diff --git a/extensions/openai/base-url.ts b/extensions/openai/base-url.ts
new file mode 100644
index 00000000000..3806d82be29
--- /dev/null
+++ b/extensions/openai/base-url.ts
@@ -0,0 +1,17 @@
+import { normalizeOptionalString } from "openclaw/plugin-sdk/text-runtime";
+
+export function isOpenAIApiBaseUrl(baseUrl?: string): boolean {
+  const trimmed = normalizeOptionalString(baseUrl);
+  if (!trimmed) {
+    return false;
+  }
+  return /^https?:\/\/api\.openai\.com(?:\/v1)?\/?$/i.test(trimmed);
+}
+
+export function isOpenAICodexBaseUrl(baseUrl?: string): boolean {
+  const trimmed = normalizeOptionalString(baseUrl);
+  if (!trimmed) {
+    return false;
+  }
+  return /^https?:\/\/chatgpt\.com\/backend-api\/?$/i.test(trimmed);
+}
diff --git a/extensions/openai/shared.ts b/extensions/openai/shared.ts
index cfc36cb1a95..a6ce47eaef1 100644
--- a/extensions/openai/shared.ts
+++ b/extensions/openai/shared.ts
@@ -7,6 +7,7 @@ import {
 } from "openclaw/plugin-sdk/provider-model-shared";
 import { OPENAI_RESPONSES_STREAM_HOOKS } from "openclaw/plugin-sdk/provider-stream-family";
 import { normalizeOptionalString } from "openclaw/plugin-sdk/text-runtime";
+import { isOpenAIApiBaseUrl, isOpenAICodexBaseUrl } from "./base-url.js";
 import { buildOpenAIReplayPolicy } from "./replay-policy.js";
 import {
   resolveOpenAITransportTurnState,
@@ -41,22 +42,6 @@ export function resolveConfiguredOpenAIBaseUrl(cfg: OpenClawConfig | undefined):
   return normalizeOptionalString(cfg?.models?.providers?.openai?.baseUrl) ?? OPENAI_API_BASE_URL;
 }
 
-export function isOpenAIApiBaseUrl(baseUrl?: string): boolean {
-  const trimmed = normalizeOptionalString(baseUrl);
-  if (!trimmed) {
-    return false;
-  }
-  return /^https?:\/\/api\.openai\.com(?:\/v1)?\/?$/i.test(trimmed);
-}
-
-export function isOpenAICodexBaseUrl(baseUrl?: string): boolean {
-  const trimmed = normalizeOptionalString(baseUrl);
-  if (!trimmed) {
-    return false;
-  }
-  return /^https?:\/\/chatgpt\.com\/backend-api\/?$/i.test(trimmed);
-}
-
 function hasSupportedOpenAIResponsesTransport(
   transport: unknown,
 ): transport is "auto" | "sse" | "websocket" {
@@ -136,4 +121,10 @@ export function buildOpenAISyntheticCatalogEntry(
   };
 }
 
-export { cloneFirstTemplateModel, findCatalogTemplate, matchesExactOrPrefix };
+export {
+  cloneFirstTemplateModel,
+  findCatalogTemplate,
+  isOpenAIApiBaseUrl,
+  isOpenAICodexBaseUrl,
+  matchesExactOrPrefix,
+};
diff --git a/extensions/openai/transport-policy.ts b/extensions/openai/transport-policy.ts
index e3f20b151f5..cd69858ee77 100644
--- a/extensions/openai/transport-policy.ts
+++ b/extensions/openai/transport-policy.ts
@@ -6,7 +6,7 @@ import type {
 } from "openclaw/plugin-sdk/plugin-entry";
 import { normalizeProviderId } from "openclaw/plugin-sdk/provider-model-shared";
 import { normalizeLowercaseStringOrEmpty } from "openclaw/plugin-sdk/text-runtime";
-import { isOpenAIApiBaseUrl, isOpenAICodexBaseUrl } from "./shared.js";
+import { isOpenAIApiBaseUrl, isOpenAICodexBaseUrl } from "./base-url.js";
 
 const DEFAULT_OPENAI_WS_DEGRADE_COOLDOWN_MS = 60_000;
 const AZURE_PROVIDER_IDS = new Set(["azure-openai", "azure-openai-responses"]);