diff --git a/src/web-server/routes/bar-pool-account-quota-adapter.ts b/src/web-server/routes/bar-pool-account-quota-adapter.ts
new file mode 100644
index 00000000..09e3eab0
--- /dev/null
+++ b/src/web-server/routes/bar-pool-account-quota-adapter.ts
@@ -0,0 +1,213 @@
+/**
+ * Bar-only adapter for CLIProxy pool-account quota.
+ *
+ * Bar's cache and row builder consume the legacy Antigravity QuotaResult shape.
+ * Claude and Codex expose richer window-based results, so this adapter dispatches
+ * to their single-account fetchers and collapses the binding core window into
+ * the existing percentage/reset fields. Other providers retain the legacy
+ * fetcher's behavior, including Antigravity and quota_not_supported results.
+ */
+
+import type { CLIProxyProvider } from '../../cliproxy/types';
+import type { QuotaResult } from '../../cliproxy/quota/quota-fetcher';
+import { fetchAccountQuota } from '../../cliproxy/quota/quota-fetcher';
+import {
+  getCachedQuota,
+  invalidateQuotaCache,
+  setCachedQuota,
+} from '../../cliproxy/quota/quota-response-cache';
+import {
+  buildClaudeCoreUsageSummary,
+  fetchClaudeQuota,
+} from '../../cliproxy/quota/quota-fetcher-claude';
+import {
+  buildCodexCoreUsageSummary,
+  fetchCodexQuota,
+} from '../../cliproxy/quota/quota-fetcher-codex';
+import type {
+  ClaudeQuotaResult,
+  CodexQuotaResult,
+  QuotaErrorMetadata,
+} from '../../cliproxy/quota/quota-types';
+
+interface BindingWindow {
+  name: string;
+  displayName: string;
+  remainingPercent: number;
+  resetAt: string | null;
+}
+
+interface ProviderQuotaResult extends QuotaErrorMetadata {
+  success: boolean;
+  lastUpdated: number;
+  error?: string;
+  accountId?: string;
+  needsReauth?: boolean;
+}
+
+type RawWindowQuotaResult = ClaudeQuotaResult | CodexQuotaResult;
+
+const rawQuotaByNormalizedResult = new WeakMap<QuotaResult, RawWindowQuotaResult>();
+
+export interface BarPoolAccountQuotaFetcherDeps {
+  fetchLegacyAccountQuota: (provider: CLIProxyProvider, accountId: string) => Promise<QuotaResult>;
+  fetchClaudeQuota: (accountId: string) => Promise<ClaudeQuotaResult>;
+  fetchCodexQuota: (accountId: string) => Promise<CodexQuotaResult>;
+}
+
+function normalizeRemainingPercent(value: number): number {
+  return Math.max(0, Math.min(100, value));
+}
+
+function isPresent<T>(value: T | null | undefined): value is T {
+  return value !== null && value !== undefined;
+}
+
+function resetTimestamp(resetAt: string | null): number {
+  if (!resetAt) return Number.POSITIVE_INFINITY;
+  const timestamp = Date.parse(resetAt);
+  return Number.isFinite(timestamp) ? timestamp : Number.POSITIVE_INFINITY;
+}
+
+function pickBindingWindow(windows: BindingWindow[]): BindingWindow | null {
+  return (
+    windows
+      .filter((window) => Number.isFinite(window.remainingPercent))
+      .sort(
+        (left, right) =>
+          left.remainingPercent - right.remainingPercent ||
+          resetTimestamp(left.resetAt) - resetTimestamp(right.resetAt)
+      )[0] ?? null
+  );
+}
+
+function normalizeResult(
+  result: ProviderQuotaResult,
+  bindingWindow: BindingWindow | null
+): QuotaResult {
+  return {
+    success: result.success,
+    models:
+      result.success && bindingWindow
+        ? [
+            {
+              name: bindingWindow.name,
+              displayName: bindingWindow.displayName,
+              percentage: normalizeRemainingPercent(bindingWindow.remainingPercent),
+              resetTime: bindingWindow.resetAt,
+            },
+          ]
+        : [],
+    lastUpdated: result.lastUpdated,
+    httpStatus: result.httpStatus,
+    errorCode: result.errorCode,
+    errorDetail: result.errorDetail,
+    isForbidden: result.isForbidden,
+    error: result.error,
+    actionHint: result.actionHint,
+    retryable: result.retryable,
+    needsReauth: result.needsReauth,
+    accountId: result.accountId,
+  };
+}
+
