METRIC VAULT
Answer engine optimization

Answer engine optimization tool for AI Overviews and AI assistants

Score any page on the six signals that decide whether an answer engine can quote it, and get the fixes back in the order worth doing them.

robots.txt llms.txt 0 24 44 58 68 OF 100 WEIGHTED SIGNALS WEIGHT AI crawler access 20 Structured data 20 Clear answers 18 Heading structure 14 Question/FAQ format 14 Freshness and depth 14 FIX LIST, HEAVIEST FIRST PASS Heading structure 14 FIX Structured data 20 FIX Clear answers 18

What is answer engine optimization?

Answer engine optimization (AEO) is the work of getting your page used as the answer rather than as a link someone might click. The surfaces are Google's AI Overviews, featured snippets, voice answers and the assistants, and what they have in common is that they read a page, lift the part that answers the question, and present it on their own.

That changes what a page has to do. Ranking rewards a page that covers a topic thoroughly. Being quoted rewards a page an engine can take a clean, self-contained answer out of without rewriting it. A long guide can hold a good position and still be passed over, because the answer is buried four paragraphs into a section and nothing in it stands alone.

The practical work is unglamorous and mostly structural: let the crawler in, say the answer plainly near the question it answers, mark up what the page is, and give the engine headings it can use to find the right section. None of that is new advice. What is new is that it now decides whether you appear at all on a surface that never shows a second result.

AEO vs SEO vs GEO

Three acronyms, one goal, and a lot of noise about which replaces which. The short version is that they are layers rather than rivals, and they differ mainly in what counts as success:

Ranked SEO Quoted AEO Cited GEO
TermWhat success looks likeWhat it rewards
SEO The click. Measured in rankings and traffic Comprehensive pages, internal linking, relevance
AEO Being the answer, often with no click at all Concise, self-contained answers and question-shaped headings
GEO Being cited or paraphrased inside a generated answer Quotable, specific, clearly sourced writing

The useful takeaway for this page is narrow: one well-built page can satisfy all three, so AEO is rarely a separate project. It is a set of structural checks you run against pages you already have.

We have written the full comparison, including where each one pays off and how to build one workflow that serves all three, in GEO vs SEO vs AEO: What's the Difference?. If you are deciding where to spend effort rather than fixing a specific page, start there.

How the answer engine optimization tool scores a page

The check fetches the live page, its robots.txt and its llms.txt, then scores six signals. Each one passes or fails outright, the weights total 100, and the score is the sum of what passed. There is no partial credit and nothing is estimated.

SignalWeightWhat it checks
AI crawler access20Whether robots.txt lets Googlebot and Google-Extended in. Blocked here and the page is ineligible no matter how well it ranks
Structured data20JSON-LD saying what the page is. FAQ, HowTo and Article are the strongest eligibility signals
Clear answers18Whether a direct, self-contained answer sits near the top rather than being buried
Heading structure14One clear H1 and real H2 sections, so an engine can extract a section cleanly
Question/FAQ format14Question-shaped headings or valid FAQ schema, matching how people phrase queries
Freshness and depth14A recent update and roughly 300 or more words of real content

4 of 6 signals passing

Flip a signal and the score and the fix order recompute. Failures sort to the top, heaviest first, which is the order the real check reports them in.

The weights are the point. A page can fail one 14-point check and still be in good shape, but a failure on crawler access is not a deduction so much as a wall: nothing downstream matters while the engine is being turned away. The result lists the failures in weight order, so the first item is always the one worth fixing first.

Two things the score deliberately does not claim. It is a page-level readiness check, not a prediction: passing all six means an engine can quote the page, not that it will, because that also depends on competition and on how the question is asked. And it is a snapshot of one URL, so it says nothing about the rest of the site. If you want the site-wide view, or the same page watched over weeks, that is the tracking side of the product rather than this check.

Free AEO check

Paste any URL. This is the same check as the AI Overview Checker, running here on this page.

No account, no card and no credits. It reads the live page, its robots.txt and its llms.txt.

Frequently asked questions

What is an answer engine optimization tool?
An answer engine optimization tool checks whether a page is in a state that an answer engine can quote. It reads the page the way Google does when it builds an AI Overview: whether the crawler is allowed in, whether there is structured data describing what the page is, whether a direct answer sits near the top, and whether the headings let an engine lift one section cleanly. The output is a score out of 100 and a ranked list of what to change, weighted so you know which fix is worth making first.
How is the AEO score calculated?
Six signals, weighted to total 100. AI crawler access and structured data are worth 20 each, clear answers 18, and heading structure, question and FAQ format, and freshness and depth 14 each. A page either passes or fails each one, and the score is the sum of what it passed. The weights are visible next to every result, so a low score always says which signal cost the most rather than leaving you to guess.
Is AEO different from SEO?
They share a foundation and diverge on what counts as success. SEO wants the click, so it is measured in rankings and traffic. AEO often accepts a zero-click outcome, because being quoted as the answer is the win even when nobody visits. In practice the same work serves both: a page that is crawlable, well structured and answers its question plainly ranks well and gets quoted. We cover the distinction, and where GEO fits alongside them, in a separate guide.
Does the free AEO check need an account?
No. The check on this page runs without an account, a card or any credits, and it works signed out. Paste a URL and it reads the live page, its robots.txt and its llms.txt, then returns the score and the fixes. The tracking tools inside the app, which watch a set of pages or prompts over time rather than checking one URL now, are what the free plan and paid credits are for.
Can a page rank in Google and still fail an AEO check?
Yes, and it is common. Ranking rewards a comprehensive page, while being quoted rewards a page an engine can lift a clean answer out of. A long guide that buries its answer four paragraphs down can hold a good position and still be skipped by the AI Overview, because there is no self-contained sentence to quote. That is usually the gap the check reports on pages that are otherwise healthy.
What is answer engine optimization?
Answer engine optimization is the work of getting your page used as the source of a direct answer, rather than as one blue link among ten. The surfaces are Google AI Overviews and the AI assistants, and the unit of success is a citation, not a position.
Do you provide AEO services?
No. People searching for answer engine optimization services usually want someone to do the work, and it is worth saying plainly rather than burying it: Metric Vault is software. Nobody here will rewrite your pages, build schema for you or run outreach. What you get is the diagnosis: which pages an answer engine can and cannot cite, what is blocking each one, and what changed after you fixed it. Plenty of people take that output to an agency or a contractor, and it makes a far better brief than a blank document. If you want the work done for you, hire for the writing; use this to know whether it worked.
How is this different from other answer engine optimization tools?
Most answer engine optimization tools score a page against a checklist and stop there. That tells you whether the page looks optimised, not whether an engine actually cites it. This one does both halves: the page-level score and fix list, and then the live check of whether ChatGPT, Gemini, Perplexity, Claude or an AI Overview named you when a real question was asked. The second half is the one that tells you if the first half worked.

Track it across every page, not one at a time

No card required. The check above needs no account at all.