Ensuring Website Accessibility for Accurate Company Descriptions

I have a Claygent prompt that writes an in-depth description about the company based on their website. However, the prompt still pulls information even if the website is inaccessible (404 error, DNS won't connect, etc). Which is fine if the company still exists. The issue I run into is that I get replies that say "this website doesn't even exist anymore" or "I shut down that business a million years ago" sort of thing. How would you go about checking to make sure the website actually... ya know... works...? 😅