diff --git a/README.md b/README.md
index 3200a4a..0ae53f4 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@
 |---|------|------|
 | 1 | key 用量查询 | 按时间范围查模型请求日志与用量；作者全员视角在管理面总览，成员视角在成员视图 |
 | 2 | key 登记 | 管理通道手动登记：入库并加入轮询；生命周期为手动启停（引擎只读 `status`） |
-| 3 | 支付事实登记 | 订阅权益与充值入账分表登记；对成员完全公开透明 |
+| 3 | 支付事实登记 | 订阅权益与充值入账分表登记；`billing_domain` 标账本域，成员同域可见 |
 | 4 | 多维统计 | 按成员 / key / 计费来源 / 模型的任意时段聚合 |
 
 完整需求范围（含刻意不做的部分）见 [`docs/design/需求清单.md`](docs/design/需求清单.md)。
diff --git a/apps/server/src/routes/admin-keys.ts b/apps/server/src/routes/admin-keys.ts
index c8659d6..f1691f2 100644
--- a/apps/server/src/routes/admin-keys.ts
+++ b/apps/server/src/routes/admin-keys.ts
@@ -30,6 +30,7 @@ function toKeyItem(row: ApiKeyRow & { member_name?: string | null }): KeyItem {
     status: row.status as "active" | "disabled",
     member_id: row.member_id,
     member_name: row.member_name ?? null,
+    billing_domain: row.billing_domain,
     registered_at: toUnixSec(row.registered_at)!,
     log_synced_at: toUnixSec(row.log_synced_at),
     usage_synced_at: toUnixSec(row.usage_synced_at),
@@ -59,6 +60,7 @@ export function adminKeyRoutes() {
         query: z.object({
           member_id: z.string().optional(),
           status: z.enum(["active", "disabled"]).optional(),
+          billing_domain: z.string().optional(),
           recent_failed: z.enum(["true", "false"]).optional(),
         }),
       },
@@ -77,12 +79,15 @@ export function adminKeyRoutes() {
       const filter: {
         member_id?: number | "unassigned";
         status?: string;
+        billing_domain?: string | "none";
       } = {};
       if (q.member_id === "unassigned") filter.member_id = "unassigned";
       else if (q.member_id) filter.member_id = Number(q.member_id);
       if (q.status === "active" || q.status === "disabled") {
         filter.status = q.status;
       }
+      if (q.billing_domain === "none") filter.billing_domain = "none";
+      else if (q.billing_domain) filter.billing_domain = q.billing_domain;
       let rows = await c.get("repos").keys.listAll(filter);
       if (q.recent_failed === "true") {
         const snap = await c.get("repos").engine.getSnapshot();
@@ -144,6 +149,10 @@ export function adminKeyRoutes() {
         }
         member_id = n;
       }
+      let billing_domain: string | null = null;
+      if (typeof body?.billing_domain === "string" && body.billing_domain.trim()) {
+        billing_domain = body.billing_domain.trim();
+      }
       if (!sk_key || !sk_key.startsWith("sk-")) {
         return jsonError(
           c,
@@ -208,6 +217,7 @@ export function adminKeyRoutes() {
         key_hash,
         key_ciphertext,
         member_id,
+        billing_domain,
         token_name: usage.name ?? "",
       });
       // 首次登记即写入上游额度字段（表设计 §4：首轮日志同步异步补）
@@ -241,7 +251,7 @@ export function adminKeyRoutes() {
     createRoute({
       method: "patch",
       path: "/keys/{id}",
-      summary: "启停 / 归属变更",
+      summary: "启停 / 归属 / 账本域变更",
       description: "部分更新；审计按实际变更字段各落一行",
       tags: ["Key 管理"],
       security: [{ adminSession: [] }],
@@ -301,6 +311,19 @@ export function adminKeyRoutes() {
           });
         }
       }
+      if (body && "billing_domain" in body) {
+        let nextDomain: string | null = null;
+        if (typeof body.billing_domain === "string" && body.billing_domain.trim()) {
+          nextDomain = body.billing_domain.trim();
+        }
+        if (nextDomain !== before.billing_domain) {
+          patch.billing_domain = nextDomain;
+          actions.push({
+            action: "key.reassign",
+            summary: `key #${before.id} · 账本域变更`,
+          });
+        }
+      }
       if (Object.keys(patch).length === 0) {
         return jsonError(
           c,
diff --git a/apps/server/src/routes/admin-subscriptions.ts b/apps/server/src/routes/admin-subscriptions.ts
index 748e463..6153e77 100644
--- a/apps/server/src/routes/admin-subscriptions.ts
+++ b/apps/server/src/routes/admin-subscriptions.ts
@@ -37,6 +37,7 @@ function toSubscriptionItem(
     quota_usd,
     paid_amount: row.paid_amount,
     paid_at: toUnixSec(row.paid_at),
+    billing_domain: row.billing_domain,
     remark: row.remark,
     created_at: toUnixSec(row.created_at)!,
   };
@@ -52,6 +53,7 @@ function parseSubBody(body: z.infer<typeof createSubscriptionBodySchema>):
         quota_granted: number;
         paid_amount: number | null;
         paid_at: Date | null;
+        billing_domain: string | null;
         remark: string;
       };
     } {
@@ -74,6 +76,10 @@ function parseSubBody(body: z.infer<typeof createSubscriptionBodySchema>):
       quota_granted: body.quota_granted,
       paid_amount: body.paid_amount ?? null,
       paid_at: body.paid_at ? new Date(body.paid_at) : null,
+      billing_domain:
+        typeof body.billing_domain === "string" && body.billing_domain.trim()
+          ? body.billing_domain.trim()
+          : null,
       remark: body.remark ?? "",
     },
   };
@@ -90,6 +96,11 @@ export function adminSubscriptionRoutes() {
       summary: "订阅权益清单",
       tags: ["支付记录"],
       security: [{ adminSession: [] }],
+      request: {
+        query: z.object({
+          billing_domain: z.string().optional(),
+        }),
+      },
       responses: {
         200: {
           description: "subscription 数组",
@@ -103,7 +114,14 @@ export function adminSubscriptionRoutes() {
     async (c) => {
       const repos = c.get("repos");
       const timeline = resolveQpuTimeline(await repos.qpu.listTimeline());
-      const rows = await repos.subscriptions.listAll();
+      const q = c.req.query();
+      const filter =
+        q.billing_domain === "none"
+          ? { billing_domain: "none" as const }
+          : q.billing_domain
+            ? { billing_domain: q.billing_domain }
+            : undefined;
+      const rows = await repos.subscriptions.listAll(filter);
       return c.json(
         rows.map((row) =>
           toSubscriptionItem(
diff --git a/apps/server/src/routes/admin-topups.ts b/apps/server/src/routes/admin-topups.ts
index 15055ce..932e0f8 100644
--- a/apps/server/src/routes/admin-topups.ts
+++ b/apps/server/src/routes/admin-topups.ts
@@ -36,6 +36,7 @@ function toTopupItem(row: TopupRow, qpu: number): TopupItem {
     paid_at: toUnixSec(row.paid_at)!,
     quota_derived,
     quota_usd: quotaToUsdStr(quota_derived, qpu),
+    billing_domain: row.billing_domain,
     remark: row.remark,
     created_at: toUnixSec(row.created_at)!,
   };
@@ -53,6 +54,7 @@ function parseTopupBody(body: z.infer<typeof createTopupBodySchema>):
         payment_provider: string | null;
         status: string | null;
         paid_at: Date;
+        billing_domain: string | null;
         remark: string;
       };
     } {
@@ -71,6 +73,10 @@ function parseTopupBody(body: z.infer<typeof createTopupBodySchema>):
       payment_provider: body.payment_provider ?? null,
       status: body.status ?? "success",
       paid_at: new Date(body.paid_at),
+      billing_domain:
+        typeof body.billing_domain === "string" && body.billing_domain.trim()
+          ? body.billing_domain.trim()
+          : null,
       remark: body.remark ?? "",
     },
   };
@@ -87,6 +93,11 @@ export function adminTopupRoutes() {
       summary: "充值入账清单",
       tags: ["支付记录"],
       security: [{ adminSession: [] }],
+      request: {
+        query: z.object({
+          billing_domain: z.string().optional(),
+        }),
+      },
       responses: {
         200: {
           description: "topup 数组",
@@ -100,7 +111,14 @@ export function adminTopupRoutes() {
     async (c) => {
       const repos = c.get("repos");
       const timeline = resolveQpuTimeline(await repos.qpu.listTimeline());
-      const rows = await repos.topups.listAll();
+      const q = c.req.query();
+      const filter =
+        q.billing_domain === "none"
+          ? { billing_domain: "none" as const }
+          : q.billing_domain
+            ? { billing_domain: q.billing_domain }
+            : undefined;
+      const rows = await repos.topups.listAll(filter);
       return c.json(
         rows.map((row) => toTopupItem(row, qpuAt(row.paid_at, timeline))),
         200,
diff --git a/apps/server/src/routes/member-view.ts b/apps/server/src/routes/member-view.ts
index 6648b65..bb52887 100644
--- a/apps/server/src/routes/member-view.ts
+++ b/apps/server/src/routes/member-view.ts
@@ -71,7 +71,7 @@ export function memberViewRoutes() {
       path: "/overview",
       summary: "单页聚合",
       description:
-        "名下 key 的 type=2 用量 + 来源分解 + 支付参数（完全公开透明）",
+        "名下 key 的 type=2 用量 + 来源分解 + 支付参数（同账本域内可见）",
       tags: ["成员视图"],
       security: [{ memberToken: [] }],
       request: {
@@ -159,8 +159,13 @@ export function memberViewRoutes() {
         usage: sumUsage(v.rows, timeline),
       }));
 
