diff --git a/extensions/google/google-genai-runtime.ts b/extensions/google/google-genai-runtime.ts
index 96875c183bb..b02a09c8beb 100644
--- a/extensions/google/google-genai-runtime.ts
+++ b/extensions/google/google-genai-runtime.ts
@@ -1,7 +1,7 @@
 import { GoogleGenAI } from "@google/genai";
 
 export type GoogleGenAIClient = InstanceType<typeof GoogleGenAI>;
-export type GoogleGenAIOptions = ConstructorParameters<typeof GoogleGenAI>[0];
+type GoogleGenAIOptions = ConstructorParameters<typeof GoogleGenAI>[0];
 
 export function createGoogleGenAI(options: GoogleGenAIOptions): GoogleGenAIClient {
   return new GoogleGenAI(options);
diff --git a/extensions/google/realtime-voice-provider.ts b/extensions/google/realtime-voice-provider.ts
index cc67a3535ce..4afed379c03 100644
--- a/extensions/google/realtime-voice-provider.ts
+++ b/extensions/google/realtime-voice-provider.ts
@@ -791,12 +791,3 @@ export function buildGoogleRealtimeVoiceProvider(): RealtimeVoiceProviderPlugin
     createBrowserSession: createGoogleRealtimeBrowserSession,
   };
 }
-
-export {
-  GOOGLE_REALTIME_DEFAULT_API_VERSION,
-  GOOGLE_REALTIME_DEFAULT_MODEL,
-  GOOGLE_REALTIME_DEFAULT_VOICE,
-  GOOGLE_REALTIME_BROWSER_API_VERSION,
-  GOOGLE_REALTIME_BROWSER_WEBSOCKET_URL,
-};
-export type { GoogleRealtimeVoiceProviderConfig };
diff --git a/extensions/xiaomi/speech-provider.ts b/extensions/xiaomi/speech-provider.ts
index 6f8abc3785f..d650c28af76 100644
--- a/extensions/xiaomi/speech-provider.ts
+++ b/extensions/xiaomi/speech-provider.ts
@@ -13,14 +13,14 @@ import {
   ssrfPolicyFromHttpBaseUrlAllowedHostname,
 } from "openclaw/plugin-sdk/ssrf-runtime";
 
-export const DEFAULT_XIAOMI_TTS_BASE_URL = "https://api.xiaomimimo.com/v1";
-export const DEFAULT_XIAOMI_TTS_MODEL = "mimo-v2.5-tts";
-export const DEFAULT_XIAOMI_TTS_VOICE = "mimo_default";
-export const DEFAULT_XIAOMI_TTS_FORMAT = "mp3";
+const DEFAULT_XIAOMI_TTS_BASE_URL = "https://api.xiaomimimo.com/v1";
+const DEFAULT_XIAOMI_TTS_MODEL = "mimo-v2.5-tts";
+const DEFAULT_XIAOMI_TTS_VOICE = "mimo_default";
+const DEFAULT_XIAOMI_TTS_FORMAT = "mp3";
 
-export const XIAOMI_TTS_MODELS = ["mimo-v2.5-tts", "mimo-v2-tts"] as const;
+const XIAOMI_TTS_MODELS = ["mimo-v2.5-tts", "mimo-v2-tts"] as const;
 
-export const XIAOMI_TTS_VOICES = [
+const XIAOMI_TTS_VOICES = [
   "mimo_default",
   "default_zh",
   "default_en",
@@ -194,7 +194,7 @@ function decodeXiaomiAudioData(body: unknown): Buffer {
   return Buffer.from(audioData, "base64");
 }
 
-export async function xiaomiTTS(params: {
+async function xiaomiTTS(params: {
   text: string;
   apiKey: string;
   baseUrl: string;