diff --git a/Cargo.lock b/Cargo.lock
index ab85ec9..341354c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1128,7 +1128,7 @@ checksum = "52560adf09603e58c9a7ee1fe1dcb95a16927b17c127f0ac02d6e768a0e25bc1"
 
 [[package]]
 name = "cursor-byok-desktop"
-version = "0.1.0-beta.1"
+version = "0.1.0-beta.2"
 dependencies = [
  "axum",
  "cursor-server",
diff --git a/apps/desktop/package-lock.json b/apps/desktop/package-lock.json
index 0048af2..042fb05 100644
--- a/apps/desktop/package-lock.json
+++ b/apps/desktop/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "cursor-byok-desktop",
-  "version": "0.1.0-beta.1",
+  "version": "0.1.0-beta.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "cursor-byok-desktop",
-      "version": "0.1.0-beta.1",
+      "version": "0.1.0-beta.2",
       "license": "MIT",
       "dependencies": {
         "@floating-ui/dom": "^1.8.0",
diff --git a/apps/desktop/package.json b/apps/desktop/package.json
index 7e37881..59e438d 100644
--- a/apps/desktop/package.json
+++ b/apps/desktop/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cursor-byok-desktop",
-  "version": "0.1.0-beta.1",
+  "version": "0.1.0-beta.2",
   "description": "Cursor BYOK desktop management application",
   "type": "module",
   "scripts": {
diff --git a/apps/desktop/src-tauri/Cargo.toml b/apps/desktop/src-tauri/Cargo.toml
index daf8239..b7c770f 100644
--- a/apps/desktop/src-tauri/Cargo.toml
+++ b/apps/desktop/src-tauri/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cursor-byok-desktop"
-version = "0.1.0-beta.1"
+version = "0.1.0-beta.2"
 edition = "2021"
 publish = false
 
diff --git a/apps/desktop/src-tauri/tauri.conf.json b/apps/desktop/src-tauri/tauri.conf.json
index 0f6a03f..7d36928 100644
--- a/apps/desktop/src-tauri/tauri.conf.json
+++ b/apps/desktop/src-tauri/tauri.conf.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://schema.tauri.app/config/2",
   "productName": "Cursor BYOK",
-  "version": "0.1.0-beta.1",
+  "version": "0.1.0-beta.2",
   "identifier": "dev.cursorbyok.desktop",
   "build": {
     "beforeDevCommand": "npm run dev",
diff --git a/apps/desktop/src/api.ts b/apps/desktop/src/api.ts
index 486886e..186d6d7 100644
--- a/apps/desktop/src/api.ts
+++ b/apps/desktop/src/api.ts
@@ -97,6 +97,13 @@ export interface ProxySettingsInput {
   password?: string;
 }
 
+export type TabMode = "public" | "direct" | "custom";
+
+export interface TabSettings {
+  mode: TabMode;
+  address: string;
+}
+
 export interface OverviewMetrics {
   llm_calls: number;
   successful_calls: number;
@@ -283,4 +290,6 @@ export const api = {
   clearStatisticsStorage: () => request<StatisticsStorage>("/settings/storage/statistics", { method: "DELETE" }),
   proxySettings: () => request<ProxySettings>("/settings/proxy"),
   setProxySettings: (settings: ProxySettingsInput) => request<ProxySettings>("/settings/proxy", { method: "PUT", body: JSON.stringify(settings) }),
+  tabSettings: () => request<TabSettings>("/settings/tab"),
+  setTabSettings: (settings: TabSettings) => request<TabSettings>("/settings/tab", { method: "PUT", body: JSON.stringify(settings) }),
 };
diff --git a/apps/desktop/src/components/cursor/CursorSettings.module.scss b/apps/desktop/src/components/cursor/CursorSettings.module.scss
index 36dceed..170b663 100644
--- a/apps/desktop/src/components/cursor/CursorSettings.module.scss
+++ b/apps/desktop/src/components/cursor/CursorSettings.module.scss
@@ -1,5 +1,10 @@
 @use "../../styles/typography" as type;
 
