What we observe
We read robots.txt for Content-Signal lines (Cloudflare’s format) and Content-Usage lines (the IETF drafts on AI preferences), and the home page’s response for a Content-Usage header, and record what each one says.
Why it is here: the evidence
Fact only No platform document and no independent study says it matters. We record it because it is true of the site, so it is never offered as advice about AI.
Source: Cloudflare’s Content Signals and the IETF AIPREF drafts define these lines; no AI vendor documents acting on them. Source grade C: nothing published shows that AI systems use it.
Last re-checked ; due again within 30 days.
What we cannot see
Whether any AI system acts on these lines. No AI vendor documents doing so.
Why there is no advice here
Recorded as a fact; no platform documents that it matters to AI systems, so this page gives no advice about it.
- Layer
- Read: Can an AI crawler fetch your pages and understand what is on them?
- Level
- Not part of any level.
- How common it is
- Not published yet. We publish a share only once at least 30 sites stand behind it.
- Check id
fact:content-signal
Cite as: Invara, “How AI sees your site”, method version 1, check fact:content-signal. https://clearsitedigital.com/how-ai-sees-sites/fact-content-signal