3webs Visibility Engine
Most of these words are new enough that no two vendors use them the same way. These are the definitions the engine applies — not the industry consensus, because there is not one yet. Where a term is contested, we say so rather than assert ours is standard.
Each term is also published as machine-readable DefinedTerm markup on every page, so a system reading this site does not have to infer what we mean.
Answer Engine Optimization — structuring content so AI assistants extract it as a direct answer rather than a link.
Generative Engine Optimization — making a brand entity discoverable, resolvable and citable by generative AI systems.
AI Optimization — the full stack of signals determining how AI systems understand, rank and reproduce content.
AI Delivery Infrastructure — the machine-readable layer through which a company is discovered, understood and verified by AI systems and agents.
Agent-to-Agent — the open protocol by which autonomous agents discover each other's capabilities and invoke them, without a human in the loop.
A JSON document at /.well-known/agent-card.json describing an agent's identity, transport interfaces and callable skills.
A plain-text file at the site root declaring, for AI systems, what a site is and which resources matter.
The layer in which agents discover capabilities, verify evidence and execute tasks without a human click.
The layer read by answer engines and assistants: structured content, entities and declared meaning, rather than rendered pages.
The layer a person sees in a browser: pages, layout and navigation.
A published list of SHA-256 hashes for a site's own files, letting any third party verify that what is served matches what was signed.
A verdict for a signal that could not be tested from public sources. It is never counted as a failure, and the report states how many signals it applies to.
A single "AI-readiness score" hides the thing that matters: a site can be excellent for people, adequate for answer engines and completely invisible to agents, and one number averages that into meaninglessness. Splitting the score into three tells you which audience you are failing, which is the only version of the information you can act on.
The full signal list behind each web is published at the 167 signals.
It measures how a website presents itself to AI systems, answer engines and search crawlers. The engine fetches the page, robots.txt, sitemap.xml and the declared machine-readable signal files, then evaluates 167 signals across the human web, the AI web and the machine web.
No. Every score is produced by deterministic rules applied to evidence actually observed on the website. A language model writes only the short narrative summary. The same website in the same state always produces the same score.
Because a signal that cannot be verified from public sources has not failed — it simply could not be tested. Marking it as failed would invent a verdict. Every report states how many signals were actually tested.
SEO is the technical and content foundation used by search engines. AEO structures content so assistants extract direct answers. GEO makes the brand entity discoverable and citable by generative systems. AIO covers how AI systems understand, rank and reproduce content across the full stack.
No. The audit inspects only publicly served resources. Nothing is installed, no tracking code is added, no authentication is attempted, and no private area is accessed.
The first three reports per domain each calendar month are free. After that each report is EUR 19, excluding VAT. Monitoring one domain costs EUR 29 per month for a monthly interval, EUR 49 for weekly and EUR 99 for daily. API access is EUR 19 per call, with volume packs at EUR 12.90 and EUR 9.90 per call and an enterprise tier on request. Full pricing is published at 3webobs.com/pricing.
Yes. The engine implements the Agent-to-Agent protocol at /a2a, in versions 1.0 and 0.3, with an agent card at /.well-known/agent-card.json. A REST endpoint at /audit accepts a URL and returns the same report as JSON. Worked examples are published at 3webobs.com/agents.
No. Third-party AI systems change their behaviour without notice and no provider guarantees citation. The audit identifies observable technical signals within your control; it does not promise a ranking, a citation or a commercial outcome.
No. The report is a technical observation, not a certification and not a legal opinion. For a formal classification under Regulation (EU) 2024/1689, obtain independent legal analysis.
AIVENTURE S.R.L., a company registered in Bucharest, Romania, European Union, operating under the 5thElement.ai brand. Registration details and the full legal documentation are published on the site.