Varying the properties of the Create Activity

Example 1: default

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "http://host.test/some/actor",
  "id": "http://host.test/activities/SKTyinj-nYrkO_h4",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "content": "text",
    "id": "http://host.test/objects/QNWbiBGl12K1TGUC",
    "published": "2025-12-23T10:32:31Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "cc": [],
    "tag": [
      {
        "type": "Mention",
        "href": "http://other.test/some/actor"
      }
    ],
    "type": "Note"
  },
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "type": "Create"
}

Object

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "attributedTo": "http://host.test/some/actor",
  "content": "text",
  "id": "http://host.test/objects/QNWbiBGl12K1TGUC",
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "tag": [
    {
      "type": "Mention",
      "href": "http://other.test/some/actor"
    }
  ],
  "type": "Note"
}

Example 2: without published

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "http://host.test/some/actor",
  "id": "http://host.test/activities/kgV-oPvlQYsd7Lxm",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "content": "text",
    "id": "http://host.test/objects/iCZMt696AeXwu3QO",
    "published": "2025-12-23T10:32:31Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "cc": [],
    "tag": [
      {
        "type": "Mention",
        "href": "http://other.test/some/actor"
      }
    ],
    "type": "Note"
  },
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "type": "Create"
}

Object

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "attributedTo": "http://host.test/some/actor",
  "content": "text",
  "id": "http://host.test/objects/iCZMt696AeXwu3QO",
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "tag": [
    {
      "type": "Mention",
      "href": "http://other.test/some/actor"
    }
  ],
  "type": "Note"
}

Example 3: null @context

Comments

Validation of activity against schema failed

None is not valid under any of the given schemas

Failed validating 'anyOf' in schema['properties']['@context']:
    {'anyOf': [{'type': 'string'}, {'items': {}, 'type': 'array'}],
     'examples': ['https://www.w3.org/ns/activitystreams',
                  ['https://www.w3.org/ns/activitystreams',
                   {'Hashtag': 'as:Hashtag'}]]}

On instance['@context']:
    None

Activity

{
  "@context": null,
  "actor": "http://host.test/some/actor",
  "id": "http://host.test/activities/BXedXNs1l9l7DvvX",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "content": "text",
    "id": "http://host.test/objects/489mHa96eW7KPlnK",
    "published": "2025-12-23T10:32:31Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "cc": [],
    "tag": [
      {
        "type": "Mention",
        "href": "http://other.test/some/actor"
      }
    ],
    "type": "Note"
  },
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "type": "Create"
}

Object

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "attributedTo": "http://host.test/some/actor",
  "content": "text",
  "id": "http://host.test/objects/489mHa96eW7KPlnK",
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "tag": [
    {
      "type": "Mention",
      "href": "http://other.test/some/actor"
    }
  ],
  "type": "Note"
}

Example 4: null actor

Comments

Validation of activity against schema failed

None is not of type 'string'

Failed validating 'type' in schema['properties']['actor']:
    {'description': 'id of the actor performing this activity',
     'examples': ['https://actor.example/'],
     'type': 'string'}

On instance['actor']:
    None

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": null,
  "id": "http://host.test/activities/gCiA3vfV8VfrJ4Fp",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "content": "text",
    "id": "http://host.test/objects/QsPXYQObFyplJkcz",
    "published": "2025-12-23T10:32:31Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "cc": [],
    "tag": [
      {
        "type": "Mention",
        "href": "http://other.test/some/actor"
      }
    ],
    "type": "Note"
  },
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "type": "Create"
}

Object

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "attributedTo": "http://host.test/some/actor",
  "content": "text",
  "id": "http://host.test/objects/QsPXYQObFyplJkcz",
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "tag": [
    {
      "type": "Mention",
      "href": "http://other.test/some/actor"
    }
  ],
  "type": "Note"
}

Example 5: null id

Comments

Validation of activity against schema failed

None is not of type 'string'

Failed validating 'type' in schema['properties']['id']:
    {'description': 'id of the activity or object',
     'examples': ['https://actor.example/some_id'],
     'type': 'string'}

On instance['id']:
    None

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "http://host.test/some/actor",
  "id": null,
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "content": "text",
    "id": "http://host.test/objects/TXr3X8kiuERDSt7N",
    "published": "2025-12-23T10:32:31Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "cc": [],
    "tag": [
      {
        "type": "Mention",
        "href": "http://other.test/some/actor"
      }
    ],
    "type": "Note"
  },
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "type": "Create"
}

