Agent Web Index › viaf.org
Can AI assistants read viaf.org?
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.
D61 / 100
3 of 6 crawlers can read this page.
More readable than 20% of the 47,298 sites measured so far.
No JSON-LD.
What each crawler got back
| Crawler | HTTP | Result | robots.txt |
|---|---|---|---|
| ClaudeBot (Claude) | 403 | challenged | no-rule |
| GPTBot (ChatGPT) | 403 | challenged | no-rule |
| OAI-SearchBot (ChatGPT Search) | 200 | can read it | no-rule |
| PerplexityBot (Perplexity) | 200 | can read it | no-rule |
| 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-rule |
| Meta-ExternalAgent (Meta AI) | 200 | can read it | no-rule |
| Amazonbot (Alexa, Rufus) | 403 | challenged | no-rule |
Cloudflare answers for this domain. Where a crawler above is refused while robots.txt allows it, the rule is applied by that edge, not written by the site — see how often each edge does this.
The checks
- Answers AI agents like it answers people57%
- Readable without JavaScript100%
- robots.txt lets the crawlers in100%
- Facts in JSON-LD0%
- Content reachable, not buried94%
- Publishes a map of itself0%
- Plain structure40%
Sites with a similar score
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<a href="https://shop.lumnika.com/ai-readiness/viaf.org"><img src="https://shop.lumnika.com/ai-readiness/viaf.org/badge.svg" alt="AI readability"></a>
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, 47,298 domains measured, updated continuously.
Part of the Agent Web Index, 47,298 domains measured, updated continuously.