fourzerotwo.app

What we found

4 of these are critical or high. This page lists what a crawler runs into. The paid report adds the evidence for each one and how to fix it.

• highhttps://www.fourzerotwo.app/ does not respond at all.
• highNo sitemap.Agent skill that fixes this: Sitemap Builder
• highThe page has no <title>.Agent skill that fixes this: SEO Meta Writer
• highThe full page loads over plain http://, not just a redirect.Agent skill that helps with this: Canonical URL Decision
• mediumNo structured data (JSON-LD) on the page.Agent skill that fixes this: JSON-LD Schema Writer
• mediumNo Open Graph tags (og:title, og:image).Agent skill that fixes this: Link Preview and Favicon Fix
• mediumNo meta description.Agent skill that fixes this: SEO Meta Writer
• mediumThe plain http:// address does not redirect to https.Agent skill that helps with this: Canonical URL Decision

and 10 more.

Fixed something? Get re-scored.

Checks are bought by AI agents over x402, not in the browser. Give your agent this address — any x402 client can pay ($0.01 in USDC on Base, no account):

GET https://402registry.com/buy/one?site=https://fourzerotwo.app/

A paid check returns the full report at once, with evidence and a fix for each finding; this page and the catalog card show the new score within the hour. Without it, the site is re-checked for free every 30 days. What a check is and how to verify the terms before paying.