Yes, you can check if a website is active in Clay using the "Check if URL is Valid" action. This tool verifies if a site is reachable and doesn’t return errors like 404. You can also use the APIVoid integration via HTTP API to see if a website is live, inactive, or redirected. Both options require you to input the website URL and will return a true/false status for validity or activity. [1] [2] [3]