diff --git a/frontend/src/components/keys/UseKeyModal.vue b/frontend/src/components/keys/UseKeyModal.vue
index 9414523d..7db67b96 100644
--- a/frontend/src/components/keys/UseKeyModal.vue
+++ b/frontend/src/components/keys/UseKeyModal.vue
@@ -28,7 +28,29 @@
           {{ platformDescription }}
         </p>
 
-        <!-- OS Tabs -->
+        <!-- Client Tabs (only for Antigravity platform) -->
+        <div v-if="platform === 'antigravity'" class="border-b border-gray-200 dark:border-dark-700">
+          <nav class="-mb-px flex space-x-6" aria-label="Client">
+            <button
+              v-for="tab in clientTabs"
+              :key="tab.id"
+              @click="activeClientTab = tab.id"
+              :class="[
+                'whitespace-nowrap py-2.5 px-1 border-b-2 font-medium text-sm transition-colors',
+                activeClientTab === tab.id
+                  ? 'border-primary-500 text-primary-600 dark:text-primary-400'
+                  : 'border-transparent text-gray-500 hover:text-gray-700 hover:border-gray-300 dark:text-gray-400 dark:hover:text-gray-300'
+              ]"
+            >
+              <span class="flex items-center gap-2">
+                <component :is="tab.icon" class="w-4 h-4" />
+                {{ tab.label }}
+              </span>
+            </button>
+          </nav>
+        </div>
+
+        <!-- OS/Shell Tabs -->
         <div class="border-b border-gray-200 dark:border-dark-700">
           <nav class="-mb-px flex space-x-4" aria-label="Tabs">
             <button
@@ -154,16 +176,21 @@ const { copyToClipboard: clipboardCopy } = useClipboard()
 
 const copiedIndex = ref<number | null>(null)
 const activeTab = ref<string>('unix')
+const activeClientTab = ref<string>('claude')  // Level 1 tab for antigravity platform
 
-// Reset active tab when platform changes
+// Reset tabs when platform changes
 watch(() => props.platform, (newPlatform) => {
-  if (newPlatform === 'openai') {
-    activeTab.value = 'unix'
-  } else {
-    activeTab.value = 'unix'
+  activeTab.value = 'unix'
+  if (newPlatform === 'antigravity') {
+    activeClientTab.value = 'claude'
   }
 })
 
+// Reset shell tab when client changes (for antigravity)
+watch(activeClientTab, () => {
+  activeTab.value = 'unix'
+})
+
 // Icon components
 const AppleIcon = {
   render() {
@@ -189,8 +216,52 @@ const WindowsIcon = {
   }
 }
 
