GET /ontologies/{ontologyId}/terms

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

Summary: List terms in an ontology
Operation ID: getOntologyTerms
Auth: unknown
Description

Returns a paginated list of all terms (classes) in the specified ontology

Parameters (4)

lang (string, query, optional, default: en)

Language code

ontologyId (string, path, required)

Ontology ID (e.g., 'go', 'efo', 'mondo')

page (integer, query, optional, default: 0)

Page number (0-indexed)

size (integer, query, optional, default: 20)

Page size

Examples (1)

TitleTypeURLAction
List Terms in Ontology openapi-spec https://www.ebi.ac.uk/ols4/api/ontologies/go/terms

Probe History

Latency

Status Codes

TimeStatusLatencySize
2026-03-23 09:09:51.368864 200 1008ms 2.0MB