Most AEO tools give you numbers. We give you structured data. Our ontology is modelled using OWL 2, the W3C standard used by compliance-grade data systems worldwide. Every entity in our product (brands, pages, AI engines, citations) has a formal definition your enterprise knowledge graph can consume directly.
The AEO ontology extends existing W3C and community vocabularies so any standards-compliant tool can consume our exports without custom integration.
W3C Web Ontology Language: the formal basis of our class and property definitions.
The structured-data vocabulary parsed natively by Google, Bing and major AI engines. We inherit classes like Organization, WebPage and SearchAction from it.
W3C Provenance Ontology: lets us model the lineage of citations (which engine cited which source in response to which prompt).
Simple Knowledge Organization System: used for our AEO compliance check taxonomy.
A live, force-directed view of every class in the ontology and how they relate. Hover a node for its definition. Click a node to jump to its entry in the class reference below.
Every class in the aeo: namespace, generated directly from the Turtle source. Imported classes from schema.org, PROV-O and SKOS are listed at the end for reference.
aeo:AEOComplianceCheckA named rule or heuristic used to evaluate whether a page complies with AEO best practices (e.g. schema markup, Q&A structure, factual grounding). Modelled as a skos:Concept to allow hierarchical taxonomies of checks.
aeo:Page → aeo:failsCheckaeo:Page → aeo:passesCheckaeo:AIEngineA generative answer engine or large language model service that produces answers to prompts. Examples: ChatGPT, Gemini, Perplexity, Claude, Google AI Overview.
aeo:Page → aeo:sourceForaeo:Citation → aeo:citedInAnsweraeo:BrandA commercial, non-profit or personal brand tracked for answer-engine visibility. Extends schema:Organization with AEO-specific semantics (monitored prompts, AI visibility, citations).
aeo:competesWith → aeo:Brandaeo:Mention → aeo:mentionsaeo:Brand → aeo:competesWithaeo:VisibilityReport → aeo:forBrandaeo:CitationA reference in an AI engine's answer that links to, quotes from, or attributes information to a source (typically a web page). Modelled as a prov:Entity so that its derivation chain can be tracked.
aeo:cites → aeo:Pageaeo:citedInAnswer → aeo:AIEngineaeo:CompetitorA brand identified as competing with the tracked brand for the same prompts, queries, or answer-engine share of voice. Every Competitor is a Brand.
aeo:MentionAn occurrence of a brand name or brand entity inside an AI engine's answer text, regardless of whether it is linked or cited.
aeo:mentions → aeo:Brandaeo:OpportunityA detected actionable insight — for example an unranked keyword, a missing citation, or a declining mention trend — that represents a chance to improve visibility.
aeo:OptimisationScoreA numerical assessment of how well a page is optimised for answer engines, composed of weighted compliance check outcomes.
aeo:scoreValue → xsd:decimalaeo:Page → aeo:hasScoreaeo:PageA web page indexed, crawled, or evaluated by the AEO platform. Extends schema:WebPage with AEO-specific annotations such as optimisation scores and compliance checks.
aeo:answersPrompt → aeo:Promptaeo:ranksFor → aeo:Queryaeo:targetsQuery → aeo:Queryaeo:failsCheck → aeo:AEOComplianceCheckaeo:passesCheck → aeo:AEOComplianceCheckaeo:sourceFor → aeo:AIEngineaeo:partOfCluster → aeo:Pageaeo:linksTo → aeo:Pageaeo:hasScore → aeo:OptimisationScoreaeo:Citation → aeo:citesaeo:Page → aeo:partOfClusteraeo:Page → aeo:linksToaeo:PromptA natural-language input issued to a generative AI engine (e.g. ChatGPT, Gemini, Perplexity, Claude). A specialisation of aeo:Query focused on conversational or answer-engine interactions.
aeo:Page → aeo:answersPromptaeo:QueryA user-issued information-seeking expression directed at a search or answer engine. Specialisation of schema:SearchAction capturing both classical search queries and answer-engine prompts.