-// Anthropic tabs (3 shell types)
-const anthropicTabs: TabConfig[] = [
+// Terminal icon for Claude Code
+const TerminalIcon = {
+  render() {
+    return h('svg', {
+      fill: 'none',
+      stroke: 'currentColor',
+      viewBox: '0 0 24 24',
+      'stroke-width': '1.5',
+      class: 'w-4 h-4'
+    }, [
+      h('path', {
+        'stroke-linecap': 'round',
+        'stroke-linejoin': 'round',
+        d: 'm6.75 7.5 3 2.25-3 2.25m4.5 0h3m-9 8.25h13.5A2.25 2.25 0 0 0 21 17.25V6.75A2.25 2.25 0 0 0 18.75 4.5H5.25A2.25 2.25 0 0 0 3 6.75v10.5A2.25 2.25 0 0 0 5.25 20.25Z'
+      })
+    ])
+  }
+}
+
+// Sparkle icon for Gemini
+const SparkleIcon = {
+  render() {
+    return h('svg', {
+      fill: 'none',
+      stroke: 'currentColor',
+      viewBox: '0 0 24 24',
+      'stroke-width': '1.5',
+      class: 'w-4 h-4'
+    }, [
+      h('path', {
+        'stroke-linecap': 'round',
+        'stroke-linejoin': 'round',
+        d: 'M9.813 15.904 9 18.75l-.813-2.846a4.5 4.5 0 0 0-3.09-3.09L2.25 12l2.846-.813a4.5 4.5 0 0 0 3.09-3.09L9 5.25l.813 2.846a4.5 4.5 0 0 0 3.09 3.09L15.75 12l-2.846.813a4.5 4.5 0 0 0-3.09 3.09ZM18.259 8.715 18 9.75l-.259-1.035a3.375 3.375 0 0 0-2.455-2.456L14.25 6l1.036-.259a3.375 3.375 0 0 0 2.455-2.456L18 2.25l.259 1.035a3.375 3.375 0 0 0 2.456 2.456L21.75 6l-1.035.259a3.375 3.375 0 0 0-2.456 2.456ZM16.894 20.567 16.5 21.75l-.394-1.183a2.25 2.25 0 0 0-1.423-1.423L13.5 18.75l1.183-.394a2.25 2.25 0 0 0 1.423-1.423l.394-1.183.394 1.183a2.25 2.25 0 0 0 1.423 1.423l1.183.394-1.183.394a2.25 2.25 0 0 0-1.423 1.423Z'
+      })
+    ])
+  }
+}
+
+// Client tabs for Antigravity platform (Level 1)
+const clientTabs = computed((): TabConfig[] => [
+  { id: 'claude', label: t('keys.useKeyModal.antigravity.claudeCode'), icon: TerminalIcon },
+  { id: 'gemini', label: t('keys.useKeyModal.antigravity.geminiCli'), icon: SparkleIcon }
+])
+
+// Shell tabs (3 types for environment variable based configs)
+const shellTabs: TabConfig[] = [
   { id: 'unix', label: 'macOS / Linux', icon: AppleIcon },
   { id: 'cmd', label: 'Windows CMD', icon: WindowsIcon },
   { id: 'powershell', label: 'PowerShell', icon: WindowsIcon }
@@ -204,26 +275,40 @@ const openaiTabs: TabConfig[] = [
 
 const currentTabs = computed(() => {
   if (props.platform === 'openai') {
-    return openaiTabs
+    return openaiTabs  // 2 tabs: unix, windows
   }
-  return anthropicTabs
+  // All other platforms (anthropic, gemini, antigravity) use shell tabs
+  return shellTabs
 })
 
 const platformDescription = computed(() => {
-  if (props.platform === 'openai') {
-    return t('keys.useKeyModal.openai.description')
+  switch (props.platform) {
+    case 'openai':
+      return t('keys.useKeyModal.openai.description')
+    case 'gemini':
+      return t('keys.useKeyModal.gemini.description')
+    case 'antigravity':
+      return t('keys.useKeyModal.antigravity.description')
+    default:
+      return t('keys.useKeyModal.description')
   }
-  return t('keys.useKeyModal.description')
 })
 
 const platformNote = computed(() => {
-  if (props.platform === 'openai') {
-    if (activeTab.value === 'windows') {
-      return t('keys.useKeyModal.openai.noteWindows')
-    }
-    return t('keys.useKeyModal.openai.note')
+  switch (props.platform) {
+    case 'openai':
+      return activeTab.value === 'windows'
+        ? t('keys.useKeyModal.openai.noteWindows')
+        : t('keys.useKeyModal.openai.note')
+    case 'gemini':
+      return t('keys.useKeyModal.gemini.note')
+    case 'antigravity':
+      return activeClientTab.value === 'claude'
+        ? t('keys.useKeyModal.antigravity.claudeNote')
+        : t('keys.useKeyModal.antigravity.geminiNote')
+    default:
+      return t('keys.useKeyModal.note')
   }
-  return t('keys.useKeyModal.note')
 })
 
 // Syntax highlighting helpers
@@ -239,11 +324,20 @@ const currentFiles = computed((): FileConfig[] => {
   const baseUrl = props.baseUrl || window.location.origin
   const apiKey = props.apiKey
 
