properties: List all properties

API: ac.uk:embl-ebi-ontology-lookup-service-ols-api
Endpoint: /properties
Response format: application/json
Auth: none
Method: GET
Last Status: 200
Latency: 634ms

Description

Returns a paginated list of properties (relations) from all ontologies.

Parameters (2)

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

Page number (0-indexed)

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

Page size (number of results per page)

Examples (3)

List properties with default pagination curl
curl 'https://www.ebi.ac.uk/ols4/api/properties'
import requests

resp = requests.get("https://www.ebi.ac.uk/ols4/api/properties")
data = resp.json()
import zingu_apis

api = zingu_apis.api("embl-ebi-ontology-lookup-service-ols")
result = api.fetch("properties")

for item in result:
    print(item)
const resp = await fetch("https://www.ebi.ac.uk/ols4/api/properties");
const data = await resp.json();
List properties with custom page and size curl
curl 'https://www.ebi.ac.uk/ols4/api/properties?page=1&size=50'
import requests

resp = requests.get(
    "https://www.ebi.ac.uk/ols4/api/properties",
    params={
        'page': '1',
        'size': '50',
    },
)
data = resp.json()
import zingu_apis

api = zingu_apis.api("embl-ebi-ontology-lookup-service-ols")
result = api.fetch("properties", page=1, size=50)

for item in result:
    print(item)
const resp = await fetch("https://www.ebi.ac.uk/ols4/api/properties?page=1&size=50");
const data = await resp.json();
List first page with small page size curl
curl 'https://www.ebi.ac.uk/ols4/api/properties?page=0&size=10'
import requests

resp = requests.get(
    "https://www.ebi.ac.uk/ols4/api/properties",
    params={
        'page': '0',
        'size': '10',
    },
)
data = resp.json()
import zingu_apis

api = zingu_apis.api("embl-ebi-ontology-lookup-service-ols")
result = api.fetch("properties", page=0, size=10)

for item in result:
    print(item)
const resp = await fetch("https://www.ebi.ac.uk/ols4/api/properties?page=0&size=10");
const data = await resp.json();

Probe History

Latency

Status Codes

TimeStatusLatencySize
2026-04-16 02:21:16.597400 200 634ms
2026-04-16 00:40:08.209821 200 295ms
2026-04-16 00:14:14.089859 200 401ms
2026-04-15 02:59:19.856168 200 363ms
2026-04-15 02:20:26.608242 200 725ms
2026-04-15 00:35:02.120887 200 598ms
2026-04-14 01:23:59.093115 200 244ms
2026-04-14 00:34:20.728859 200 747ms
2026-04-14 00:23:32.576685 200 296ms
2026-04-12 14:50:05.669644 200 720ms
2026-04-12 14:10:23.315158 200 301ms
2026-04-12 12:36:52.281909 200 315ms
2026-04-10 06:46:33.380266 200 161ms
2026-04-10 01:40:01.337028 200 266ms
2026-04-10 00:41:10.881806 200 484ms
2026-04-09 01:52:25.803986 200 607ms
2026-04-09 00:47:23.869621 200 342ms
2026-04-09 00:28:07.130623 200 242ms
2026-04-08 07:28:59.903697 200 295ms
2026-04-08 06:56:17.549794 200 390ms
2026-04-08 00:06:23.651789 200 649ms
2026-04-07 01:19:03.591094 200 773ms
2026-04-07 00:36:00.407021 200 380ms
2026-04-07 00:10:18.652130 200 476ms
2026-04-06 06:00:07.158069 200 757ms
2026-04-06 04:41:43.744059 200 305ms
2026-04-05 19:28:40.092122 200 362ms
2026-04-05 14:45:24.724466 200 969ms
2026-04-05 14:32:32.499668 200 424ms
2026-03-23 10:41:53.537323 200 222ms
2026-03-23 10:37:06.578498 200 633ms 1.1MB
2026-03-23 09:16:13.754159 200 204ms