diff --git a/extensions/elevenlabs/speech-provider.ts b/extensions/elevenlabs/speech-provider.ts
index f1fa61b2428..76d365d32a1 100644
--- a/extensions/elevenlabs/speech-provider.ts
+++ b/extensions/elevenlabs/speech-provider.ts
@@ -294,7 +294,7 @@ function parseDirectiveToken(ctx: SpeechDirectiveTokenParseContext) {
   }
 }
 
-export async function listElevenLabsVoices(params: {
+async function listElevenLabsVoices(params: {
   apiKey: string;
   baseUrl?: string;
 }): Promise<SpeechVoiceOption[]> {
diff --git a/extensions/microsoft-foundry/cli.ts b/extensions/microsoft-foundry/cli.ts
index e14c54e4788..c5e2a967841 100644
--- a/extensions/microsoft-foundry/cli.ts
+++ b/extensions/microsoft-foundry/cli.ts
@@ -53,7 +53,7 @@ export function execAz(args: string[]): string {
   );
 }
 
-export async function execAzAsync(args: string[]): Promise<string> {
+async function execAzAsync(args: string[]): Promise<string> {
   return await new Promise<string>((resolve, reject) => {
     execFile(
       "az",
diff --git a/extensions/microsoft-foundry/onboard.ts b/extensions/microsoft-foundry/onboard.ts
index 6a519d7f0d3..253703224b2 100644
--- a/extensions/microsoft-foundry/onboard.ts
+++ b/extensions/microsoft-foundry/onboard.ts
@@ -30,7 +30,7 @@ import {
 
 export { listSubscriptions } from "./cli.js";
 
-export function listFoundryResources(subscriptionId?: string): FoundryResourceOption[] {
+function listFoundryResources(subscriptionId?: string): FoundryResourceOption[] {
   try {
     const accounts = JSON.parse(
       execAz([
@@ -121,7 +121,7 @@ export function listResourceDeployments(
   }
 }
 
-export function buildCreateFoundryHint(selectedSub: AzAccount): string {
+function buildCreateFoundryHint(selectedSub: AzAccount): string {
   return [
     `No Azure AI Foundry or Azure OpenAI resources were found in subscription ${selectedSub.name} (${selectedSub.id}).`,
     "Create one in Azure AI Foundry or Azure Portal, then rerun onboard.",
@@ -341,9 +341,7 @@ export function buildFoundryConnectionTest(params: {
   };
 }
 
-export function extractTenantSuggestions(
-  rawMessage: string,
-): Array<{ id: string; label?: string }> {
+function extractTenantSuggestions(rawMessage: string): Array<{ id: string; label?: string }> {
   const suggestions: Array<{ id: string; label?: string }> = [];
   const seen = new Set<string>();
   const regex = /([0-9a-fA-F-]{36})(?:\s+'([^'\r\n]+)')?/g;
diff --git a/extensions/microsoft-foundry/shared.ts b/extensions/microsoft-foundry/shared.ts
index 57838b3a2d2..81febe723e7 100644
--- a/extensions/microsoft-foundry/shared.ts
+++ b/extensions/microsoft-foundry/shared.ts
@@ -114,7 +114,7 @@ type FoundryConfigShape = {
   };
 };
 
-export function normalizeFoundryModelName(value?: string | null): string | undefined {
+function normalizeFoundryModelName(value?: string | null): string | undefined {
   const trimmed = normalizeLowercaseStringOrEmpty(value);
   return trimmed || undefined;
 }
@@ -181,7 +181,7 @@ export function normalizeFoundryEndpoint(endpoint: string): string {
   }
 }
 
-export function buildFoundryV1BaseUrl(endpoint: string): string {
+function buildFoundryV1BaseUrl(endpoint: string): string {
   const base = normalizeFoundryEndpoint(endpoint);
   return base.endsWith("/openai/v1") ? base : `${base}/openai/v1`;
 }
@@ -218,7 +218,7 @@ export function extractFoundryEndpoint(baseUrl: string | null | undefined): stri
   }
 }
 
-export function buildFoundryModelCompat(
+function buildFoundryModelCompat(
   modelId: string,
   modelNameHint?: string | null,
   configuredApi?: ModelApi | null,
@@ -267,7 +267,7 @@ export function resolveConfiguredModelNameHint(
   return trimmedId ? trimmedId : undefined;
 }
 
-export function buildFoundryProviderConfig(
+function buildFoundryProviderConfig(
   endpoint: string,
   modelId: string,
   modelNameHint?: string | null,