diff --git a/docs-site/src/content/docs/reference/configuration/providers.md b/docs-site/src/content/docs/reference/configuration/providers.md
index e2769ab807..618c016de3 100644
--- a/docs-site/src/content/docs/reference/configuration/providers.md
+++ b/docs-site/src/content/docs/reference/configuration/providers.md
@@ -21,6 +21,18 @@ ocx models provider openrouter on
 
 After GUI registration or OAuth login, the confirmation dialog lets you open the Models page. CLI registration and login print model-management commands; JSON includes structured next steps. `--no-wait` reports pending login, not completion. Start the proxy with `ocx start` before using live model commands.
 
+## Z.ai Coding Plan quota endpoints
+
+The Z.ai quota probe recognizes the international coding Chat base
+`https://api.z.ai/api/coding/paas/v4`, the documented
+[Claude Code Anthropic base](https://docs.z.ai/devpack/tool/claude)
+`https://api.z.ai/api/anthropic`, and the documented
+[Codex Responses base](https://docs.z.ai/devpack/tool/codex)
+`https://api.z.ai/api/v1`. All three read quota from the international monitor with
+Bearer authentication; this does not change the inference URL or imply different
+quota consumption between adapters. Existing BigModel CN monitor selection remains
+separate. Full request URLs such as `/api/v1/responses` are not provider base URLs.
+
 ## Provider-related top-level fields
 
 | Field | Type | Default | Meaning |
diff --git a/src/providers/quota.ts b/src/providers/quota.ts
index 79e6a6bf91..69ee60626c 100644
--- a/src/providers/quota.ts
+++ b/src/providers/quota.ts
@@ -345,14 +345,26 @@ function isCanonicalOllamaCloudBaseUrl(baseUrl?: string): boolean {
   }
 }
 
+function zaiQuotaMonitorHost(baseUrl: string): string | null {
+  // Admission and destination selection must share one mapping: admitting a new
+  // international wire must never fall through to the CN host/authentication scheme.
+  switch (normalizedBaseUrl(baseUrl)) {
+    case ZAI_BASE_URL:
+    case `${ZAI_BASE_URL}/api/coding/paas/v4`:
+    case `${ZAI_BASE_URL}/api/anthropic`:
+    case `${ZAI_BASE_URL}/api/v1`:
+      return ZAI_BASE_URL;
+    case ZAI_CN_BASE_URL:
+    case `${ZAI_CN_BASE_URL}/api/coding/paas/v4`:
+    case `${ZAI_CN_BASE_URL}/api/v1`:
+      return ZAI_CN_BASE_URL;
+    default:
+      return null;
+  }
+}
+
 function isCanonicalZaiBaseUrl(baseUrl: string): boolean {
-  const normalized = normalizedBaseUrl(baseUrl);
-  return normalized === ZAI_BASE_URL
-    || normalized === `${ZAI_BASE_URL}/api/coding/paas/v4`
-    || normalized === ZAI_CN_BASE_URL
-    || normalized === `${ZAI_CN_BASE_URL}/api/coding/paas/v4`
-    // BigModel serves the same GLM Coding Plan on the OpenAI Responses wire at /api/v1.
-    || normalized === `${ZAI_CN_BASE_URL}/api/v1`;
+  return zaiQuotaMonitorHost(baseUrl) !== null;
 }
 
 function isCanonicalMinimaxBaseUrl(baseUrl: string): boolean {
@@ -851,13 +863,10 @@ function parseZaiQuotaLegacyFields(data: Record<string, unknown> | null): Provid
  * host or follow a redirect off-origin.
  */
 async function fetchZaiQuota(provider: string, config: OcxProviderConfig): Promise<ProviderQuotaProbeResult> {
-  if (!isCanonicalZaiBaseUrl(config.baseUrl)) return null;
+  const monitorHost = zaiQuotaMonitorHost(config.baseUrl);
+  if (!monitorHost) return null;
   const apiKey = resolveProviderApiKey(config.apiKey)?.trim();
   if (!apiKey) return null;
-  const normalized = normalizedBaseUrl(config.baseUrl);
-  const monitorHost = normalized === ZAI_BASE_URL || normalized === `${ZAI_BASE_URL}/api/coding/paas/v4`
-    ? ZAI_BASE_URL
-    : ZAI_CN_BASE_URL;
   const authorization = monitorHost === ZAI_CN_BASE_URL ? apiKey : `Bearer ${apiKey}`;
   const response = await fetch(`${monitorHost}/api/monitor/usage/quota/limit`, {
     headers: { Accept: "application/json", Authorization: authorization },
diff --git a/structure/05_gui-and-management-api.md b/structure/05_gui-and-management-api.md
index 2c21897855..f9d4fb79ec 100644
--- a/structure/05_gui-and-management-api.md
+++ b/structure/05_gui-and-management-api.md
@@ -506,6 +506,22 @@ once it exceeds 200) with the upstream content-type, body kind (`sse / json / ot
 body sample, and the extracted usage. Off by default; the hot path is guarded so production stays
 untouched.
 