Object

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "attributedTo": "http://host.test/some/actor",
  "content": "text",
  "id": "http://host.test/objects/TXr3X8kiuERDSt7N",
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "tag": [
    {
      "type": "Mention",
      "href": "http://other.test/some/actor"
    }
  ],
  "type": "Note"
}

Example 6: null published

Comments

Validation of activity against schema failed

None is not of type 'string'

Failed validating 'type' in schema['properties']['published']:
    {'description': 'Moment of this activity or object being published',
     'format': 'date-time',
     'type': 'string'}

On instance['published']:
    None

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "http://host.test/some/actor",
  "id": "http://host.test/activities/TIIaEolxCcb0KnbG",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "content": "text",
    "id": "http://host.test/objects/uNusVLOh65XdieA0",
    "published": "2025-12-23T10:32:31Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "cc": [],
    "tag": [
      {
        "type": "Mention",
        "href": "http://other.test/some/actor"
      }
    ],
    "type": "Note"
  },
  "published": null,
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "type": "Create"
}

Object

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "attributedTo": "http://host.test/some/actor",
  "content": "text",
  "id": "http://host.test/objects/uNusVLOh65XdieA0",
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "tag": [
    {
      "type": "Mention",
      "href": "http://other.test/some/actor"
    }
  ],
  "type": "Note"
}

Example 7: null to

Comments

Validation of activity against schema failed

None is not of type 'array'

Failed validating 'type' in schema['properties']['to']:
    {'description': 'Array of actors this activity or object is addressed '
                    'to',
     'examples': [['https://bob.example'],
                  ['https://alice.example', 'https://bob.example']],
     'items': {'type': 'string'},
     'minItems': 1,
     'type': 'array'}

On instance['to']:
    None

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "http://host.test/some/actor",
  "id": "http://host.test/activities/jYUNmy0i12EUdjBc",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "content": "text",
    "id": "http://host.test/objects/Dr7nStuRujlkI3YM",
    "published": "2025-12-23T10:32:31Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "cc": [],
    "tag": [
      {
        "type": "Mention",
        "href": "http://other.test/some/actor"
      }
    ],
    "type": "Note"
  },
  "published": "2025-12-23T10:32:31Z",
  "to": null,
  "cc": [],
  "type": "Create"
}

Object

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "attributedTo": "http://host.test/some/actor",
  "content": "text",
  "id": "http://host.test/objects/Dr7nStuRujlkI3YM",
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "tag": [
    {
      "type": "Mention",
      "href": "http://other.test/some/actor"
    }
  ],
  "type": "Note"
}

Example 8: null cc

Comments

Validation of activity against schema failed

None is not of type 'array'

Failed validating 'type' in schema['properties']['cc']:
    {'default': [],
     'description': 'Array of actors this activity or object is carbon '
                    'copied to.',
     'examples': [['https://bob.example'],
                  ['https://alice.example', 'https://bob.example']],
     'items': {'type': 'string'},
     'type': 'array'}

On instance['cc']:
    None

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "http://host.test/some/actor",
  "id": "http://host.test/activities/UrMyD2bWG5-4LJqI",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "content": "text",
    "id": "http://host.test/objects/nS8WFheVBlEnhIZ-",
    "published": "2025-12-23T10:32:31Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "cc": [],
    "tag": [
      {
        "type": "Mention",
        "href": "http://other.test/some/actor"
      }
    ],
    "type": "Note"
  },
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": null,
  "type": "Create"
}

Object

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "attributedTo": "http://host.test/some/actor",
  "content": "text",
  "id": "http://host.test/objects/nS8WFheVBlEnhIZ-",
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "tag": [
    {
      "type": "Mention",
      "href": "http://other.test/some/actor"
    }
  ],
  "type": "Note"
}

Example 9: null type

Comments

Validation of activity against schema failed

None is not of type 'string'

Failed validating 'type' in schema['properties']['type']:
    {'description': 'Type of the activity or activity',
     'examples': ['Follow', 'Accept', 'Create', 'Undo', 'Like', 'Note'],
     'type': 'string'}

On instance['type']:
    None

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "http://host.test/some/actor",
  "id": "http://host.test/activities/8FsQzmHmaG10WJch",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "content": "text",
    "id": "http://host.test/objects/gH9GE7l1f5mJCde_",
    "published": "2025-12-23T10:32:31Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "cc": [],
    "tag": [
      {
        "type": "Mention",
        "href": "http://other.test/some/actor"
      }
    ],
    "type": "Note"
  },
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "type": null
}

