GEO Authority Score (GAS): evidence-led readiness | SEO-GEO
GAS is not another black-box number. Every point traces to a concrete fact in robots.txt, llms.txt, the sitemap or the homepage HTML.
Scoring fetches four public resources: homepage HTML, robots.txt, llms.txt and sitemap.xml. Every check is regex or structural parsing, never model inference, so the same domain at the same moment reproduces the same score for anyone.
What can you check or produce?
- A 0-100 GEO Authority Score with six grade bands from A+ to D
- Weighted dimensions: machine access 18% / structured data 20% / entity consistency 17% / answer extractability 18% / freshness and depth 15% / citation signals 12%
- Pass-fail detail for every check, plus a fix list ranked by dimension weight
- Industry leaderboard of scored domains
- A copyable badge snippet to publish your score on your own site
- Deterministic fetch-based checks — no LLM calls
How should you interpret results and choose the next action?
Scoring fetches four public resources: homepage HTML, robots.txt, llms.txt and sitemap.xml. Every check is regex or structural parsing, never model inference, so the same domain at the same moment reproduces the same score for anyone. GAS measures structural readiness to be consumed by generative engines — not a guarantee of being cited. It is a readiness score, not a measured citation rate, and we make no causal claim between it and rankings. Multi-engine sampling is a separate verification layer. Verified domains are labelled on the board and shown alongside, never blended into, the deterministic score. Algorithm changes bump the version and retain historical scores.
Frequently asked questions
Will the score move?
Yes. Changes to robots.txt, schema or sitemap lastmod shift it — that is the point of a health metric. The algorithm itself never changes silently.
Does a high score guarantee AI citations?
No. GAS is a readiness score: it measures whether the barriers to consumption are cleared, not the citation outcome.
Do I need an account?
Scoring and the leaderboard are free without signing in. Signed-in users get full per-check detail and can pipe results into other modules.
By the 23SEOGEO team · Last updated: