Web Service Method: Add a New Relation Property to a Resource

19/03/2026

Description
Use this API call to add a new relation property to a resource.

URL: /PoolParty/api/editor/{project}/addRelation

Supported Methods
POST

application/x-www-form-urlencoded

Parameter	Comment	Type	Required
editor	The editor's URI.	IRI JSON representation of an IRI object.	true

Attribute	Type	Comment
context	String	URI of the mutable graph in which the source exists.
predicate	String	URI of a relation property
subject	String	URI of source
value	CustomValue	URI of target resource.

{
  "predicate" : "some predicate",
  "subject" : "https://semantic-web.com/api/subject#22780",
  "context" : "some context",
  "value" : "some value"
}

In this section: