Glossary

Glossary

One sentence first, then why it matters and how to see it on your own site. Where a term is one of the 23 checks, the page says so and links to the check.

By Reflexa Technologies — the team building Reflexa, the agent that works on your site · updated 16 October 2026
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Generative Engine Optimization (GEO)

Generative Engine Optimization is the practice of making a website readable, trustworthy and quotable to AI answer engines — ChatGPT, Claude…

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AI visibility

AI visibility is whether and how an AI assistant names, recommends and cites a company when someone asks it a question the company should be…

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AI crawler

An AI crawler is the bot an AI company sends to fetch web pages — to train a model (GPTBot, ClaudeBot), to build a search index (OAI-SearchB…

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Training crawler vs retrieval crawler

A training crawler collects pages to train a model; a retrieval crawler fetches pages to answer a question now…

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robots.txt

robots.txt is the plain-text file at the root of a site that tells crawlers, by user-agent, which paths they may fetch.

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User-agent

A user-agent is the string a client sends to identify itself — a browser version, or a crawler's name such as GPTBot/1.2 — and the token rob…

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Bot verification

Bot verification is confirming that a request claiming to be a crawler really came from its vendor — by checking the source IP against the v…

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llms.txt

llms.txt is a proposed plain-text file at /llms.txt that gives language models a short description of a site and a curated list of its impor…

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Sitemap

A sitemap is an XML file, usually at /sitemap.xml, listing every page a site wants crawled with the date each last changed.

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noindex

noindex is a directive — a meta tag or an X-Robots-Tag header — that tells search engines not to index a page even though they may fetch it.

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Canonical URL

The canonical URL is the one address a page declares as its true copy, in `<link rel="canonical">`, so that duplicates (www and non-www, tra…

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Internal links

Internal links are links from one page of a site to another — the paths crawlers follow to discover pages and the signal of which pages belo…

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Server-side rendering (SSR)

Server-side rendering means the server sends the page's HTML with the content already in it, rather than an empty shell that JavaScript fill…

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Raw HTML

Raw HTML is the document exactly as the server sends it, before any JavaScript runs — what a fetcher that does not render sees.

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Time to first byte (TTFB)

Time to first byte is how long a server takes to start answering a request — the delay before the first byte of the page arrives.

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JSON-LD

JSON-LD is the format for structured data on a web page: a script block of type application/ld+json carrying schema.org entities — Organizat…

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schema.org

schema.org is the shared vocabulary of types and properties — Organization, Person, Product, FAQPage and hundreds more — that structured dat…

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Entity

An entity, in GEO terms, is the single identity an engine holds for your business — one organization with one name, one website and a set of…

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sameAs

sameAs is the schema.org property that lists other web pages about the same entity — the organization's LinkedIn, Wikidata item, Wikipedia a…

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@id

@id is the identifier of an entity in JSON-LD — a URL-shaped string such as https://yourdomain/#org — so that the same entity can be referen…

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Knowledge graph

A knowledge graph is a store of entities and the relationships between them — a company, its founders, its products, its website — that engi…

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Wikidata

Wikidata is the free, structured knowledge base behind Wikipedia — an item per entity with properties such as official website, country and …

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Answer-first writing

Answer-first writing states the direct answer to a section's question in its first sentence, before context, story or setup.

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Chunking and passage retrieval

Chunking is how retrieval systems split a page into passages, and passage retrieval is how they pick a few of those passages — not the whole…

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Self-contained section

A self-contained section names its subject and states its answer inside itself, so it makes sense when retrieved without the rest of the pag…

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Citation, mention and recommendation

A mention is your name appearing in an AI answer; a recommendation is the answer suggesting you for the question asked; a citation is the an…

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Grounding

Grounding is an AI engine basing its answer on retrieved documents — pages fetched at answer time — rather than only on what the model learn…

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Share of voice in AI answers

Share of voice in AI answers is the share of answers to a set of buyer questions in which a brand is named, compared with the other brands n…

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Buyer question

A buyer question is the actual question a prospective customer asks an AI assistant before choosing — "best X for Y", "alternatives to Z", "…

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Google AI Overviews and AI Mode

AI Overviews are the generated summaries at the top of Google results; AI Mode is Google's conversational search…

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Page check (Reflexa)

A page check is Reflexa's structural read of a site: the public pages fetched from outside and run through 23 checks — crawler access, page …

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The Reflexa agent

The Reflexa agent is a small piece of software installed on a website — a middleware file on a coded site, a plugin on WordPress — bound to …

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Domain proof

Domain proof is how Reflexa confirms that an agent is running on the domain its token belongs to: the agent serves a phrase at /.well-known/…

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