Object

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "attributedTo": "http://host.test/some/actor",
  "content": "text",
  "id": "http://host.test/objects/gH9GE7l1f5mJCde_",
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "tag": [
    {
      "type": "Mention",
      "href": "http://other.test/some/actor"
    }
  ],
  "type": "Note"
}

Example 10: without @context

Comments

Validation of activity against schema failed

'@context' is a required property

Failed validating 'required' in schema:
    {'additionalProperties': True,
     'description': 'Draft of a schema for ActivityPub activities',
     'properties': {'@context': {'anyOf': [{'type': 'string'},
                                           {'items': {}, 'type': 'array'}],
                                 'examples': ['https://www.w3.org/ns/activitystreams',
                                              ['https://www.w3.org/ns/activitystreams',
                                               {'Hashtag': 'as:Hashtag'}]]},
                    'id': {'description': 'id of the activity or object',
                           'examples': ['https://actor.example/some_id'],
                           'type': 'string'},
                    'to': {'description': 'Array of actors this activity '
                                          'or object is addressed to',
                           'examples': [['https://bob.example'],
                                        ['https://alice.example',
                                         'https://bob.example']],
                           'items': {'type': 'string'},
                           'minItems': 1,
                           'type': 'array'},
                    'cc': {'default': [],
                           'description': 'Array of actors this activity '
                                          'or object is carbon copied to.',
                           'examples': [['https://bob.example'],
                                        ['https://alice.example',
                                         'https://bob.example']],
                           'items': {'type': 'string'},
                           'type': 'array'},
                    'published': {'description': 'Moment of this activity '
                                                 'or object being '
                                                 'published',
                                  'format': 'date-time',
                                  'type': 'string'},
                    'type': {'description': 'Type of the activity or '
                                            'activity',
                             'examples': ['Follow',
                                          'Accept',
                                          'Create',
                                          'Undo',
                                          'Like',
                                          'Note'],
                             'type': 'string'},
                    'actor': {'description': 'id of the actor performing '
                                             'this activity',
                              'examples': ['https://actor.example/'],
                              'type': 'string'},
                    'object': {'anyOf': [{'type': 'string'},
                                         {'type': 'object'}]},
                    'target': {'anyOf': [{'type': 'string'},
                                         {'additionalProperties': True,
                                          'type': 'object'}],
                               'description': 'The target, e.g. for an Add '
                                              'activity',
                               'examples': ['https://other.example/target_id',
                                            {'content': 'meow',
                                             'type': 'Note'}]},
                    'content': {'description': 'The content used for '
                                               'example to represent the '
                                               'Emote for a like',
                                'examples': ['🐮', '❤️'],
                                'type': 'string'}},
     'required': ['@context', 'id', 'to', 'type', 'actor', 'cc'],
     'title': 'Activity',
     'type': 'object'}

On instance:
    {'actor': 'http://host.test/some/actor',
     'id': 'http://host.test/activities/cowGIx5GX_fRVkem',
     'object': {'@context': ['https://www.w3.org/ns/activitystreams'],
                'attributedTo': 'http://host.test/some/actor',
                'content': 'text',
                'id': 'http://host.test/objects/KVplTvINtYGyVMB9',
                'published': '2025-12-23T10:32:31Z',
                'to': ['https://www.w3.org/ns/activitystreams#Public',
                       'http://other.test/some/actor'],
                'cc': [],
                'tag': [{'type': 'Mention',
                         'href': 'http://other.test/some/actor'}],
                'type': 'Note'},
     'published': '2025-12-23T10:32:31Z',
     'to': ['https://www.w3.org/ns/activitystreams#Public',
            'http://other.test/some/actor'],
     'cc': [],
     'type': 'Create'}

Activity

{
  "actor": "http://host.test/some/actor",
  "id": "http://host.test/activities/4fku_de4DSWi4iEa",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "content": "text",
    "id": "http://host.test/objects/x40g0E5svzweGiDl",
    "published": "2025-12-23T10:32:31Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "cc": [],
    "tag": [
      {
        "type": "Mention",
        "href": "http://other.test/some/actor"
      }
    ],
    "type": "Note"
  },
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "type": "Create"
}

Object

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "attributedTo": "http://host.test/some/actor",
  "content": "text",
  "id": "http://host.test/objects/x40g0E5svzweGiDl",
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "tag": [
    {
      "type": "Mention",
      "href": "http://other.test/some/actor"
    }
  ],
  "type": "Note"
}

Example 11: without actor

Comments

Validation of activity against schema failed

'actor' is a required property

Failed validating 'required' in schema:
    {'additionalProperties': True,
     'description': 'Draft of a schema for ActivityPub activities',
     'properties': {'@context': {'anyOf': [{'type': 'string'},
                                           {'items': {}, 'type': 'array'}],
                                 'examples': ['https://www.w3.org/ns/activitystreams',
                                              ['https://www.w3.org/ns/activitystreams',
                                               {'Hashtag': 'as:Hashtag'}]]},
                    'id': {'description': 'id of the activity or object',
                           'examples': ['https://actor.example/some_id'],
                           'type': 'string'},
                    'to': {'description': 'Array of actors this activity '
                                          'or object is addressed to',
                           'examples': [['https://bob.example'],
                                        ['https://alice.example',
                                         'https://bob.example']],
                           'items': {'type': 'string'},
                           'minItems': 1,
                           'type': 'array'},
                    'cc': {'default': [],
                           'description': 'Array of actors this activity '
                                          'or object is carbon copied to.',
                           'examples': [['https://bob.example'],
                                        ['https://alice.example',
                                         'https://bob.example']],
                           'items': {'type': 'string'},
                           'type': 'array'},
                    'published': {'description': 'Moment of this activity '
                                                 'or object being '
                                                 'published',
                                  'format': 'date-time',
                                  'type': 'string'},
                    'type': {'description': 'Type of the activity or '
                                            'activity',
                             'examples': ['Follow',
                                          'Accept',
                                          'Create',
                                          'Undo',
                                          'Like',
                                          'Note'],
                             'type': 'string'},
                    'actor': {'description': 'id of the actor performing '
                                             'this activity',
                              'examples': ['https://actor.example/'],
                              'type': 'string'},
                    'object': {'anyOf': [{'type': 'string'},
                                         {'type': 'object'}]},
                    'target': {'anyOf': [{'type': 'string'},
                                         {'additionalProperties': True,
                                          'type': 'object'}],
                               'description': 'The target, e.g. for an Add '
                                              'activity',
                               'examples': ['https://other.example/target_id',
                                            {'content': 'meow',
                                             'type': 'Note'}]},
                    'content': {'description': 'The content used for '
                                               'example to represent the '
                                               'Emote for a like',
                                'examples': ['🐮', '❤️'],
                                'type': 'string'}},
     'required': ['@context', 'id', 'to', 'type', 'actor', 'cc'],
     'title': 'Activity',
     'type': 'object'}

On instance:
    {'@context': ['https://www.w3.org/ns/activitystreams'],
     'id': 'http://host.test/activities/XSHefw5muMg08hNf',
     'object': {'@context': ['https://www.w3.org/ns/activitystreams'],
                'attributedTo': 'http://host.test/some/actor',
                'content': 'text',
                'id': 'http://host.test/objects/prJwIEks38X9ZR6R',
                'published': '2025-12-23T10:32:31Z',
                'to': ['https://www.w3.org/ns/activitystreams#Public',
                       'http://other.test/some/actor'],
                'cc': [],
                'tag': [{'type': 'Mention',
                         'href': 'http://other.test/some/actor'}],
                'type': 'Note'},
     'published': '2025-12-23T10:32:31Z',
     'to': ['https://www.w3.org/ns/activitystreams#Public',
            'http://other.test/some/actor'],
     'cc': [],
     'type': 'Create'}

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "id": "http://host.test/activities/cTuEbD8kGNULC0i-",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "content": "text",
    "id": "http://host.test/objects/q31YsNYt5MQADy66",
    "published": "2025-12-23T10:32:31Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "cc": [],
    "tag": [
      {
        "type": "Mention",
        "href": "http://other.test/some/actor"
      }
    ],
    "type": "Note"
  },
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "type": "Create"
}

Object

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "attributedTo": "http://host.test/some/actor",
  "content": "text",
  "id": "http://host.test/objects/q31YsNYt5MQADy66",
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "tag": [
    {
      "type": "Mention",
      "href": "http://other.test/some/actor"
    }
  ],
  "type": "Note"
}