+.page {
+  display: grid;
+  gap: 16px;
+}
+
 .gate {
   min-height: 250px;
   display: flex;
diff --git a/apps/desktop/src/components/cursor/TabSettingsCard.module.scss b/apps/desktop/src/components/cursor/TabSettingsCard.module.scss
new file mode 100644
index 0000000..39b7489
--- /dev/null
+++ b/apps/desktop/src/components/cursor/TabSettingsCard.module.scss
@@ -0,0 +1,51 @@
+@use "../../styles/typography" as type;
+
+.title {
+  min-width: 0;
+  display: flex;
+  align-items: center;
+  gap: 5px;
+}
+
+.row {
+  min-height: 62px;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 20px;
+  padding: 12px 16px;
+
+  & + & {
+    border-top: 1px solid var(--vscode-sideBar-border);
+  }
+}
+
+.description {
+  min-width: 0;
+  display: grid;
+  gap: 5px;
+
+  small {
+    color: var(--vscode-descriptionForeground);
+    font-size: type.$font-size-xs;
+  }
+}
+
+.selectControl,
+.addressInput {
+  width: min(300px, 44%);
+  flex: 0 0 auto;
+}
+
+@media (max-width: 620px) {
+  .row {
+    align-items: stretch;
+    flex-direction: column;
+    gap: 10px;
+  }
+
+  .selectControl,
+  .addressInput {
+    width: 100%;
+  }
+}
diff --git a/apps/desktop/src/components/cursor/TabSettingsCard.tsx b/apps/desktop/src/components/cursor/TabSettingsCard.tsx
new file mode 100644
index 0000000..69d5a45
--- /dev/null
+++ b/apps/desktop/src/components/cursor/TabSettingsCard.tsx
@@ -0,0 +1,53 @@
+import cursorIconUrl from "../../assets/icons/cursor.svg";
+import type { TabMode, TabSettings } from "../../api";
+import { Button } from "../ui/Button";
+import { TextInput } from "../ui/FormControls";
+import { Icon } from "../ui/Icon";
+import { Select } from "../ui/Select";
+import { TitledCard } from "../ui/TitledCard";
+import styles from "./TabSettingsCard.module.scss";
+
+export function TabSettingsCard({ settings, saving, onChange, onSave }: {
+  settings: TabSettings;
+  saving: boolean;
+  onChange: (settings: TabSettings) => void;
+  onSave: () => void;
+}) {
+  return <TitledCard
+    title={<div className={styles.title}><Icon src={cursorIconUrl} size="1.1em" /><span>{t("TAB 设置")}</span></div>}
+    action={<Button size="small" variant="primary" disabled={saving} onClick={onSave}>{saving ? t("保存中…") : t("保存")}</Button>}
+  >
+    <div className={styles.row}>
+      <div className={styles.description}>
+        <strong>{t("TAB 选择")}</strong>
+        <small>{t("控制 Cursor TAB 相关接口的连接方式。")}</small>
+      </div>
+      <div className={styles.selectControl}>
+        <Select
+          value={settings.mode}
+          ariaLabel={t("TAB 选择")}
+          options={[
+            { value: "public", label: t("使用公益服务") },
+            { value: "direct", label: t("直连") },
+            { value: "custom", label: t("自定义") },
+          ]}
+          onChange={(mode) => onChange({ ...settings, mode: mode as TabMode })}
+        />
+      </div>
+    </div>
+    {settings.mode === "custom" && <div className={styles.row}>
+      <div className={styles.description}>
+        <strong>{t("TAB 服务地址")}</strong>
+        <small>{t("原接口路径会追加到此服务地址。")}</small>
+      </div>
+      <TextInput
+        className={styles.addressInput}
+        value={settings.address}
+        placeholder="https://tab.leokun.cn"
+        aria-label={t("TAB 服务地址")}
+        onChange={(event) => onChange({ ...settings, address: event.target.value })}
+        onKeyDown={(event) => { if (event.key === "Enter") onSave(); }}
+      />
+    </div>}
+  </TitledCard>;
+}
diff --git a/apps/desktop/src/i18n/generated/catalog.json b/apps/desktop/src/i18n/generated/catalog.json
index 4180be5..c703bae 100644
--- a/apps/desktop/src/i18n/generated/catalog.json
+++ b/apps/desktop/src/i18n/generated/catalog.json
@@ -175,7 +175,7 @@
       "refs": [
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 156,
+          "line": 180,
           "column": 89
         }
       ]
@@ -278,12 +278,12 @@
       "refs": [
         {
           "file": "components/charts/DailyTokenUsageChart.tsx",
-          "line": 108,
+          "line": 109,
           "column": 47
         },
         {
           "file": "components/charts/DailyTokenUsageChart.tsx",
-          "line": 172,
+          "line": 173,
           "column": 15
         }
       ]
@@ -353,7 +353,7 @@
       "refs": [
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 155,
+          "line": 179,
           "column": 36
         },
         {
@@ -440,17 +440,17 @@
         },
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 120,
+          "line": 144,
           "column": 40
         },
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 120,
+          "line": 144,
           "column": 119
         },
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 123,
+          "line": 147,
           "column": 63
         }
       ]
@@ -515,7 +515,7 @@
       "refs": [
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 79,
+          "line": 87,
           "column": 86
         }
       ]
@@ -573,17 +573,17 @@
       "refs": [
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 98,
+          "line": 106,
           "column": 32
         },
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 98,
+          "line": 106,
           "column": 119
         },
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 133,
+          "line": 157,
           "column": 44
         }
       ]
@@ -766,7 +766,7 @@
       "refs": [
         {
           "file": "layouts/AppLayout.tsx",
-          "line": 216,
+          "line": 220,
           "column": 14
         }
       ]
@@ -805,12 +805,12 @@
         },
         {
           "file": "layouts/AppLayout.tsx",
-          "line": 217,
+          "line": 221,
           "column": 19
         },
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 133,
+          "line": 157,
           "column": 67
         },
         {
@@ -877,7 +877,7 @@
       "refs": [
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 141,
+          "line": 165,
           "column": 70
         },
         {
@@ -887,6 +887,18 @@
         }
       ]
     },
+    "2f4a9609285d8f49": {
+      "source": "TAB 设置已保存",
+      "kind": "text",
+      "placeholders": [],
+      "refs": [
+        {
+          "file": "pages/CursorSettingsPage.tsx",
+          "line": 128,
+          "column": 15
+        }
+      ]
+    },
     "2f5f1d6fbfb061ed": {
       "source": "未设置",
       "kind": "text",
@@ -932,7 +944,7 @@
       "refs": [
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 133,
+          "line": 157,
           "column": 89
         }
       ]
@@ -944,7 +956,7 @@
       "refs": [
         {
           "file": "layouts/AppLayout.tsx",
-          "line": 218,
+          "line": 222,
           "column": 20
         }
       ]
@@ -1024,12 +1036,12 @@
       "refs": [
         {
           "file": "components/charts/DailyTokenUsageChart.tsx",
-          "line": 106,
+          "line": 107,
           "column": 50
         },
         {
           "file": "components/charts/DailyTokenUsageChart.tsx",
-          "line": 154,
+          "line": 155,
           "column": 15
         }
       ]
@@ -1137,6 +1149,18 @@
         }
       ]
     },
+    "3f6c25aa329163a4": {
+      "source": "原接口路径会追加到此服务地址。",
+      "kind": "text",
+      "placeholders": [],
+      "refs": [
+        {
+          "file": "components/cursor/TabSettingsCard.tsx",
+          "line": 41,
+          "column": 17
+        }
+      ]
+    },
     "3fd47edce45b3603": {
       "source": "关闭",
       "kind": "text",
@@ -1144,7 +1168,7 @@
       "refs": [
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 126,
+          "line": 150,
           "column": 71
         }
       ]
@@ -1168,12 +1192,12 @@
       "refs": [
         {
           "file": "components/charts/DailyTokenUsageChart.tsx",
-          "line": 105,
+          "line": 106,
           "column": 46
         },
         {
           "file": "components/charts/DailyTokenUsageChart.tsx",
-          "line": 145,
+          "line": 146,
           "column": 15
         }
       ]
@@ -1338,8 +1362,8 @@
         },
         {
           "file": "layouts/AppLayout.tsx",
-          "line": 197,
-          "column": 84
+          "line": 194,
+          "column": 67
         }
       ]
     },
@@ -1348,6 +1372,11 @@
       "kind": "text",
       "placeholders": [],
       "refs": [
+        {
+          "file": "components/cursor/TabSettingsCard.tsx",
+          "line": 32,
+          "column": 39
+        },
         {
           "file": "components/overview/OverviewTimeRangeFilter.tsx",