+function normalizeClaudeQuota(result: ClaudeQuotaResult): QuotaResult {
+  const coreUsage =
+    result.coreUsage?.fiveHour || result.coreUsage?.weekly
+      ? result.coreUsage
+      : buildClaudeCoreUsageSummary(result.windows);
+  const bindingWindow = pickBindingWindow(
+    [coreUsage?.fiveHour, coreUsage?.weekly].filter(isPresent).map((window) => ({
+      name: window.rateLimitType,
+      displayName: window.label,
+      remainingPercent: window.remainingPercent,
+      resetAt: window.resetAt,
+    }))
+  );
+
+  const normalized = normalizeResult(result, bindingWindow);
+  rawQuotaByNormalizedResult.set(normalized, result);
+  return normalized;
+}
+
+function normalizeCodexQuota(result: CodexQuotaResult): QuotaResult {
+  const coreUsage =
+    result.coreUsage?.fiveHour || result.coreUsage?.weekly
+      ? result.coreUsage
+      : buildCodexCoreUsageSummary(result.windows);
+  const bindingWindow = pickBindingWindow(
+    [coreUsage?.fiveHour, coreUsage?.weekly].filter(isPresent).map((window) => ({
+      name: window.label,
+      displayName: window.label,
+      remainingPercent: window.remainingPercent,
+      resetAt: window.resetAt,
+    }))
+  );
+
+  const normalized = normalizeResult(result, bindingWindow);
+  rawQuotaByNormalizedResult.set(normalized, result);
+  return normalized;
+}
+
+function isWindowQuotaResult(value: unknown): value is RawWindowQuotaResult {
+  return (
+    typeof value === 'object' &&
+    value !== null &&
+    'windows' in value &&
+    Array.isArray((value as { windows?: unknown }).windows)
+  );
+}
+
+export function getCachedBarPoolAccountQuota<T>(
+  provider: CLIProxyProvider | string,
+  accountId: string
+): T | null {
+  const cached = getCachedQuota<unknown>(provider, accountId);
+  if (!cached) return null;
+  if (provider === 'claude' && isWindowQuotaResult(cached)) {
+    return normalizeClaudeQuota(cached as ClaudeQuotaResult) as T;
+  }
+  if (provider === 'codex' && isWindowQuotaResult(cached)) {
+    return normalizeCodexQuota(cached as CodexQuotaResult) as T;
+  }
+  return cached as T;
+}
+
+export function setCachedBarPoolAccountQuota<T>(
+  provider: CLIProxyProvider | string,
+  accountId: string,
+  data: T
+): void {
+  const raw =
+    typeof data === 'object' && data !== null
+      ? rawQuotaByNormalizedResult.get(data as unknown as QuotaResult)
+      : undefined;
+  setCachedQuota(provider, accountId, raw ?? data);
+}
+
+export function invalidateCachedBarPoolAccountQuota(
+  provider: CLIProxyProvider | string,
+  accountId: string
+): void {
+  invalidateQuotaCache(provider, accountId);
+}
+
+export function createBarPoolAccountQuotaFetcher(
+  deps: BarPoolAccountQuotaFetcherDeps
+): (provider: CLIProxyProvider, accountId: string) => Promise<QuotaResult> {
+  return async (provider, accountId) => {
+    if (provider === 'claude') {
+      return normalizeClaudeQuota(await deps.fetchClaudeQuota(accountId));
+    }
+    if (provider === 'codex') {
+      return normalizeCodexQuota(await deps.fetchCodexQuota(accountId));
+    }
+    return deps.fetchLegacyAccountQuota(provider, accountId);
+  };
+}
+
+export const fetchBarPoolAccountQuota = createBarPoolAccountQuotaFetcher({
+  fetchLegacyAccountQuota: fetchAccountQuota,
+  fetchClaudeQuota,
+  fetchCodexQuota,
+});
diff --git a/src/web-server/routes/bar-routes.ts b/src/web-server/routes/bar-routes.ts
index 3acc5fb9..f68328fc 100644
--- a/src/web-server/routes/bar-routes.ts
+++ b/src/web-server/routes/bar-routes.ts
@@ -631,11 +631,11 @@ export function createBarRouter(deps: BarRouterDeps): Router {
 
 import { getAllAccountsSummary } from '../../cliproxy/accounts/query';
 import {
-  getCachedQuota,
-  setCachedQuota,
-  invalidateQuotaCache,
-} from '../../cliproxy/quota/quota-response-cache';
-import { fetchAccountQuota } from '../../cliproxy/quota/quota-fetcher';
+  fetchBarPoolAccountQuota,
+  getCachedBarPoolAccountQuota,
+  invalidateCachedBarPoolAccountQuota,