Example 12: without id

Comments

Validation of activity against schema failed

'id' is a required property

Failed validating 'required' in schema:
    {'additionalProperties': True,
     'description': 'Draft of a schema for ActivityPub activities',
     'properties': {'@context': {'anyOf': [{'type': 'string'},
                                           {'items': {}, 'type': 'array'}],
                                 'examples': ['https://www.w3.org/ns/activitystreams',
                                              ['https://www.w3.org/ns/activitystreams',
                                               {'Hashtag': 'as:Hashtag'}]]},
                    'id': {'description': 'id of the activity or object',
                           'examples': ['https://actor.example/some_id'],
                           'type': 'string'},
                    'to': {'description': 'Array of actors this activity '
                                          'or object is addressed to',
                           'examples': [['https://bob.example'],
                                        ['https://alice.example',
                                         'https://bob.example']],
                           'items': {'type': 'string'},
                           'minItems': 1,
                           'type': 'array'},
                    'cc': {'default': [],
                           'description': 'Array of actors this activity '
                                          'or object is carbon copied to.',
                           'examples': [['https://bob.example'],
                                        ['https://alice.example',
                                         'https://bob.example']],
                           'items': {'type': 'string'},
                           'type': 'array'},
                    'published': {'description': 'Moment of this activity '
                                                 'or object being '
                                                 'published',
                                  'format': 'date-time',
                                  'type': 'string'},
                    'type': {'description': 'Type of the activity or '
                                            'activity',
                             'examples': ['Follow',
                                          'Accept',
                                          'Create',
                                          'Undo',
                                          'Like',
                                          'Note'],
                             'type': 'string'},
                    'actor': {'description': 'id of the actor performing '
                                             'this activity',
                              'examples': ['https://actor.example/'],
                              'type': 'string'},
                    'object': {'anyOf': [{'type': 'string'},
                                         {'type': 'object'}]},
                    'target': {'anyOf': [{'type': 'string'},
                                         {'additionalProperties': True,
                                          'type': 'object'}],
                               'description': 'The target, e.g. for an Add '
                                              'activity',
                               'examples': ['https://other.example/target_id',
                                            {'content': 'meow',
                                             'type': 'Note'}]},
                    'content': {'description': 'The content used for '
                                               'example to represent the '
                                               'Emote for a like',
                                'examples': ['🐮', '❤️'],
                                'type': 'string'}},
     'required': ['@context', 'id', 'to', 'type', 'actor', 'cc'],
     'title': 'Activity',
     'type': 'object'}

On instance:
    {'@context': ['https://www.w3.org/ns/activitystreams'],
     'actor': 'http://host.test/some/actor',
     'object': {'@context': ['https://www.w3.org/ns/activitystreams'],
                'attributedTo': 'http://host.test/some/actor',
                'content': 'text',
                'id': 'http://host.test/objects/_EcmfrEeSFaJfK3x',
                'published': '2025-12-23T10:32:31Z',
                'to': ['https://www.w3.org/ns/activitystreams#Public',
                       'http://other.test/some/actor'],
                'cc': [],
                'tag': [{'type': 'Mention',
                         'href': 'http://other.test/some/actor'}],
                'type': 'Note'},
     'published': '2025-12-23T10:32:31Z',
     'to': ['https://www.w3.org/ns/activitystreams#Public',
            'http://other.test/some/actor'],
     'cc': [],
     'type': 'Create'}

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "http://host.test/some/actor",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "content": "text",
    "id": "http://host.test/objects/KxYlcn7H4ctv4HBM",
    "published": "2025-12-23T10:32:31Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "cc": [],
    "tag": [
      {
        "type": "Mention",
        "href": "http://other.test/some/actor"
      }
    ],
    "type": "Note"
  },
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "type": "Create"
}

Object

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "attributedTo": "http://host.test/some/actor",
  "content": "text",
  "id": "http://host.test/objects/KxYlcn7H4ctv4HBM",
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "tag": [
    {
      "type": "Mention",
      "href": "http://other.test/some/actor"
    }
  ],
  "type": "Note"
}

