Extension (object)

Extensions represent any arbitrary object, whose content and semantics are defined by a third-party extension, and are one of the 5 types of pushable object.

Careful! A stand-alone “extension object” (as described on this page) is not the same thing as an “extension property” on another object, such as a note or actor. Extension properties do not need to have any of the fields specified here, can be any JSON type (not just objects), and should not be accessible at their own URI.

Schema

type: “extension”
self: uri(extension) required
extension: uri
[other fields as defined by the extension]

Example

(note that this is completely made up and is not meant to represent any real extension)

{
    "type": "extension",
    "self": "https://social.example/presence/10",
    "extension": "https://example.org/extension/presence",
    "actor": "https://social.example/actor/10",
    "presence": "online",
    "timestamp": "2025-03-22T07:42:32+00:00",
    "message": "hi guys"
}

PawPub

Table of Contents

Extension (object)

Schema

Example