Vax.Codes

Vax.Codes is a business whose own site puts it this way: "Vax.Codes is an easy, free way to verify someone has received a Covid-19 test or vaccine." To AI engines like ChatGPT and Perplexity, though, it is barely visible: it scores 4.0 out of 10.

On the page itself the strengths are clear: a clear heading structure. It is passable on a partly stated business identity and basic crawler access. What holds it back is sitemaps and entity links AI can follow, structured data describing the business and credibility markers like credentials or reviews.

Off the page there is only faint evidence that the domain is only lightly established and there is little discussion of it. Beyond that, almost no other sites link to it, AI engines do not yet recognise it as a distinct business, there is no press coverage to draw on and it does not come up on Reddit. Those are earned elsewhere on the web, not fixed on the site itself.

The site links to no social profiles, so there is nothing tying the brand to a wider presence.