+  setCachedBarPoolAccountQuota,
+} from './bar-pool-account-quota-adapter';
 import { getTodayCostByAccount } from '../usage/data-aggregator';
 import { loadCliproxySnapshotDetails } from '../usage/cliproxy-snapshot-reader';
 import { getCachedDailyData, getCachedHourlyData } from '../usage/aggregator';
@@ -644,10 +644,10 @@ import { getNativeAccountRows, getCachedNativeAccountRows } from '../usage/nativ
 /** Production bar router — wired to real dependencies */
 const barRouter: Router = createBarRouter({
   getAllAccountsSummary,
-  getCachedQuota,
-  setCachedQuota,
-  invalidateQuotaCache,
-  fetchAccountQuota,
+  getCachedQuota: getCachedBarPoolAccountQuota,
+  setCachedQuota: setCachedBarPoolAccountQuota,
+  invalidateQuotaCache: invalidateCachedBarPoolAccountQuota,
+  fetchAccountQuota: fetchBarPoolAccountQuota,
   getTodayCostByAccount,
   loadCliproxyDetails: loadCliproxySnapshotDetails,
   loadDailyUsage: () => getCachedDailyData(),
diff --git a/tests/unit/web-server/bar-pool-account-quota-adapter.test.ts b/tests/unit/web-server/bar-pool-account-quota-adapter.test.ts
new file mode 100644
index 00000000..01da3de3
--- /dev/null
+++ b/tests/unit/web-server/bar-pool-account-quota-adapter.test.ts
@@ -0,0 +1,213 @@
+import { describe, expect, it } from 'bun:test';
+import type { QuotaResult } from '../../../src/cliproxy/quota/quota-fetcher';
+import type {
+  ClaudeQuotaResult,
+  CodexQuotaResult,
+} from '../../../src/cliproxy/quota/quota-types';
+import {
+  createBarPoolAccountQuotaFetcher,
+  type BarPoolAccountQuotaFetcherDeps,
+} from '../../../src/web-server/routes/bar-pool-account-quota-adapter';
+
+function agyResult(overrides: Partial<QuotaResult> = {}): QuotaResult {
+  return {
+    success: true,
+    models: [{ name: 'gemini-pro', percentage: 81, resetTime: null }],
+    lastUpdated: 1,
+    ...overrides,
+  };
+}
+
+function claudeResult(overrides: Partial<ClaudeQuotaResult> = {}): ClaudeQuotaResult {
+  return {
+    success: true,
+    windows: [],
+    coreUsage: {
+      fiveHour: {
+        rateLimitType: 'five_hour',
+        label: '5h usage limit',
+        remainingPercent: 72,
+        resetAt: '2026-07-18T16:00:00.000Z',
+        status: 'allowed',
+      },
+      weekly: {
+        rateLimitType: 'seven_day',
+        label: 'Weekly usage limit',
+        remainingPercent: 45,
+        resetAt: '2026-07-21T12:00:00.000Z',
+        status: 'allowed_warning',
+      },
+    },
+    lastUpdated: 2,
+    accountId: 'claude@example.com',
+    ...overrides,
+  };
+}
+
+function codexResult(overrides: Partial<CodexQuotaResult> = {}): CodexQuotaResult {
+  return {
+    success: true,
+    windows: [],
+    coreUsage: {
+      fiveHour: {
+        label: 'Primary',
+        remainingPercent: 36,
+        resetAfterSeconds: 3600,
+        resetAt: '2026-07-18T14:00:00.000Z',
+      },
+      weekly: {
+        label: 'Secondary',
+        remainingPercent: 64,
+        resetAfterSeconds: 259200,
+        resetAt: '2026-07-21T13:00:00.000Z',
+      },
+    },
+    planType: 'pro',
+    lastUpdated: 3,
+    accountId: 'codex@example.com',
+    ...overrides,
+  };
+}
+
+function createDeps(
+  overrides: Partial<BarPoolAccountQuotaFetcherDeps> = {}
+): BarPoolAccountQuotaFetcherDeps {
+  return {
+    fetchLegacyAccountQuota: async () => agyResult(),
+    fetchClaudeQuota: async () => claudeResult(),
+    fetchCodexQuota: async () => codexResult(),
+    ...overrides,
+  };
+}
+
+describe('Bar pool account quota adapter', () => {
+  it('maps the most restrictive Claude core window to percentage and reset', async () => {
+    const fetchQuota = createBarPoolAccountQuotaFetcher(createDeps());
+
+    const result = await fetchQuota('claude', 'claude@example.com');
+
+    expect(result.success).toBe(true);
+    expect(result.models).toEqual([
+      {
+        name: 'seven_day',
+        displayName: 'Weekly usage limit',
+        percentage: 45,
