diff --git a/src/features/authFiles/components/AuthFileCard.tsx b/src/features/authFiles/components/AuthFileCard.tsx
index 20aaae7..5cd01fa 100644
--- a/src/features/authFiles/components/AuthFileCard.tsx
+++ b/src/features/authFiles/components/AuthFileCard.tsx
@@ -112,6 +112,7 @@ export function AuthFileCard(props: AuthFileCardProps) {
     Boolean(rawStatusMessage) && !HEALTHY_STATUS_MESSAGES.has(rawStatusMessage.toLowerCase());
 
   const priorityValue = parsePriorityValue(file.priority ?? file['priority']);
+  const noteValue = typeof file.note === 'string' ? file.note.trim() : '';
 
   return (
     <div
@@ -161,6 +162,13 @@ export function AuthFileCard(props: AuthFileCardProps) {
             )}
           </div>
 
+          {noteValue && (
+            <div className={styles.noteText} title={noteValue}>
+              <span className={styles.noteLabel}>{t('auth_files.note_display')}: </span>
+              {noteValue}
+            </div>
+          )}
+
           {rawStatusMessage && hasStatusWarning && (
             <div className={styles.healthStatusMessage} title={rawStatusMessage}>
               {rawStatusMessage}
diff --git a/src/features/authFiles/components/AuthFilesPrefixProxyEditorModal.tsx b/src/features/authFiles/components/AuthFilesPrefixProxyEditorModal.tsx
index 1cc6b03..4e7b25a 100644
--- a/src/features/authFiles/components/AuthFilesPrefixProxyEditorModal.tsx
+++ b/src/features/authFiles/components/AuthFilesPrefixProxyEditorModal.tsx
@@ -114,6 +114,14 @@ export function AuthFilesPrefixProxyEditorModal(props: AuthFilesPrefixProxyEdito
                   disabled={disableControls || editor.saving || !editor.json}
                   onChange={(e) => onChange('disableCooling', e.target.value)}
                 />
+                <Input
+                  label={t('auth_files.note_label')}
+                  value={editor.note}
+                  placeholder={t('auth_files.note_placeholder')}
+                  hint={t('auth_files.note_hint')}
+                  disabled={disableControls || editor.saving || !editor.json}
+                  onChange={(e) => onChange('note', e.target.value)}
+                />
                 {editor.isCodexFile && (
                   <div className="form-group">
                     <label>{t('ai_providers.codex_websockets_label')}</label>
diff --git a/src/features/authFiles/hooks/useAuthFilesPrefixProxyEditor.ts b/src/features/authFiles/hooks/useAuthFilesPrefixProxyEditor.ts
index e99c534..7591483 100644
--- a/src/features/authFiles/hooks/useAuthFilesPrefixProxyEditor.ts
+++ b/src/features/authFiles/hooks/useAuthFilesPrefixProxyEditor.ts
@@ -18,7 +18,8 @@ export type PrefixProxyEditorField =
   | 'priority'
   | 'excludedModelsText'
   | 'disableCooling'
-  | 'websocket';
+  | 'websocket'
+  | 'note';
 
 export type PrefixProxyEditorFieldValue = string | boolean;
 
@@ -37,6 +38,7 @@ export type PrefixProxyEditorState = {
   excludedModelsText: string;
   disableCooling: string;
   websocket: boolean;
+  note: string;
 };
 
 export type UseAuthFilesPrefixProxyEditorOptions = {
@@ -93,6 +95,13 @@ const buildPrefixProxyUpdatedText = (editor: PrefixProxyEditorState | null): str
     next.websocket = editor.websocket;
   }
 
+  const noteValue = editor.note.trim();
+  if (noteValue) {
+    next.note = noteValue;
+  } else if ('note' in next) {
+    delete next.note;
+  }
+
   return JSON.stringify(next);
 };
 
@@ -146,6 +155,7 @@ export function useAuthFilesPrefixProxyEditor(
       excludedModelsText: '',
       disableCooling: '',
       websocket: false,
+      note: '',
     });
 
     try {
@@ -195,6 +205,7 @@ export function useAuthFilesPrefixProxyEditor(
       const excludedModels = normalizeExcludedModels(json.excluded_models);
       const disableCoolingValue = parseDisableCoolingValue(json.disable_cooling);
       const websocketValue = parseDisableCoolingValue(json.websocket);
+      const note = typeof json.note === 'string' ? json.note : '';
 
