diff --git a/web/src/lib/auth-api.ts b/web/src/lib/auth-api.ts
index 6ed518f..331111b 100644
--- a/web/src/lib/auth-api.ts
+++ b/web/src/lib/auth-api.ts
@@ -10,7 +10,7 @@ import { createAuthClient, type AuthClient } from '@bytelyst/auth-client';
 
 export const PRODUCT_ID = 'chronomind';
 
-function getBaseUrl(): string {
+export function getBaseUrl(): string {
   if (typeof window !== 'undefined' && (window as unknown as Record<string, unknown>).__PLATFORM_URL__) {
     return (window as unknown as Record<string, unknown>).__PLATFORM_URL__ as string;
   }
diff --git a/web/src/lib/auth-context.tsx b/web/src/lib/auth-context.tsx
index e9d6a00..25b1d8d 100644
--- a/web/src/lib/auth-context.tsx
+++ b/web/src/lib/auth-context.tsx
@@ -6,7 +6,7 @@
 
 import { createAuthProvider } from '@bytelyst/react-auth';
 import { setSyncEnabled } from './platform-sync';
-import { PRODUCT_ID, getAuthClient } from './auth-api';
+import { PRODUCT_ID, getAuthClient, getBaseUrl } from './auth-api';
 
 interface ChronoMindUser {
   id: string;
@@ -18,13 +18,6 @@ interface ChronoMindUser {
   [key: string]: unknown;
 }
 
-function getBaseUrl(): string {
-  if (typeof window !== 'undefined' && (window as unknown as Record<string, unknown>).__PLATFORM_URL__) {
-    return (window as unknown as Record<string, unknown>).__PLATFORM_URL__ as string;
-  }
-  return process.env.NEXT_PUBLIC_PLATFORM_SERVICE_URL ?? 'https://api.chronomind.app';
-}
-
 const { AuthProvider: _AuthProvider, useAuth: _useAuth } = createAuthProvider<ChronoMindUser>({
   baseUrl: getBaseUrl(),
   storagePrefix: 'chronomind',