-      // 「该时段涉及」：订阅 = 日志出现过的 subscription_id ∪ 进行中；充值 = paid_at ∈ [from,to)
+      // 「该时段涉及」：订阅 = 日志出现过的 subscription_id ∪ 我域内进行中；
+      // 充值 = 我域内且 paid_at ∈ [from,to)。未标域默认藏（仅「涉及我日志」的订阅例外）。
       const { quotaToUsdStr, qpuAt } = await import("@new-api-key-usage/core");
+      const myDomains = new Set<string>();
+      for (const k of allKeys) {
+        if (k.billing_domain) myDomains.add(k.billing_domain);
+      }
       const subRows = await repos.subscriptions.listAll();
       const usedSubIds = new Set(
         rows.map((x) => x.subscription_id).filter((v): v is number => v != null),
@@ -172,8 +177,11 @@ export function memberViewRoutes() {
           s.period_end > new Date() ||
           (s.period_start <= range.to &&
             (s.period_end ?? new Date()) >= range.from);
-        const involved = usedSubIds.has(s.subscription_id) || ongoing;
-        if (!involved) continue;
+        const involved = usedSubIds.has(s.subscription_id);
+        const inMyDomain =
+          s.billing_domain != null && myDomains.has(s.billing_domain);
+        // 涉及我日志的始终可见（事实直连）；其余仅我域内进行中可见
+        if (!involved && !(ongoing && inMyDomain)) continue;
         const qpu = qpuAt(s.paid_at ?? s.created_at, timeline);
         subscriptionsOut.push({
           id: s.id,
@@ -184,6 +192,7 @@ export function memberViewRoutes() {
           quota_usd: quotaToUsdStr(s.quota_granted, qpu),
           paid_amount: s.paid_amount,
           paid_at: toUnixSec(s.paid_at),
+          billing_domain: s.billing_domain,
           remark: s.remark,
           created_at: toUnixSec(s.created_at)!,
         });
@@ -191,6 +200,7 @@ export function memberViewRoutes() {
       const topupRows = await repos.topups.listAll();
       const topupsOut = [];
       for (const t of topupRows) {
+        if (t.billing_domain == null || !myDomains.has(t.billing_domain)) continue;
         if (!(t.paid_at >= range.from && t.paid_at < range.to)) continue;
         const qpu = qpuAt(t.paid_at, timeline);
         const quota_derived = Math.round(t.amount * qpu);
@@ -204,6 +214,7 @@ export function memberViewRoutes() {
           payment_provider: t.payment_provider,
           status: t.status,
           paid_at: toUnixSec(t.paid_at)!,
+          billing_domain: t.billing_domain,
           quota_derived,
           quota_usd: quotaToUsdStr(quota_derived, qpu),
           remark: t.remark,
diff --git a/apps/web/src/api/admin/keys.ts b/apps/web/src/api/admin/keys.ts
index 225f091..8f3b1fb 100644
--- a/apps/web/src/api/admin/keys.ts
+++ b/apps/web/src/api/admin/keys.ts
@@ -4,6 +4,7 @@ import { adminHttp } from "../http.ts";
 export type KeyListFilters = {
   member_id?: number | "unassigned";
   status?: "active" | "disabled";
+  billing_domain?: string | "none";
   recent_failed?: boolean;
 };
 
@@ -15,6 +16,7 @@ export async function fetchKeys(filters: KeyListFilters = {}): Promise<KeyItem[]
 export async function registerKey(body: {
   sk_key: string;
   member_id?: number | null;
+  billing_domain?: string | null;
 }): Promise<KeyItem> {
   const { data } = await adminHttp.post<KeyItem>("/keys", body);
   return data;
@@ -22,7 +24,11 @@ export async function registerKey(body: {
 
 export async function patchKey(
   id: number,
-  body: { status?: "active" | "disabled"; member_id?: number | null },
+  body: {
+    status?: "active" | "disabled";
+    member_id?: number | null;
+    billing_domain?: string | null;
+  },
 ): Promise<KeyItem> {
   const { data } = await adminHttp.patch<KeyItem>(`/keys/${id}`, body);
   return data;
diff --git a/apps/web/src/api/admin/subscriptions.ts b/apps/web/src/api/admin/subscriptions.ts
index c82780c..8a301dd 100644
--- a/apps/web/src/api/admin/subscriptions.ts
+++ b/apps/web/src/api/admin/subscriptions.ts
@@ -8,11 +8,16 @@ export type SubscriptionBody = {
   quota_granted: number;
   paid_amount?: number | null;
   paid_at?: string | null;
+  billing_domain?: string | null;
   remark?: string;
 };
 
-export async function fetchSubscriptions(): Promise<SubscriptionItem[]> {
-  const { data } = await adminHttp.get<SubscriptionItem[]>("/subscriptions");
+export async function fetchSubscriptions(filter?: {
+  billing_domain?: string | "none";
+}): Promise<SubscriptionItem[]> {
+  const { data } = await adminHttp.get<SubscriptionItem[]>("/subscriptions", {
+    params: filter,
+  });
   return data;
 }
 
diff --git a/apps/web/src/api/admin/topups.ts b/apps/web/src/api/admin/topups.ts
index efa0cdb..dc16867 100644
--- a/apps/web/src/api/admin/topups.ts
+++ b/apps/web/src/api/admin/topups.ts
@@ -10,11 +10,16 @@ export type TopupBody = {
   payment_provider?: string | null;
   status?: string | null;
   paid_at: string;
+  billing_domain?: string | null;
   remark?: string;
 };
 
-export async function fetchTopups(): Promise<TopupItem[]> {
-  const { data } = await adminHttp.get<TopupItem[]>("/topups");
+export async function fetchTopups(filter?: {
+  billing_domain?: string | "none";
+}): Promise<TopupItem[]> {
+  const { data } = await adminHttp.get<TopupItem[]>("/topups", {
+    params: filter,
+  });
   return data;
 }
 
diff --git a/apps/web/src/components/admin/payment-form-modal.vue b/apps/web/src/components/admin/payment-form-modal.vue
index f6fa017..bf4d28b 100644
--- a/apps/web/src/components/admin/payment-form-modal.vue
+++ b/apps/web/src/components/admin/payment-form-modal.vue
@@ -16,6 +16,7 @@ import type {
   PlatformTopup,
 } from "@/api/admin/platform.ts";
 import {
+  useBillingDomainOptions,
   useCreateSubscription,
   useCreateTopup,
   useQpuLatest,
@@ -78,6 +79,8 @@ const registeredTopIds = computed(
       .filter((v): v is number => v != null),
 );
 
+const domainOptions = useBillingDomainOptions();
+
 const subForm = reactive({
   subscription_id: null as number | null,
   period_start: null as Dayjs | null,
@@ -87,6 +90,7 @@ const subForm = reactive({
   quota_usd: null as number | null,
   paid_amount: null as number | null,
   paid_at: null as Dayjs | null,
+  billing_domain: "",
   remark: "",
 });
 
@@ -98,6 +102,7 @@ const topForm = reactive({
   payment_method: "",
   payment_provider: "",
   paid_at: null as Dayjs | null,
+  billing_domain: "",
   remark: "",
 });
 
@@ -111,6 +116,7 @@ function resetSub() {
     quota_usd: null,
     paid_amount: null,
     paid_at: null,
+    billing_domain: "",
     remark: "",
   });
 }
@@ -124,6 +130,7 @@ function resetTop() {
     payment_method: "",
     payment_provider: "",
     paid_at: null,
+    billing_domain: "",
     remark: "",
   });
 }
@@ -147,6 +154,7 @@ watch(
       subForm.paid_amount = s.paid_amount;
       subForm.paid_at =
         s.paid_at != null ? unixToBeijingWall(s.paid_at) : null;
+      subForm.billing_domain = s.billing_domain ?? "";
       subForm.remark = s.remark;
     } else {
       // 订阅的 paid_at 是「套餐付款时刻」，可空——不默认填今天
@@ -162,6 +170,7 @@ watch(
       topForm.payment_method = t.payment_method ?? "";
       topForm.payment_provider = t.payment_provider ?? "";
       topForm.paid_at = unixToBeijingWall(t.paid_at);
+      topForm.billing_domain = t.billing_domain ?? "";
       topForm.remark = t.remark;
     } else {
       resetTop();
@@ -239,6 +248,7 @@ async function onSubmit() {
         quota_granted: quota,
         paid_amount: subForm.paid_amount,
         paid_at: iso(subForm.paid_at),
+        billing_domain: subForm.billing_domain.trim() || null,
         remark: subForm.remark,
       };
       if (props.editingSub) {
@@ -268,6 +278,7 @@ async function onSubmit() {
         payment_provider: topForm.payment_provider || null,
         status: props.editingTop?.status ?? "success",
         paid_at: iso(topForm.paid_at)!,
+        billing_domain: topForm.billing_domain.trim() || null,
         remark: topForm.remark,
       };
       if (props.editingTop) {
@@ -381,6 +392,13 @@ async function onSubmit() {
           社交层付款事实：金额数值、币种由你们约定；未知可留空。登记时刻由系统另记
         </div>
       </a-form-item>
+      <a-form-item label="账本域">
+        <a-auto-complete
+          v-model:value="subForm.billing_domain"
+          :options="domainOptions"
+          allow-clear
+        />
+      </a-form-item>
       <a-form-item label="备注">
         <a-input v-model:value="subForm.remark" />
       </a-form-item>
@@ -432,6 +450,13 @@ async function onSubmit() {
           style="width: 120px; margin-left: 8px"
         />
       </a-form-item>
+      <a-form-item label="账本域">
+        <a-auto-complete
+          v-model:value="topForm.billing_domain"
+          :options="domainOptions"
+          allow-clear
+        />
+      </a-form-item>
       <a-form-item label="备注">
         <a-input v-model:value="topForm.remark" />
       </a-form-item>
diff --git a/apps/web/src/components/admin/register-key-modal.vue b/apps/web/src/components/admin/register-key-modal.vue
index ab7da6c..8689ebd 100644
--- a/apps/web/src/components/admin/register-key-modal.vue
+++ b/apps/web/src/components/admin/register-key-modal.vue
@@ -5,7 +5,7 @@
 import { computed, reactive, ref, watch } from "vue";
 import type { MemberItem } from "@new-api-key-usage/core";
 import type { ApiError } from "@/api/http.ts";
-import { useCreateMember, useRegisterKey } from "@/queries/admin.ts";
+import { useCreateMember, useRegisterKey, useBillingDomainOptions } from "@/queries/admin.ts";
 import MemberTokenModal from "@/components/admin/member-token-modal.vue";
 
 const props = defineProps<{
@@ -20,10 +20,12 @@ const emit = defineEmits<{
 
 const register = useRegisterKey();
 const createMember = useCreateMember();
+const domainOptions = useBillingDomainOptions();
 