Example 13: without to

Comments

Validation of activity against schema failed

'to' is a required property

Failed validating 'required' in schema:
    {'additionalProperties': True,
     'description': 'Draft of a schema for ActivityPub activities',
     'properties': {'@context': {'anyOf': [{'type': 'string'},
                                           {'items': {}, 'type': 'array'}],
                                 'examples': ['https://www.w3.org/ns/activitystreams',
                                              ['https://www.w3.org/ns/activitystreams',
                                               {'Hashtag': 'as:Hashtag'}]]},
                    'id': {'description': 'id of the activity or object',
                           'examples': ['https://actor.example/some_id'],
                           'type': 'string'},
                    'to': {'description': 'Array of actors this activity '
                                          'or object is addressed to',
                           'examples': [['https://bob.example'],
                                        ['https://alice.example',
                                         'https://bob.example']],
                           'items': {'type': 'string'},
                           'minItems': 1,
                           'type': 'array'},
                    'cc': {'default': [],
                           'description': 'Array of actors this activity '
                                          'or object is carbon copied to.',
                           'examples': [['https://bob.example'],
                                        ['https://alice.example',
                                         'https://bob.example']],
                           'items': {'type': 'string'},
                           'type': 'array'},
                    'published': {'description': 'Moment of this activity '
                                                 'or object being '
                                                 'published',
                                  'format': 'date-time',
                                  'type': 'string'},
                    'type': {'description': 'Type of the activity or '
                                            'activity',
                             'examples': ['Follow',
                                          'Accept',
                                          'Create',
                                          'Undo',
                                          'Like',
                                          'Note'],
                             'type': 'string'},
                    'actor': {'description': 'id of the actor performing '
                                             'this activity',
                              'examples': ['https://actor.example/'],
                              'type': 'string'},
                    'object': {'anyOf': [{'type': 'string'},
                                         {'type': 'object'}]},
                    'target': {'anyOf': [{'type': 'string'},
                                         {'additionalProperties': True,
                                          'type': 'object'}],
                               'description': 'The target, e.g. for an Add '
                                              'activity',
                               'examples': ['https://other.example/target_id',
                                            {'content': 'meow',
                                             'type': 'Note'}]},
                    'content': {'description': 'The content used for '
                                               'example to represent the '
                                               'Emote for a like',
                                'examples': ['🐮', '❤️'],
                                'type': 'string'}},
     'required': ['@context', 'id', 'to', 'type', 'actor', 'cc'],
     'title': 'Activity',
     'type': 'object'}

On instance:
    {'@context': ['https://www.w3.org/ns/activitystreams'],
     'actor': 'http://host.test/some/actor',
     'id': 'http://host.test/activities/xL53EQ9J76AZcpxA',
     'object': {'@context': ['https://www.w3.org/ns/activitystreams'],
                'attributedTo': 'http://host.test/some/actor',
                'content': 'text',
                'id': 'http://host.test/objects/5H3WI9s3s-9eYt9-',
                'published': '2025-12-23T10:32:31Z',
                'to': ['https://www.w3.org/ns/activitystreams#Public',
                       'http://other.test/some/actor'],
                'cc': [],
                'tag': [{'type': 'Mention',
                         'href': 'http://other.test/some/actor'}],
                'type': 'Note'},
     'published': '2025-12-23T10:32:31Z',
     'cc': [],
     'type': 'Create'}

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "http://host.test/some/actor",
  "id": "http://host.test/activities/pWN49TgMceP37fUE",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "content": "text",
    "id": "http://host.test/objects/1YrSq7gMw5z4p-Zv",
    "published": "2025-12-23T10:32:31Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "cc": [],
    "tag": [
      {
        "type": "Mention",
        "href": "http://other.test/some/actor"
      }
    ],
    "type": "Note"
  },
  "published": "2025-12-23T10:32:31Z",
  "cc": [],
  "type": "Create"
}

Object

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "attributedTo": "http://host.test/some/actor",
  "content": "text",
  "id": "http://host.test/objects/1YrSq7gMw5z4p-Zv",
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "tag": [
    {
      "type": "Mention",
      "href": "http://other.test/some/actor"
    }
  ],
  "type": "Note"
}