           "line": 89,
@@ -1389,6 +1418,18 @@
         }
       ]
     },
+    "5401344227e49e2f": {
+      "source": "TAB 设置",
+      "kind": "text",
+      "placeholders": [],
+      "refs": [
+        {
+          "file": "components/cursor/TabSettingsCard.tsx",
+          "line": 17,
+          "column": 90
+        }
+      ]
+    },
     "54644705e9c61009": {
       "source": "端口设置",
       "kind": "text",
@@ -1449,11 +1490,40 @@
       "refs": [
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 120,
+          "line": 144,
           "column": 52
         }
       ]
     },
+    "59346e82b3dd2998": {
+      "source": "TAB 服务地址",
+      "kind": "text",
+      "placeholders": [],
+      "refs": [
+        {
+          "file": "components/cursor/TabSettingsCard.tsx",
+          "line": 40,
+          "column": 18
+        },
+        {
+          "file": "components/cursor/TabSettingsCard.tsx",
+          "line": 47,
+          "column": 21
+        }
+      ]
+    },
+    "5a3bd99fa69a40c1": {
+      "source": "使用公益服务",
+      "kind": "text",
+      "placeholders": [],
+      "refs": [
+        {
+          "file": "components/cursor/TabSettingsCard.tsx",
+          "line": 30,
+          "column": 39
+        }
+      ]
+    },
     "5ae715656ffbc35d": {
       "source": "合并到该上游所有模型的请求体。",
       "kind": "text",
@@ -1502,7 +1572,7 @@
       "refs": [
         {
           "file": "layouts/AppLayout.tsx",
-          "line": 222,
+          "line": 226,
           "column": 11
         }
       ]
@@ -1528,12 +1598,12 @@
       "refs": [
         {
           "file": "components/charts/DailyTokenUsageChart.tsx",
-          "line": 107,
+          "line": 108,
           "column": 51
         },
         {
           "file": "components/charts/DailyTokenUsageChart.tsx",
-          "line": 163,
+          "line": 164,
           "column": 15
         }
       ]
@@ -1614,7 +1684,7 @@
       "refs": [
         {
           "file": "api.ts",
-          "line": 265,
+          "line": 272,
           "column": 43
         }
       ]
@@ -1876,7 +1946,7 @@
       "refs": [
         {
           "file": "api.ts",
-          "line": 260,
+          "line": 267,
           "column": 43
         }
       ]
@@ -1919,6 +1989,18 @@
         }
       ]
     },
+    "7e0891860c9e6374": {
+      "source": "TAB 服务地址不能为空",
+      "kind": "text",
+      "placeholders": [],
+      "refs": [
+        {
+          "file": "pages/CursorSettingsPage.tsx",
+          "line": 125,
+          "column": 83
+        }
+      ]
+    },
     "7e1845870b528392": {
       "source": "启用模型",
       "kind": "text",
@@ -2003,7 +2085,7 @@
       "refs": [
         {
           "file": "api.ts",
-          "line": 214,
+          "line": 221,
           "column": 21
         }
       ]
@@ -2049,7 +2131,7 @@
       "refs": [
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 150,
+          "line": 174,
           "column": 21
         }
       ]
@@ -2158,11 +2240,23 @@
       "refs": [
         {
           "file": "layouts/AppLayout.tsx",
-          "line": 224,
+          "line": 228,
           "column": 16
         }
       ]
     },
+    "8f9b0d6cc477d334": {
+      "source": "控制 Cursor TAB 相关接口的连接方式。",
+      "kind": "text",
+      "placeholders": [],
+      "refs": [
+        {
+          "file": "components/cursor/TabSettingsCard.tsx",
+          "line": 23,
+          "column": 17
+        }
+      ]
+    },
     "90800c48a1dd0655": {
       "source": "{label} 必须是 JSON 对象",
       "kind": "template",
@@ -2172,7 +2266,7 @@
       "refs": [
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 142,
+          "line": 166,
           "column": 87
         },
         {
@@ -2237,7 +2331,7 @@
       "refs": [
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 134,
+          "line": 158,
           "column": 11
         }
       ]
@@ -2278,6 +2372,23 @@
         }
       ]
     },
+    "966498853d801a52": {
+      "source": "TAB 选择",
+      "kind": "text",
+      "placeholders": [],
+      "refs": [
+        {
+          "file": "components/cursor/TabSettingsCard.tsx",
+          "line": 22,
+          "column": 18
+        },
+        {
+          "file": "components/cursor/TabSettingsCard.tsx",
+          "line": 28,
+          "column": 22
+        }
+      ]
+    },
     "9850ed41a5bfbb0c": {
       "source": "已选 {count} 项",
       "kind": "template",
@@ -2434,6 +2545,11 @@
       "kind": "text",
       "placeholders": [],
       "refs": [
+        {
+          "file": "components/cursor/TabSettingsCard.tsx",
+          "line": 18,
+          "column": 109
+        },
         {
           "file": "components/settings/ProxySettingsCard.tsx",
           "line": 33,
@@ -2482,7 +2598,7 @@
       "refs": [
         {
           "file": "components/charts/DailyTokenUsageChart.tsx",
-          "line": 186,
+          "line": 187,
           "column": 24
         }
       ]
@@ -2680,16 +2796,28 @@
         },
         {
           "file": "layouts/AppLayout.tsx",
-          "line": 237,
+          "line": 241,
           "column": 64
         },
         {
           "file": "layouts/AppLayout.tsx",
-          "line": 237,
+          "line": 241,
           "column": 125
         }
       ]
     },
+    "b06325c5660f0c29": {
+      "source": "直连",
+      "kind": "text",
+      "placeholders": [],
+      "refs": [
+        {
+          "file": "components/cursor/TabSettingsCard.tsx",
+          "line": 31,
+          "column": 39
+        }
+      ]
+    },
     "b4411558b932266f": {
       "source": "上游类型",
       "kind": "text",
@@ -2788,7 +2916,7 @@
       "refs": [
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 126,
+          "line": 150,
           "column": 93
         }
       ]
@@ -2892,7 +3020,7 @@
       "refs": [
         {
           "file": "layouts/AppLayout.tsx",
-          "line": 229,
+          "line": 233,
           "column": 24
         }
       ]
@@ -3000,17 +3128,17 @@
       "refs": [
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 97,
+          "line": 105,
           "column": 32
         },
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 97,
+          "line": 105,
           "column": 95
         },
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 123,
+          "line": 147,
           "column": 51
         }
       ]
@@ -3198,7 +3326,7 @@
       "refs": [
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 77,
+          "line": 85,
           "column": 45
         }
       ]
@@ -3292,7 +3420,7 @@
       "refs": [
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 128,
+          "line": 152,
           "column": 18
         }
       ]
@@ -3328,7 +3456,7 @@
       "refs": [
         {
           "file": "components/charts/DailyTokenUsageChart.tsx",
-          "line": 104,
+          "line": 105,
           "column": 14
         }
       ]
@@ -3465,7 +3593,7 @@
       "refs": [
         {
           "file": "components/charts/DailyTokenUsageChart.tsx",
-          "line": 134,
+          "line": 135,
           "column": 15
         }
       ]
@@ -3542,7 +3670,7 @@
       "refs": [
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 78,
+          "line": 86,
           "column": 72
         }
       ]
@@ -3619,7 +3747,7 @@
       "refs": [
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 129,
+          "line": 153,
           "column": 16
         }
       ]
@@ -3648,7 +3776,7 @@
       "refs": [
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 126,
+          "line": 150,
           "column": 45
         }
       ]
@@ -3665,7 +3793,7 @@
         },
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 122,
+          "line": 146,
           "column": 25
         }
       ]
@@ -3701,7 +3829,7 @@
       "refs": [
         {
           "file": "pages/CursorSettingsPage.tsx",
-          "line": 54,
+          "line": 62,
           "column": 187
         },
         {
@@ -3995,6 +4123,11 @@
       "kind": "text",
       "placeholders": [],
       "refs": [
+        {
+          "file": "components/cursor/TabSettingsCard.tsx",
+          "line": 18,
+          "column": 97
+        },
         {
           "file": "components/settings/ProxySettingsCard.tsx",
           "line": 33,
diff --git a/apps/desktop/src/i18n/locales/en-US.json b/apps/desktop/src/i18n/locales/en-US.json
index c009e65..a4b7e99 100644
--- a/apps/desktop/src/i18n/locales/en-US.json
+++ b/apps/desktop/src/i18n/locales/en-US.json
@@ -56,6 +56,7 @@
   "2eb2bf7c6597ab9a": "Detailed records",