-  if (props.platform === 'openai') {
-    return generateOpenAIFiles(baseUrl, apiKey)
+  switch (props.platform) {
+    case 'openai':
+      return generateOpenAIFiles(baseUrl, apiKey)
+    case 'gemini':
+      return [generateGeminiCliContent(baseUrl, apiKey)]
+    case 'antigravity':
+      // Both Claude Code and Gemini CLI need /antigravity suffix for antigravity platform
+      if (activeClientTab.value === 'claude') {
+        return generateAnthropicFiles(`${baseUrl}/antigravity`, apiKey)
+      }
+      return [generateGeminiCliContent(`${baseUrl}/antigravity`, apiKey)]
+    default: // anthropic
+      return generateAnthropicFiles(baseUrl, apiKey)
   }
-
-  return generateAnthropicFiles(baseUrl, apiKey)
 })
 
 function generateAnthropicFiles(baseUrl: string, apiKey: string): FileConfig[] {
@@ -282,6 +376,51 @@ ${keyword('$env:')}${variable('ANTHROPIC_AUTH_TOKEN')}${operator('=')}${string(`
   return [{ path, content, highlighted }]
 }
 
+function generateGeminiCliContent(baseUrl: string, apiKey: string): FileConfig {
+  const model = 'gemini-2.5-pro'
+  const modelComment = t('keys.useKeyModal.gemini.modelComment')
+  let path: string
+  let content: string
+  let highlighted: string
+
+  switch (activeTab.value) {
+    case 'unix':
+      path = 'Terminal'
+      content = `export GOOGLE_GEMINI_BASE_URL="${baseUrl}"
+export GEMINI_API_KEY="${apiKey}"
+export GEMINI_MODEL="${model}"  # ${modelComment}`
+      highlighted = `${keyword('export')} ${variable('GOOGLE_GEMINI_BASE_URL')}${operator('=')}${string(`"${baseUrl}"`)}
+${keyword('export')} ${variable('GEMINI_API_KEY')}${operator('=')}${string(`"${apiKey}"`)}
+${keyword('export')} ${variable('GEMINI_MODEL')}${operator('=')}${string(`"${model}"`)}  ${comment(`# ${modelComment}`)}`
+      break
+    case 'cmd':
+      path = 'Command Prompt'
+      content = `set GOOGLE_GEMINI_BASE_URL=${baseUrl}
+set GEMINI_API_KEY=${apiKey}
+set GEMINI_MODEL=${model}`
+      highlighted = `${keyword('set')} ${variable('GOOGLE_GEMINI_BASE_URL')}${operator('=')}${baseUrl}
+${keyword('set')} ${variable('GEMINI_API_KEY')}${operator('=')}${apiKey}
+${keyword('set')} ${variable('GEMINI_MODEL')}${operator('=')}${model}
+${comment(`REM ${modelComment}`)}`
+      break
+    case 'powershell':
+      path = 'PowerShell'
+      content = `$env:GOOGLE_GEMINI_BASE_URL="${baseUrl}"
+$env:GEMINI_API_KEY="${apiKey}"
+$env:GEMINI_MODEL="${model}"  # ${modelComment}`
+      highlighted = `${keyword('$env:')}${variable('GOOGLE_GEMINI_BASE_URL')}${operator('=')}${string(`"${baseUrl}"`)}
+${keyword('$env:')}${variable('GEMINI_API_KEY')}${operator('=')}${string(`"${apiKey}"`)}
+${keyword('$env:')}${variable('GEMINI_MODEL')}${operator('=')}${string(`"${model}"`)}  ${comment(`# ${modelComment}`)}`
+      break
+    default:
+      path = 'Terminal'
+      content = ''
+      highlighted = ''
+  }
+
+  return { path, content, highlighted }
+}
+
 function generateOpenAIFiles(baseUrl: string, apiKey: string): FileConfig[] {
   const isWindows = activeTab.value === 'windows'
   const configDir = isWindows ? '%userprofile%\\.codex' : '~/.codex'
diff --git a/frontend/src/i18n/locales/en.ts b/frontend/src/i18n/locales/en.ts
index f171565a..ea01914e 100644
--- a/frontend/src/i18n/locales/en.ts
+++ b/frontend/src/i18n/locales/en.ts
@@ -321,6 +321,18 @@ export default {
         note: 'Make sure the config directory exists. macOS/Linux users can run mkdir -p ~/.codex to create it.',
         noteWindows: 'Press Win+R and enter %userprofile%\\.codex to open the config directory. Create it manually if it does not exist.',
       },
+      antigravity: {
+        description: 'Configure API access for Antigravity group. Select the configuration method based on your client.',
+        claudeCode: 'Claude Code',
+        geminiCli: 'Gemini CLI',
+        claudeNote: 'These environment variables will be active in the current terminal session. For permanent configuration, add them to ~/.bashrc, ~/.zshrc, or the appropriate configuration file.',
+        geminiNote: 'These environment variables will be active in the current terminal session. For permanent configuration, add them to ~/.bashrc, ~/.zshrc, or the appropriate configuration file.',
+      },
+      gemini: {
+        description: 'Add the following environment variables to your terminal profile or run directly in terminal to configure Gemini CLI access.',
+        modelComment: 'If you have Gemini 3 access, you can use: gemini-3-pro-preview',
+        note: 'These environment variables will be active in the current terminal session. For permanent configuration, add them to ~/.bashrc, ~/.zshrc, or the appropriate configuration file.',
+      },
     },
     customKeyLabel: 'Custom Key',
     customKeyPlaceholder: 'Enter your custom key (min 16 chars)',
@@ -328,7 +340,15 @@ export default {
     customKeyTooShort: 'Custom key must be at least 16 characters',
     customKeyInvalidChars: 'Custom key can only contain letters, numbers, underscores, and hyphens',
     customKeyRequired: 'Please enter a custom key',
-    ccSwitchNotInstalled: 'CC-Switch is not installed or the protocol handler is not registered. Please install CC-Switch first or manually copy the API key.'
+    ccSwitchNotInstalled: 'CC-Switch is not installed or the protocol handler is not registered. Please install CC-Switch first or manually copy the API key.',
+    ccsClientSelect: {
+      title: 'Select Client',
+      description: 'Please select the client type to import to CC-Switch:',
+      claudeCode: 'Claude Code',
+      claudeCodeDesc: 'Import as Claude Code configuration',
+      geminiCli: 'Gemini CLI',
+      geminiCliDesc: 'Import as Gemini CLI configuration',
+    },
   },
 