+        resetTime: '2026-07-21T12:00:00.000Z',
+      },
+    ]);
+    expect(result.accountId).toBe('claude@example.com');
+  });
+
+  it('maps the most restrictive Codex core window to percentage and reset', async () => {
+    const fetchQuota = createBarPoolAccountQuotaFetcher(createDeps());
+
+    const result = await fetchQuota('codex', 'codex@example.com');
+
+    expect(result.success).toBe(true);
+    expect(result.models).toEqual([
+      {
+        name: 'Primary',
+        displayName: 'Primary',
+        percentage: 36,
+        resetTime: '2026-07-18T14:00:00.000Z',
+      },
+    ]);
+    expect(result.accountId).toBe('codex@example.com');
+  });
+
+  it('preserves Claude transient failure metadata', async () => {
+    const fetchQuota = createBarPoolAccountQuotaFetcher(
+      createDeps({
+        fetchClaudeQuota: async () =>
+          claudeResult({
+            success: false,
+            windows: [],
+            coreUsage: { fiveHour: null, weekly: null },
+            error: 'Claude OAuth usage request timeout',
+            errorCode: 'network_timeout',
+            retryable: true,
+          }),
+      })
+    );
+
+    const result = await fetchQuota('claude', 'claude@example.com');
+
+    expect(result).toMatchObject({
+      success: false,
+      models: [],
+      error: 'Claude OAuth usage request timeout',
+      errorCode: 'network_timeout',
+      retryable: true,
+    });
+  });
+
+  it('preserves Codex reauthentication state', async () => {
+    const fetchQuota = createBarPoolAccountQuotaFetcher(
+      createDeps({
+        fetchCodexQuota: async () =>
+          codexResult({
+            success: false,
+            windows: [],
+            coreUsage: { fiveHour: null, weekly: null },
+            error: 'Token expired or invalid',
+            errorCode: 'reauth_required',
+            httpStatus: 401,
+            needsReauth: true,
+            retryable: false,
+          }),
+      })
+    );
+
+    const result = await fetchQuota('codex', 'codex@example.com');
+
+    expect(result).toMatchObject({
+      success: false,
+      models: [],
+      errorCode: 'reauth_required',
+      httpStatus: 401,
+      needsReauth: true,
+      retryable: false,
+    });
+  });
+
+  it('delegates Antigravity unchanged to the legacy fetcher', async () => {
+    const expected = agyResult();
+    const calls: Array<[string, string]> = [];
+    const fetchQuota = createBarPoolAccountQuotaFetcher(
+      createDeps({
+        fetchLegacyAccountQuota: async (provider, accountId) => {
+          calls.push([provider, accountId]);
+          return expected;
+        },
+      })
+    );
+
+    const result = await fetchQuota('agy', 'agy@example.com');
+
+    expect(result).toBe(expected);
+    expect(calls).toEqual([['agy', 'agy@example.com']]);
+  });
+
+  it('preserves legacy unsupported-provider semantics', async () => {
+    const fetchQuota = createBarPoolAccountQuotaFetcher(
+      createDeps({
+        fetchLegacyAccountQuota: async (provider) =>
+          agyResult({
+            success: false,
+            models: [],
+            error: `Quota not supported for provider: ${provider}`,
+            errorCode: 'quota_not_supported',
+          }),
+      })
+    );
+
+    const result = await fetchQuota('kiro', 'kiro-account');
+
+    expect(result).toMatchObject({
+      success: false,
+      models: [],
+      errorCode: 'quota_not_supported',
+    });
+  });
+
+});
diff --git a/tests/unit/web-server/bar-pool-account-quota-cache.test.ts b/tests/unit/web-server/bar-pool-account-quota-cache.test.ts
new file mode 100644
index 00000000..9a169377
--- /dev/null
+++ b/tests/unit/web-server/bar-pool-account-quota-cache.test.ts
@@ -0,0 +1,120 @@
+import { expect, it } from 'bun:test';
+import express from 'express';
+import type { Server } from 'node:http';
+import type { QuotaResult } from '../../../src/cliproxy/quota/quota-fetcher';