Example 14: without cc

Comments

Validation of activity against schema failed

'cc' is a required property

Failed validating 'required' in schema:
    {'additionalProperties': True,
     'description': 'Draft of a schema for ActivityPub activities',
     'properties': {'@context': {'anyOf': [{'type': 'string'},
                                           {'items': {}, 'type': 'array'}],
                                 'examples': ['https://www.w3.org/ns/activitystreams',
                                              ['https://www.w3.org/ns/activitystreams',
                                               {'Hashtag': 'as:Hashtag'}]]},
                    'id': {'description': 'id of the activity or object',
                           'examples': ['https://actor.example/some_id'],
                           'type': 'string'},
                    'to': {'description': 'Array of actors this activity '
                                          'or object is addressed to',
                           'examples': [['https://bob.example'],
                                        ['https://alice.example',
                                         'https://bob.example']],
                           'items': {'type': 'string'},
                           'minItems': 1,
                           'type': 'array'},
                    'cc': {'default': [],
                           'description': 'Array of actors this activity '
                                          'or object is carbon copied to.',
                           'examples': [['https://bob.example'],
                                        ['https://alice.example',
                                         'https://bob.example']],
                           'items': {'type': 'string'},
                           'type': 'array'},
                    'published': {'description': 'Moment of this activity '
                                                 'or object being '
                                                 'published',
                                  'format': 'date-time',
                                  'type': 'string'},
                    'type': {'description': 'Type of the activity or '
                                            'activity',
                             'examples': ['Follow',
                                          'Accept',
                                          'Create',
                                          'Undo',
                                          'Like',
                                          'Note'],
                             'type': 'string'},
                    'actor': {'description': 'id of the actor performing '
                                             'this activity',
                              'examples': ['https://actor.example/'],
                              'type': 'string'},
                    'object': {'anyOf': [{'type': 'string'},
                                         {'type': 'object'}]},
                    'target': {'anyOf': [{'type': 'string'},
                                         {'additionalProperties': True,
                                          'type': 'object'}],
                               'description': 'The target, e.g. for an Add '
                                              'activity',
                               'examples': ['https://other.example/target_id',
                                            {'content': 'meow',
                                             'type': 'Note'}]},
                    'content': {'description': 'The content used for '
                                               'example to represent the '
                                               'Emote for a like',
                                'examples': ['🐮', '❤️'],
                                'type': 'string'}},
     'required': ['@context', 'id', 'to', 'type', 'actor', 'cc'],
     'title': 'Activity',
     'type': 'object'}

On instance:
    {'@context': ['https://www.w3.org/ns/activitystreams'],
     'actor': 'http://host.test/some/actor',
     'id': 'http://host.test/activities/rDYEIxcFBXKu9h_-',
     'object': {'@context': ['https://www.w3.org/ns/activitystreams'],
                'attributedTo': 'http://host.test/some/actor',
                'content': 'text',
                'id': 'http://host.test/objects/77E6MTNNaPo9Kfs5',
                'published': '2025-12-23T10:32:31Z',
                'to': ['https://www.w3.org/ns/activitystreams#Public',
                       'http://other.test/some/actor'],
                'cc': [],
                'tag': [{'type': 'Mention',
                         'href': 'http://other.test/some/actor'}],
                'type': 'Note'},
     'published': '2025-12-23T10:32:31Z',
     'to': ['https://www.w3.org/ns/activitystreams#Public',
            'http://other.test/some/actor'],
     'type': 'Create'}

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "http://host.test/some/actor",
  "id": "http://host.test/activities/2UObvjjUcUwOJIau",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "content": "text",
    "id": "http://host.test/objects/wcWT7_O8lvQgfOz0",
    "published": "2025-12-23T10:32:31Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "cc": [],
    "tag": [
      {
        "type": "Mention",
        "href": "http://other.test/some/actor"
      }
    ],
    "type": "Note"
  },
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "type": "Create"
}

Object

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "attributedTo": "http://host.test/some/actor",
  "content": "text",
  "id": "http://host.test/objects/wcWT7_O8lvQgfOz0",
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "tag": [
    {
      "type": "Mention",
      "href": "http://other.test/some/actor"
    }
  ],
  "type": "Note"
}