   "2f1b67cdaa23351a": "Custom full request URL",
   "2f4a361f878176d1": "{label} must be valid JSON",
+  "2f4a9609285d8f49": "TAB settings saved",
   "2f5f1d6fbfb061ed": "Not set",
   "2f6416a2c424856b": "Final request URL",
   "2f7dec3be28d7597": "{count} selected",
@@ -75,6 +76,7 @@
   "3cfae5728b92b334": "Token usage: {tokens}",
   "3d13868593ae4eeb": "Display language",
   "3da0bf1610ff5db5": "Recommended",
+  "3f6c25aa329163a4": "The original endpoint path is appended to this service address.",
   "3fd47edce45b3603": "Close",
   "4125fc7ba333524c": "Default light",
   "42655ed8e4108ae2": "Input (non-cached)",
@@ -93,11 +95,14 @@
   "4eafa9e925b30bcd": "Custom",
   "51d04bc3d286f018": "Last calendar day",
   "5228358a6db59fe7": "For example: now, 2026-08-23 18:00",
+  "5401344227e49e2f": "TAB settings",
   "54644705e9c61009": "Port settings",
   "54c53e5fe791d1f3": "Initialize CA",
   "550eddc3c7fefa99": "Sponsored",
   "555737734a6371e6": "Delete provider",
   "56432ba297009bdc": "Initialize the CA first",
+  "59346e82b3dd2998": "TAB service address",
+  "5a3bd99fa69a40c1": "Use public service",
   "5ae715656ffbc35d": "Merge into the request body for every model from this provider.",
   "5c55a67935af8f45": "All",
   "5f8d556a9c47da3c": "Launch at login disabled",
@@ -132,6 +137,7 @@
   "7a3cec4ca715de80": "Call statistics",
   "7ba2d6728fe2531b": "Confirm clear",
   "7d9f043f8f7ab45c": "Version {version} is available in Settings",
+  "7e0891860c9e6374": "TAB service address is required",
   "7e1845870b528392": "Enable model",
   "7e1f06318e80c3af": "Statistics cleared",
   "7e9ab9ada2cbf2cb": "Name and Base URL are required",
@@ -149,6 +155,7 @@
   "8b6ff498515bcc2f": "Time",
   "8d0c47eb9eac2d34": "Call type",
   "8df48894086d6fbd": "Reason (optional)",
+  "8f9b0d6cc477d334": "Choose how Cursor connects to TAB endpoints.",
   "90800c48a1dd0655": "{label} must be a JSON object",
   "919cb0ce0c8db4e7": "Leave blank to keep the current password",
   "91aaf184cfc17ffd": "Overview",
@@ -158,6 +165,7 @@
   "94803f35c825e47a": "Full request URL",
   "94df1e7f04815daf": "Used only for display; does not change the model name sent to the provider.",
   "95f76d30c25d5eda": "CA installation is not supported on this system",
+  "966498853d801a52": "TAB connection",
   "9850ed41a5bfbb0c": "{count} selected",
   "997ec8201c2adeda": "Open terminal to install CA",
   "9a026819dd1af5c5": "Enter a model identifier directly or select one returned by the current provider.",
@@ -186,6 +194,7 @@
   "ad6a60ee93d3ba3e": "Loading call details…",
   "ae2d0b7f79cea4a3": "Model output: {tokens} × ${price}/1M = {cost}",
   "aee88743413144a2": "Refresh",
+  "b06325c5660f0c29": "Direct",
   "b4411558b932266f": "Provider type",
   "b502b1d414664337": "Prompt: {tokens}",
   "b5141d3d19e9a048": "Yes",
diff --git a/apps/desktop/src/i18n/locales/zh-CN.json b/apps/desktop/src/i18n/locales/zh-CN.json
index f2073c0..7fa5df3 100644
--- a/apps/desktop/src/i18n/locales/zh-CN.json
+++ b/apps/desktop/src/i18n/locales/zh-CN.json
@@ -56,6 +56,7 @@
   "2eb2bf7c6597ab9a": "详细记录",
   "2f1b67cdaa23351a": "自定义请求完整地址",
   "2f4a361f878176d1": "{label} 必须是有效 JSON",
+  "2f4a9609285d8f49": "TAB 设置已保存",
   "2f5f1d6fbfb061ed": "未设置",
   "2f6416a2c424856b": "最终请求地址",
   "2f7dec3be28d7597": "已选择 {count} 个",
@@ -75,6 +76,7 @@
   "3cfae5728b92b334": "Token 用量：{tokens}",
   "3d13868593ae4eeb": "界面语言",
   "3da0bf1610ff5db5": "推荐内容",
+  "3f6c25aa329163a4": "原接口路径会追加到此服务地址。",
   "3fd47edce45b3603": "关闭",
   "4125fc7ba333524c": "默认亮色",
   "42655ed8e4108ae2": "输入（非缓存）",
@@ -93,11 +95,14 @@
   "4eafa9e925b30bcd": "自定义",
   "51d04bc3d286f018": "近1自然日",
   "5228358a6db59fe7": "如：现在、2026-08-23 18:00",
+  "5401344227e49e2f": "TAB 设置",
   "54644705e9c61009": "端口设置",
   "54c53e5fe791d1f3": "初始化 CA",
   "550eddc3c7fefa99": "推广",
   "555737734a6371e6": "删除上游",
   "56432ba297009bdc": "请先初始化 CA",
+  "59346e82b3dd2998": "TAB 服务地址",
+  "5a3bd99fa69a40c1": "使用公益服务",
   "5ae715656ffbc35d": "合并到该上游所有模型的请求体。",
   "5c55a67935af8f45": "全部",
   "5f8d556a9c47da3c": "已关闭开机启动",
@@ -132,6 +137,7 @@
   "7a3cec4ca715de80": "调用统计",
   "7ba2d6728fe2531b": "确认清理",
   "7d9f043f8f7ab45c": "发现新版本 {version}，可在设置中安装",
+  "7e0891860c9e6374": "TAB 服务地址不能为空",
   "7e1845870b528392": "启用模型",
   "7e1f06318e80c3af": "统计数据已清理",
   "7e9ab9ada2cbf2cb": "名称和 Base URL 不能为空",
@@ -149,6 +155,7 @@
   "8b6ff498515bcc2f": "时间",
   "8d0c47eb9eac2d34": "调用类型",
   "8df48894086d6fbd": "原因（可选）",
+  "8f9b0d6cc477d334": "控制 Cursor TAB 相关接口的连接方式。",
   "90800c48a1dd0655": "{label} 必须是 JSON 对象",
   "919cb0ce0c8db4e7": "留空表示保留当前密码",
   "91aaf184cfc17ffd": "数据概览",
@@ -158,6 +165,7 @@
   "94803f35c825e47a": "请求完整地址",
   "94df1e7f04815daf": "仅用于界面展示，不会改变发送给上游的模型名称。",
   "95f76d30c25d5eda": "当前系统暂不支持安装 CA",
+  "966498853d801a52": "TAB 选择",
   "9850ed41a5bfbb0c": "已选 {count} 项",
   "997ec8201c2adeda": "打开终端安装 CA",
   "9a026819dd1af5c5": "可以直接输入模型标识，也可以从当前上游返回的模型列表中选择。",
@@ -186,6 +194,7 @@
   "ad6a60ee93d3ba3e": "正在加载调用详情…",
   "ae2d0b7f79cea4a3": "模型输出：{tokens} × ${price}/1M = {cost}",
   "aee88743413144a2": "刷新",
+  "b06325c5660f0c29": "直连",
   "b4411558b932266f": "上游类型",
   "b502b1d414664337": "提示词：{tokens}",
   "b5141d3d19e9a048": "是",
diff --git a/apps/desktop/src/pages/CursorSettingsPage.tsx b/apps/desktop/src/pages/CursorSettingsPage.tsx
index 9694770..248e5c1 100644
--- a/apps/desktop/src/pages/CursorSettingsPage.tsx
+++ b/apps/desktop/src/pages/CursorSettingsPage.tsx
@@ -1,7 +1,8 @@
 import { useEffect, useMemo, useState } from "react";
-import { api, type Model, type ProviderSelection } from "../api";
+import { api, type Model, type ProviderSelection, type TabSettings } from "../api";
 import { CursorCaGate, CursorCaProvider, CursorModelGate, CursorModelProvider } from "../components/cursor/CursorGates";
 import { CursorModelEditor, emptyCursorModelDraft, type CursorModelDraft } from "../components/cursor/CursorModelEditor";
+import { TabSettingsCard } from "../components/cursor/TabSettingsCard";
 import styles from "../components/cursor/CursorSettings.module.scss";
 import { PageContent } from "../components/layout/PageContent";
 import controls from "../components/ui/Controls.module.scss";
@@ -24,12 +25,19 @@ export function CursorSettingsPage() {
   const [caCommand, setCaCommand] = useState<string | null>(null);
   const [waitingForCaRefresh, setWaitingForCaRefresh] = useState(false);
   const [deleting, setDeleting] = useState<Model | null>(null);
+  const [tabDraft, setTabDraft] = useState<TabSettings | null>(null);
+  const [savingTab, setSavingTab] = useState(false);
   const grouped = useMemo(() => providers.map((provider) => ({ provider, models: models.filter((model) => model.provider_id === provider.provider_id) })).filter((group) => group.models.length > 0), [providers, models]);
   const caReady = cursorHarness?.ca === "ready";
   useEffect(() => {
     if (!caCommand) return;
     void api.copyCursorText(caCommand);
   }, [caCommand]);
+  useEffect(() => {
+    void api.tabSettings()
+      .then(setTabDraft)
+      .catch((cause) => message(cause instanceof Error ? cause.message : String(cause)));
+  }, [message]);
   const initializeCa = async () => {
     const status = await appStore.initializeCursorCa();
     if (status?.ca === "untrusted" && status.ca_install_command) setCaCommand(status.ca_install_command);
@@ -111,15 +119,31 @@ export function CursorSettingsPage() {
     setCaCommand(null);
     setWaitingForCaRefresh(true);
   };
+  const saveTab = async () => {
+    if (!tabDraft) return;
+    try {
+      if (tabDraft.mode === "custom" && !tabDraft.address.trim()) throw new Error(t("TAB 服务地址不能为空"));
+      setSavingTab(true);
+      setTabDraft(await api.setTabSettings(tabDraft));
+      message(t("TAB 设置已保存"));
+    } catch (cause) {
+      message(cause instanceof Error ? cause.message : String(cause));
+    } finally {
+      setSavingTab(false);
+    }
+  };
   const content = <CursorCaProvider><CursorCaGate busy={cursorBusy} waitingForRefresh={waitingForCaRefresh} onInitialize={() => void initializeCa()} onRefresh={() => void refreshCa()}>
-    <CursorModelProvider><CursorModelGate onAdd={openNew}>{list}</CursorModelGate></CursorModelProvider>
+    <div className={styles.page}>
+      {tabDraft && <TabSettingsCard settings={tabDraft} saving={savingTab} onChange={setTabDraft} onSave={() => void saveTab()} />}
+      <CursorModelProvider><CursorModelGate onAdd={openNew}>{list}</CursorModelGate></CursorModelProvider>
+    </div>
   </CursorCaGate></CursorCaProvider>;
 