   // Usage
diff --git a/frontend/src/i18n/locales/zh.ts b/frontend/src/i18n/locales/zh.ts
index 45fb5a72..199dbd71 100644
--- a/frontend/src/i18n/locales/zh.ts
+++ b/frontend/src/i18n/locales/zh.ts
@@ -317,6 +317,18 @@ export default {
         note: '请确保配置目录存在。macOS/Linux 用户可运行 mkdir -p ~/.codex 创建目录。',
         noteWindows: '按 Win+R，输入 %userprofile%\\.codex 打开配置目录。如目录不存在，请先手动创建。',
       },
+      antigravity: {
+        description: '为 Antigravity 分组配置 API 访问。请根据您使用的客户端选择对应的配置方式。',
+        claudeCode: 'Claude Code',
+        geminiCli: 'Gemini CLI',
+        claudeNote: '这些环境变量将在当前终端会话中生效。如需永久配置，请将其添加到 ~/.bashrc、~/.zshrc 或相应的配置文件中。',
+        geminiNote: '这些环境变量将在当前终端会话中生效。如需永久配置，请将其添加到 ~/.bashrc、~/.zshrc 或相应的配置文件中。',
+      },
+      gemini: {
+        description: '将以下环境变量添加到您的终端配置文件或直接在终端中运行，以配置 Gemini CLI 访问。',
+        modelComment: '如果你有 Gemini 3 权限可以填：gemini-3-pro-preview',
+        note: '这些环境变量将在当前终端会话中生效。如需永久配置，请将其添加到 ~/.bashrc、~/.zshrc 或相应的配置文件中。',
+      },
     },
     customKeyLabel: '自定义密钥',
     customKeyPlaceholder: '输入自定义密钥（至少16个字符）',
@@ -324,7 +336,15 @@ export default {
     customKeyTooShort: '自定义密钥至少需要16个字符',
     customKeyInvalidChars: '自定义密钥只能包含字母、数字、下划线和连字符',
     customKeyRequired: '请输入自定义密钥',
-    ccSwitchNotInstalled: 'CC-Switch 未安装或协议处理程序未注册。请先安装 CC-Switch 或手动复制 API 密钥。'
+    ccSwitchNotInstalled: 'CC-Switch 未安装或协议处理程序未注册。请先安装 CC-Switch 或手动复制 API 密钥。',
+    ccsClientSelect: {
+      title: '选择客户端',
+      description: '请选择您要导入到 CC-Switch 的客户端类型：',
+      claudeCode: 'Claude Code',
+      claudeCodeDesc: '导入为 Claude Code 配置',
+      geminiCli: 'Gemini CLI',
+      geminiCliDesc: '导入为 Gemini CLI 配置',
+    },
   },
 
