Retrieving all classifications:

http://WS_URL/api/json/DOMAIN_CODE/shop/classification?subLevel=true

Open

Retrieving the top x:

http://WS_URL/api/json/DOMAIN_CODE/shop/classification/topClassification?top=3

Open

Searching inside classifications (searching “po…” inside NUR code 440 and 446):

http://WS_URL/api/json/DOMAIN_CODE/searchEngine/onix3_full/select?start=0&rows=12&q=pot* AND NUR:(“440” “446”)