 const form = reactive({
   sk_key: "",
   member_id: null as number | "unassigned" | null,
+  billing_domain: "",
 });
 const resultMsg = ref<{ type: "success" | "error" | "warning"; text: string } | null>(
   null,
@@ -41,6 +43,7 @@ watch(
     if (!v) {
       form.sk_key = "";
       form.member_id = null;
+      form.billing_domain = "";
       resultMsg.value = null;
       showNewMember.value = false;
       newMemberName.value = "";
@@ -67,6 +70,7 @@ async function onSubmit() {
         form.member_id === "unassigned" || form.member_id == null
           ? null
           : form.member_id,
+      billing_domain: form.billing_domain.trim() || null,
     });
     resultMsg.value = {
       type: "success",
@@ -170,6 +174,13 @@ async function onCreateMember() {
           + 新建成员
         </a-button>
       </a-form-item>
+      <a-form-item label="账本域">
+        <a-auto-complete
+          v-model:value="form.billing_domain"
+          :options="domainOptions"
+          allow-clear
+        />
+      </a-form-item>
       <a-form-item v-if="showNewMember" label="新成员名称">
         <a-input
           v-model:value="newMemberName"
diff --git a/apps/web/src/queries/admin.ts b/apps/web/src/queries/admin.ts
index 5a8af0a..9c43691 100644
--- a/apps/web/src/queries/admin.ts
+++ b/apps/web/src/queries/admin.ts
@@ -1,3 +1,4 @@
+import { computed, type ComputedRef } from "vue";
 import { useMutation, useQuery, useQueryClient } from "@tanstack/vue-query";
 import {
   fetchKeys,
@@ -84,7 +85,11 @@ export function usePatchKey() {
       body,
     }: {
       id: number;
-      body: { status?: "active" | "disabled"; member_id?: number | null };
+      body: {
+        status?: "active" | "disabled";
+        member_id?: number | null;
+        billing_domain?: string | null;
+      };
     }) => patchKey(id, body),
     onSuccess: () => {
       void qc.invalidateQueries({ queryKey: ["admin", "keys"] });
@@ -106,7 +111,7 @@ export function useAdminLogs(
 export function useSubscriptions() {
   return useQuery({
     queryKey: qk.admin.subscriptions(),
-    queryFn: fetchSubscriptions,
+    queryFn: () => fetchSubscriptions(),
     staleTime: 0,
   });
 }
@@ -145,7 +150,7 @@ export function useDeleteSubscription() {
 export function useTopups() {
   return useQuery({
     queryKey: qk.admin.topups(),
-    queryFn: fetchTopups,
+    queryFn: () => fetchTopups(),
     staleTime: 0,
   });
 }
@@ -250,3 +255,25 @@ export function useAuditLogs(
     queryFn: () => fetchAuditLogs(params()),
   });
 }
+
+/** 账本域联想：keys ∪ 订阅 ∪ 充值 已出现过的值（不强制） */
+export function useBillingDomainOptions(): ComputedRef<
+  Array<{ value: string }>
+> {
+  const keysQuery = useKeys(() => ({}));
+  const subsQuery = useSubscriptions();
+  const topupsQuery = useTopups();
+  return computed(() => {
+    const set = new Set<string>();
+    for (const k of keysQuery.data.value ?? []) {
+      if (k.billing_domain) set.add(k.billing_domain);
+    }
+    for (const s of subsQuery.data.value ?? []) {
+      if (s.billing_domain) set.add(s.billing_domain);
+    }
+    for (const t of topupsQuery.data.value ?? []) {
+      if (t.billing_domain) set.add(t.billing_domain);
+    }
+    return [...set].sort().map((value) => ({ value }));
+  });
+}
diff --git a/apps/web/src/views/admin/keys-view.vue b/apps/web/src/views/admin/keys-view.vue
index 14daf35..dfeedf2 100644
--- a/apps/web/src/views/admin/keys-view.vue
+++ b/apps/web/src/views/admin/keys-view.vue
@@ -11,7 +11,7 @@ import type { ApiError } from "@/api/http.ts";
 import PageHeader from "@/components/common/page-header.vue";
 import TableRefresh from "@/components/common/table-refresh.vue";
 import RegisterKeyModal from "@/components/admin/register-key-modal.vue";
-import { useEngine, useKeys, useMembers, usePatchKey } from "@/queries/admin.ts";
+import { useEngine, useKeys, useMembers, usePatchKey, useBillingDomainOptions } from "@/queries/admin.ts";
 import { formatInt } from "@/utils/format.ts";
 import { formatMinute, hoursSince } from "@/utils/time.ts";
 
@@ -23,6 +23,8 @@ const highlightKeyId = ref<number | null>(null);
 
 const filterMember = ref<number | "unassigned" | null>(null);
 const filterStatus = ref<"active" | "disabled" | null>(null);
+const filterDomain = ref<string | "none" | null>(null);
+let domainSaveTimer: ReturnType<typeof setTimeout> | null = null;
 const filterRecentFailed = ref(false);
 
 /** URL → 筛选（总览跳入） */
@@ -35,6 +37,10 @@ function syncFromRoute() {
 
   if (q.status === "active" || q.status === "disabled") filterStatus.value = q.status;
   else filterStatus.value = null;
+  if (q.billing_domain === "none") filterDomain.value = "none";
+  else if (typeof q.billing_domain === "string" && q.billing_domain) {
+    filterDomain.value = q.billing_domain;
+  } else filterDomain.value = null;
 
   filterRecentFailed.value = q.recent_failed === "1" || q.recent_failed === "true";
 
@@ -52,18 +58,21 @@ function pushQuery() {
   if (filterMember.value === "unassigned") query.member_id = "unassigned";
   else if (filterMember.value != null) query.member_id = String(filterMember.value);
   if (filterStatus.value) query.status = filterStatus.value;
+  if (filterDomain.value === "none") query.billing_domain = "none";
+  else if (filterDomain.value) query.billing_domain = filterDomain.value;
   if (filterRecentFailed.value) query.recent_failed = "1";
   if (highlightKeyId.value != null) query.key_id = String(highlightKeyId.value);
   void router.replace({ path: "/admin/keys", query });
 }
 
-watch([filterMember, filterStatus, filterRecentFailed], () => {
+watch([filterMember, filterStatus, filterDomain, filterRecentFailed], () => {
   pushQuery();
 });
 
 const filters = computed(() => ({
   member_id: filterMember.value ?? undefined,
   status: filterStatus.value ?? undefined,
+  billing_domain: filterDomain.value ?? undefined,
   recent_failed: filterRecentFailed.value ? true : undefined,
 }));
 
@@ -91,6 +100,7 @@ const hasActiveFilter = computed(
   () =>
     filterMember.value != null ||
     filterStatus.value != null ||
+    filterDomain.value != null ||
     filterRecentFailed.value,
 );
 
@@ -99,6 +109,8 @@ const memberOptions = computed(() => [
   ...(membersQuery.data.value ?? []).map((m) => ({ value: m.id, label: m.name })),
 ]);
 
+const domainOptions = useBillingDomainOptions();
+
 function isStalled(logSyncedAt: number | null | undefined): boolean {
   const h = hoursSince(logSyncedAt);
   return h != null && h > 2;
@@ -122,6 +134,7 @@ function tipTitle(label: string, tip: string) {
 const columns = [
   { title: "名称", key: "token_name", width: 160 },
   { title: "归属", key: "member_name", width: 140 },
+  { title: "账本域", key: "billing_domain", width: 110 },
   { title: "状态", key: "status", width: 100 },
   {
     title: tipTitle(
@@ -156,6 +169,36 @@ async function onMemberChange(
   }
 }
 
+async function onDomainChange(record: KeyItem, value: string) {
+  const next = value.trim() || null;
+  if ((record.billing_domain ?? null) === next) return;
+  if (domainSaveTimer != null) clearTimeout(domainSaveTimer);
+  const id = record.id;
+  domainSaveTimer = setTimeout(() => {
+    domainSaveTimer = null;
+    void saveDomain(id, next);
+  }, 400);
+}
+
+async function onDomainBlur(record: KeyItem, value: string) {
+  const next = value.trim() || null;
+  if (domainSaveTimer != null) {
+    clearTimeout(domainSaveTimer);
+    domainSaveTimer = null;
+  }
+  if ((record.billing_domain ?? null) === next) return;
+  await saveDomain(record.id, next);
+}
+
+async function saveDomain(id: number, billing_domain: string | null) {
+  try {
+    await patchKey.mutateAsync({ id, body: { billing_domain } });
+    message.success("账本域已更新");
+  } catch (e) {
+    message.error((e as ApiError).message || "账本域更新失败");
+  }
+}
+
 async function onToggleStatus(record: KeyItem) {
   const next = record.status === "active" ? "disabled" : "active";
   try {
@@ -227,6 +270,17 @@ function onRowClass(record: KeyItem) {
           placeholder="状态"
           allow-clear
         />
+        <a-select
+          v-model:value="filterDomain"
+          :options="[
+            { value: null, label: '全部账本域' },
+            { value: 'none', label: '未标注' },
+            ...domainOptions,
+          ]"
+          style="width: 140px"
+          placeholder="账本域"
+          allow-clear
+        />
         <a-checkbox v-model:checked="filterRecentFailed">最近轮次失败</a-checkbox>
       </a-space>
     </div>
@@ -273,6 +327,17 @@ function onRowClass(record: KeyItem) {
             @change="(v: number | 'unassigned') => onMemberChange(record, v)"
           />
         </template>
+        <template v-else-if="column.key === 'billing_domain'">
+          <a-auto-complete
+            :value="record.billing_domain ?? ''"
+            :options="domainOptions"
+            size="small"
+            style="width: 120px"
+            allow-clear
+            @change="(v: string) => onDomainChange(record, v)"
+            @blur="(e: FocusEvent) => onDomainBlur(record, (e.target as HTMLInputElement)?.value ?? '')"
+          />
+        </template>
         <template v-else-if="column.key === 'status'">
           <a-badge
             :status="record.status === 'active' ? 'success' : 'default'"
diff --git a/apps/web/src/views/admin/payments-view.vue b/apps/web/src/views/admin/payments-view.vue
index 4ee154d..24ea51e 100644
--- a/apps/web/src/views/admin/payments-view.vue
+++ b/apps/web/src/views/admin/payments-view.vue
@@ -25,6 +25,36 @@ const route = useRoute();
 const router = useRouter();
 const subsQuery = useSubscriptions();
 const topupsQuery = useTopups();
+
+const filterDomain = ref<string | "none" | null>(null);
+const domainOptions = computed(() => {
+  const set = new Set<string>();
+  for (const s of subsQuery.data.value ?? []) {
+    if (s.billing_domain) set.add(s.billing_domain);
+  }
+  for (const t of topupsQuery.data.value ?? []) {
+    if (t.billing_domain) set.add(t.billing_domain);
+  }
+  return [...set].sort().map((v) => ({ value: v, label: v }));
+});
+
+const filteredSubs = computed(() => {
+  const list = subsQuery.data.value ?? [];
+  if (!filterDomain.value) return list;
+  if (filterDomain.value === "none") {
+    return list.filter((r) => r.billing_domain == null);
+  }
+  return list.filter((r) => r.billing_domain === filterDomain.value);
+});
+
+const filteredTops = computed(() => {
+  const list = topupsQuery.data.value ?? [];
+  if (!filterDomain.value) return list;
+  if (filterDomain.value === "none") {
+    return list.filter((r) => r.billing_domain == null);
+  }
+  return list.filter((r) => r.billing_domain === filterDomain.value);
+});
 const deleteSub = useDeleteSubscription();
 const deleteTop = useDeleteTopup();
 
@@ -50,9 +80,9 @@ syncFromRoute();
 watch(() => route.query, () => syncFromRoute());
 watch(tab, () => pushTab());
 
-const subRows = computed(() => [...(subsQuery.data.value ?? [])]);
+const subRows = computed(() => [...filteredSubs.value]);
 const topRows = computed(() => {
-  const list = [...(topupsQuery.data.value ?? [])];
+  const list = [...filteredTops.value];
   list.sort((a, b) => (b.paid_at ?? 0) - (a.paid_at ?? 0));
   return list;
 });
@@ -62,6 +92,7 @@ const subColumns = [
   { title: "期间", key: "period", width: 200 },
   { title: "额度", key: "quota", width: 160 },
   { title: "付款金额 / 时间", key: "paid", width: 170 },
+  { title: "账本域", key: "billing_domain", width: 110 },
   { title: "备注", key: "remark" },
   { title: "登记", key: "created_at", width: 150 },
   { title: "操作", key: "actions", width: 120 },
@@ -78,6 +109,7 @@ const topColumns = [
   { title: "实付金额", dataIndex: "money", key: "money", width: 100 },
   { title: "交易号 / 渠道", key: "trade", width: 180 },
   { title: "派生额度", key: "quota", width: 150 },
+  { title: "账本域", key: "billing_domain", width: 110 },
   { title: "备注", key: "remark" },
   { title: "操作", key: "actions", width: 120 },
 ];
@@ -198,6 +230,20 @@ watch(
       <a-tab-pane key="topups" tab="充值" />
     </a-tabs>
 
+    <div class="payments-toolbar">
+      <a-select
+        v-model:value="filterDomain"
+        :options="[
+          { value: null, label: '全部账本域' },
+          { value: 'none', label: '未标注' },
+          ...domainOptions,
+        ]"
+        style="width: 160px"
+        placeholder="账本域"
+        allow-clear
+      />
+    </div>
+
     <a-alert
       v-if="tab === 'subs' && missingSubs.length"
       type="warning"
@@ -253,6 +299,9 @@ watch(
                 : "—"
             }}
           </template>
+          <template v-else-if="column.key === 'billing_domain'">
+            {{ record.billing_domain || "—" }}
+          </template>
           <template v-else-if="column.key === 'remark'">
             {{ record.remark || "—" }}
           </template>
@@ -316,6 +365,9 @@ watch(
           <template v-else-if="column.key === 'quota'">
             <QuotaText :quota="record.quota_derived" :quota-usd="record.quota_usd" />
           </template>
+          <template v-else-if="column.key === 'billing_domain'">
+            {{ record.billing_domain || "—" }}
+          </template>
           <template v-else-if="column.key === 'remark'">
             {{ record.remark || "—" }}
           </template>
@@ -346,6 +398,10 @@ watch(
 </template>
 
 <style scoped>
+.payments-toolbar {
+  margin-bottom: 12px;
+}
+
 .pay-period {
   display: flex;
   flex-direction: column;
diff --git a/apps/web/src/views/member/logs-view.vue b/apps/web/src/views/member/logs-view.vue
index 88da0ff..364dd30 100644
--- a/apps/web/src/views/member/logs-view.vue
+++ b/apps/web/src/views/member/logs-view.vue
@@ -439,7 +439,7 @@ watch(
           <span>{{ payModalPayment.remark }}</span>
         </div>
         <div class="member-logs__foot">
-          支付参数对成员完全公开；币种由成员与作者约定
+          支付参数在你所属账本域内公开；币种由成员与作者约定
         </div>
       </div>
       <div v-else class="member-logs__note">该订阅无登记信息</div>
diff --git a/apps/web/src/views/member/payments-view.vue b/apps/web/src/views/member/payments-view.vue
index ccbc346..561d767 100644
--- a/apps/web/src/views/member/payments-view.vue
+++ b/apps/web/src/views/member/payments-view.vue
@@ -49,6 +49,7 @@ const subColumns = [
   { title: "期间", key: "period", width: 200 },
   { title: "额度", key: "quota", width: 160 },
   { title: "付款金额 / 时间", key: "paid", width: 170 },
+  { title: "账本域", dataIndex: "billing_domain", key: "billing_domain", width: 110 },
   { title: "备注", dataIndex: "remark", key: "remark", width: 140, ellipsis: true },
 ];
 
@@ -68,6 +69,7 @@ const topColumns = [
   },
   { title: "交易号 / 渠道", key: "trade", width: 180 },
   { title: "派生额度", key: "quota", width: 150 },
+  { title: "账本域", dataIndex: "billing_domain", key: "billing_domain", width: 110 },
   { title: "备注", dataIndex: "remark", key: "remark", width: 140, ellipsis: true },
 ];
 </script>
@@ -76,7 +78,7 @@ const topColumns = [
   <section>
     <PageHeader
       title="支付参数"
-      subtitle="订阅与充值的登记参数 · 对成员完全公开"
+      subtitle="订阅与充值的登记参数 · 同账本域内可见"
     >
       <template #actions>
         <span class="mv-range-label">时间范围</span>
@@ -186,7 +188,7 @@ const topColumns = [
       </a-table>
 
       <div class="mv-foot">
-        支付参数对成员完全公开；币种由成员与作者约定
+        支付参数在你所属账本域内公开；币种由成员与作者约定
       </div>
     </template>
   </section>
diff --git a/docs/design/API契约-成员视图.md b/docs/design/API契约-成员视图.md
index 8edd4a7..6777dd0 100644
--- a/docs/design/API契约-成员视图.md
+++ b/docs/design/API契约-成员视图.md
@@ -48,13 +48,13 @@
   "subscriptions": [
     { "id": 3, "subscription_id": 44, "period_start": "2026-09-01T00:00:00Z",
       "period_end": "2026-10-01T00:00:00Z", "quota_granted": 12500000, "quota_usd": "25.00",
-      "paid_amount": 170, "paid_at": "2026-08-28T10:00:00Z", "remark": "九月拼车",
+      "paid_amount": 170, "paid_at": "2026-08-28T10:00:00Z", "billing_domain": "carpool", "remark": "九月拼车",
       "created_at": "2026-09-02T12:00:00Z" }
   ],
   "topups": [
     { "id": 1, "upstream_id": 17, "amount": 1, "money": 2.04,
       "trade_no": "USR6…", "payment_method": "alipay", "payment_provider": "epay",
-      "status": "success", "paid_at": "…",
+      "status": "success", "paid_at": "…", "billing_domain": "carpool",
       "quota_derived": 500000, "quota_usd": "1.00",
       "remark": "", "created_at": "…" }
   ]
@@ -62,7 +62,7 @@
 ```
 
 - `usage`：该时段总用量（总览摘要条）；`by_source`：订阅 / 充值分解（分段条）；`keys`：我的 Key 表（`log_synced_at` 支撑停滞标注）
-- `subscriptions` / `topups`：**支付参数页 + 订阅徽章弹窗 + 「本订阅期间」快捷项**的数据源，判定见 §5 裁定 2；对成员**全字段可见**（含 `remark`）；两集皆空 = 纯用量模式中性空态
+- `subscriptions` / `topups`：**支付参数页 + 订阅徽章弹窗 + 「本订阅期间」快捷项**的数据源，判定见 §5 裁定 2；对成员**同账本域内全字段可见**（含 `remark`）；两集皆空 = 纯用量模式中性空态
 - 订阅徽章弹窗仅限「订阅 #N」（查 `subscriptions`）：「充值」不弹窗（余额池无逐笔）、「未关联」不可点；降级「该订阅无登记信息」
 
 ## 4. 日志明细
@@ -92,7 +92,7 @@
 ## 5. 本稿裁定项（请作者重点审）
 
 1. **成员视图明细默认全类型**（消费 + 错误）——对齐「事实可查」；聚合仍仅 `type = 2`（用量口径不变）；`type` 可筛 2 / `error`；
-2. **「该时段涉及」登记的判定**：订阅 = 该时段日志（`type = 2`）出现过的 `subscription_id` 对应 `subscriptions` 行 **∪ 进行中的订阅**（`period_end` 为空或未来——支撑「本订阅期间」快捷项）；充值 = `paid_at ∈ [from, to)`（入账事件按付费时刻锚定）；补录审计看各表 `created_at`（不进本判定）；
+2. **「该时段涉及」登记的判定**（账本域隔离）：成员的**我的域** = 名下 key 的 `billing_domain` 非空并集。订阅 = 该时段日志（`type = 2`）出现过的 `subscription_id` 对应 `subscriptions` 行（**事实直连**，含未标域） **∪**（进行中 **∧** `billing_domain ∈ 我的域`）——未标域进行中订阅不放行；充值 = **`billing_domain ∈ 我的域`** ∧ `paid_at ∈ [from, to)`——未标域充值不放行。管理面不受此限；
 3. **明细行 DTO 与管理面同构**：同一 `LogItem` 类型，成员端经归属与 `type` 恒定过滤；
 4. **「充值」徽章不弹窗**——余额池扣款与具体充值记录无逐笔关联，弹窗回答不了「这笔花在哪」（《交互设计-成员视图》§4.2：订阅徽章才开支付参数弹窗，「充值」为纯标识；行展开只放模型调用详情）。
 
diff --git a/docs/design/API契约-管理面.md b/docs/design/API契约-管理面.md
index 1311e83..33f5e4d 100644
--- a/docs/design/API契约-管理面.md
+++ b/docs/design/API契约-管理面.md
@@ -119,12 +119,13 @@
 
 ### GET `/api/admin/keys` → 200 `[key]`
 
-全量直返（基数 10–25，不分页——§10 裁定 3）。筛选参数：`member_id`（id 或 `unassigned`）、`status`、`recent_failed=true`（引擎最近轮次失败）。排序默认数据截止降序（前端事）。
+全量直返（基数 10–25，不分页——§10 裁定 3）。筛选参数：`member_id`（id 或 `unassigned`）、`status`、`billing_domain`（值或 `none` = 未标注）、`recent_failed=true`（引擎最近轮次失败）。排序默认数据截止降序（前端事）。
 
 ```json
 {
   "id": 5, "token_name": "小张-01", "status": "active",
   "member_id": 1, "member_name": "小张",
+  "billing_domain": "carpool",
   "registered_at": "2026-09-20T10:00:00Z",
   "log_synced_at": "2026-10-02T08:00:00Z", "usage_synced_at": "2026-10-02T08:00:00Z",
   "total_used": 600000, "total_available": 940000, "total_granted": 1540000,
@@ -136,7 +137,7 @@
 
 ### POST `/api/admin/keys` → 201 `key`
 
-`{ "sk_key": "sk-…", "member_id": null }`——登记四态：
+`{ "sk_key": "sk-…", "member_id": null, "billing_domain": null }`——登记四态：
 
 | 结果 | 响应 |
 |------|------|
@@ -147,7 +148,7 @@
 
 ### PATCH `/api/admin/keys/:id` → 200 `key`
 
-`{ "status": "disabled" }`（启用 / 停用）或 `{ "member_id": 3 }`（归属变更；`null` = 归还未归属）——部分更新，单字段或并存均可，审计按实际变更字段各落一行（§9 枚举）。非法值 `422`；key 不存在 `404`；`member_id` 引用不存在成员 `422`（`fields`）。
+`{ "status": "disabled" }`（启用 / 停用）· `{ "member_id": 3 }`（归属变更；`null` = 归还未归属）或 `{ "billing_domain": "office" }`（账本域变更；`null` = 未标域）——部分更新，单字段或并存均可，审计按实际变更字段各落一行（§9 枚举）。非法值 `422`；key 不存在 `404`；`member_id` 引用不存在成员 `422`（`fields`）。
 
 ## 6. 日志明细（管理面下钻）
 
@@ -184,6 +185,7 @@
   "period_start": "2026-09-01T00:00:00Z", "period_end": "2026-10-01T00:00:00Z",
   "quota_granted": 12500000, "quota_usd": "25.00",
   "paid_amount": 170, "paid_at": "2026-08-28T10:00:00Z",
+  "billing_domain": "carpool",
   "remark": "九月拼车", "created_at": "2026-09-02T12:00:00Z"
 }
 ```
@@ -193,7 +195,7 @@
 
 ### POST `/api/admin/subscriptions` → 201 `subscription`
 
-必填：`subscription_id` · `period_start` · `quota_granted`；可空：`period_end`（=进行中）· `paid_amount` · `paid_at` · `remark`。美元双输入为前端换算，落库恒原始 quota。
+必填：`subscription_id` · `period_start` · `quota_granted`；可空：`period_end`（=进行中）· `paid_amount` · `paid_at` · `billing_domain` · `remark`。美元双输入为前端换算，落库恒原始 quota。列表筛选支持 `billing_domain`（值或 `none`）。
 
 ### PUT `/api/admin/subscriptions/:id` / DELETE → 204
 
@@ -209,6 +211,7 @@
   "payment_method": "alipay", "payment_provider": "epay",
   "status": "success",
   "paid_at": "2026-10-09T12:22:56Z",
+  "billing_domain": "carpool",
   "quota_derived": 500000, "quota_usd": "1.00",
   "remark": "", "created_at": "2026-10-09T13:00:00Z"
 }
@@ -218,7 +221,7 @@
 
 ### POST `/api/admin/topups` → 201 `topup`
 
-必填：`paid_at` · `amount` · `money`；可空：`upstream_id` · `trade_no` · `payment_method` · `payment_provider` · `status` · `remark`。
+必填：`paid_at` · `amount` · `money`；可空：`upstream_id` · `trade_no` · `payment_method` · `payment_provider` · `status` · `billing_domain` · `remark`。列表筛选支持 `billing_domain`（值或 `none`）。
 
 ### PUT `/api/admin/topups/:id` / DELETE → 204
 
diff --git a/docs/design/api_keys表字段设计.md b/docs/design/api_keys表字段设计.md
index 3b92e9f..c389bc3 100644
--- a/docs/design/api_keys表字段设计.md
+++ b/docs/design/api_keys表字段设计.md
@@ -32,6 +32,7 @@
 | `key_ciphertext` | bytea | 登记时 AES-256-GCM（管理员粘贴输入），nonce + 密文 + tag 打包 | 调上游时解密原文（唯一用途） |
 | `status` | text | 管理面启停（引擎只读） | `active` / `disabled`；轮询清单 = active；disabled 数据保留、仅移出轮询 |
 | `member_id` | bigint FK NULL | 归属登记（管理通道） | → `members.id`；成员视图与按成员统计的锚点；空 = 未归属 |
+| `billing_domain` | text NULL | 人工标注（登记 / 行内编辑） | **账本域标签**（如 `carpool` / `office`）——区分用途的自由文本，非身份、非权限；空 = 未标域；成员可见性与支付记录的 `billing_domain` 对齐 |
 | `registered_at` | timestamptz | 登记时写入 | 空态文案「数据自该 key 登记起累积」 |
 | `log_synced_at` | timestamptz NULL | 日志同步成功时写入 | **「数据截止 HH:mm」的唯一来源**；同步失败的显形信号（停滞） |
 | `usage_synced_at` | timestamptz NULL | 额度采集成功时写入 | 额度信息的新鲜度（UI 若做）、排查 |
diff --git a/docs/design/subscriptions表字段设计.md b/docs/design/subscriptions表字段设计.md
index a6b271a..240c616 100644
--- a/docs/design/subscriptions表字段设计.md
+++ b/docs/design/subscriptions表字段设计.md
@@ -29,6 +29,7 @@
 | `quota_granted` | bigint | 人工录入（钱包页 `amount_total`） | 套餐总额度——**原始 quota 整数**（与日志 `quota` 同域；充值侧无此列，额度由 `amount × qpu` 派生） |
 | `paid_amount` | numeric? | 人工录入（支付凭证） | 该套餐实付金额；币种无关纯数值；未知可空 |
 | `paid_at` | timestamptz? | 人工录入（支付凭证） | **钱出手时刻**（非登记时刻）；未知可空 |
+| `billing_domain` | text NULL | 人工标注（登记 / 编辑） | **账本域标签**（如 `carpool` / `office`）；空 = 未标域，成员不可见（涉及该订阅 `subscription_id` 的日志事实直连除外） |
 | `remark` | text | 人工填写 | 备注 |
 | `created_at` | timestamptz | 系统 | **登记入库时刻**（补录审计） |
 
@@ -60,5 +61,5 @@
 
 ## 6. 对外边界
 
-- 参数对成员**完全公开透明**（含 `remark` / 金额）——访问主体模型裁决
+- 参数对成员**同账本域内可见**（含 `remark` / 金额）——同域透明、跨域隔离；未标域默认对成员隐藏，例外：该订阅 `subscription_id` 出现在本人名下 key 的 `type = 2` 日志中（事实直连）
 - 无「应付」、无分摊字段
diff --git a/docs/design/topups表字段设计.md b/docs/design/topups表字段设计.md
index 57f3397..f247289 100644
--- a/docs/design/topups表字段设计.md
+++ b/docs/design/topups表字段设计.md
@@ -30,6 +30,7 @@
 | `payment_provider` | text? | `payment_provider` | 如 `epay` |
 | `status` | text? | `status` | 如 `success`；失败单一般不入账本 |
 | `paid_at` | timestamptz | **`complete_time`** | **入账时刻（唯一事件时间）**——平台列表展示的就是它；上游 `create_time` 不入库 |
+| `billing_domain` | text NULL | 人工标注（登记 / 编辑） | **账本域标签**（如 `carpool` / `office`）；空 = 未标域，成员不可见（充值无逐笔日志连线，无法用日志证明「与我相关」） |
 | `remark` | text | — | 人工备注 |
 | `created_at` | timestamptz | — | 本系统登记时刻（补录审计） |
 
@@ -68,7 +69,7 @@
 
 ## 6. 对外边界
 
-- 成员可见：`amount`、`money`、渠道、`paid_at`、备注；无逐笔与模型日志的连线
+- 成员可见：`amount`、`money`、渠道、`paid_at`、备注、`billing_domain`；**仅本人名下 key 所属账本域内**；无逐笔与模型日志的连线；未标域默认不可见
 - 纯用量模式可不登记
 
 ## 7. 迁移说明
diff --git a/docs/design/交互设计-key管理.md b/docs/design/交互设计-key管理.md
index 076e2ea..1f6e68a 100644
--- a/docs/design/交互设计-key管理.md
+++ b/docs/design/交互设计-key管理.md
@@ -16,6 +16,7 @@
 |----|------|------|
 | 名称 | `token_name`（上游同步） | 展示名以它为准（上游改名随轮询更新） |
 | 归属 | 成员名徽章 / 「未归属」 | 行内下拉可直接改归属（见 §4） |
+| 账本域 | `billing_domain` / 「—」 | 行内可编辑（联想输入，防抖落盘）；列表可按域筛，含「未标注」 |
 | 状态 | `active` / `disabled` 徽章 | disabled 灰态 |
 | 数据截止 | `log_synced_at` | **停滞预警**：落后 > 2 小时 → 该单元格黄色标注「停滞」+ hover 提示「检查引擎日志；若持续 401 请停用」 |
 | 累计已用 / 剩余 | `total_used` / `total_available` + `unlimited_quota` 分支 | 「剩余：不限」分支 |
@@ -30,6 +31,7 @@
 
 1. **sk-key 粘贴框**（大号单行，paste 友好）——页脚安全注记：「粘贴后立即加密存储，界面不再回显明文」
 2. 归属成员下拉（默认「未归属」，可后改；下拉旁附「+ 新建成员」快捷入口——缝合「开户 → 发令牌 → 开 key」的跨页流程断点，见《交互设计-成员管理》）
+2b. 账本域输入（可空，已有值联想；与支付记录的 `billing_domain` 同语义）
 3. 提交 → 服务端上游验证，四态反馈：
 
 | 结果 | 反馈 |
@@ -45,10 +47,11 @@
 - **启用**：行操作 → 「已启用——下一轮同步（≤5 分钟）将自动验证，结果见数据截止」（无人工预验证环节，引擎即验证器）
 - **死亡处置推荐流**（对持续 401 的 key）：数据截止停滞 → 你查看引擎日志确认 → 停用 → 找运营方 → 修复后启用。界面在停滞标注的 hover 中给出这条指引文案（把「引擎记录不决策」的操作闭环写进提示里）
 
-## 4. 归属变更
+## 4. 归属 / 账本域变更
 
-- 清单行内下拉直接切换（含「未归属」选项）——即时生效，无确认弹窗（低风险、可逆）
-- 变更后统计自动按新归属呈现（行级联查当前归属——表设计 3.8 语义）
+- 归属：清单行内下拉直接切换（含「未归属」选项）——即时生效，无确认弹窗（低风险、可逆）
+- 账本域：行内联想输入，防抖保存（失焦落盘）；可清空为未标域
+- 变更后统计自动按新归属呈现（行级联查当前归属——表设计 3.8 语义）；账本域影响成员支付参数可见性
 
 ## 5. 空态
 
diff --git a/docs/design/交互设计-成员视图.md b/docs/design/交互设计-成员视图.md
index aca5591..2d5836c 100644
--- a/docs/design/交互设计-成员视图.md
+++ b/docs/design/交互设计-成员视图.md
@@ -1,12 +1,12 @@
 # 交互设计 · 成员视图
 
-> 成员世界——**布局与信息结构对齐管理端**（侧边栏壳 + 页内区块 + 表格优先），内容仍是「我的用量」：名下 key 的调用日志、用量聚合、完全公开透明的支付参数。**R12 的交互落点**（日志行携带所属订阅/充值信息：徽章弹窗 + 行展开调用详情）。页面无任何「应付」概念（分摊哲学裁决）。
+> 成员世界——**布局与信息结构对齐管理端**（侧边栏壳 + 页内区块 + 表格优先），内容仍是「我的用量」：名下 key 的调用日志、用量聚合、同账本域内可见的支付参数。**R12 的交互落点**（日志行携带所属订阅/充值信息：徽章弹窗 + 行展开调用详情）。页面无任何「应付」概念（分摊哲学裁决）。
 
 | 项目 | 内容 |
 |------|------|
 | 状态 | 定稿（2026-10-09，作者认可布局重写） |
 | 关联 | 《交互设计-总览与共性》（数值呈现、时间选择器、响应式）·《交互设计-调用日志》（明细表列语义同构参照）· R12（裁决记录）· `members表字段设计.md`（令牌）· `usage_logs表字段设计.md`（来源提列）· `subscriptions` / `topups` 表字段设计（参数数据源）·《API契约-成员视图》 |
-| 数据 | 名下 key 的 `usage_logs` 聚合与明细 · 相关 `subscriptions` / `topups`（完全可见） |
+| 数据 | 名下 key 的 `usage_logs` 聚合与明细 · 相关 `subscriptions` / `topups`（同账本域内可见） |
 | 前置 | 经登录壳（令牌）进入；**侧边栏布局**（与管理端同构，菜单与数据不同） |
 
 ---
@@ -32,11 +32,11 @@
 |------|------|-----------|-----------|
 | 总览 | 成员总览 | 该时段用量与名下 key 全景 | **是** |
 | 调用日志 | 调用明细 | 名下 key 的模型请求流水 | |
-| 支付参数 | 支付参数 | 订阅 / 充值登记参数（完全公开） | |
+| 支付参数 | 支付参数 | 订阅 / 充值登记参数（同账本域内可见） | |
 
 顺序逻辑：先看汇总 → 查事实（流水）→ 对参数（支付）——与管理端「总览 → 对象 → 事实」同型，体量收成三项。
 
-**时间范围全局共享**：三页共用同一对账窗口——切页保留当前范围（菜单带 `from/to`），任一页改范围即全局生效；URL 可深链。支付参数页的「该时段涉及」：订阅看期间重叠 ∪ 进行中，充值看 `paid_at`。
+**时间范围全局共享**：三页共用同一对账窗口——切页保留当前范围（菜单带 `from/to`），任一页改范围即全局生效；URL 可深链。支付参数页的「该时段涉及」：订阅 = 涉及我日志的 `subscription_id` ∪ 我域内进行中；充值 = 我域内且 `paid_at` 落在窗口内。
 
 **数据刷新心智**：**仅总览**作看板自动刷新（约 60s）；调用日志 / 支付参数为查询台，**不主动轮询**（改条件或手动重试才拉）；相对时间窗在选定后定格，避免每分钟打穿缓存。
 
@@ -113,11 +113,11 @@
 
 ## 5. 支付参数页
 
-完全公开透明的落点——**订阅权益 + 充值入账**两组清单（Tab 或上下两节），参数原貌成表。
+同账本域内可见的落点——**订阅权益 + 充值入账**两组清单（Tab 或上下两节），参数原貌成表。
 
 ### 5.1 页头
 
-`PageHeader`「支付参数」+ 副文案「订阅与充值的登记参数 · 对成员完全公开」；右侧时间范围（全局共享窗口）。
+`PageHeader`「支付参数」+ 副文案「订阅与充值的登记参数 · 同账本域内可见」；右侧时间范围（全局共享窗口）。
 
 ### 5.2 订阅表
 
@@ -139,7 +139,7 @@
 | 派生额度 | `amount × qpu` + $（展示） |
 | 备注 | `remark` |
 
-- 脚注：「支付参数对成员完全公开；币种由成员与作者约定」——透明裁决的界面声明
+- 脚注：「支付参数在你所属账本域内公开；币种由成员与作者约定」——透明裁决的界面声明（同域透明、跨域隔离）
 - **不出现**任何派生金额：无「折合人民币」、无「占比 × 金额」、无「应付」
 - 空态（纯用量模式）：中性文案「暂无支付记录信息」——**不设行动引导**
 
diff --git a/docs/design/交互设计-支付记录.md b/docs/design/交互设计-支付记录.md
index 6d85a9b..a2ded0f 100644
--- a/docs/design/交互设计-支付记录.md
+++ b/docs/design/交互设计-支付记录.md
@@ -50,13 +50,14 @@
 | 交易号 / 渠道 | `trade_no` · `payment_method` / `payment_provider` |
 | 派生额度 | `amount × qpu` + $（展示，不入库） |
 | 备注 / 登记 | `remark` · `created_at` |
+| 账本域 | `billing_domain`（可空；列表可按域筛，含「未标注」） |
 | 操作 | 编辑 / 删除 |
 
 ## 4. 登记表单（分 Tab，不再 `kind` 切换）
 
-**订阅**：订阅 ID · 期间起止（结束可空）· 额度（quota / 美元双输入）· 付款金额（可空）· 付款时间（可空）· 备注 · **「从平台选用」**（辅助登录 → 订阅列表）  
+**订阅**：订阅 ID · 期间起止（结束可空）· 额度（quota / 美元双输入）· 付款金额（可空）· 付款时间（可空）· 账本域（可空，已有值联想）· 备注 · **「从平台选用」**（辅助登录 → 订阅列表）  
 
-**充值**：时间 `paid_at`（必填）· `amount`（必填）· `money`（必填）· 交易号 / 渠道（可空）· 备注 · **「从平台选用」**（辅助登录 → 充值单分页列表）；**无「换得额度」输入框**（派生）  
+**充值**：时间 `paid_at`（必填）· `amount`（必填）· `money`（必填）· 交易号 / 渠道（可空）· 账本域（可空，已有值联想）· 备注 · **「从平台选用」**（辅助登录 → 充值单分页列表）；**无「换得额度」输入框**（派生）  
 
 ### 4.1 选用弹层（订阅 / 充值同规则）
 
diff --git a/docs/design/需求清单.md b/docs/design/需求清单.md
index e0a998f..44ca5e4 100644
--- a/docs/design/需求清单.md
+++ b/docs/design/需求清单.md
@@ -56,7 +56,7 @@
 | # | 需求 | 说明 | 状态 |
 |---|------|------|------|
 | R11 | 平台身份体系与鉴权 | 访问主体 = 作者 + 成员（运营方完全信任，不设身份）。**成员身份与管理面鉴权均已裁决**（2026-09-29，见裁决记录） | **已裁决**（2026-09-29） |
-| R12 | 成员自助视图 | 令牌进成员视图：**名下 key 的模型调用日志**——每条记录额外携带所属订阅/充值的信息（具体携带形态待核查后设计）+ 用量聚合（quota / 美元，按来源分解）；**完全公开透明**（订阅与支付参数对成员可见）；无「应付」概念（分摊是社交层问题）；登录壳交互（输令牌 → sessionStorage，关标签失效） | **已裁决**（2026-09-29） |
+| R12 | 成员自助视图 | 令牌进成员视图：**名下 key 的模型调用日志**——每条记录额外携带所属订阅/充值的信息（具体携带形态待核查后设计）+ 用量聚合（quota / 美元，按来源分解）；支付参数**同账本域内可见**（同域透明、跨域隔离；未标域默认藏，详见各表 `billing_domain` 与《API契约-成员视图》§5）；无「应付」概念（分摊是社交层问题）；登录壳交互（输令牌 → sessionStorage，关标签失效） | **已裁决**（2026-09-29；2026-10-13 补账本域可见性） |
 | R16 | 成员档案维护与空壳删除 | **修改**：开户后可改 `name` / `remark`（误建、挂 key 前改名等真实场景）；`status` 走启停、令牌走重发，不并入档案编辑。**删除**：仅当**当前无任何 key 归属**（`key_count = 0`）才允许硬删——清理空壳，不触碰账本事实；名下有 key 只能停用（软删除语义不变） | **已裁决**（2026-10-10） |
 
 ## 5. 交付域（已裁决）
@@ -137,7 +137,7 @@
 - **支付记录**（订阅与充值同构）：支付金额 ↔ 额度的**比率关系**——**币种无关**（系统不预设人民币或其他币种，币种是使用者之间的约定）；订阅与充值两类支付事件统一建模（表结构与命名随 R15）
 - **计费来源标注为一等维度**：`billing_source`（订阅 / 充值）随日志解析存储；按来源 / 成员 / key / 模型的任意时段多维聚合
 - **充值登记**（R7 重定义）：与订阅同构——不做充值用量的金额分摊（原「池子加权平均」方案裁撤）
-- **成员视角（R12 形态修正）**：名下 key 的模型调用日志，**每条记录额外携带所属订阅/充值的信息**（具体携带形态待核查后设计）、**完全公开透明**（订阅与支付参数对成员可见）、无「应付」概念
+- **成员视角（R12 形态修正）**：名下 key 的模型调用日志，**每条记录额外携带所属订阅/充值的信息**（具体携带形态待核查后设计）、支付参数**同账本域内可见**、无「应付」概念
 
 ### 2026-10-01 · R15 审阅定稿
 
diff --git a/packages/core/src/schemas.ts b/packages/core/src/schemas.ts
index 62dc90e..d145a7c 100644
--- a/packages/core/src/schemas.ts
+++ b/packages/core/src/schemas.ts
@@ -79,6 +79,7 @@ export const keyItem = z.object({
   status: z.enum(["active", "disabled"]),
   member_id: z.number().int().nullable(),
   member_name: z.string().nullable(),
+  billing_domain: z.string().nullable(),
   registered_at: z.number().int(),
   log_synced_at: z.number().int().nullable(),
   usage_synced_at: z.number().int().nullable(),
@@ -92,11 +93,13 @@ export const keyItem = z.object({
 export const registerKeyBody = z.object({
   sk_key: z.string().min(8),
