diff --git a/frontend/src/renderer/hooks/useAuth.js b/frontend/src/renderer/hooks/useAuth.js
new file mode 100644
index 0000000..b104cd2
--- /dev/null
+++ b/frontend/src/renderer/hooks/useAuth.js
@@ -0,0 +1,36 @@
+import { useState, useEffect } from 'react';
+
+export const useAuth = () => {
+  const [user, setUser] = useState(null);
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    const token = localStorage.getItem('token');
+    if (token) {
+      // Validate token and get user info
+      fetch('/api/auth/me', {
+        headers: { Authorization: `Bearer ${token}` }
+      })
+        .then(res => res.json())
+        .then(data => setUser(data.user))
+        .catch(() => localStorage.removeItem('token'))
+        .finally(() => setLoading(false));
+    } else {
+      setLoading(false);
+    }
+  }, []);
+
+  const login = (token, userInfo) => {
+    localStorage.setItem('token', token);
+    setUser(userInfo);
+  };
+
+  const logout = () => {
+    localStorage.removeItem('token');
+    setUser(null);
+  };
+
+  return { user, loading, login, logout };
+};
+
+export default useAuth;