What we found
1 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.
- highThe page has no <title>.
- mediumNo structured data (JSON-LD) on the page.
- mediumNo Open Graph tags (og:title, og:image).
- mediumNo meta description.
- mediumNo max-image-preview:large in the robots meta tag.
- mediumThe HTML document is 293 KB.
- mediumNo viewport meta tag.
- lowNo lang attribute on <html>.
and 6 more.
Need a fresh check?
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://underground.substratesymposium.com/
It answers 402 with the payment terms; after paying, the agent gets the full report with evidence and a fix for each finding. What a check is and how to verify the terms before paying.
Site overview
- Host
- underground.substratesymposium.com
- Category
- api
- Topic
- ai-and-agents
- Score
- 59/100
- Date
- checked 2026-11-04
Verify this
The badge below is generated from the same record and updates when the site is re-checked.
Anyone can read the record without paying: https://402registry.com/api/check?url=https://underground.substratesymposium.com/
To show it on the site, paste this:
<a href="https://402registry.com/site/underground.substratesymposium.com"><img src="https://402registry.com/badge/underground.substratesymposium.com.svg" alt="402registry: underground.substratesymposium.com" height="20"></a>