   // Usage
diff --git a/frontend/src/views/user/KeysView.vue b/frontend/src/views/user/KeysView.vue
index ac37485d..bc8986f6 100644
--- a/frontend/src/views/user/KeysView.vue
+++ b/frontend/src/views/user/KeysView.vue
@@ -173,7 +173,7 @@
               </button>
               <!-- Import to CC Switch Button -->
               <button
-                @click="importToCcswitch(row.key)"
+                @click="importToCcswitch(row)"
                 class="flex flex-col items-center gap-0.5 rounded-lg p-1.5 text-gray-500 transition-colors hover:bg-blue-50 hover:text-blue-600 dark:hover:bg-blue-900/20 dark:hover:text-blue-400"
               >
                 <svg
@@ -453,6 +453,49 @@
       @close="closeUseKeyModal"
     />
 
+    <!-- CCS Client Selection Dialog for Antigravity -->
+    <BaseDialog
+      :show="showCcsClientSelect"
+      :title="t('keys.ccsClientSelect.title')"
+      width="narrow"
+      @close="closeCcsClientSelect"
+    >
+      <div class="space-y-4">
+        <p class="text-sm text-gray-600 dark:text-gray-400">
+          {{ t('keys.ccsClientSelect.description') }}
+        </p>
+        <div class="grid grid-cols-2 gap-3">
+          <button
+            @click="handleCcsClientSelect('claude')"
+            class="flex flex-col items-center gap-2 p-4 rounded-xl border-2 border-gray-200 dark:border-dark-600 hover:border-primary-500 dark:hover:border-primary-500 hover:bg-primary-50 dark:hover:bg-primary-900/20 transition-all"
+          >
+            <svg class="w-8 h-8 text-gray-600 dark:text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24" stroke-width="1.5">
+              <path stroke-linecap="round" stroke-linejoin="round" d="m6.75 7.5 3 2.25-3 2.25m4.5 0h3m-9 8.25h13.5A2.25 2.25 0 0 0 21 17.25V6.75A2.25 2.25 0 0 0 18.75 4.5H5.25A2.25 2.25 0 0 0 3 6.75v10.5A2.25 2.25 0 0 0 5.25 20.25Z" />
+            </svg>
+            <span class="font-medium text-gray-900 dark:text-white">{{ t('keys.ccsClientSelect.claudeCode') }}</span>
+            <span class="text-xs text-gray-500 dark:text-gray-400">{{ t('keys.ccsClientSelect.claudeCodeDesc') }}</span>
+          </button>
+          <button
+            @click="handleCcsClientSelect('gemini')"
+            class="flex flex-col items-center gap-2 p-4 rounded-xl border-2 border-gray-200 dark:border-dark-600 hover:border-primary-500 dark:hover:border-primary-500 hover:bg-primary-50 dark:hover:bg-primary-900/20 transition-all"
+          >
+            <svg class="w-8 h-8 text-gray-600 dark:text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24" stroke-width="1.5">
+              <path stroke-linecap="round" stroke-linejoin="round" d="M9.813 15.904 9 18.75l-.813-2.846a4.5 4.5 0 0 0-3.09-3.09L2.25 12l2.846-.813a4.5 4.5 0 0 0 3.09-3.09L9 5.25l.813 2.846a4.5 4.5 0 0 0 3.09 3.09L15.75 12l-2.846.813a4.5 4.5 0 0 0-3.09 3.09ZM18.259 8.715 18 9.75l-.259-1.035a3.375 3.375 0 0 0-2.455-2.456L14.25 6l1.036-.259a3.375 3.375 0 0 0 2.455-2.456L18 2.25l.259 1.035a3.375 3.375 0 0 0 2.456 2.456L21.75 6l-1.035.259a3.375 3.375 0 0 0-2.456 2.456ZM16.894 20.567 16.5 21.75l-.394-1.183a2.25 2.25 0 0 0-1.423-1.423L13.5 18.75l1.183-.394a2.25 2.25 0 0 0 1.423-1.423l.394-1.183.394 1.183a2.25 2.25 0 0 0 1.423 1.423l1.183.394-1.183.394a2.25 2.25 0 0 0-1.423 1.423Z" />
+            </svg>
+            <span class="font-medium text-gray-900 dark:text-white">{{ t('keys.ccsClientSelect.geminiCli') }}</span>
+            <span class="text-xs text-gray-500 dark:text-gray-400">{{ t('keys.ccsClientSelect.geminiCliDesc') }}</span>
+          </button>
+        </div>
+      </div>
+      <template #footer>
+        <div class="flex justify-end">
+          <button @click="closeCcsClientSelect" class="btn btn-secondary">
+            {{ t('common.cancel') }}
+          </button>
+        </div>
+      </template>
+    </BaseDialog>
+
     <!-- Group Selector Dropdown (Teleported to body to avoid overflow clipping) -->
     <Teleport to="body">
       <div
@@ -563,6 +606,8 @@ const showCreateModal = ref(false)
 const showEditModal = ref(false)
 const showDeleteDialog = ref(false)
 const showUseKeyModal = ref(false)
+const showCcsClientSelect = ref(false)
+const pendingCcsRow = ref<ApiKey | null>(null)
 const selectedKey = ref<ApiKey | null>(null)
 const copiedKeyId = ref<number | null>(null)
 const groupSelectorKeyId = ref<number | null>(null)
@@ -871,8 +916,48 @@ const closeModals = () => {
   }
 }
 
