diff --git a/api/server.ts b/api/server.ts
index bb13831..8ed20ba 100644
--- a/api/server.ts
+++ b/api/server.ts
@@ -22,7 +22,7 @@ app.use(cors({
 app.use(express.json())
 
 // Health check
-app.get('/api/health', (req, res) => {
+app.get('/api/health', (_req, res) => {
   res.json({ status: 'ok', timestamp: new Date().toISOString() })
 })
 
@@ -34,7 +34,7 @@ app.use('/api/hetzner', hetznerRouter)
 app.use('/api/wp-monitor', wpMonitorRouter)
 
 // Error handling
-app.use((err: any, req: express.Request, res: express.Response, next: express.NextFunction) => {
+app.use((err: any, _req: express.Request, res: express.Response, _next: express.NextFunction) => {
   console.error('Server error:', err)
   res.status(500).json({ error: 'Internal server error' })
 })
diff --git a/api/services/hetzner.ts b/api/services/hetzner.ts
index 81e428c..a879bdb 100644
--- a/api/services/hetzner.ts
+++ b/api/services/hetzner.ts
@@ -64,7 +64,7 @@ async function hetznerRequest<T>(endpoint: string): Promise<T> {
     throw new Error(`Hetzner API error: ${response.status} ${response.statusText}`)
   }
 
-  return response.json()
+  return response.json() as Promise<T>
 }
 
 // Sincronizar lista de servidores
diff --git a/api/services/monitoring.ts b/api/services/monitoring.ts
index e6fc2ea..8158b47 100644
--- a/api/services/monitoring.ts
+++ b/api/services/monitoring.ts
@@ -143,11 +143,11 @@ export async function getMonitoringData() {
     GROUP BY category
   `)
 
-  // Parse details JSON
-  const itemsParsed = items.map(item => ({
+  // Parse details JSON and cast to MonitoringItem
+  const itemsParsed: MonitoringItem[] = items.map(item => ({
     ...item,
     details: typeof item.details === 'string' ? JSON.parse(item.details) : item.details
-  }))
+  } as MonitoringItem))
 
   // Organize by category
   const data: Record<string, MonitoringItem[]> = {}