       setPrefixProxyEditor((prev) => {
         if (!prev || prev.fileName !== name) return prev;
@@ -211,6 +222,7 @@ export function useAuthFilesPrefixProxyEditor(
           disableCooling:
             disableCoolingValue === undefined ? '' : disableCoolingValue ? 'true' : 'false',
           websocket: websocketValue ?? false,
+          note,
           error: null,
         };
       });
@@ -235,6 +247,7 @@ export function useAuthFilesPrefixProxyEditor(
       if (field === 'priority') return { ...prev, priority: String(value) };
       if (field === 'excludedModelsText') return { ...prev, excludedModelsText: String(value) };
       if (field === 'disableCooling') return { ...prev, disableCooling: String(value) };
+      if (field === 'note') return { ...prev, note: String(value) };
       return { ...prev, websocket: Boolean(value) };
     });
   };
diff --git a/src/i18n/locales/en.json b/src/i18n/locales/en.json
index af92324..9449cef 100644
--- a/src/i18n/locales/en.json
+++ b/src/i18n/locales/en.json
@@ -569,6 +569,10 @@
     "disable_cooling_label": "Disable cooling (disable_cooling)",
     "disable_cooling_placeholder": "e.g. true / false / 1 / 0",
     "disable_cooling_hint": "Supports booleans, numeric 0/non-0, and strings like true/false/1/0; unparseable values are ignored.",
+    "note_label": "Note",
+    "note_placeholder": "Enter a note, e.g.: John's account",
+    "note_hint": "Optional. Used to describe the purpose or owner of this credential; leave empty to omit.",
+    "note_display": "Note",
     "prefix_proxy_invalid_json": "This auth file is not a JSON object, so fields cannot be edited.",
     "prefix_proxy_saved_success": "Updated auth file \"{{name}}\" successfully",
     "quota_refresh_success": "Quota refreshed for \"{{name}}\"",
diff --git a/src/i18n/locales/ru.json b/src/i18n/locales/ru.json
index c9a2564..7a3ff74 100644
--- a/src/i18n/locales/ru.json
+++ b/src/i18n/locales/ru.json
@@ -569,6 +569,10 @@
     "disable_cooling_label": "Отключение охлаждения (disable_cooling)",
     "disable_cooling_placeholder": "например: true / false / 1 / 0",
     "disable_cooling_hint": "Поддерживает boolean, числа 0/не 0 и строки true/false/1/0; непарсируемые значения игнорируются.",
+    "note_label": "Заметка (note)",
+    "note_placeholder": "Введите заметку, например: аккаунт Ивана",
+    "note_hint": "Необязательно. Используется для описания назначения или владельца учётных данных; оставьте пустым, чтобы не записывать.",
+    "note_display": "Заметка",
     "prefix_proxy_invalid_json": "Этот файл авторизации не является JSON-объектом, поэтому поля нельзя редактировать.",
     "prefix_proxy_saved_success": "Файл авторизации \"{{name}}\" успешно обновлён",
     "card_tools_title": "Инструменты",
diff --git a/src/i18n/locales/zh-CN.json b/src/i18n/locales/zh-CN.json
index 729134b..0b3c0b1 100644
--- a/src/i18n/locales/zh-CN.json
+++ b/src/i18n/locales/zh-CN.json
@@ -569,6 +569,10 @@
     "disable_cooling_label": "禁用冷却（disable_cooling）",
     "disable_cooling_placeholder": "例如: true / false / 1 / 0",
     "disable_cooling_hint": "支持布尔值、0/非0 数字或字符串 true/false/1/0；无法解析时忽略。",
+    "note_label": "备注（note）",
+    "note_placeholder": "输入备注信息，例如：张三的账号",
+    "note_hint": "可选，用于标记凭证用途或归属；留空则不写入。",
+    "note_display": "备注",
     "prefix_proxy_invalid_json": "该认证文件不是 JSON 对象，无法编辑字段。",
     "prefix_proxy_saved_success": "已更新认证文件 \"{{name}}\"",
     "quota_refresh_success": "已刷新 \"{{name}}\" 的额度",
diff --git a/src/pages/AuthFilesPage.module.scss b/src/pages/AuthFilesPage.module.scss
index b446c31..2c48487 100644
--- a/src/pages/AuthFilesPage.module.scss
+++ b/src/pages/AuthFilesPage.module.scss
@@ -646,6 +646,21 @@
   }
 }
 
+.noteText {
+  font-size: 12px;
+  color: var(--text-secondary);
+  line-height: 1.4;
+  overflow: hidden;
+  display: -webkit-box;
+  -webkit-line-clamp: 2;
+  -webkit-box-orient: vertical;
+  word-break: break-word;
+
+  .noteLabel {
+    color: var(--text-tertiary);
+  }
+}
+
 .sortSelect {
   padding: 8px 12px;
   border: 1px solid var(--border-color);