Agent Web Index › science20.com

Can AI assistants read science20.com?

Measured on 2026-09-19 by asking the site 7 times — once as a browser, once as each of the 6 crawlers that feed ChatGPT, Claude, Perplexity, Gemini, Meta AI, Apple Intelligence and Doubao — and comparing what came back. The AI-training opt-out tokens that never crawl are read from robots.txt instead.

A85 / 100

5 of 6 crawlers can read this page.

More readable than 72% of the 47,315 sites measured so far. Structured data: Organization, WebSite.

What each crawler got back

Crawler	HTTP	Result	robots.txt
ClaudeBot (Claude)	200	can read it	allowed-by-star
GPTBot (ChatGPT)	200	can read it	allowed-by-star
OAI-SearchBot (ChatGPT Search)	200	can read it	allowed-by-star
PerplexityBot (Perplexity)	200	can read it	allowed-by-star
Google-Extended (Gemini, AI Overviews) a robots.txt token, not a crawler: it controls how already-crawled pages may be used, and never makes a request of its own	—	not opted out	allowed-by-star
Meta-ExternalAgent (Meta AI)	200	can read it	allowed-by-star
Amazonbot (Alexa, Rufus)	403	challenged	allowed-by-star

What to change, in order

Let in the 1 crawler your own robots.txt already allows+1 crawler
Amazonbot is turned away before reading the page (served a bot challenge instead of the page), while robots.txt permits it — so this block is not written in your site. No CDN signature was found in the response headers, so the refusal comes from the origin server itself or from a WAF this index does not recognise. Fixing it takes this domain from 5 to 6 of 6 crawlers.
Publish llms.txt
llms.txt is missing, so an assistant has to discover the site by following links. llms.txt is the emerging convention for telling an assistant which pages actually matter.

The checks

Answers AI agents like it answers people86%
Readable without JavaScript100%
robots.txt lets the crawlers in100%
Facts in JSON-LD84%
Content reachable, not buried70%
Publishes a map of itself45%
Plain structure98%

Re-run this audit live → Full AI-visibility report for science20.com →

Sites with a similar score

oxforddictionaries.comA 86 sciam.comA 85 scientificamerican.comA 85 scentos.inA 85 sdsu.eduA 85 safetyculture.comA 85 seranking.comA 85 quantummetric.comA 85 st-takla.orgA 85 madeiramadeira.com.brA 85 westerndigital.comA 85 shoezone.comB 84

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<a href="https://shop.lumnika.com/ai-readiness/science20.com"><img src="https://shop.lumnika.com/ai-readiness/science20.com/badge.svg" alt="AI readability"></a>

Method. 7 live HTTP requests (one per crawler, one as a browser) plus robots.txt, llms.txt, sitemap.xml and security.txt, 12-second timeout each, from a single vantage point. Blocking AI crawlers is a legitimate choice, not a failure: this page records what is true, not what should be. Domain comes from a shop-platform seed (Shopify/WooCommerce/Magento/BigCommerce/Shopline fingerprint or JSON-LD price), not the Tranco traffic ranking. One page per domain — the homepage — is audited.

Part of the Agent Web Index, 47,315 domains measured, updated continuously.