+## Z.ai quota destination ownership
+
+`src/providers/quota.ts` uses one exact normalized-base mapping for both Z.ai quota
+eligibility and monitor selection. International root, coding Chat, Anthropic and
+Responses bases use `api.z.ai` with Bearer authentication. Existing BigModel CN root,
+coding Chat and Responses bases use `open.bigmodel.cn` with the raw key. Unsupported
+bases produce no probe; redirect refusal and quota parsing/cache semantics are unchanged.
+
+[Decision Log]
+- 목적과 의도: Restore quota reads for documented international Anthropic and Responses bases without changing their inference configuration.
+- 기존 구현 및 제약 조건: Admission omitted both bases; a separate monitor ternary treated all other admitted bases as CN.
+- 검토한 주요 대안: Add the same paths to two lists, accept any path on either host, or share one exact mapping.
+- 선택한 방식: Share one base-to-monitor mapping and preserve the existing CN allowlist.
+- 다른 대안 대신 이 방식을 선택한 이유: A single mapping prevents new international admission from silently selecting the CN authentication scheme, without admitting unrelated pay-as-you-go paths.
+- 장점, 단점 및 영향: No config migration or inference change; new documented endpoints still require an explicit reviewed mapping entry. Quota-consumption differences are not inferred from adapter choice.
+
 ## Provider debug logging
 
 Provider transport diagnostics (dropped SSE frames, adapter dial/stream events, etc.) are opt-in:
diff --git a/tests/providers/provider-quota.test.ts b/tests/providers/provider-quota.test.ts
index a8d4bef728..56d69951d5 100644
--- a/tests/providers/provider-quota.test.ts
+++ b/tests/providers/provider-quota.test.ts
@@ -1014,6 +1014,70 @@ describe("fetchProviderQuotaReports", () => {
     expect(seen[0]?.redirect).toBe("error");
   });
 
+  test.each([
+    ["https://api.z.ai/api/anthropic", "anthropic"],
+    ["https://api.z.ai/api/v1", "openai-responses"],
+    ["https://API.Z.AI/api/anthropic/", "anthropic"],
+    ["https://api.z.ai/api/v1/", "openai-responses"],
+  ] as const)("Z.AI quota uses the international monitor for %s (%s)", async (baseUrl, adapter) => {
+    const seen: Array<{ url: string; authorization: string | null; redirect?: RequestRedirect }> = [];
+    globalThis.fetch = (async (input: RequestInfo | URL, init?: RequestInit) => {
+      seen.push({ url: String(input), authorization: new Headers(init?.headers).get("authorization"), redirect: init?.redirect });
+      return Response.json({ success: true, data: { limits: [
+        { type: "TOKENS_LIMIT", unit: 3, number: 5, percentage: 25 },
+      ] } });
+    }) as typeof fetch;
+    const config = keyQuotaConfig("zai", baseUrl);
+    config.providers.zai!.adapter = adapter;
+
+    const result = await fetchProviderQuotaReports(config, true);
+
+    expect(result.reports).toHaveLength(1);
+    expect(result.reports[0]?.source).toBe("zai:quota-limit");
+    expect(result.reports[0]?.quota.fiveHourPercent).toBe(25);
+    expect(seen).toEqual([{
+      url: "https://api.z.ai/api/monitor/usage/quota/limit",
+      authorization: "Bearer zai-secret",
+      redirect: "error",
+    }]);
+  });
+
+  test.each([
+    "https://api.z.ai.example/api/anthropic",
+    "http://api.z.ai/api/anthropic",
+    "https://api.z.ai:8443/api/v1",
+    "https://api.z.ai/api/anthropic?region=cn",
+    "https://api.z.ai/api/v1#fragment",
+    "https://api.z.ai/api/anthropic/v1/messages",
+    "https://api.z.ai/api/v1/responses",
+    "https://api.z.ai/api/paas/v4",
+    "https://open.bigmodel.cn/api/anthropic",
+  ])("Z.AI quota does not probe unsupported base %s", async baseUrl => {
+    let calls = 0;
+    globalThis.fetch = (async () => {
+      calls += 1;
+      return new Response("unexpected", { status: 500 });
+    }) as typeof fetch;
+
+    expect((await fetchProviderQuotaReports(keyQuotaConfig("zai", baseUrl), true)).reports).toEqual([]);
+    expect(calls).toBe(0);
+  });
+
+  test.each(["username", "password"] as const)("Z.AI quota rejects URL %s before probing", async field => {
+    // Construct dummy userinfo instead of embedding an email-shaped fixture in source.
+    // Keep this distinct from host/path rejection: the monitor host would otherwise match.
+    const url = new URL("https://api.z.ai/api/anthropic");
+    url[field] = "fixture";
+    let calls = 0;
+    globalThis.fetch = (async () => {
+      calls += 1;
+      return new Response("unexpected", { status: 500 });
+    }) as typeof fetch;
+
+    expect((await fetchProviderQuotaReports(keyQuotaConfig("zai", url.href), true)).reports).toEqual([]);
+    expect(calls).toBe(0);
+  });
+
   test("Z.AI quota probes the BigModel region from the provider's own host", async () => {
     const seen: Array<{ url: string; authorization?: string; redirect?: RequestRedirect }> = [];
     globalThis.fetch = (async (input: RequestInfo | URL, init?: RequestInit) => {