-const importToCcswitch = (apiKey: string) => {
+const importToCcswitch = (row: ApiKey) => {
+  const platform = row.group?.platform || 'anthropic'
+
+  // For antigravity platform, show client selection dialog
+  if (platform === 'antigravity') {
+    pendingCcsRow.value = row
+    showCcsClientSelect.value = true
+    return
+  }
+
+  // For other platforms, execute directly
+  executeCcsImport(row, platform === 'gemini' ? 'gemini' : 'claude')
+}
+
+const executeCcsImport = (row: ApiKey, clientType: 'claude' | 'gemini') => {
   const baseUrl = publicSettings.value?.api_base_url || window.location.origin
+  const platform = row.group?.platform || 'anthropic'
+
+  // Determine app name and endpoint based on platform and client type
+  let app: string
+  let endpoint: string
+
+  if (platform === 'antigravity') {
+    // Antigravity always uses /antigravity suffix
+    app = clientType === 'gemini' ? 'gemini' : 'claude'
+    endpoint = `${baseUrl}/antigravity`
+  } else {
+    switch (platform) {
+      case 'openai':
+        app = 'codex'
+        endpoint = baseUrl
+        break
+      case 'gemini':
+        app = 'gemini'
+        endpoint = baseUrl
+        break
+      default: // anthropic
+        app = 'claude'
+        endpoint = baseUrl
+    }
+  }
+
   const usageScript = `({
     request: {
       url: "{{baseUrl}}/v1/usage",
@@ -889,11 +974,11 @@ const importToCcswitch = (apiKey: string) => {
   })`
   const params = new URLSearchParams({
     resource: 'provider',
-    app: 'claude',
+    app: app,
     name: 'sub2api',
     homepage: baseUrl,
-    endpoint: baseUrl,
-    apiKey: apiKey,
+    endpoint: endpoint,
+    apiKey: row.key,
     configFormat: 'json',
     usageEnabled: 'true',
     usageScript: btoa(usageScript),
@@ -916,6 +1001,19 @@ const importToCcswitch = (apiKey: string) => {
   }
 }
 
+const handleCcsClientSelect = (clientType: 'claude' | 'gemini') => {
+  if (pendingCcsRow.value) {
+    executeCcsImport(pendingCcsRow.value, clientType)
+  }
+  showCcsClientSelect.value = false
+  pendingCcsRow.value = null
+}
+
+const closeCcsClientSelect = () => {
+  showCcsClientSelect.value = false
+  pendingCcsRow.value = null
+}
+
 onMounted(() => {
   loadApiKeys()
   loadGroups()