diff --git a/src/components/oauth/OAuthProviderButton.tsx b/src/components/oauth/OAuthProviderButton.tsx
index 4f9295afc..d98583674 100644
--- a/src/components/oauth/OAuthProviderButton.tsx
+++ b/src/components/oauth/OAuthProviderButton.tsx
@@ -2,6 +2,7 @@ import { useState } from 'react';
 import type { OAuthProviderConfig } from '../../types/oauth';
 import { openUrl } from '../../utils/openUrl';
 import { isTauri } from '../../utils/tauriCommands';
+import { IS_DEV } from '../../utils/config';
 
 interface OAuthProviderButtonProps {
   provider: OAuthProviderConfig;
@@ -20,6 +21,13 @@ const OAuthProviderButton = ({
     if (externalDisabled || isLoading) return;
 
     console.log(`Starting ${provider.name} OAuth login`, isTauri());
+
+    if (IS_DEV) {
+      console.log(`[dev] OAuth debug mode enabled. OAuth URL: ${provider.loginUrl}`);
+      console.log('[dev] In debug mode, OAuth will return JSON response instead of redirect.');
+      console.log('[dev] After OAuth completion, copy the loginToken and use: window.__simulateDeepLink("alphahuman://auth?token=YOUR_TOKEN")');
+    }
+
     setIsLoading(true);
 
     try {
diff --git a/src/components/oauth/providerConfigs.tsx b/src/components/oauth/providerConfigs.tsx
index e535f2153..6f4766f00 100644
--- a/src/components/oauth/providerConfigs.tsx
+++ b/src/components/oauth/providerConfigs.tsx
@@ -2,7 +2,7 @@
  * OAuth provider configurations with brand colors and icons
  */
 import type { OAuthProviderConfig } from '../../types/oauth';
-import { BACKEND_URL } from '../../utils/config';
+import { BACKEND_URL, IS_DEV } from '../../utils/config';
 
 // Provider Icons
 const GoogleIcon = ({ className = '' }: { className?: string }) => (
@@ -40,7 +40,7 @@ export const oauthProviderConfigs: OAuthProviderConfig[] = [
     color: 'bg-white border border-gray-200',
     hoverColor: 'hover:bg-gray-50 hover:border-gray-300',
     textColor: 'text-gray-900',
-    loginUrl: `${BACKEND_URL}/auth/google/login`,
+    loginUrl: `${BACKEND_URL}/auth/google/login${IS_DEV ? '?debug=true' : ''}`,
   },
   {
     id: 'github',
@@ -49,7 +49,7 @@ export const oauthProviderConfigs: OAuthProviderConfig[] = [
     color: 'bg-gray-900 border border-gray-800',
     hoverColor: 'hover:bg-gray-800 hover:border-gray-700',
     textColor: 'text-white',
-    loginUrl: `${BACKEND_URL}/auth/github/login`,
+    loginUrl: `${BACKEND_URL}/auth/github/login${IS_DEV ? '?debug=true' : ''}`,
   },
   {
     id: 'twitter',
@@ -58,7 +58,7 @@ export const oauthProviderConfigs: OAuthProviderConfig[] = [
     color: 'bg-black border border-gray-800',
     hoverColor: 'hover:bg-gray-900 hover:border-gray-700',
     textColor: 'text-white',
-    loginUrl: `${BACKEND_URL}/auth/twitter/login`,
+    loginUrl: `${BACKEND_URL}/auth/twitter/login${IS_DEV ? '?debug=true' : ''}`,
   },
   {
     id: 'discord',
@@ -67,7 +67,7 @@ export const oauthProviderConfigs: OAuthProviderConfig[] = [
     color: 'bg-indigo-600 border border-indigo-500',
     hoverColor: 'hover:bg-indigo-700 hover:border-indigo-600',
     textColor: 'text-white',
-    loginUrl: `${BACKEND_URL}/auth/discord/login`,
+    loginUrl: `${BACKEND_URL}/auth/discord/login${IS_DEV ? '?debug=true' : ''}`,
   },
 ];