SEO check for clients

Hi all, I am wondering if someone knows how to integrate an SEO checker in their WordPress website.

To clear things up, I ama developing an agency website for consulting and I want to integrate a basic SEO checker where a front end user can enter a domain and it will give a basic/free SEO audit.

Front end user > website/seocheck > type in random domain > spit out basic SEO check

Is there a plugin for that or even a manual integration?