   return <>
     <PageActions>
       <TooltipTrigger label={caReady ? t("添加模型") : t("请先初始化 CA")}><button className={controls.iconButton} aria-label={t("添加模型")} disabled={!caReady || cursorBusy} onClick={openNew}><Icon icon={addIcon} size="1.1em" /></button></TooltipTrigger>
     </PageActions>
-    <PageContent title={t("Cursor 设置")} sections={[{ key: "cursor-settings", estimatedHeight: Math.max(280, models.length * 55 + grouped.length * 62), content }]} />
+    <PageContent title={t("Cursor 设置")} sections={[{ key: "cursor-settings", estimatedHeight: Math.max(430, models.length * 55 + grouped.length * 62 + 145), content }]} />
     <Modal open={draft !== null} title={editing ? t("编辑模型") : t("添加模型")} busy={cursorBusy} onClose={() => setDraft(null)} onSubmit={() => void save()}>
       {draft && <CursorModelEditor draft={draft} providers={providers} editing={editing !== null} modelOptions={modelOptions} discovering={discovering} onChange={setDraft} onDiscover={() => void discover()} />}
     </Modal>
diff --git a/server/src/control/mod.rs b/server/src/control/mod.rs
index 9cd0afe..e50eb47 100644
--- a/server/src/control/mod.rs
+++ b/server/src/control/mod.rs
@@ -155,6 +155,10 @@ pub fn api_router(service: ControlService) -> Router {
             "/__byok-api__/api/settings/proxy",
             get(settings::get_proxy).put(settings::update_proxy),
         )
+        .route(
+            "/__byok-api__/api/settings/tab",
+            get(settings::get_tab).put(settings::update_tab),
+        )
         .route(
             "/__byok-api__/api/harness/cursor/status",
             get(harness::status),
diff --git a/server/src/control/service.rs b/server/src/control/service.rs
index 69bfbbd..24133d3 100644
--- a/server/src/control/service.rs
+++ b/server/src/control/service.rs
@@ -17,7 +17,9 @@ use crate::{
         LlmCallSummary, Overview, ProviderEndpoint, ProviderEndpointInput, ProviderEndpointSecret,
         ProviderModel, ProviderModelInput, ProviderType,
     },
-    store::{PortSettings, ProxySettings, ProxySettingsInput, StatisticsStorage, Store},
+    store::{
+        PortSettings, ProxySettings, ProxySettingsInput, StatisticsStorage, Store, TabSettings,
+    },
     Error, Result,
 };
 
