diff --git a/.gemini/settings.json b/.gemini/settings.json
deleted file mode 100644
index c57a84a..0000000
--- a/.gemini/settings.json
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-  "mcpServers": {
-    "GitHubApprecio": {
-      "command": "npx",
-      "args": [
-        "-y",
-        "mcp-remote@0.1.15",
-        "https://mcp-github-323381129796.us-central1.run.app/sse",
-        "--transport",
-        "sse-only"
-      ]
-    }
-  }
-}
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 16801b8..6803d6c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,4 +24,5 @@ dist/
 coverage/
 comandos.txt
 debug/
+.gemini/
 
diff --git a/src/middleware/auth.ts b/src/middleware/auth.ts
index 66bc1b1..198dcc3 100644
--- a/src/middleware/auth.ts
+++ b/src/middleware/auth.ts
@@ -2,26 +2,30 @@ import { Request, Response, NextFunction } from 'express';
 import { config } from '#config/index';
 import { logger } from '#core/logger';
 
-export const authenticate = (req: Request, res: Response, next: NextFunction) => {
+
+export const authenticate = (req: Request, res: Response, next: NextFunction): void => {
     const authHeader = req.headers['authorization'];
     
     if (!authHeader) {
         logger.warn('Authentication failed: No Authorization header');
-        return res.status(401).json({ error: 'Authorization header required' });
+        res.status(401).json({ error: 'Authorization header required' });
+        return;
     }
 
     const tokenParts = authHeader.split(' ');
 
     if (tokenParts.length !== 2 || tokenParts[0].toLowerCase() !== 'bearer') {
         logger.warn('Authentication failed: Invalid token format');
-        return res.status(401).json({ error: 'Invalid token format. Expected "Bearer <token>"' });
+        res.status(401).json({ error: 'Invalid token format. Expected "Bearer <token>"' });
+        return;
     }
 
     const token = tokenParts[1];
 
     if (token !== config.apiKey) {
         logger.warn('Authentication failed: Invalid API key');
-        return res.status(401).json({ error: 'Invalid API key' });
+        res.status(401).json({ error: 'Invalid API key' });
+        return;
     }
 
     logger.info('Authentication successful');