   member_id: z.number().int().positive().nullable().optional(),
+  billing_domain: z.string().nullable().optional(),
 });
 
 export const patchKeyBody = z.object({
   status: z.enum(["active", "disabled"]).optional(),
   member_id: z.number().int().positive().nullable().optional(),
+  billing_domain: z.string().nullable().optional(),
 });
 
 export const memberItem = z.object({
@@ -141,6 +144,7 @@ export const subscriptionItem = z.object({
   quota_usd: z.string(),
   paid_amount: z.number().nullable(),
   paid_at: z.number().int().nullable(),
+  billing_domain: z.string().nullable(),
   remark: z.string(),
   created_at: z.number().int(),
 });
@@ -157,6 +161,7 @@ export const topupItem = z.object({
   paid_at: z.number().int(),
   quota_derived: z.number().int(),
   quota_usd: z.string(),
+  billing_domain: z.string().nullable(),
   remark: z.string(),
   created_at: z.number().int(),
 });
@@ -218,6 +223,7 @@ export const createSubscriptionBody = z
     quota_granted: z.number().int().positive(),
     paid_amount: z.number().nullable().optional(),
     paid_at: z.string().min(1).nullable().optional(),
+    billing_domain: z.string().nullable().optional(),
     remark: z.string().default(""),
   });
 
@@ -230,6 +236,7 @@ export const createTopupBody = z.object({
   payment_provider: z.string().nullable().optional(),
   status: z.string().nullable().optional(),
   paid_at: z.string().min(1),
+  billing_domain: z.string().nullable().optional(),
   remark: z.string().default(""),
 });
 
diff --git a/packages/core/src/types.ts b/packages/core/src/types.ts
index 902e59e..feb03ab 100644
--- a/packages/core/src/types.ts
+++ b/packages/core/src/types.ts
@@ -46,6 +46,7 @@ export interface KeyItem {
   status: KeyStatus;
   member_id: number | null;
   member_name: string | null;
+  billing_domain: string | null;
   registered_at: UnixSec;
   log_synced_at: UnixSec | null;
   usage_synced_at: UnixSec | null;
@@ -66,6 +67,7 @@ export interface SubscriptionItem {
   quota_usd: QuotaUsd;
   paid_amount: PaidAmount | null;
   paid_at: UnixSec | null;
+  billing_domain: string | null;
   remark: string;
   created_at: UnixSec;
 }
@@ -83,6 +85,7 @@ export interface TopupItem {
   paid_at: UnixSec;
   quota_derived: Quota;
   quota_usd: QuotaUsd;
+  billing_domain: string | null;
   remark: string;
   created_at: UnixSec;
 }
diff --git a/packages/db/drizzle/0001_aromatic_hawkeye.sql b/packages/db/drizzle/0001_aromatic_hawkeye.sql
new file mode 100644
index 0000000..0b4be69
--- /dev/null
+++ b/packages/db/drizzle/0001_aromatic_hawkeye.sql
@@ -0,0 +1,3 @@
+ALTER TABLE "api_keys" ADD COLUMN "billing_domain" text;--> statement-breakpoint
+ALTER TABLE "subscriptions" ADD COLUMN "billing_domain" text;--> statement-breakpoint
+ALTER TABLE "topups" ADD COLUMN "billing_domain" text;
\ No newline at end of file
diff --git a/packages/db/drizzle/meta/0001_snapshot.json b/packages/db/drizzle/meta/0001_snapshot.json
new file mode 100644
index 0000000..8a72989
--- /dev/null
+++ b/packages/db/drizzle/meta/0001_snapshot.json
@@ -0,0 +1,1072 @@
+{
+  "id": "1ec2a288-b7ce-42e2-8df9-81a77e60b398",
+  "prevId": "ab6e6c62-7131-480b-9b11-5a386e3c8863",
+  "version": "7",
+  "dialect": "postgresql",
+  "tables": {
+    "public.api_keys": {
+      "name": "api_keys",
+      "schema": "",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "bigint",
+          "primaryKey": true,
+          "notNull": true,
+          "identity": {
+            "type": "always",
+            "name": "api_keys_id_seq",
+            "schema": "public",
+            "increment": "1",
+            "startWith": "1",
+            "minValue": "1",
+            "maxValue": "9223372036854775807",
+            "cache": "1",
+            "cycle": false
+          }
+        },
+        "key_hash": {
+          "name": "key_hash",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "key_ciphertext": {
+          "name": "key_ciphertext",
+          "type": "bytea",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "status": {
+          "name": "status",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "'active'"
+        },
+        "member_id": {
+          "name": "member_id",
+          "type": "bigint",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "billing_domain": {
+          "name": "billing_domain",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "registered_at": {
+          "name": "registered_at",
+          "type": "timestamp with time zone",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "now()"
+        },
+        "log_synced_at": {
+          "name": "log_synced_at",
+          "type": "timestamp with time zone",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "usage_synced_at": {
+          "name": "usage_synced_at",
+          "type": "timestamp with time zone",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "token_name": {
+          "name": "token_name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "''"
+        },
+        "total_granted": {
+          "name": "total_granted",
+          "type": "bigint",
+          "primaryKey": false,
+          "notNull": true,
+          "default": 0
+        },
+        "total_used": {
+          "name": "total_used",
+          "type": "bigint",
+          "primaryKey": false,
+          "notNull": true,
+          "default": 0
+        },
+        "total_available": {
+          "name": "total_available",
+          "type": "bigint",
+          "primaryKey": false,
+          "notNull": true,
+          "default": 0
+        },
+        "unlimited_quota": {
+          "name": "unlimited_quota",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": true,
+          "default": false
+        },
+        "model_limits": {
+          "name": "model_limits",
+          "type": "jsonb",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "model_limits_enabled": {
+          "name": "model_limits_enabled",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": true,
+          "default": false
+        },
+        "expires_at": {
+          "name": "expires_at",
+          "type": "timestamp with time zone",
+          "primaryKey": false,
+          "notNull": false
+        }
+      },
+      "indexes": {
+        "api_keys_member_id_idx": {
+          "name": "api_keys_member_id_idx",
+          "columns": [
+            {
+              "expression": "member_id",
+              "isExpression": false,
+              "asc": true,
+              "nulls": "last"
+            }
+          ],
+          "isUnique": false,
+          "concurrently": false,
+          "method": "btree",
+          "with": {}
+        }
+      },
+      "foreignKeys": {
+        "api_keys_member_id_members_id_fk": {
+          "name": "api_keys_member_id_members_id_fk",
+          "tableFrom": "api_keys",
+          "tableTo": "members",
+          "columnsFrom": [
+            "member_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {
+        "api_keys_key_hash_unique": {
+          "name": "api_keys_key_hash_unique",
+          "nullsNotDistinct": false,
+          "columns": [
+            "key_hash"
+          ]
+        }
+      },
+      "policies": {},
+      "checkConstraints": {},
+      "isRLSEnabled": false
+    },
+    "public.audit_logs": {
+      "name": "audit_logs",
+      "schema": "",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "bigint",
+          "primaryKey": true,
+          "notNull": true,
+          "identity": {
+            "type": "always",
+            "name": "audit_logs_id_seq",
+            "schema": "public",
+            "increment": "1",
+            "startWith": "1",
+            "minValue": "1",
+            "maxValue": "9223372036854775807",
+            "cache": "1",
+            "cycle": false
+          }
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp with time zone",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "now()"
+        },
+        "operator": {
+          "name": "operator",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "domain": {
+          "name": "domain",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "action": {
+          "name": "action",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "summary": {
+          "name": "summary",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "''"
+        }
+      },
+      "indexes": {
+        "audit_logs_created_at_idx": {
+          "name": "audit_logs_created_at_idx",
+          "columns": [
+            {
+              "expression": "created_at",
+              "isExpression": false,
+              "asc": true,
+              "nulls": "last"
+            }
+          ],
+          "isUnique": false,
+          "concurrently": false,
+          "method": "btree",
+          "with": {}
+        }
+      },
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "policies": {},
+      "checkConstraints": {},
+      "isRLSEnabled": false
+    },
+    "public.engine_status": {
+      "name": "engine_status",
+      "schema": "",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "integer",
+          "primaryKey": true,
+          "notNull": true,
+          "default": 1
+        },
+        "running": {
+          "name": "running",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": true,
+          "default": false
+        },
+        "sync_interval_ms": {
+          "name": "sync_interval_ms",
+          "type": "bigint",
+          "primaryKey": false,
+          "notNull": true,
+          "default": 300000
+        },
+        "last_round": {
+          "name": "last_round",
+          "type": "jsonb",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamp with time zone",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "now()"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "policies": {},
+      "checkConstraints": {},
+      "isRLSEnabled": false
+    },
+    "public.members": {
+      "name": "members",
+      "schema": "",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "bigint",
+          "primaryKey": true,
+          "notNull": true,
+          "identity": {
+            "type": "always",
+            "name": "members_id_seq",
+            "schema": "public",
+            "increment": "1",
+            "startWith": "1",
+            "minValue": "1",
+            "maxValue": "9223372036854775807",
+            "cache": "1",
+            "cycle": false
+          }
+        },
+        "name": {
+          "name": "name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "remark": {
+          "name": "remark",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "''"
+        },
+        "status": {