+import type { ClaudeQuotaResult } from '../../../src/cliproxy/quota/quota-types';
+import {
+  clearQuotaCache,
+  getCachedQuota,
+} from '../../../src/cliproxy/quota/quota-response-cache';
+import {
+  createBarPoolAccountQuotaFetcher,
+  getCachedBarPoolAccountQuota,
+  invalidateCachedBarPoolAccountQuota,
+  setCachedBarPoolAccountQuota,
+} from '../../../src/web-server/routes/bar-pool-account-quota-adapter';
+import {
+  createBarRouter,
+  resetForceFreshDebounce,
+} from '../../../src/web-server/routes/bar-routes';
+
+it('stores normalized Claude quota in the existing Bar cache', async () => {
+  clearQuotaCache();
+  let fetchCount = 0;
+  const fetchQuota = createBarPoolAccountQuotaFetcher({
+    fetchLegacyAccountQuota: async () => {
+      throw new Error('Legacy fetcher should not be called');
+    },
+    fetchClaudeQuota: async () => {
+      fetchCount += 1;
+      return {
+        success: true,
+        windows: [],
+        coreUsage: {
+          fiveHour: {
+            rateLimitType: 'five_hour',
+            label: '5h usage limit',
+            remainingPercent: 72,
+            resetAt: '2026-07-18T16:00:00.000Z',
+            status: 'allowed',
+          },
+          weekly: {
+            rateLimitType: 'seven_day',
+            label: 'Weekly usage limit',
+            remainingPercent: 45,
+            resetAt: '2026-07-21T12:00:00.000Z',
+            status: 'allowed_warning',
+          },
+        },
+        lastUpdated: 2,
+        accountId: 'claude@example.com',
+      };
+    },
+    fetchCodexQuota: async () => {
+      throw new Error('Codex fetcher should not be called');
+    },
+  });
+  const app = express();
+  app.use(
+    '/api/bar',
+    createBarRouter({
+      getAllAccountsSummary: () =>
+        ({
+          claude: [
+            {
+              id: 'claude@example.com',
+              provider: 'claude',
+              nickname: 'Claude pool',
+              paused: false,
+              isDefault: true,
+              tokenFile: 'claude-claude_example_com.json',
+              createdAt: '2026-07-18T00:00:00.000Z',
+            },
+          ],
+        }) as never,
+      getCachedQuota: getCachedBarPoolAccountQuota,
+      setCachedQuota: setCachedBarPoolAccountQuota,
+      invalidateQuotaCache: invalidateCachedBarPoolAccountQuota,
+      fetchAccountQuota: fetchQuota,
+      getTodayCostByAccount: () => ({}),
+      loadCliproxyDetails: async () => [],
+      loadDailyUsage: async () => [],
+      loadHourlyUsage: async () => [],
+    })
+  );
+
+  resetForceFreshDebounce();
+  const server = await new Promise<Server>((resolve, reject) => {
+    const instance = app.listen(0, '127.0.0.1');
+    instance.once('error', reject);
+    instance.once('listening', () => resolve(instance));
+  });
+
+  try {
+    const address = server.address();
+    if (!address || typeof address === 'string') throw new Error('No server address');
+    const url = `http://127.0.0.1:${address.port}/api/bar/summary`;
+    const first = (await (await fetch(url)).json()) as Array<Record<string, unknown>>;
+    const second = (await (await fetch(url)).json()) as Array<Record<string, unknown>>;
+
+    expect(fetchCount).toBe(1);
+    expect(first[0]).toMatchObject({
+      quota_percentage: 45,
+      next_reset: '2026-07-21T12:00:00.000Z',
+      quotaStatus: 'ok',
+      cached: false,
+    });
+    expect(second[0]).toMatchObject({
+      quota_percentage: 45,
+      next_reset: '2026-07-21T12:00:00.000Z',
+      quotaStatus: 'ok',
+      cached: true,
+    });
+    const sharedCache = getCachedQuota<ClaudeQuotaResult>('claude', 'claude@example.com');
+    expect(sharedCache?.windows).toEqual([]);
+    expect((sharedCache as ClaudeQuotaResult & Partial<QuotaResult>)?.models).toBeUndefined();
+  } finally {
+    await new Promise<void>((resolve) => server.close(() => resolve()));
+    clearQuotaCache();
+  }
+});