Get found. Get cited.
Get chosen — by the agents that act.
Seryvon is the only open-source audit that scores your site across all five layers of modern discovery — SEO, GEO, GSO, AEO and ASO — with transparent, deterministic, fully traceable math.
The tools you trust are blind to the new game.
In 2026, AI agent traffic to e-commerce sites grew by several hundred percent in a single year. Autonomous agents now book, compare, select and purchase — without ever asking a human to click. Ahrefs tracks your Domain Rating. Semrush monitors your keyword rankings. Neither can tell you whether ChatGPT cites you, whether Perplexity recommends you — or whether an autonomous agent can find, parse and choose you.
That gap has a name: Signal clarity. The information overload of the AI era makes it harder for the right signal to reach the right decision-maker — human or machine. Seryvon is the audit built to close that gap.
Ahrefs, Semrush and Moz charge $100–500+/month per seat and deliver scores you cannot audit, reproduce or customize — Domain Rating, Authority Score. Pure black boxes.
GEO and AEO are afterthoughts in commercial tools — added late to premium tiers, methodology proprietary, scores not reproducible across runs.
No commercial tool audits agentic readiness. Whether a shopping agent or booking agent can discover and choose you is simply unmeasured — anywhere, by anyone else.
SEO got you ranked. GEO gets you cited. ASO gets you chosen by the agents that act.
Humans type queries. Engines rank pages. Winning meant high positions, fast load times, clean metadata and authority links.
AI models answer queries by synthesising the web. Winning means being the source a model quotes — entity clarity, E-E-A-T, structured Q&A.
Autonomous agents compare, book, buy and select on behalf of users. Winning means exposing machine-readable actions, MCP endpoints and a coherent cross-surface identity.
Every layer of modern discovery, measured and unified.
One deterministic engine scores all five pillars and rolls them into a single weighted, fully traceable result. Every criterion links to a measured value.
Classic organic compliance — crawlability, metadata, Core Web Vitals, maillage interne, authority. 28 criteria measured.
Machine retrievability, entity density, E-E-A-T signals and real LLM citation tracking (BYOK). 13 criteria.
Rich-snippet eligibility, extractable Q&A and measured presence in AI Overviews via SERP API (BYOK). 8 criteria.
Source credibility, atomic answers, Knowledge Graph presence (Wikidata) and verifiable dating. 8 criteria.
Can autonomous agents discover, parse and choose you? MCP readiness, action schema, AI endpoints, NLWeb. 9 criteria.
Live testing: does a real agent comparator select you? Mechanics close to citation tracking (BYOK, K repetitions). Backlog.
The only open-source audit that scores whether AI agents can choose you.
No competitor scores this. GEO Optimizer includes a WebMCP check but it's an unscored bonus. Ahrefs, Semrush and Moz have no ASO signal at all. Seryvon makes it a full scored pillar — 9 deterministic criteria, all measurable without calling an agent.
WebMCP API detected: navigator.modelContext.registerTool() or toolname/tooldescription HTML attributes.
JSON-LD potentialAction: SearchAction, BuyAction, OrderAction, ReserveAction.
Product+Offer (price+availability), Service+areaServed, Event+dates, HowTo+steps.
/.well-known/ai.txt, /ai/summary.json, /ai/faq.json, /ai/service.json validated (HTTP 200 + JSON).
Consistent identity across site, Wikidata, LinkedIn, Crunchbase, G2 — what an agent sees when it resolves you.
robots.txt and CDN allow OAI-SearchBot, PerplexityBot, ClaudeBot, Google-Extended and other agent crawlers.
NLWeb endpoint conformance — the emerging standard for agent interrogation of websites.
Inputs labelled with label/for, aria-label or descriptive placeholder + defined action and method.
Links to /api-docs, /swagger or openapi.json/yaml — consumable directly by agent tooling.
Built to fill every blind spot the incumbents left open.
