diff --git a/.env b/.env
index b651f5b..0be06ff 100644
--- a/.env
+++ b/.env
@@ -22,6 +22,8 @@ PROBE_FAILRATE=30
 PROBE_INTERVAL_SECONDS=60
 API_BASE_URL=https://selfservice.cqers.com/drones/api
 
+API_DEBUG=true
+
 # Optional: Override default settings
 # NODE_ENV=production
 # CORS_ORIGIN=http://localhost:3000
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..67ff557
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,59 @@
+# Dependencies
+node_modules/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Production build
+dist/
+build/
+
+# Environment variables
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+# Logs
+logs/
+*.log
+
+# Debug files
+api_debug.log
+debug.log
+requests.log
+responses.log
+
+# IDE files
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# OS files
+.DS_Store
+Thumbs.db
+
+# Database
+*.sqlite
+*.db
+
+# Docker
+.dockerignore
+
+# Python
+__pycache__/
+*.pyc
+*.pyo
+*.pyd
+.Python
+env/
+venv/
+.venv/
+pip-log.txt
+
+# Temporary files
+tmp/
+temp/
+*.tmp
+*.temp
diff --git a/server/utils/apiDebugLogger.js b/server/utils/apiDebugLogger.js
new file mode 100644
index 0000000..81898eb
--- /dev/null
+++ b/server/utils/apiDebugLogger.js
@@ -0,0 +1,132 @@
+const fs = require('fs');
+const path = require('path');
+
+class ApiDebugLogger {
+  constructor() {
+    this.logFile = path.join(__dirname, '..', 'api_debug.log');
+    this.enabled = process.env.NODE_ENV === 'development' || process.env.API_DEBUG === 'true';
+  }
+
+  log(method, url, statusCode, requestBody = {}, responseBody = {}, headers = {}) {
+    if (!this.enabled) return;
+
+    const timestamp = new Date().toISOString();
+    const sanitizedRequest = this.sanitizeData(requestBody);
+    const sanitizedResponse = this.sanitizeData(responseBody);
+    const sanitizedHeaders = this.sanitizeHeaders(headers);
+
+    const logEntry = [
+      `[${timestamp}]`,
+      method.toUpperCase(),
+      url,
+      `-`,
+      `STATUS:${statusCode}`,
+      `-`,
+      `REQ:${JSON.stringify(sanitizedRequest)}`,
+      `-`,
+      `RES:${JSON.stringify(sanitizedResponse)}`,
+      `-`,
+      `HEADERS:${JSON.stringify(sanitizedHeaders)}`
+    ].join(' ');
+
+    try {
+      fs.appendFileSync(this.logFile, logEntry + '\n');
+    } catch (error) {
+      console.error('Failed to write to API debug log:', error);
+    }
+  }
+
+  sanitizeData(data) {
+    if (!data || typeof data !== 'object') return data;
+
+    const sanitized = { ...data };
+    
+    // Remove sensitive fields
+    const sensitiveFields = ['password', 'token', 'secret', 'key', 'auth', 'authorization'];
+    
+    sensitiveFields.forEach(field => {
+      if (sanitized[field]) {
+        sanitized[field] = '***REDACTED***';
+      }
+    });
+
+    return sanitized;
+  }
+
+  sanitizeHeaders(headers) {
+    if (!headers || typeof headers !== 'object') return {};
+
+    const sanitized = { ...headers };
+    
+    // Remove sensitive headers
+    const sensitiveHeaders = ['authorization', 'cookie', 'x-api-key', 'x-auth-token'];
+    
+    sensitiveHeaders.forEach(header => {
+      if (sanitized[header]) {
+        sanitized[header] = '***REDACTED***';
+      }
+    });
+
+    return sanitized;
+  }
+
+  logRequest(req) {
+    if (!this.enabled) return;
+
+    const timestamp = new Date().toISOString();
+    const logEntry = `[${timestamp}] INCOMING ${req.method} ${req.url} - BODY:${JSON.stringify(this.sanitizeData(req.body))} - HEADERS:${JSON.stringify(this.sanitizeHeaders(req.headers))}`;
+    
+    try {
+      fs.appendFileSync(this.logFile, logEntry + '\n');
+    } catch (error) {
+      console.error('Failed to write request to API debug log:', error);
+    }
+  }
+
+  logResponse(req, res, responseBody) {
+    if (!this.enabled) return;
+
+    this.log(
+      req.method,
+      req.url,
+      res.statusCode,
+      req.body,
+      responseBody,
+      {
+        'content-type': res.getHeader('content-type'),
+        'user-agent': req.headers['user-agent']
+      }
+    );
+  }
+
+  clear() {
+    try {
+      fs.writeFileSync(this.logFile, '# API Debug Log Cleared at ' + new Date().toISOString() + '\n');
+      console.log('API debug log cleared');
+    } catch (error) {
+      console.error('Failed to clear API debug log:', error);
+    }
+  }
+}
+
+// Middleware function for Express
+function apiDebugMiddleware(req, res, next) {
+  const logger = new ApiDebugLogger();
+  
+  // Log incoming request
+  logger.logRequest(req);
+  
+  // Override res.json to capture response
+  const originalJson = res.json;
+  res.json = function(data) {
+    logger.logResponse(req, res, data);
+    return originalJson.call(this, data);
+  };
+  
+  next();
+}
+
+module.exports = {
+  ApiDebugLogger,
+  apiDebugMiddleware
+};