thhanke.github.io
Build beautiful knowledge graphs with ontologies - A modern, lightweight web application for semantic data visualization
First seen 2026-11-05 · Last seen 2026-11-05 · Source: webmcp.com
Answer 16 · Act 25 · Transact 1 · Score: Not yet scored
Tool inspector
addNode
Create a NEW entity on the canvas. Writes rdf:type(s) + rdfs:label atomically so the canvas pipeline fires once, then auto-navigates to the new node. The node appears in the view matching its rdf:type (owl:Class → TBox; owl:ObjectProperty → TBox; owl:AnnotationProperty → TBox; owl:NamedIndividual or unknown → ABox). To assign multiple types at once (e.g. owl:NamedIndividual + ex:SalamiTopping) use typeIris:["owl:NamedIndividual","ex:SalamiTopping"] — do NOT call addNode + addTriple separately for this. Object and annotation properties are first-class OWL entities — create them as nodes with typeIri=owl:ObjectProperty, then assert rdfs:domain and rdfs:range on them via addTriple. Use setViewMode before calling addNode. For 5+ individuals use loadRdf(turtle=...) instead. Use addTriple (not addNode) to add properties or relationships to an entity that already exists.
Page: /ontosphere/
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
iri |
string | yes | — |
typeIri |
string | no | Single rdf:type IRI. Use typeIris for multiple types. |
typeIris |
array | no | One or more rdf:type IRIs. Use when an individual needs multiple types, e.g. ["owl:NamedIndividual","ex:SalamiTopping"]. Takes precedence over typeIri. |
label |
string | no | rdfs:label value for this individual |
Raw JSON schema
{
"type": "object",
"properties": {
"iri": {
"type": "string"
},
"typeIri": {
"type": "string",
"description": "Single rdf:type IRI. Use typeIris for multiple types."
},
"typeIris": {
"type": "array",
"items": {
"type": "string"
},
"description": "One or more rdf:type IRIs. Use when an individual needs multiple types, e.g. [\"owl:NamedIndividual\",\"ex:SalamiTopping\"]. Takes precedence over typeIri."
},
"label": {
"type": "string",
"description": "rdfs:label value for this individual"
}
},
"required": [
"iri"
]
}
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