aeo:Page → aeo:ranksForaeo:Page → aeo:targetsQueryaeo:VisibilityReportA periodic aggregation of a brand's AI visibility metrics across engines and prompts, including mention rate, citation rate, share of voice, and rank.
aeo:forBrand → aeo:Brandaeo:coveringPeriod → schema:DateTimeaeo:mentionCount → xsd:nonNegativeIntegeraeo:citationCount → xsd:nonNegativeIntegerThe same ontology, three serialisations. All served from the canonical endpoint with HTTP content negotiation: you can also request the endpoint directly and send an Accept header.
Canonical, human-editable source. Preferred for RDF tool chains.
Ideal for JavaScript consumers and graph-database import.
For classical OWL / RDF tool chains and Protégé.
The endpoint at /ontology/aeo/v1/ honours the Accept header and returns the matching serialisation: the links above set the right extension for convenience.
Because the ontology is standard OWL, you can query any instance graph with SPARQL. The queries below are illustrative: run them against your own triple store once your knowledge graph is exported.
Pulls every aeo:Citation attached to the given brand and groups by the answering AI engine.
PREFIX aeo: <https://prismdiscovery.ai/ontology/aeo#>
PREFIX schema: <https://schema.org/>
SELECT ?engine (COUNT(?citation) AS ?cites) WHERE {
?brand a aeo:Brand ;
schema:name "Acme Ltd" .
?page aeo:forBrand ?brand .
?citation aeo:cites ?page ;
aeo:citedInAnswer ?engine ;
schema:dateCreated ?when .
FILTER (?when >= (NOW() - "P30D"^^xsd:duration))
}
GROUP BY ?engine
ORDER BY DESC(?cites)Surfaces aeo:Page instances failing any aeo:AEOComplianceCheck whose skos:broader taxonomy is "structured-data".
PREFIX aeo: <https://prismdiscovery.ai/ontology/aeo#>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
SELECT ?page ?check WHERE {
?page a aeo:Page ;
aeo:failsCheck ?check .
?check a aeo:AEOComplianceCheck ;
skos:broader aeo:StructuredDataChecks .
}Counts distinct mentions per brand for pages answering a given aeo:Prompt over the current reporting period.
PREFIX aeo: <https://prismdiscovery.ai/ontology/aeo#>
SELECT ?brand (COUNT(DISTINCT ?mention) AS ?mentions) WHERE {
?prompt a aeo:Prompt ;
schema:name "best crm for smb" .
?page aeo:answersPrompt ?prompt .
?mention aeo:mentions ?brand ;
aeo:citedInAnswer ?engine .
}
GROUP BY ?brand
ORDER BY DESC(?mentions)Finds pages that already rank for a query but have no aeo:OptimisationScore: candidates for a rapid AEO audit.
PREFIX aeo: <https://prismdiscovery.ai/ontology/aeo#>
SELECT ?page ?query WHERE {
?page a aeo:Page ;
aeo:ranksFor ?query .
FILTER NOT EXISTS { ?page aeo:hasScore ?score }
}AEO Ontology v1.0.0 · CC-BY-4.0 · Published 2026-04-23.
The ontology follows Semantic Versioning at the document level. Major releases are reserved for backward-incompatible changes (removing a class or property, narrowing a domain or range, renaming an IRI) and mint a new namespace, older versions remain served for at least twelve months after a major bump. Minor releases are additive and backward-compatible, new classes, new properties, new annotations. Patch releases cover documentation-only fixes (typos, clarified comments) without semantic impact.
Terms are never silently removed: deprecations are flagged with owl:deprecated true in a minor release and only purged in the next major one. External parties are encouraged to extend the vocabulary in their own namespaces with rdfs:subClassOf rather than redefining terms under aeo:, and to propose promotions upstream when an extension generalises.
Import the ontology, hook it into your own triple store, and start reasoning over AI visibility today.
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