+          "name": "status",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "'active'"
+        },
+        "token_hash": {
+          "name": "token_hash",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "token_issued_at": {
+          "name": "token_issued_at",
+          "type": "timestamp with time zone",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp with time zone",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "now()"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {
+        "members_name_unique": {
+          "name": "members_name_unique",
+          "nullsNotDistinct": false,
+          "columns": [
+            "name"
+          ]
+        },
+        "members_token_hash_unique": {
+          "name": "members_token_hash_unique",
+          "nullsNotDistinct": false,
+          "columns": [
+            "token_hash"
+          ]
+        }
+      },
+      "policies": {},
+      "checkConstraints": {},
+      "isRLSEnabled": false
+    },
+    "public.qpu_history": {
+      "name": "qpu_history",
+      "schema": "",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "bigint",
+          "primaryKey": true,
+          "notNull": true,
+          "identity": {
+            "type": "always",
+            "name": "qpu_history_id_seq",
+            "schema": "public",
+            "increment": "1",
+            "startWith": "1",
+            "minValue": "1",
+            "maxValue": "9223372036854775807",
+            "cache": "1",
+            "cycle": false
+          }
+        },
+        "qpu": {
+          "name": "qpu",
+          "type": "numeric(18, 6)",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "effective_from": {
+          "name": "effective_from",
+          "type": "timestamp with time zone",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "now()"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "policies": {},
+      "checkConstraints": {},
+      "isRLSEnabled": false
+    },
+    "public.sessions": {
+      "name": "sessions",
+      "schema": "",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "bigint",
+          "primaryKey": true,
+          "notNull": true,
+          "identity": {
+            "type": "always",
+            "name": "sessions_id_seq",
+            "schema": "public",
+            "increment": "1",
+            "startWith": "1",
+            "minValue": "1",
+            "maxValue": "9223372036854775807",
+            "cache": "1",
+            "cycle": false
+          }
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "bigint",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "token_hash": {
+          "name": "token_hash",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "expires_at": {
+          "name": "expires_at",
+          "type": "timestamp with time zone",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp with time zone",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "now()"
+        }
+      },
+      "indexes": {
+        "sessions_user_id_idx": {
+          "name": "sessions_user_id_idx",
+          "columns": [
+            {
+              "expression": "user_id",
+              "isExpression": false,
+              "asc": true,
+              "nulls": "last"
+            }
+          ],
+          "isUnique": false,
+          "concurrently": false,
+          "method": "btree",
+          "with": {}
+        }
+      },
+      "foreignKeys": {
+        "sessions_user_id_users_id_fk": {
+          "name": "sessions_user_id_users_id_fk",
+          "tableFrom": "sessions",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {
+        "sessions_token_hash_unique": {
+          "name": "sessions_token_hash_unique",
+          "nullsNotDistinct": false,
+          "columns": [
+            "token_hash"
+          ]
+        }
+      },
+      "policies": {},
+      "checkConstraints": {},
+      "isRLSEnabled": false
+    },
+    "public.subscriptions": {
+      "name": "subscriptions",
+      "schema": "",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "bigint",
+          "primaryKey": true,
+          "notNull": true,
+          "identity": {
+            "type": "always",
+            "name": "subscriptions_id_seq",
+            "schema": "public",
+            "increment": "1",
+            "startWith": "1",
+            "minValue": "1",
+            "maxValue": "9223372036854775807",
+            "cache": "1",
+            "cycle": false
+          }
+        },
+        "subscription_id": {
+          "name": "subscription_id",
+          "type": "bigint",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "period_start": {
+          "name": "period_start",
+          "type": "timestamp with time zone",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "period_end": {
+          "name": "period_end",
+          "type": "timestamp with time zone",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "quota_granted": {
+          "name": "quota_granted",
+          "type": "bigint",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "paid_amount": {
+          "name": "paid_amount",
+          "type": "numeric(18, 2)",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "paid_at": {
+          "name": "paid_at",
+          "type": "timestamp with time zone",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "billing_domain": {
+          "name": "billing_domain",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "remark": {
+          "name": "remark",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "''"
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp with time zone",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "now()"
+        }
+      },
+      "indexes": {
+        "subscriptions_period_idx": {
+          "name": "subscriptions_period_idx",
+          "columns": [
+            {
+              "expression": "period_start",
+              "isExpression": false,
+              "asc": true,
+              "nulls": "last"
+            },
+            {
+              "expression": "period_end",
+              "isExpression": false,
+              "asc": true,
+              "nulls": "last"
+            }
+          ],
+          "isUnique": false,
+          "concurrently": false,
+          "method": "btree",
+          "with": {}
+        }
+      },
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {
+        "subscriptions_subscription_id_unique": {
+          "name": "subscriptions_subscription_id_unique",
+          "nullsNotDistinct": false,
+          "columns": [
+            "subscription_id"
+          ]
+        }
+      },
+      "policies": {},
+      "checkConstraints": {},
+      "isRLSEnabled": false
+    },
+    "public.topups": {
+      "name": "topups",
+      "schema": "",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "bigint",
+          "primaryKey": true,
+          "notNull": true,
+          "identity": {
+            "type": "always",
+            "name": "topups_id_seq",
+            "schema": "public",
+            "increment": "1",
+            "startWith": "1",
+            "minValue": "1",
+            "maxValue": "9223372036854775807",
+            "cache": "1",
+            "cycle": false
+          }
+        },
+        "upstream_id": {
+          "name": "upstream_id",
+          "type": "bigint",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "amount": {
+          "name": "amount",
+          "type": "numeric(18, 6)",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "money": {
+          "name": "money",
+          "type": "numeric(18, 2)",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "trade_no": {
+          "name": "trade_no",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "payment_method": {
+          "name": "payment_method",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "payment_provider": {
+          "name": "payment_provider",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "status": {
+          "name": "status",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "paid_at": {
+          "name": "paid_at",
+          "type": "timestamp with time zone",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "billing_domain": {
+          "name": "billing_domain",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "remark": {
+          "name": "remark",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "''"
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp with time zone",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "now()"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "policies": {},
+      "checkConstraints": {},
+      "isRLSEnabled": false
+    },
+    "public.usage_logs": {
+      "name": "usage_logs",
+      "schema": "",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "bigint",
+          "primaryKey": true,
+          "notNull": true,
+          "identity": {
+            "type": "always",
+            "name": "usage_logs_id_seq",
+            "schema": "public",
+            "increment": "1",
+            "startWith": "1",
+            "minValue": "1",
+            "maxValue": "9223372036854775807",
+            "cache": "1",
+            "cycle": false
+          }
+        },
+        "api_key_id": {
+          "name": "api_key_id",
+          "type": "bigint",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "dedupe_key": {
+          "name": "dedupe_key",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "billing_source": {
+          "name": "billing_source",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "subscription_id": {
+          "name": "subscription_id",
+          "type": "bigint",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "bigint",
+          "primaryKey": false,
+          "notNull": true,
+          "default": 0
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp with time zone",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "type": {
+          "name": "type",
+          "type": "smallint",
+          "primaryKey": false,
+          "notNull": true,
+          "default": 2
+        },
+        "content": {
+          "name": "content",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "''"
+        },
+        "username": {
+          "name": "username",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "''"
+        },
+        "token_name": {
+          "name": "token_name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "''"
+        },
+        "model_name": {
+          "name": "model_name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "''"
+        },
+        "quota": {
+          "name": "quota",
+          "type": "bigint",