OpenSEO (MIT, ~2.1k★) excels at classic SEO with BYOK DataForSEO but has no transparent scoring and no ASO. GEO Optimizer (MIT, ~471★, 71 releases) leads on GEO/AEO but covers ASO only as an unscored bonus check, and does not do full SEO. The commercial trio (Ahrefs, Semrush, Moz) charge $100–500+/month for proprietary black-box scores — and none audit agentic readiness.
★ GEO Optimizer includes WebMCP as an unscored "bonus check", not a scored pillar. † OpenSEO covers basic GEO signals without LLM citation tracking or deterministic scoring.
From crawl to a score you can defend.
Async BFS crawl that respects robots.txt, rate-limits politely, renders JS via Playwright where needed, bounded by depth and page count you configure.
Collects all raw signals: HTTP, JSON-LD, Core Web Vitals (PSI), LLM citations, SERP presence, MCP readiness, AI discovery endpoints, Wikidata.
Deterministic 0–100 per criterion — pure functions, no randomness. Criteria are weighted into five pillars and one global score. Two runs → same result (variance < 2%).
JSON, HTML, PDF or Markdown. Every score links to its raw measured value, thresholds and formula. The action plan is auto-prioritised by impact × severity ÷ effort.
Open source does not mean prototype.
Seryvon v1.0.0rc4 ships with the discipline of a production service: mypy strict, ruff, 100% coverage, deterministic scoring tests and SSRF guard on every network entry point.
Seryvon Core v1.0.0rc4 is public.
The v1.0.0rc4 open-core release is publicly tagged with five pillars, React UI, i18n, BYOK and SSRF guard. Hosted monitoring remains separate and forthcoming.
Free tells you where you stand. Paid watches, remembers and collaborates.
The frontier is never a pillar — all five pillars are free forever. The frontier is a one-off audit versus a platform operated over time. You only pay for what costs real infrastructure.
Drop it into the workflow you already have.
uvx --from seryvon seryvon audit <url> — try it with nothing installed. Running in under 30 seconds.
Audit straight from Claude or Cursor — Seryvon exposes its own MCP server and eats its own dog food.
A GitHub Action that fails the build when your ASO or GEO score drops below a threshold you define.
An embeddable agentic-readiness badge for your site — earns backlinks, demonstrates credibility.
Star it, try it, or reach out.
Seryvon v1.0.0rc4 is public and ready for self-hosted evaluation. Read the repository, run an audit, or write about Enterprise and partnerships.
Read the public repository and follow ongoing development.
Waitlist, early access, partnerships and Enterprise inquiries.
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What is Seryvon?
Seryvon is an open-source web visibility audit tool for teams that need evidence about how a website can be found, understood, cited and chosen. It measures five distinct pillars: SEO, GEO, GSO, AEO and ASO. The score describes signals available in the inspected run; it is not proof of ranking, inclusion in an AI answer or successful agent activity. Read the measurement methodology and limitations before interpreting results.
- SEO: can a search engine discover and interpret the site?
- GEO: can a generative engine retrieve and cite the content?
- GSO: is the site prepared for Google AI search experiences?
- AEO: can an answer engine extract a direct, supported answer?
- ASO: can an autonomous agent discover and understand declared actions?
How does an AI visibility audit work?
Seryvon crawls the selected website, records technical and editorial signals, and combines them with optional provider measurements. The report identifies the URL, scope, date, coverage and rule evidence. A readiness result describes what the inspected page exposes; it does not claim that Google, ChatGPT or Perplexity has cited the page.
- Record crawl and provider configuration.
- Separate measured readiness from observed citations.
Does a Seryvon score prove an AI citation?
No. A score and an observed citation are separate findings. A citation requires a recorded response from a specific engine, with its prompt, model, retrieval mode and collection date.
- Readiness describes page signals.
- Citations require engine-specific evidence.
Is Seryvon available as a hosted service?
The open-core implementation and documentation are public. The managed hosted product is coming soon. Visitors can start with the quickstart, inspect the methodology and review the repository.
- Open core: public source and local evaluation.
- Managed service: planned, not yet generally available.
Audit your site in one command.
Open source, transparent and built for the era of agents. See exactly where you stand across all five pillars — for free.