {
+				content = annotated
+			}
 		} else {
-			content = annotated
+			// DM: annotate with sender identity so the agent knows who is messaging.
+			content = fmt.Sprintf("[From: %s]\n%s", senderName, content)
 		}
 	}
 
diff --git a/ui/web/src/i18n/locales/en/channels.json b/ui/web/src/i18n/locales/en/channels.json
index dab90a19..0cd0d07a 100644
--- a/ui/web/src/i18n/locales/en/channels.json
+++ b/ui/web/src/i18n/locales/en/channels.json
@@ -278,6 +278,11 @@
       "formBanner": "After creating, you'll authenticate via QR code and configure allowed users."
     }
   },
+  "scopes": {
+    "title": "Required API Permissions",
+    "description": "Your Lark/Feishu app must have these scopes enabled in the Developer Console. Publish a new app version after adding permissions.",
+    "publishReminder": "After adding scopes, set Contact Range to \"All members\" and publish a new app version for changes to take effect."
+  },
   "toast": {
     "created": "Channel created",
     "createdDesc": "{{name}} has been added",
diff --git a/ui/web/src/i18n/locales/vi/channels.json b/ui/web/src/i18n/locales/vi/channels.json
index 765b99c8..42eedcb7 100644
--- a/ui/web/src/i18n/locales/vi/channels.json
+++ b/ui/web/src/i18n/locales/vi/channels.json
@@ -278,6 +278,11 @@
       "formBanner": "Sau khi tạo, bạn sẽ xác thực bằng mã QR và cấu hình người dùng được phép."
     }
   },
+  "scopes": {
+    "title": "Quyền API cần thiết",
+    "description": "Ứng dụng Lark/Feishu cần bật các scope này trong Developer Console. Publish phiên bản mới sau khi thêm quyền.",
+    "publishReminder": "Sau khi thêm scope, đặt Contact Range thành \"All members\" và publish phiên bản mới để thay đổi có hiệu lực."
+  },
   "toast": {
     "created": "Đã tạo channel",
     "createdDesc": "{{name}} đã được thêm",
diff --git a/ui/web/src/i18n/locales/zh/channels.json b/ui/web/src/i18n/locales/zh/channels.json
index 4af15557..360dbb6a 100644
--- a/ui/web/src/i18n/locales/zh/channels.json
+++ b/ui/web/src/i18n/locales/zh/channels.json
@@ -278,6 +278,11 @@
       "formBanner": "创建后，您将通过二维码进行认证并配置允许的用户。"
     }
   },
+  "scopes": {
+    "title": "所需API权限",
+    "description": "您的 Lark/飞书 应用需要在开发者控制台启用这些权限。添加权限后请发布新版本。",
+    "publishReminder": "添加权限后，将通讯录范围设置为「全部成员」，并发布新版本使更改生效。"
+  },
   "toast": {
     "created": "Channel已创建",
     "createdDesc": "{{name}} 已添加",
diff --git a/ui/web/src/pages/channels/channel-detail/channel-config-tab.tsx b/ui/web/src/pages/channels/channel-detail/channel-config-tab.tsx
index 3cd17bfa..0325eb28 100644
--- a/ui/web/src/pages/channels/channel-detail/channel-config-tab.tsx
+++ b/ui/web/src/pages/channels/channel-detail/channel-config-tab.tsx
@@ -5,6 +5,7 @@ import { Button } from "@/components/ui/button";
 import type { ChannelInstanceData } from "@/types/channel";
 import { configSchema } from "../channel-schemas";
 import { ChannelFields } from "../channel-fields";
+import { ChannelScopesInfo } from "../channel-scopes-info";
 
 interface ChannelConfigTabProps {
   instance: ChannelInstanceData;
@@ -85,6 +86,8 @@ export function ChannelConfigTab({ instance, onUpdate }: ChannelConfigTabProps)
         idPrefix="cd-cfg"
       />
 
+      <ChannelScopesInfo channelType={instance.channel_type} />
+
       {showWebhookUrl && (
         <div className="flex items-start gap-2 rounded-md border border-blue-200 bg-blue-50 px-3 py-2 text-sm dark:border-blue-800 dark:bg-blue-950">
           <Info className="h-4 w-4 shrink-0 mt-0.5 text-blue-600 dark:text-blue-400" />
diff --git a/ui/web/src/pages/channels/channel-instance-form-dialog.tsx b/ui/web/src/pages/channels/channel-instance-form-dialog.tsx
index e91abdf3..8c44ce7a 100644
--- a/ui/web/src/pages/channels/channel-instance-form-dialog.tsx
+++ b/ui/web/src/pages/channels/channel-instance-form-dialog.tsx
@@ -23,6 +23,7 @@ import type { AgentData } from "@/types/agent";
 import { slugify, isValidSlug } from "@/lib/slug";
 import { credentialsSchema, configSchema, wizardConfig, type FieldDef } from "./channel-schemas";
 import { ChannelFields } from "./channel-fields";
+import { ChannelScopesInfo } from "./channel-scopes-info";
 import { wizardAuthSteps, wizardConfigSteps, wizardEditConfigs } from "./channel-wizard-registry";
 import { TelegramGroupOverrides } from "./telegram-group-overrides";
 import { CHANNEL_TYPES } from "@/constants/channels";
@@ -307,6 +308,8 @@ export function ChannelInstanceFormDialog({
                 </fieldset>
               )}
 
+              <ChannelScopesInfo channelType={channelType} />
+
               {/* Auth status indicator (edit mode, channels with auth wizard step) */}
               {instance && wizard?.steps.includes("auth") && (
                 <div className="rounded-md border border-blue-200 bg-blue-50 dark:border-blue-900 dark:bg-blue-950 p-3">
diff --git a/ui/web/src/pages/channels/channel-schemas.ts b/ui/web/src/pages/channels/channel-schemas.ts
index 045353be..6bba6521 100644
--- a/ui/web/src/pages/channels/channel-schemas.ts
+++ b/ui/web/src/pages/channels/channel-schemas.ts
@@ -163,6 +163,34 @@ export const groupOverrideSchema: FieldDef[] = [
   { key: "system_prompt", label: "System Prompt", type: "textarea", placeholder: "Additional system prompt for this group..." },
 ];
 
+// --- Required API scopes per channel type ---
+// Displayed as a help reference when creating/configuring a channel.
+
+export interface ScopeEntry {
+  scope: string;
+  note?: string; // e.g. "Range: All members"
+}
+
+export const requiredScopes: Partial<Record<string, ScopeEntry[]>> = {
+  feishu: [
+    { scope: "application:application:self_manage" },
+    { scope: "application:bot.menu:write" },
+    { scope: "cardkit:card:read" },
+    { scope: "cardkit:card:write" },
+    { scope: "contact:contact.base:readonly", note: "Range: All members" },
+    { scope: "contact:user.base:readonly", note: "Range: All members" },
+    { scope: "contact:user.employee_id:readonly", note: "Range: All members" },
+    { scope: "event:ip_list" },
+    { scope: "im:chat.members:bot_access" },
+    { scope: "im:message" },
+    { scope: "im:message.group_at_msg:readonly" },
+    { scope: "im:message.p2p_msg:readonly" },
+    { scope: "im:message:readonly" },
+    { scope: "im:message:send_as_bot" },
+    { scope: "im:resource" },
+  ],
+};
+
 // --- Post-create wizard configuration ---
 // Channels with multi-step create flows (e.g. auth then config).
 // Channels not listed here use the default single-step create.
diff --git a/ui/web/src/pages/channels/channel-scopes-info.tsx b/ui/web/src/pages/channels/channel-scopes-info.tsx
new file mode 100644
index 00000000..8ad5f244
--- /dev/null
+++ b/ui/web/src/pages/channels/channel-scopes-info.tsx
@@ -0,0 +1,54 @@
+import { useState } from "react";
+import { useTranslation } from "react-i18next";
+import { ChevronDown, ChevronRight, Shield } from "lucide-react";
+import { requiredScopes } from "./channel-schemas";
+
+interface ChannelScopesInfoProps {
+  channelType: string;
+}
+
+export function ChannelScopesInfo({ channelType }: ChannelScopesInfoProps) {
+  const { t } = useTranslation("channels");
+  const scopes = requiredScopes[channelType];
+  const [expanded, setExpanded] = useState(false);
+
+  if (!scopes || scopes.length === 0) return null;
+
+  return (
+    <div className="rounded-md border border-amber-200 bg-amber-50 dark:border-amber-900 dark:bg-amber-950 text-sm">
+      <button
+        type="button"
+        onClick={() => setExpanded(!expanded)}
+        className="flex items-center gap-2 w-full px-3 py-2 text-left text-amber-800 dark:text-amber-200 hover:bg-amber-100 dark:hover:bg-amber-900 rounded-md transition-colors"
+      >
+        <Shield className="h-4 w-4 shrink-0" />
+        <span className="flex-1 font-medium">{t("scopes.title")}</span>
+        {expanded
+          ? <ChevronDown className="h-4 w-4 shrink-0" />
+          : <ChevronRight className="h-4 w-4 shrink-0" />}
+      </button>
+      {expanded && (
+        <div className="px-3 pb-3 space-y-2">
+          <p className="text-xs text-amber-700 dark:text-amber-300">
+            {t("scopes.description")}
+          </p>
+          <div className="space-y-0.5">
+            {scopes.map((s) => (
+              <div key={s.scope} className="flex items-baseline gap-2 text-xs font-mono">
+                <code className="text-amber-900 dark:text-amber-100">{s.scope}</code>
+                {s.note && (
+                  <span className="text-amber-600 dark:text-amber-400 font-sans text-[11px]">
+                    — {s.note}
+                  </span>
+                )}
+              </div>
+            ))}
+          </div>
+          <p className="text-xs text-amber-600 dark:text-amber-400 pt-1">
+            {t("scopes.publishReminder")}
+          </p>
+        </div>
+      )}
+    </div>
+  );
+}