GET /ontologies/{ontologyId}/terms/{iri}/children

ac.uk:embl-ebi-ontology-lookup-service-ols-api

Summary: Get child terms
Operation ID: getTermChildren
Auth: unknown
Description

Returns the direct child terms of the specified term

Parameters (3)

iri (string, path, required)

URL-encoded IRI of the term

lang (string, query, optional, default: en)
ontologyId (string, path, required)

Examples (3)

TitleTypeURLAction
Get children of GO biological_process term curl https://www.ebi.ac.uk/ols4/api/ontologies/go/terms/http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FGO_0008150/children
Get children with custom pagination curl https://www.ebi.ac.uk/ols4/api/ontologies/go/terms/http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FGO_0005575/children?page=0&size=10
Get children from MONDO disease ontology curl https://www.ebi.ac.uk/ols4/api/ontologies/mondo/terms/http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FMONDO_0000001/children

Probe History

Latency

Status Codes

TimeStatusLatencySize
2026-03-23 10:10:08.732669 400 172ms
2026-03-23 09:28:41.429605 400 138ms
2026-03-23 09:25:09.415826 400 144ms