diff --git a/frontend/src/components/account/OAuthAuthorizationFlow.vue b/frontend/src/components/account/OAuthAuthorizationFlow.vue
index a23ec798d..395b4ae92 100644
--- a/frontend/src/components/account/OAuthAuthorizationFlow.vue
+++ b/frontend/src/components/account/OAuthAuthorizationFlow.vue
@@ -276,7 +276,7 @@
           </div>
         </div>
 
-        <!-- Codex OAuth/session JSON batch import -->
+        <!-- Codex auth.json / session credential batch import -->
         <div v-if="inputMethod === 'codex_session'" class="space-y-4">
           <div
             class="rounded-lg border border-blue-300 bg-white/80 p-4 dark:border-blue-600 dark:bg-gray-800/80"
diff --git a/frontend/src/components/common/PlatformTypeBadge.vue b/frontend/src/components/common/PlatformTypeBadge.vue
index dbcc54fce..1e664d51b 100644
--- a/frontend/src/components/common/PlatformTypeBadge.vue
+++ b/frontend/src/components/common/PlatformTypeBadge.vue
@@ -77,6 +77,7 @@ const { t } = useI18n()
 interface Props {
   platform: AccountPlatform
   type: AccountType
+  authMode?: string
   planType?: string
   privacyMode?: string
   subscriptionExpiresAt?: string
@@ -92,7 +93,15 @@ const platformLabel = computed(() => {
   return 'Gemini'
 })
 
