diff --git a/src/agents/auth-health.test.ts b/src/agents/auth-health.test.ts
index 2607efecf97..fe782ec3039 100644
--- a/src/agents/auth-health.test.ts
+++ b/src/agents/auth-health.test.ts
@@ -1,4 +1,15 @@
-import { afterEach, describe, expect, it, vi } from "vitest";
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+
+const { readCodexCliCredentialsCachedMock } = vi.hoisted(() => ({
+  readCodexCliCredentialsCachedMock: vi.fn(() => null),
+}));
+
+vi.mock("./cli-credentials.js", () => ({
+  readCodexCliCredentialsCached: readCodexCliCredentialsCachedMock,
+  readMiniMaxCliCredentialsCached: () => null,
+  resetCliCredentialCachesForTest: () => undefined,
+}));
+
 import {
   buildAuthHealthSummary,
   DEFAULT_OAUTH_WARN_MS,
@@ -16,6 +27,11 @@ describe("buildAuthHealthSummary", () => {
     vi.restoreAllMocks();
   });
 
+  beforeEach(() => {
+    readCodexCliCredentialsCachedMock.mockReset();
+    readCodexCliCredentialsCachedMock.mockReturnValue(null);
+  });
+
   it("classifies OAuth and API key profiles", () => {
     vi.spyOn(Date, "now").mockReturnValue(now);
     const store = {
@@ -58,13 +74,12 @@ describe("buildAuthHealthSummary", () => {
     const statuses = profileStatuses(summary);
 
     expect(statuses["anthropic:ok"]).toBe("ok");
-    // OAuth credentials with refresh tokens are auto-renewable, so they report "ok"
-    expect(statuses["anthropic:expiring"]).toBe("ok");
-    expect(statuses["anthropic:expired"]).toBe("ok");
+    expect(statuses["anthropic:expiring"]).toBe("expiring");
+    expect(statuses["anthropic:expired"]).toBe("expired");
     expect(statuses["anthropic:api"]).toBe("static");
 
     const provider = summary.providers.find((entry) => entry.provider === "anthropic");
-    expect(provider?.status).toBe("ok");
+    expect(provider?.status).toBe("expired");
   });
 
   it("reports expired for OAuth without a refresh token", () => {
@@ -92,6 +107,38 @@ describe("buildAuthHealthSummary", () => {
     expect(statuses["google:no-refresh"]).toBe("expired");
   });
 
+  it("prefers fresher imported external OAuth credentials when reporting health", () => {
+    vi.spyOn(Date, "now").mockReturnValue(now);
+    readCodexCliCredentialsCachedMock.mockReturnValue({
+      type: "oauth",
+      provider: "openai-codex",
+      access: "fresh-cli-access",
+      refresh: "fresh-cli-refresh",
+      expires: now + DEFAULT_OAUTH_WARN_MS + 60_000,
+      accountId: "acct-cli",
+    });
+    const store = {
+      version: 1,
+      profiles: {
+        "openai-codex:default": {
+          type: "oauth" as const,
+          provider: "openai-codex",
+          access: "expired-access",
+          refresh: "expired-refresh",
+          expires: now - 10_000,
+        },
+      },
+    };
+
+    const summary = buildAuthHealthSummary({
+      store,
+      warnAfterMs: DEFAULT_OAUTH_WARN_MS,
+    });
+
+    const statuses = profileStatuses(summary);
+    expect(statuses["openai-codex:default"]).toBe("ok");
+  });
+
   it("marks token profiles with invalid expires as missing with reason code", () => {
     vi.spyOn(Date, "now").mockReturnValue(now);
     const store = {
diff --git a/src/agents/auth-health.ts b/src/agents/auth-health.ts
index d685576c4e9..ef3217f6444 100644
--- a/src/agents/auth-health.ts
+++ b/src/agents/auth-health.ts
@@ -5,6 +5,7 @@ import {
   resolveTokenExpiryState,
 } from "./auth-profiles/credential-state.js";
 import { resolveAuthProfileDisplayLabel } from "./auth-profiles/display.js";
+import { resolveEffectiveOAuthCredential } from "./auth-profiles/effective-oauth.js";
 import type { AuthProfileCredential, AuthProfileStore } from "./auth-profiles/types.js";
 import { normalizeProviderId } from "./provider-id.js";
 