@@ -372,6 +374,14 @@ impl ControlService {
     pub async fn set_proxy_settings(&self, settings: ProxySettingsInput) -> Result<ProxySettings> {
         self.store.set_proxy_settings(settings).await
     }
+
+    pub async fn tab_settings(&self) -> Result<TabSettings> {
+        self.store.tab_settings().await
+    }
+
+    pub async fn set_tab_settings(&self, settings: TabSettings) -> Result<TabSettings> {
+        self.cursor_harness.set_tab_settings(settings).await
+    }
 }
 
 fn official_call(trace: CursorRunTraceSummary) -> CallSummary {
diff --git a/server/src/control/settings.rs b/server/src/control/settings.rs
index 57222c4..bef0ec4 100644
--- a/server/src/control/settings.rs
+++ b/server/src/control/settings.rs
@@ -1,7 +1,9 @@
 use crate::Result;
 use axum::{extract::State, Json};
 
-use crate::store::{PortSettings, ProxySettings, ProxySettingsInput, StatisticsStorage};
+use crate::store::{
+    PortSettings, ProxySettings, ProxySettingsInput, StatisticsStorage, TabSettings,
+};
 
 use super::{ControlService, ObservabilitySettings};
 
@@ -47,3 +49,14 @@ pub async fn update_proxy(
 ) -> Result<Json<ProxySettings>> {
     Ok(Json(service.set_proxy_settings(settings).await?))
 }
+
+pub async fn get_tab(State(service): State<ControlService>) -> Result<Json<TabSettings>> {
+    Ok(Json(service.tab_settings().await?))
+}
+
+pub async fn update_tab(
+    State(service): State<ControlService>,
+    Json(settings): Json<TabSettings>,
+) -> Result<Json<TabSettings>> {
+    Ok(Json(service.set_tab_settings(settings).await?))
+}
diff --git a/server/src/cursor/handlers.rs b/server/src/cursor/handlers.rs
index 18ce7f5..4b292eb 100644
--- a/server/src/cursor/handlers.rs
+++ b/server/src/cursor/handlers.rs
@@ -13,7 +13,7 @@ use crate::{
         observability::CursorTraceRecorder,
         proto::{agent::v1 as agent, aiserver::v1 as ai},
         proxy::{self, CursorProxy},
-        run_sse,
+        run_sse, tab,
     },
     cursor::{CursorParent, CursorSessionRegistry},
     Result,
@@ -70,6 +70,7 @@ fn router_with_proxy(registry: CursorSessionRegistry, proxy: CursorProxy) -> Rou
             post(analytics::bootstrap_statsig),
         )
         .route("/auth/full_stripe_profile", get(account::stripe_profile))
+        .merge(tab::router())
         .route_layer(DefaultBodyLimit::disable())
         .route_layer(RequestDecompressionLayer::new())
         .fallback(proxy::forward)
diff --git a/server/src/cursor/mod.rs b/server/src/cursor/mod.rs
index 8ced27f..6a5a0ee 100644
--- a/server/src/cursor/mod.rs
+++ b/server/src/cursor/mod.rs
@@ -22,6 +22,7 @@ pub mod request;
 pub mod run_sse;
 pub mod session;
 pub mod sessions;
+pub(crate) mod tab;
 pub mod tools;
 mod usage;
 
diff --git a/server/src/cursor/proxy.rs b/server/src/cursor/proxy.rs
index 42f9824..f665ad7 100644
--- a/server/src/cursor/proxy.rs
+++ b/server/src/cursor/proxy.rs
@@ -82,14 +82,34 @@ impl CursorProxy {
 pub async fn forward(
     Extension(proxy): Extension<CursorProxy>,
     request: Request<Body>,
+) -> Result<Response<Body>> {
+    forward_request(&proxy, request, None).await
+}
+
+pub(crate) async fn forward_to_service(
+    proxy: &CursorProxy,
+    request: Request<Body>,
+    service_url: &str,
+) -> Result<Response<Body>> {
+    forward_request(proxy, request, Some(service_url)).await
+}
+
+async fn forward_request(
+    proxy: &CursorProxy,
+    request: Request<Body>,
+    service_url: Option<&str>,
 ) -> Result<Response<Body>> {
     let started = Instant::now();
     let (parts, body) = request.into_parts();
     let path = parts
         .uri
         .path_and_query()
-        .map_or("/", |value| value.as_str());
-    let url = upstream_url(&parts.headers, &proxy.upstream, path)?;
+        .map_or("/", |value| value.as_str())
+        .to_owned();
+    let url = match service_url {
+        Some(service_url) => format!("{}{}", service_url.trim_end_matches('/'), path),
+        None => upstream_url(&parts.headers, &proxy.upstream, &path)?,
+    };
 
     let mut headers = parts.headers;
     headers.remove(UPSTREAM_URL_HEADER);
@@ -239,7 +259,7 @@ mod tests {
     };
     use tower::ServiceExt;
 
-    use super::{forward, CursorProxy};
+    use super::{forward, forward_to_service, CursorProxy};
 