+const normalizedAuthMode = computed(() =>
+  (props.authMode || '').trim().toLowerCase().replace(/[\s_-]+/g, '')
+)
+
 const typeLabel = computed(() => {
+  if (props.platform === 'openai' && props.type === 'oauth') {
+    if (normalizedAuthMode.value === 'agentidentity') return 'Agent Identity'
+    if (normalizedAuthMode.value === 'personalaccesstoken') return 'PAT'
+  }
   switch (props.type) {
     case 'oauth':
       return 'OAuth'
diff --git a/frontend/src/components/common/__tests__/PlatformTypeBadge.grok.spec.ts b/frontend/src/components/common/__tests__/PlatformTypeBadge.grok.spec.ts
index 753fb1a5f..0bad3d955 100644
--- a/frontend/src/components/common/__tests__/PlatformTypeBadge.grok.spec.ts
+++ b/frontend/src/components/common/__tests__/PlatformTypeBadge.grok.spec.ts
@@ -62,3 +62,24 @@ describe('PlatformTypeBadge Grok plans', () => {
     expect(wrapper.findAll('path')).toHaveLength(2)
   })
 })
+
+describe('PlatformTypeBadge OpenAI authentication modes', () => {
+  it('distinguishes Agent Identity, PAT, and OAuth accounts', async () => {
+    const wrapper = mount(PlatformTypeBadge, {
+      props: {
+        platform: 'openai',
+        type: 'oauth',
+        authMode: 'agentIdentity',
+      },
+    })
+
+    expect(wrapper.text()).toContain('Agent Identity')
+
+    await wrapper.setProps({ authMode: 'personalAccessToken' })
+    expect(wrapper.text()).toContain('PAT')
+    expect(wrapper.text()).not.toContain('Agent Identity')
+
+    await wrapper.setProps({ authMode: undefined })
+    expect(wrapper.text()).toContain('OAuth')
+  })
+})
diff --git a/frontend/src/i18n/locales/en/admin/accounts.ts b/frontend/src/i18n/locales/en/admin/accounts.ts
index e64a51ea2..64a86dad1 100644
--- a/frontend/src/i18n/locales/en/admin/accounts.ts
+++ b/frontend/src/i18n/locales/en/admin/accounts.ts
@@ -822,13 +822,13 @@ export default {
           refreshTokenAuth: 'Manual RT Input',
           refreshTokenDesc: 'Enter your existing OpenAI Refresh Token(s). Supports batch input (one per line). The system will automatically validate and create accounts.',
           refreshTokenPlaceholder: 'Paste your OpenAI Refresh Token...\nSupports multiple, one per line',
-          codexSessionAuth: 'Codex JSON / AT Batch Input',
-          codexSessionDesc: 'Paste Codex JSON or an accessToken. Accounts use the step 1 settings.',
-          codexSessionInputLabel: 'Codex JSON or accessToken',
-          codexSessionPlaceholder: 'Multiple lines supported, one token or JSON per line',
-          codexSessionHint: 'sessionToken will not be saved as refresh_token. Without refresh_token, the account expires with the accessToken expiry; import is rejected if the expiry cannot be parsed and step 1 has no expiration.',
+          codexSessionAuth: 'Codex auth.json / AT Import',
+          codexSessionDesc: 'Paste a Codex auth.json (OAuth or Agent Identity) or an accessToken. Accounts use the step 1 settings.',
+          codexSessionInputLabel: 'Codex auth.json or accessToken',
+          codexSessionPlaceholder: 'Multiple lines supported, one token or auth.json object per line',
+          codexSessionHint: 'Agent Identity keeps no OAuth token and signs each upstream request dynamically. Session/access-token imports retain their existing expiration behavior.',
           codexSessionImportAndCreate: 'Import & Create Account',
-          codexSessionEmpty: 'Please enter Codex JSON or accessToken',
+          codexSessionEmpty: 'Please enter a Codex auth.json or accessToken',
           codexSessionImportFailed: 'Failed to import Codex account',
           codexSessionImportSuccess: 'Import completed: created {created}, updated {updated}, skipped {skipped}',
           codexSessionImportPartial: 'Partial success: created {created}, updated {updated}, skipped {skipped}, failed {failed}',
diff --git a/frontend/src/i18n/locales/zh/admin/accounts.ts b/frontend/src/i18n/locales/zh/admin/accounts.ts
index 49d4b8564..65fb089ac 100644
--- a/frontend/src/i18n/locales/zh/admin/accounts.ts
+++ b/frontend/src/i18n/locales/zh/admin/accounts.ts
@@ -909,13 +909,13 @@ export default {
           refreshTokenAuth: '手动输入 RT',
           refreshTokenDesc: '输入您已有的 OpenAI Refresh Token，支持批量输入（每行一个），系统将自动验证并创建账号。',
           refreshTokenPlaceholder: '粘贴您的 OpenAI Refresh Token...\n支持多个，每行一个',
-          codexSessionAuth: 'Codex JSON / AT 批量输入',
-          codexSessionDesc: '粘贴 Codex JSON 或 accessToken，按第一步配置创建账号。',
-          codexSessionInputLabel: 'Codex JSON 或 accessToken',
-          codexSessionPlaceholder: '支持多行，每行一个 token 或 JSON',
-          codexSessionHint: 'sessionToken 不会作为 refresh_token 保存；未包含 refresh_token 时会按 accessToken 过期时间设置账号过期，无法解析且第一步未设置过期时间时会拒绝导入。',
+          codexSessionAuth: 'Codex auth.json / AT 导入',
+          codexSessionDesc: '粘贴 Codex auth.json（OAuth 或 Agent Identity）或 accessToken，按第一步配置创建账号。',
+          codexSessionInputLabel: 'Codex auth.json 或 accessToken',
+          codexSessionPlaceholder: '支持多行，每行一个 token 或 auth.json 对象',
+          codexSessionHint: 'Agent Identity 不保存 OAuth token，并为每次上游请求动态签名；session/accessToken 导入继续沿用原有过期规则。',
           codexSessionImportAndCreate: '导入并创建账号',
-          codexSessionEmpty: '请输入 Codex JSON 或 accessToken',
+          codexSessionEmpty: '请输入 Codex auth.json 或 accessToken',
           codexSessionImportFailed: 'Codex 账号导入失败',
           codexSessionImportSuccess: '导入完成：新增 {created}，更新 {updated}，跳过 {skipped}',
           codexSessionImportPartial: '部分成功：新增 {created}，更新 {updated}，跳过 {skipped}，失败 {failed}',
diff --git a/frontend/src/views/admin/AccountsView.vue b/frontend/src/views/admin/AccountsView.vue
index e8bac39af..140b7c934 100644
--- a/frontend/src/views/admin/AccountsView.vue
+++ b/frontend/src/views/admin/AccountsView.vue
@@ -234,6 +234,7 @@
             <div class="flex min-w-0 flex-col gap-1">
               <div class="flex flex-wrap items-center gap-1">
                 <PlatformTypeBadge :platform="row.platform" :type="row.type"
+                  :auth-mode="getOpenAIAuthMode(row)"
                   :plan-type="getAccountPlanType(row)"
                   :privacy-mode="row.extra?.privacy_mode || row.parent_privacy_mode"
                   :subscription-expires-at="row.credentials?.subscription_expires_at || row.parent_subscription_expires_at" />
@@ -1167,6 +1168,12 @@ function getAccountPlanType(row: any): string | undefined {
   return row.credentials?.plan_type || row.parent_plan_type || undefined
 }
 
+function getOpenAIAuthMode(row: any): string | undefined {
+  if (!row || row.platform !== 'openai' || row.type !== 'oauth') return undefined
+  const authMode = row.credentials?.auth_mode
+  return typeof authMode === 'string' && authMode.trim() ? authMode : undefined
+}
+
 // Antigravity 订阅等级辅助函数
 function getAntigravityTierFromRow(row: any): string | null {
   if (row.platform !== 'antigravity') return null