+          "primaryKey": false,
+          "notNull": true,
+          "default": 0
+        },
+        "prompt_tokens": {
+          "name": "prompt_tokens",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "default": 0
+        },
+        "completion_tokens": {
+          "name": "completion_tokens",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "default": 0
+        },
+        "use_time": {
+          "name": "use_time",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "default": 0
+        },
+        "is_stream": {
+          "name": "is_stream",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": true,
+          "default": false
+        },
+        "channel": {
+          "name": "channel",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "default": 0
+        },
+        "channel_name": {
+          "name": "channel_name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "''"
+        },
+        "token_id": {
+          "name": "token_id",
+          "type": "bigint",
+          "primaryKey": false,
+          "notNull": true,
+          "default": 0
+        },
+        "group_name": {
+          "name": "group_name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "''"
+        },
+        "ip": {
+          "name": "ip",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "''"
+        },
+        "request_id": {
+          "name": "request_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "''"
+        },
+        "upstream_request_id": {
+          "name": "upstream_request_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "other": {
+          "name": "other",
+          "type": "jsonb",
+          "primaryKey": false,
+          "notNull": false
+        }
+      },
+      "indexes": {
+        "usage_logs_created_at_idx": {
+          "name": "usage_logs_created_at_idx",
+          "columns": [
+            {
+              "expression": "created_at",
+              "isExpression": false,
+              "asc": true,
+              "nulls": "last"
+            }
+          ],
+          "isUnique": false,
+          "concurrently": false,
+          "method": "btree",
+          "with": {}
+        },
+        "usage_logs_api_key_created_idx": {
+          "name": "usage_logs_api_key_created_idx",
+          "columns": [
+            {
+              "expression": "api_key_id",
+              "isExpression": false,
+              "asc": true,
+              "nulls": "last"
+            },
+            {
+              "expression": "created_at",
+              "isExpression": false,
+              "asc": true,
+              "nulls": "last"
+            }
+          ],
+          "isUnique": false,
+          "concurrently": false,
+          "method": "btree",
+          "with": {}
+        },
+        "usage_logs_subscription_idx": {
+          "name": "usage_logs_subscription_idx",
+          "columns": [
+            {
+              "expression": "subscription_id",
+              "isExpression": false,
+              "asc": true,
+              "nulls": "last"
+            }
+          ],
+          "isUnique": false,
+          "concurrently": false,
+          "method": "btree",
+          "with": {}
+        }
+      },
+      "foreignKeys": {
+        "usage_logs_api_key_id_api_keys_id_fk": {
+          "name": "usage_logs_api_key_id_api_keys_id_fk",
+          "tableFrom": "usage_logs",
+          "tableTo": "api_keys",
+          "columnsFrom": [
+            "api_key_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {
+        "usage_logs_dedupe_key_unique": {
+          "name": "usage_logs_dedupe_key_unique",
+          "nullsNotDistinct": false,
+          "columns": [
+            "dedupe_key"
+          ]
+        }
+      },
+      "policies": {},
+      "checkConstraints": {},
+      "isRLSEnabled": false
+    },
+    "public.users": {
+      "name": "users",
+      "schema": "",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "bigint",
+          "primaryKey": true,
+          "notNull": true,
+          "identity": {
+            "type": "always",
+            "name": "users_id_seq",
+            "schema": "public",
+            "increment": "1",
+            "startWith": "1",
+            "minValue": "1",
+            "maxValue": "9223372036854775807",
+            "cache": "1",
+            "cycle": false
+          }
+        },
+        "username": {
+          "name": "username",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "password_hash": {
+          "name": "password_hash",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp with time zone",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "now()"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {
+        "users_username_unique": {
+          "name": "users_username_unique",
+          "nullsNotDistinct": false,
+          "columns": [
+            "username"
+          ]
+        }
+      },
+      "policies": {},
+      "checkConstraints": {},
+      "isRLSEnabled": false
+    }
+  },
+  "enums": {},
+  "schemas": {},
+  "sequences": {},
+  "roles": {},
+  "policies": {},
+  "views": {},
+  "_meta": {
+    "columns": {},
+    "schemas": {},
+    "tables": {}
+  }
+}
\ No newline at end of file
diff --git a/packages/db/drizzle/meta/_journal.json b/packages/db/drizzle/meta/_journal.json
index 7ce791e..82df99a 100644
--- a/packages/db/drizzle/meta/_journal.json
+++ b/packages/db/drizzle/meta/_journal.json
@@ -8,6 +8,13 @@
       "when": 1791551016051,
       "tag": "0000_loose_goblin_queen",
       "breakpoints": true
+    },
+    {
+      "idx": 1,
+      "version": "7",
+      "when": 1791878178512,
+      "tag": "0001_aromatic_hawkeye",
+      "breakpoints": true
     }
   ]
 }
\ No newline at end of file
diff --git a/packages/db/src/repos.ts b/packages/db/src/repos.ts
index b3d4498..5e57371 100644
--- a/packages/db/src/repos.ts
+++ b/packages/db/src/repos.ts
@@ -115,6 +115,7 @@ export function createRepos(db: Db) {
       async listAll(filter?: {
         member_id?: number | "unassigned";
         status?: string;
+        billing_domain?: string | "none";
       }): Promise<KeyListRow[]> {
         const conds = [];
         if (filter?.member_id === "unassigned") {
@@ -125,6 +126,11 @@ export function createRepos(db: Db) {
         if (filter?.status) {
           conds.push(eq(apiKeys.status, filter.status));
         }
+        if (filter?.billing_domain === "none") {
+          conds.push(isNull(apiKeys.billing_domain));
+        } else if (filter?.billing_domain) {
+          conds.push(eq(apiKeys.billing_domain, filter.billing_domain));
+        }
         const base = db
           .select({
             id: apiKeys.id,
@@ -132,6 +138,7 @@ export function createRepos(db: Db) {
             key_ciphertext: apiKeys.key_ciphertext,
             status: apiKeys.status,
             member_id: apiKeys.member_id,
+            billing_domain: apiKeys.billing_domain,
             registered_at: apiKeys.registered_at,
             log_synced_at: apiKeys.log_synced_at,
             usage_synced_at: apiKeys.usage_synced_at,
@@ -220,6 +227,7 @@ export function createRepos(db: Db) {
         key_hash: string;
         key_ciphertext: Uint8Array;
         member_id: number | null;
+        billing_domain?: string | null;
         token_name?: string;
       }): Promise<ApiKeyRow> {
         const [row] = await db
@@ -228,6 +236,7 @@ export function createRepos(db: Db) {
             key_hash: values.key_hash,
             key_ciphertext: values.key_ciphertext,
             member_id: values.member_id,
+            billing_domain: values.billing_domain ?? null,
             token_name: values.token_name ?? "",
           })
           .returning();
@@ -404,11 +413,23 @@ export function createRepos(db: Db) {
     },
 
     subscriptions: {
-      async listAll(): Promise<SubscriptionRow[]> {
-        return db
+      async listAll(filter?: {
+        billing_domain?: string | "none";
+      }): Promise<SubscriptionRow[]> {
+        const conds = [];
+        if (filter?.billing_domain === "none") {
+          conds.push(isNull(subscriptions.billing_domain));
+        } else if (filter?.billing_domain) {
+          conds.push(eq(subscriptions.billing_domain, filter.billing_domain));
+        }
+        const base = db
           .select()
           .from(subscriptions)
           .orderBy(desc(subscriptions.period_start));
+        if (conds.length > 0) {
+          return base.where(and(...conds));
+        }
+        return base;
       },
       async findById(id: number): Promise<SubscriptionRow | null> {
         const rows = await db
@@ -451,8 +472,20 @@ export function createRepos(db: Db) {
     },
 
     topups: {
-      async listAll(): Promise<TopupRow[]> {
-        return db.select().from(topups).orderBy(desc(topups.paid_at));
+      async listAll(filter?: {
+        billing_domain?: string | "none";
+      }): Promise<TopupRow[]> {
+        const conds = [];
+        if (filter?.billing_domain === "none") {
+          conds.push(isNull(topups.billing_domain));
+        } else if (filter?.billing_domain) {
+          conds.push(eq(topups.billing_domain, filter.billing_domain));
+        }
+        const base = db.select().from(topups).orderBy(desc(topups.paid_at));
+        if (conds.length > 0) {
+          return base.where(and(...conds));
+        }
+        return base;
       },
       async findById(id: number): Promise<TopupRow | null> {
         const rows = await db
diff --git a/packages/db/src/schema.ts b/packages/db/src/schema.ts
index 037ec04..9c0ca6a 100644
--- a/packages/db/src/schema.ts
+++ b/packages/db/src/schema.ts
@@ -44,6 +44,7 @@ export const apiKeys = pgTable(
     member_id: bigint("member_id", { mode: "number" }).references(
       () => members.id,
     ),
+    billing_domain: text("billing_domain"),
     registered_at: timestamp("registered_at", {
       withTimezone: true,
       mode: "date",
@@ -135,6 +136,7 @@ export const subscriptions = pgTable(
       mode: "number",
     }),
     paid_at: timestamp("paid_at", { withTimezone: true, mode: "date" }),
+    billing_domain: text("billing_domain"),
     remark: text("remark").notNull().default(""),
     created_at: timestamp("created_at", {
       withTimezone: true,
@@ -161,6 +163,7 @@ export const topups = pgTable("topups", {
   payment_provider: text("payment_provider"),
   status: text("status"),
   paid_at: timestamp("paid_at", { withTimezone: true, mode: "date" }).notNull(),
+  billing_domain: text("billing_domain"),
   remark: text("remark").notNull().default(""),
   created_at: timestamp("created_at", {
     withTimezone: true,