@@ -161,22 +162,21 @@ function buildProfileHealth(params: {
     };
   }
 
-  const hasRefreshToken = typeof credential.refresh === "string" && credential.refresh.length > 0;
+  const effectiveCredential = resolveEffectiveOAuthCredential({
+    profileId,
+    credential,
+  });
   const { status: rawStatus, remainingMs } = resolveOAuthStatus(
-    credential.expires,
+    effectiveCredential.expires,
     now,
     warnAfterMs,
   );
-  // OAuth credentials with a valid refresh token auto-renew on first API call,
-  // so don't warn about access token expiration.
-  const status =
-    hasRefreshToken && (rawStatus === "expired" || rawStatus === "expiring") ? "ok" : rawStatus;
   return {
     profileId,
     provider,
     type: "oauth",
-    status,
-    expiresAt: credential.expires,
+    status: rawStatus,
+    expiresAt: effectiveCredential.expires,
     remainingMs,
     source,
     label,
diff --git a/src/agents/auth-profiles/effective-oauth.ts b/src/agents/auth-profiles/effective-oauth.ts
new file mode 100644
index 00000000000..8768982acd8
--- /dev/null
+++ b/src/agents/auth-profiles/effective-oauth.ts
@@ -0,0 +1,21 @@
+import {
+  readManagedExternalCliCredential,
+  shouldReplaceStoredOAuthCredential,
+} from "./external-cli-sync.js";
+import type { OAuthCredential } from "./types.js";
+
+export function resolveEffectiveOAuthCredential(params: {
+  profileId: string;
+  credential: OAuthCredential;
+}): OAuthCredential {
+  const imported = readManagedExternalCliCredential({
+    profileId: params.profileId,
+    credential: params.credential,
+  });
+  if (!imported) {
+    return params.credential;
+  }
+  return shouldReplaceStoredOAuthCredential(params.credential, imported)
+    ? imported
+    : params.credential;
+}
diff --git a/src/agents/auth-profiles/oauth.ts b/src/agents/auth-profiles/oauth.ts
index 52226ce60cb..a7c7d9a0a0c 100644
--- a/src/agents/auth-profiles/oauth.ts
+++ b/src/agents/auth-profiles/oauth.ts
@@ -24,6 +24,7 @@ import {
 } from "./constants.js";
 import { resolveTokenExpiryState } from "./credential-state.js";
 import { formatAuthDoctorHint } from "./doctor.js";
+import { resolveEffectiveOAuthCredential } from "./effective-oauth.js";
 import {
   areOAuthCredentialsEquivalent,
   readManagedExternalCliCredential,
@@ -753,11 +754,16 @@ async function tryResolveOAuthProfile(
     return null;
   }
 
-  if (Date.now() < cred.expires) {
+  const effectiveCred = resolveEffectiveOAuthCredential({
+    profileId,
+    credential: cred,
+  });
+
+  if (Date.now() < effectiveCred.expires) {
     return await buildOAuthProfileResult({
-      provider: cred.provider,
-      credentials: cred,
-      email: cred.email,
+      provider: effectiveCred.provider,
+      credentials: effectiveCred,
+      email: effectiveCred.email ?? cred.email,
     });
   }
 
@@ -904,12 +910,16 @@ export async function resolveApiKeyForProfile(
       agentDir: params.agentDir,
       cred,
     }) ?? cred;
+  const effectiveOAuthCred = resolveEffectiveOAuthCredential({
+    profileId,
+    credential: oauthCred,
+  });
 
-  if (Date.now() < oauthCred.expires) {
+  if (Date.now() < effectiveOAuthCred.expires) {
     return await buildOAuthProfileResult({
-      provider: oauthCred.provider,
-      credentials: oauthCred,
-      email: oauthCred.email,
+      provider: effectiveOAuthCred.provider,
+      credentials: effectiveOAuthCred,
+      email: effectiveOAuthCred.email,
     });
   }