     #[tokio::test]
     async fn preserves_request_and_response() {
@@ -289,4 +309,34 @@ mod tests {
         );
         server.abort();
     }
+
+    #[tokio::test]
+    async fn tab_service_keeps_its_base_path_and_the_original_query() {
+        let upstream = Router::new().route(
+            "/base/aiserver.v1.AiService/StreamCpp",
+            any(|request: Request<Body>| async move {
+                request.uri().path_and_query().unwrap().as_str().to_owned()
+            }),
+        );
+        let listener = tokio::net::TcpListener::bind("127.0.0.1:0").await.unwrap();
+        let address = listener.local_addr().unwrap();
+        let server = tokio::spawn(async move { axum::serve(listener, upstream).await.unwrap() });
+        let proxy = CursorProxy::for_upstream("http://unused.invalid").unwrap();
+
+        let response = forward_to_service(
+            &proxy,
+            Request::post("/aiserver.v1.AiService/StreamCpp?client=cursor")
+                .body(Body::empty())
+                .unwrap(),
+            &format!("http://{address}/base"),
+        )
+        .await
+        .unwrap();
+
+        assert_eq!(
+            to_bytes(response.into_body(), usize::MAX).await.unwrap(),
+            "/base/aiserver.v1.AiService/StreamCpp?client=cursor"
+        );
+        server.abort();
+    }
 }
diff --git a/server/src/cursor/tab.rs b/server/src/cursor/tab.rs
new file mode 100644
index 0000000..00f0e22
--- /dev/null
+++ b/server/src/cursor/tab.rs
@@ -0,0 +1,67 @@
+use axum::{
+    body::Body,
+    extract::{Extension, State},
+    http::{Request, Response},
+    routing::post,
+    Router,
+};
+
+use crate::{
+    cursor::{proxy, CursorSessionRegistry},
+    Result,
+};
+
+pub const TAB_PATHS: [&str; 17] = [
+    "/aiserver.v1.AiService/StreamCpp",
+    "/aiserver.v1.AiService/StreamNextCursorPrediction",
+    "/aiserver.v1.AiService/GetCppEditClassification",
+    "/aiserver.v1.AiService/RefreshTabContext",
+    "/aiserver.v1.AiService/CppConfig",
+    "/aiserver.v1.AiService/CppEditHistoryStatus",
+    "/aiserver.v1.AiService/CppAppend",
+    "/aiserver.v1.AiService/CppEditHistoryAppend",
+    "/aiserver.v1.AiService/ReportAiCodeChangeMetrics",
+    "/aiserver.v1.AiService/WriteGitCommitMessage",
+    "/aiserver.v1.AiService/WriteGitBranchName",
+    "/aiserver.v1.CppService/AvailableModels",
+    "/aiserver.v1.CppService/RecordCppFate",
+    "/aiserver.v1.FileSyncService/FSSyncFile",
+    "/aiserver.v1.FileSyncService/FSIsEnabledForUser",
+    "/aiserver.v1.FileSyncService/FSConfig",
+    "/aiserver.v1.FileSyncService/FSUploadFile",
+];
+
+pub fn is_tab_path(path: &str) -> bool {
+    TAB_PATHS.contains(&path)
+}
+
+pub fn router() -> Router<CursorSessionRegistry> {
+    TAB_PATHS.into_iter().fold(Router::new(), |router, path| {
+        router.route(path, post(forward))
+    })
+}
+
+async fn forward(
+    State(registry): State<CursorSessionRegistry>,
+    Extension(upstream): Extension<proxy::CursorProxy>,
+    request: Request<Body>,
+) -> Result<Response<Body>> {
+    let settings = registry.store().tab_settings().await?;
+    match settings.service_url() {
+        Some(service_url) => proxy::forward_to_service(&upstream, request, service_url).await,
+        None => proxy::forward(Extension(upstream), request).await,
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn matches_only_legacy_tab_routes() {
+        assert_eq!(TAB_PATHS.len(), 17);
+        assert!(is_tab_path("/aiserver.v1.AiService/StreamCpp"));
+        assert!(is_tab_path("/aiserver.v1.FileSyncService/FSUploadFile"));
+        assert!(!is_tab_path("/aiserver.v1.AiService/AvailableModels"));
+    }
+}
diff --git a/server/src/harness/mod.rs b/server/src/harness/mod.rs
index 912f199..fab6baa 100644
--- a/server/src/harness/mod.rs
+++ b/server/src/harness/mod.rs
@@ -9,7 +9,10 @@ use parking_lot::RwLock;
 use serde::{Deserialize, Serialize};
 use tokio::sync::Mutex;
 
-use crate::{store::Store, Error, Result};
+use crate::{
+    store::{Store, TabMode, TabSettings},
+    Error, Result,
+};
 
 use self::{ca::CaManager, proxy::ProxyRuntime};
 
@@ -65,6 +68,7 @@ struct Inner {
     ca: CaManager,
     ca_initialization: Mutex<()>,
     backend_addr: RwLock<Option<SocketAddr>>,
+    tab_mode: Arc<RwLock<TabMode>>,
     proxy: Mutex<ProxyRuntime>,
 }
 
@@ -76,6 +80,7 @@ impl CursorHarness {
                 ca: CaManager::managed()?,
                 ca_initialization: Mutex::new(()),
                 backend_addr: RwLock::new(None),
+                tab_mode: Arc::new(RwLock::new(TabMode::default())),
                 proxy: Mutex::new(ProxyRuntime::default()),
             }),
         })
@@ -138,6 +143,12 @@ impl CursorHarness {
         self.status().await
     }
 
+    pub async fn set_tab_settings(&self, settings: TabSettings) -> Result<TabSettings> {
+        let saved = self.inner.store.set_tab_settings(settings).await?;
+        *self.inner.tab_mode.write() = saved.mode;
+        Ok(saved)
+    }
+
     async fn enable(&self) -> Result<()> {
         if !matches!(self.inner.ca.state()?, CaState::Ready) {
             return Err(Error::Config(
@@ -158,7 +169,15 @@ impl CursorHarness {
         }
         let ca = self.inner.ca.load()?;
         let requested_port = self.inner.store.port_settings().await?.proxy_port;
-        let (url, actual_port) = proxy.start(backend_addr, ca, requested_port).await?;
+        *self.inner.tab_mode.write() = self.inner.store.tab_settings().await?.mode;
+        let (url, actual_port) = proxy
+            .start(
+                backend_addr,
+                ca,
+                requested_port,
+                self.inner.tab_mode.clone(),
+            )
+            .await?;
         if let Err(error) = self.inner.store.set_proxy_port(actual_port).await {
             proxy.stop().await;
             return Err(error);
diff --git a/server/src/harness/proxy.rs b/server/src/harness/proxy.rs
index 41dd2e3..40a408c 100644
--- a/server/src/harness/proxy.rs
+++ b/server/src/harness/proxy.rs
@@ -1,4 +1,4 @@
-use std::net::SocketAddr;
+use std::{net::SocketAddr, sync::Arc};
 
 use hudsucker::{
     certificate_authority::RcgenAuthority,
@@ -8,7 +8,13 @@ use hudsucker::{
 };
 use tokio::{net::TcpListener, sync::oneshot, task::JoinHandle};
 
-use crate::{cursor::proxy::UPSTREAM_URL_HEADER, Error, Result};
+use parking_lot::RwLock;
+
+use crate::{
+    cursor::{proxy::UPSTREAM_URL_HEADER, tab::is_tab_path},
+    store::TabMode,
+    Error, Result,
+};
 
 use super::ca::LoadedCa;
 
