diff --git a/dashboard/src/lib/api.ts b/dashboard/src/lib/api.ts
index e999345..ad2e4af 100644
--- a/dashboard/src/lib/api.ts
+++ b/dashboard/src/lib/api.ts
@@ -1,3 +1,5 @@
+import { getToken, removeToken } from './auth';
+
 const API_URL = process.env.NEXT_PUBLIC_API_URL || '';
 
 class ApiClient {
@@ -7,6 +9,31 @@ class ApiClient {
     this.baseUrl = baseUrl;
   }
 
+  private getHeaders(): Record<string, string> {
+    const headers: Record<string, string> = {
+      'Content-Type': 'application/json',
+    };
+    const token = typeof window !== 'undefined' ? getToken() : null;
+    if (token) {
+      headers['Authorization'] = `Bearer ${token}`;
+    }
+    return headers;
+  }
+
+  private async handleResponse(response: Response): Promise<any> {
+    if (response.status === 401) {
+      removeToken();
+      if (typeof window !== 'undefined') {
+        window.location.href = '/login';
+      }
+      throw new Error('Unauthorized');
+    }
+    if (!response.ok) {
+      throw new Error(`API error: ${response.status}`);
+    }
+    return response.json();
+  }
+
   async get(path: string, params?: Record<string, any>): Promise<any> {
     const url = new URL(path, this.baseUrl || window.location.origin);
     if (params) {
@@ -16,71 +43,37 @@ class ApiClient {
         }
       });
     }
-
-    const response = await fetch(url.toString(), {
-      headers: {
-        'Content-Type': 'application/json',
-      },
-    });
-
-    if (!response.ok) {
-      throw new Error(`API error: ${response.status}`);
-    }
-
-    return response.json();
+    const response = await fetch(url.toString(), { headers: this.getHeaders() });
+    return this.handleResponse(response);
   }
 
   async post(path: string, data: any): Promise<any> {
     const url = new URL(path, this.baseUrl || window.location.origin);
-
     const response = await fetch(url.toString(), {
       method: 'POST',
-      headers: {
-        'Content-Type': 'application/json',
-      },
+      headers: this.getHeaders(),
       body: JSON.stringify(data),
     });
-
-    if (!response.ok) {
-      throw new Error(`API error: ${response.status}`);
-    }
-
-    return response.json();
+    return this.handleResponse(response);
   }
 
   async put(path: string, data?: any): Promise<any> {
     const url = new URL(path, this.baseUrl || window.location.origin);
-
     const response = await fetch(url.toString(), {
       method: 'PUT',
-      headers: {
-        'Content-Type': 'application/json',
-      },
+      headers: this.getHeaders(),
       body: data ? JSON.stringify(data) : undefined,
     });
-
-    if (!response.ok) {
-      throw new Error(`API error: ${response.status}`);
-    }
-
-    return response.json();
+    return this.handleResponse(response);
   }
 
   async delete(path: string): Promise<any> {
     const url = new URL(path, this.baseUrl || window.location.origin);
-
     const response = await fetch(url.toString(), {
       method: 'DELETE',
-      headers: {
-        'Content-Type': 'application/json',
-      },
+      headers: this.getHeaders(),
     });
-
-    if (!response.ok) {
-      throw new Error(`API error: ${response.status}`);
-    }
-
-    return response.json();
+    return this.handleResponse(response);
   }
 }