From d23577535349200b169e901e4fc9817f32191562 Mon Sep 17 00:00:00 2001
From: Yum-wu <118118663+Yum-wu@users.noreply.github.com>
Date: Thu, 17 Sep 2026 18:57:53 +0800
Subject: [PATCH 1/3] fix(retry): extend transient-5xx replay to
 openai-responses

---
 src/providers/key-failover.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/providers/key-failover.ts b/src/providers/key-failover.ts
index d5ccd759e3..575b8e4b0e 100644
--- a/src/providers/key-failover.ts
+++ b/src/providers/key-failover.ts
@@ -306,7 +306,7 @@ export function rateLimitRetryPolicyFor(
  * explicitly disabled, not key-auth, or not the `openai-chat` adapter.
  *
  * The adapter gate is part of the accepted scope, not incidental: this first version covers
- * key-auth `openai-chat` only, and without an explicit check any generic key-auth adapter
+ * key-auth `openai-chat` and `openai-responses` passthrough providers, and without an explicit check any generic key-auth adapter
  * could opt in. Auth mode follows the same fail-closed rule as `rateLimitRetryPolicyFor` —
  * explicit `key` or the documented omitted default, never OAuth, forward, local, or an
  * unknown value.
@@ -316,7 +316,7 @@ export function transientRetryPolicyFor(
 ): Required<TransientRetryPolicy> | null {
   const policy = provider.transientRetryOn5xx;
   if (!policy || policy.enabled === false) return null;
-  if (provider.adapter !== "openai-chat") return null;
+  if (provider.adapter !== "openai-chat" && provider.adapter !== "openai-responses") return null;
   if (provider.authMode !== undefined && provider.authMode !== "key") return null;
   return {
     enabled: policy.enabled ?? DEFAULT_TRANSIENT_RETRY.enabled,

From 613153695e197224f3bafbb51c5f84eed9ad01ce Mon Sep 17 00:00:00 2001
From: Yum-wu <118118663+Yum-wu@users.noreply.github.com>
Date: Thu, 17 Sep 2026 18:57:55 +0800
Subject: [PATCH 2/3] test(retry): verify transient-5xx qualification for
 openai-responses

---
 tests/providers/upstream-transient-retry.test.ts | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/tests/providers/upstream-transient-retry.test.ts b/tests/providers/upstream-transient-retry.test.ts
index 313451d023..57851ac280 100644
--- a/tests/providers/upstream-transient-retry.test.ts
+++ b/tests/providers/upstream-transient-retry.test.ts
@@ -40,12 +40,16 @@ describe("transientRetryPolicyFor", () => {
     expect(transientRetryPolicyFor({ ...base, transientRetryOn5xx: { attempts: 5 } })).toEqual({ enabled: true, attempts: 5 });
   });
 
-  test("only key-auth openai-chat qualifies", () => {
+  test("only key-auth openai-chat and openai-responses qualify", () => {
     // The adapter gate is the accepted scope, not an incidental detail: without it any
     // generic key-auth provider would inherit the policy.
-    for (const adapter of ["openai-responses", "anthropic", "google"]) {
+    for (const adapter of ["anthropic", "google"]) {
       expect(transientRetryPolicyFor({ ...base, adapter, transientRetryOn5xx: {} } as unknown as OcxProviderConfig)).toBeNull();
     }
+    // openai-responses also qualifies
+    expect(transientRetryPolicyFor({ ...base, adapter: "openai-responses", transientRetryOn5xx: {} } as unknown as OcxProviderConfig))
+      .toEqual({ enabled: true, attempts: 3 });
+
     // Fail closed on credential shape: OAuth/forward/local are never replayed here.
     for (const authMode of ["oauth", "forward", "local"]) {
       expect(transientRetryPolicyFor({ ...base, authMode, transientRetryOn5xx: {} } as unknown as OcxProviderConfig)).toBeNull();
@@ -53,6 +57,8 @@ describe("transientRetryPolicyFor", () => {
     // An omitted authMode is the documented key-auth default for custom providers.
     expect(transientRetryPolicyFor({ adapter: "openai-chat", transientRetryOn5xx: {} } as unknown as OcxProviderConfig))
       .toEqual({ enabled: true, attempts: 3 });
+    expect(transientRetryPolicyFor({ adapter: "openai-responses", transientRetryOn5xx: {} } as unknown as OcxProviderConfig))
+      .toEqual({ enabled: true, attempts: 3 });
   });
 });
 

From 0173d3def369b48653e7ecf137a9a950a6fbc9bb Mon Sep 17 00:00:00 2001
From: Yum-wu <118118663+Yum-wu@users.noreply.github.com>
Date: Thu, 17 Sep 2026 19:05:20 +0800
Subject: [PATCH 3/3] chore: sync review readiness checklist state