diff --git a/packages/vscode/src/quotaProviders.ts b/packages/vscode/src/quotaProviders.ts
index 6e5231de..5dde3b1c 100644
--- a/packages/vscode/src/quotaProviders.ts
+++ b/packages/vscode/src/quotaProviders.ts
@@ -487,16 +487,18 @@ const fetchCodexQuota = async (): Promise<ProviderResult> => {
 
     const windows: Record<string, UsageWindow> = {};
     if (primary) {
-      windows['5h'] = toUsageWindow({
+      const windowSeconds = toNumber(primary.limit_window_seconds);
+      windows[resolveWindowLabel(windowSeconds)] = toUsageWindow({
         usedPercent: toNumber(primary.used_percent),
-        windowSeconds: toNumber(primary.limit_window_seconds),
+        windowSeconds,
         resetAt: toTimestamp(primary.reset_at),
       });
     }
     if (secondary) {
-      windows['weekly'] = toUsageWindow({
+      const windowSeconds = toNumber(secondary.limit_window_seconds);
+      windows[resolveWindowLabel(windowSeconds)] = toUsageWindow({
         usedPercent: toNumber(secondary.used_percent),
-        windowSeconds: toNumber(secondary.limit_window_seconds),
+        windowSeconds,
         resetAt: toTimestamp(secondary.reset_at),
       });
     }
diff --git a/packages/web/server/lib/quota/providers/codex.js b/packages/web/server/lib/quota/providers/codex.js
index 3f12cde0..20a5ffa2 100644
--- a/packages/web/server/lib/quota/providers/codex.js
+++ b/packages/web/server/lib/quota/providers/codex.js
@@ -6,6 +6,7 @@ import {
   toUsageWindow,
   toNumber,
   toTimestamp,
+  resolveWindowLabel,
   formatMoney
 } from '../utils/index.js';
 
@@ -65,16 +66,18 @@ export const fetchQuota = async () => {
 
     const windows = {};
     if (primary) {
-      windows['5h'] = toUsageWindow({
+      const windowSeconds = toNumber(primary.limit_window_seconds);
+      windows[resolveWindowLabel(windowSeconds)] = toUsageWindow({
         usedPercent: toNumber(primary.used_percent),
-        windowSeconds: toNumber(primary.limit_window_seconds),
+        windowSeconds,
         resetAt: toTimestamp(primary.reset_at)
       });
     }
     if (secondary) {
-      windows['weekly'] = toUsageWindow({
+      const windowSeconds = toNumber(secondary.limit_window_seconds);
+      windows[resolveWindowLabel(windowSeconds)] = toUsageWindow({
         usedPercent: toNumber(secondary.used_percent),
-        windowSeconds: toNumber(secondary.limit_window_seconds),
+        windowSeconds,
         resetAt: toTimestamp(secondary.reset_at)
       });
     }
diff --git a/packages/web/server/lib/quota/providers/codex.test.js b/packages/web/server/lib/quota/providers/codex.test.js
new file mode 100644
index 00000000..a7253578
--- /dev/null
+++ b/packages/web/server/lib/quota/providers/codex.test.js
@@ -0,0 +1,48 @@
+import { afterEach, describe, expect, it, vi } from 'vitest';
+
+vi.mock('../../opencode/auth.js', () => ({
+  readAuthFile: () => ({ openai: { access: 'test-token' } }),
+}));
+
+import { fetchQuota } from './codex.js';
+
+afterEach(() => {
+  vi.unstubAllGlobals();
+});
+
+const mockUsage = (rateLimit) => {
+  vi.stubGlobal('fetch', vi.fn().mockResolvedValue({
+    ok: true,
+    json: async () => ({ rate_limit: rateLimit }),
+  }));
+};
+
+describe('Codex quota windows', () => {
+  it('labels a weekly-only primary window from its duration', async () => {
+    mockUsage({
+      primary_window: {
+        used_percent: 3,
+        limit_window_seconds: 604800,
+        reset_at: 1784491827,
+      },
+      secondary_window: null,
+    });
+
+    const result = await fetchQuota();
+
+    expect(result.usage.windows.weekly.usedPercent).toBe(3);
+    expect(result.usage.windows['5h']).toBeUndefined();
+  });
+
+  it('labels five-hour and weekly windows from their durations', async () => {
+    mockUsage({
+      primary_window: { used_percent: 10, limit_window_seconds: 18000 },
+      secondary_window: { used_percent: 20, limit_window_seconds: 604800 },
+    });
+
+    const result = await fetchQuota();
+
+    expect(result.usage.windows['5h'].usedPercent).toBe(10);
+    expect(result.usage.windows.weekly.usedPercent).toBe(20);
+  });
+});