{"message":"IP Info API with Monitoring","version":"2.0.0","endpoints":{"ip_info":"/ip (API key required)","bulk_ip_info":"/bulk-ip (API key required)","dashboard":"/dashboard","metrics":"/metrics","health":"/health"},"features":["Mandatory API key support via 'key' parameter","Real-time request monitoring","Concurrent request tracking","Performance metrics"],"note":"API key is now mandatory for IP lookup endpoints"}