@@ -33,6 +39,7 @@ impl ProxyRuntime {
         backend: SocketAddr,
         ca: LoadedCa,
         requested_port: u16,
+        tab_mode: Arc<RwLock<TabMode>>,
     ) -> Result<(String, u16)> {
         if let Some(url) = self.url() {
             return Ok((url, self.port.unwrap_or_default()));
@@ -45,7 +52,7 @@ impl ProxyRuntime {
             .with_listener(listener)
             .with_ca(authority)
             .with_rustls_connector(aws_lc_rs::default_provider())
-            .with_http_handler(CursorRelay { backend })
+            .with_http_handler(CursorRelay { backend, tab_mode })
             .with_graceful_shutdown(async move {
                 let _ = done.await;
             })
@@ -89,6 +96,7 @@ async fn bind_proxy_listener(requested_port: u16) -> Result<TcpListener> {
 #[derive(Clone)]
 struct CursorRelay {
     backend: SocketAddr,
+    tab_mode: Arc<RwLock<TabMode>>,
 }
 
 impl HttpHandler for CursorRelay {
@@ -98,7 +106,8 @@ impl HttpHandler for CursorRelay {
         mut request: Request<Body>,
     ) -> RequestOrResponse {
         let original = request.uri().clone();
-        if is_cursor_host(original.host().unwrap_or_default()) && is_local_path(original.path()) {
+        let locally_routed = should_route_locally(original.path(), *self.tab_mode.read());
+        if is_cursor_host(original.host().unwrap_or_default()) && locally_routed {
             if let Ok(value) = original.to_string().parse() {
                 request.headers_mut().insert(UPSTREAM_URL_HEADER, value);
             }
@@ -157,6 +166,10 @@ fn is_local_path(path: &str) -> bool {
     )
 }
 
+fn should_route_locally(path: &str, tab_mode: TabMode) -> bool {
+    is_local_path(path) || (is_tab_path(path) && tab_mode != TabMode::Direct)
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -179,5 +192,17 @@ mod tests {
             "/aiserver.v1.AnalyticsService/BootstrapStatsig"
         ));
         assert!(!is_local_path("/unrelated"));
+        assert!(should_route_locally(
+            "/aiserver.v1.AiService/StreamCpp",
+            TabMode::Public
+        ));
+        assert!(should_route_locally(
+            "/aiserver.v1.AiService/StreamCpp",
+            TabMode::Custom
+        ));
+        assert!(!should_route_locally(
+            "/aiserver.v1.AiService/StreamCpp",
+            TabMode::Direct
+        ));
     }
 }
diff --git a/server/src/store/settings.rs b/server/src/store/settings.rs
index 3edc955..d161cb4 100644
--- a/server/src/store/settings.rs
+++ b/server/src/store/settings.rs
@@ -6,8 +6,11 @@ use super::{now_ms, Store};
 
 const PORT_SETTINGS_KEY: &str = "network_ports";
 const PROXY_SETTINGS_KEY: &str = "outbound_proxy";
+const TAB_SETTINGS_KEY: &str = "cursor_tab";
 const INSTALLATION_ID_KEY: &str = "installation_id";
 
+pub const PUBLIC_TAB_SERVICE_URL: &str = "https://tab.leokun.cn";
+
 #[derive(Clone, Copy, Debug, Default, Deserialize, PartialEq, Eq, Serialize)]
 pub struct PortSettings {
     pub proxy_port: u16,
@@ -28,6 +31,31 @@ impl ProxyMode {
     }
 }
 
+#[derive(Clone, Copy, Debug, Default, Deserialize, PartialEq, Eq, Serialize)]
+#[serde(rename_all = "snake_case")]
+pub enum TabMode {
+    #[default]
+    Public,
+    Direct,
+    Custom,
+}
+
+#[derive(Clone, Debug, Default, Deserialize, PartialEq, Eq, Serialize)]
+pub struct TabSettings {
+    pub mode: TabMode,
+    pub address: String,
+}
+
+impl TabSettings {
+    pub fn service_url(&self) -> Option<&str> {
+        match self.mode {
+            TabMode::Public => Some(PUBLIC_TAB_SERVICE_URL),
+            TabMode::Direct => None,
+            TabMode::Custom => Some(&self.address),
+        }
+    }
+}
+
 #[derive(Clone, Debug, Default, Deserialize, PartialEq, Eq, Serialize)]
 pub struct ProxySettingsInput {
     pub mode: ProxyMode,
@@ -139,6 +167,47 @@ impl Store {
         self.proxy_settings().await
     }
 
+    pub async fn tab_settings(&self) -> Result<TabSettings> {
+        let value = sqlx::query_scalar::<_, String>(
+            "SELECT value_json FROM service_settings WHERE setting_key = ?",
+        )
+        .bind(TAB_SETTINGS_KEY)
+        .fetch_optional(&self.pool)
+        .await?;
+        value
+            .map(|value| serde_json::from_str(&value).map_err(Into::into))
+            .unwrap_or_else(|| Ok(TabSettings::default()))
+    }
+
+    pub async fn set_tab_settings(&self, mut settings: TabSettings) -> Result<TabSettings> {
+        settings.address = settings.address.trim().trim_end_matches('/').to_owned();
+        if settings.mode == TabMode::Custom {
+            let parsed = url::Url::parse(&settings.address).map_err(|error| {
+                crate::Error::Config(format!("invalid TAB service address: {error}"))
+            })?;
+            if !matches!(parsed.scheme(), "http" | "https") {
+                return Err(crate::Error::Config(
+                    "TAB service address must use http or https".into(),
+                ));
+            }
+            if parsed.host_str().is_none()
+                || parsed.query().is_some()
+                || parsed.fragment().is_some()
+            {
+                return Err(crate::Error::Config(
+                    "TAB service address must be a base URL without a query or fragment".into(),
+                ));
+            }
+        }
+        sqlx::query("INSERT INTO service_settings(setting_key, value_json, updated_at_ms) VALUES (?, ?, ?) ON CONFLICT(setting_key) DO UPDATE SET value_json = excluded.value_json, updated_at_ms = excluded.updated_at_ms")
+            .bind(TAB_SETTINGS_KEY)
+            .bind(serde_json::to_string(&settings)?)
+            .bind(now_ms())
+            .execute(&self.pool)
+            .await?;
+        Ok(settings)
+    }
+
     pub async fn port_settings(&self) -> Result<PortSettings> {
         let value = sqlx::query_scalar::<_, String>(
             "SELECT value_json FROM service_settings WHERE setting_key = ?",
@@ -244,4 +313,28 @@ mod tests {
             "secret"
         );
     }
+
+    #[tokio::test]
+    async fn tab_settings_default_to_public_and_validate_custom_urls() {
+        let store = Store::connect("sqlite::memory:").await.unwrap();
+        assert_eq!(store.tab_settings().await.unwrap(), TabSettings::default());
+
+        let saved = store
+            .set_tab_settings(TabSettings {
+                mode: TabMode::Custom,
+                address: " https://tab.example.com/base/ ".into(),
+            })
+            .await
+            .unwrap();
+        assert_eq!(saved.address, "https://tab.example.com/base");
+        assert_eq!(store.tab_settings().await.unwrap(), saved);
+
+        assert!(store
+            .set_tab_settings(TabSettings {
+                mode: TabMode::Custom,
+                address: "file:///tmp/tab".into(),
+            })
+            .await
+            .is_err());
+    }
 }