Agent Web Index › coreserver.jp

Can AI assistants read coreserver.jp?

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.

C69 / 100

6 of 6 crawlers can read this page.

More readable than 34% of the 46,988 sites measured so far. No JSON-LD.

What each crawler got back

Crawler	HTTP	Result	robots.txt
ClaudeBot (Claude)	200	can read it	no-file
GPTBot (ChatGPT)	200	can read it	no-file
OAI-SearchBot (ChatGPT Search)	200	can read it	no-file
PerplexityBot (Perplexity)	200	can read it	no-file
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	no-file
Meta-ExternalAgent (Meta AI)	200	can read it	no-file
Amazonbot (Alexa, Rufus)	200	can read it	no-file

The checks

Answers AI agents like it answers people100%
Readable without JavaScript100%
robots.txt lets the crawlers in100%
Facts in JSON-LD0%
Content reachable, not buried3%
Publishes a map of itself45%
Plain structure75%

Re-run this audit live → Full AI-visibility report for coreserver.jp →

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Method. Six live HTTP requests 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, 46,988 domains measured, updated continuously.