Example 15: without type

Comments

Validation of activity against schema failed

'type' is a required property

Failed validating 'required' in schema:
    {'additionalProperties': True,
     'description': 'Draft of a schema for ActivityPub activities',
     'properties': {'@context': {'anyOf': [{'type': 'string'},
                                           {'items': {}, 'type': 'array'}],
                                 'examples': ['https://www.w3.org/ns/activitystreams',
                                              ['https://www.w3.org/ns/activitystreams',
                                               {'Hashtag': 'as:Hashtag'}]]},
                    'id': {'description': 'id of the activity or object',
                           'examples': ['https://actor.example/some_id'],
                           'type': 'string'},
                    'to': {'description': 'Array of actors this activity '
                                          'or object is addressed to',
                           'examples': [['https://bob.example'],
                                        ['https://alice.example',
                                         'https://bob.example']],
                           'items': {'type': 'string'},
                           'minItems': 1,
                           'type': 'array'},
                    'cc': {'default': [],
                           'description': 'Array of actors this activity '
                                          'or object is carbon copied to.',
                           'examples': [['https://bob.example'],
                                        ['https://alice.example',
                                         'https://bob.example']],
                           'items': {'type': 'string'},
                           'type': 'array'},
                    'published': {'description': 'Moment of this activity '
                                                 'or object being '
                                                 'published',
                                  'format': 'date-time',
                                  'type': 'string'},
                    'type': {'description': 'Type of the activity or '
                                            'activity',
                             'examples': ['Follow',
                                          'Accept',
                                          'Create',
                                          'Undo',
                                          'Like',
                                          'Note'],
                             'type': 'string'},
                    'actor': {'description': 'id of the actor performing '
                                             'this activity',
                              'examples': ['https://actor.example/'],
                              'type': 'string'},
                    'object': {'anyOf': [{'type': 'string'},
                                         {'type': 'object'}]},
                    'target': {'anyOf': [{'type': 'string'},
                                         {'additionalProperties': True,
                                          'type': 'object'}],
                               'description': 'The target, e.g. for an Add '
                                              'activity',
                               'examples': ['https://other.example/target_id',
                                            {'content': 'meow',
                                             'type': 'Note'}]},
                    'content': {'description': 'The content used for '
                                               'example to represent the '
                                               'Emote for a like',
                                'examples': ['🐮', '❤️'],
                                'type': 'string'}},
     'required': ['@context', 'id', 'to', 'type', 'actor', 'cc'],
     'title': 'Activity',
     'type': 'object'}

On instance:
    {'@context': ['https://www.w3.org/ns/activitystreams'],
     'actor': 'http://host.test/some/actor',
     'id': 'http://host.test/activities/8Gc_UiRprPEpf8kv',
     'object': {'@context': ['https://www.w3.org/ns/activitystreams'],
                'attributedTo': 'http://host.test/some/actor',
                'content': 'text',
                'id': 'http://host.test/objects/7xO6kuLo6kdxZ1QV',
                'published': '2025-12-23T10:32:31Z',
                'to': ['https://www.w3.org/ns/activitystreams#Public',
                       'http://other.test/some/actor'],
                'cc': [],
                'tag': [{'type': 'Mention',
                         'href': 'http://other.test/some/actor'}],
                'type': 'Note'},
     'published': '2025-12-23T10:32:31Z',
     'to': ['https://www.w3.org/ns/activitystreams#Public',
            'http://other.test/some/actor'],
     'cc': []}

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "http://host.test/some/actor",
  "id": "http://host.test/activities/YcS19Og6gEck7D3p",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "content": "text",
    "id": "http://host.test/objects/5Y1Xp7eUwVCCfJam",
    "published": "2025-12-23T10:32:31Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "cc": [],
    "tag": [
      {
        "type": "Mention",
        "href": "http://other.test/some/actor"
      }
    ],
    "type": "Note"
  },
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": []
}

Object

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "attributedTo": "http://host.test/some/actor",
  "content": "text",
  "id": "http://host.test/objects/5Y1Xp7eUwVCCfJam",
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "tag": [
    {
      "type": "Mention",
      "href": "http://other.test/some/actor"
    }
  ],
  "type": "Note"
}

Example 16: as list actor

Comments

Validation of activity against schema failed

['http://host.test/some/actor'] is not of type 'string'

Failed validating 'type' in schema['properties']['actor']:
    {'description': 'id of the actor performing this activity',
     'examples': ['https://actor.example/'],
     'type': 'string'}

On instance['actor']:
    ['http://host.test/some/actor']

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": [
    "http://host.test/some/actor"
  ],
  "id": "http://host.test/activities/idxZmRcxep4SglBH",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "content": "text",
    "id": "http://host.test/objects/Lg66ydcOZfnrwBlI",
    "published": "2025-12-23T10:32:31Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "cc": [],
    "tag": [
      {
        "type": "Mention",
        "href": "http://other.test/some/actor"
      }
    ],
    "type": "Note"
  },
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "type": "Create"
}

Object

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "attributedTo": "http://host.test/some/actor",
  "content": "text",
  "id": "http://host.test/objects/Lg66ydcOZfnrwBlI",
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "tag": [
    {
      "type": "Mention",
      "href": "http://other.test/some/actor"
    }
  ],
  "type": "Note"
}

Example 17: as list published

Comments

Validation of activity against schema failed

['2025-12-23T10:32:31Z'] is not of type 'string'

Failed validating 'type' in schema['properties']['published']:
    {'description': 'Moment of this activity or object being published',
     'format': 'date-time',
     'type': 'string'}

On instance['published']:
    ['2025-12-23T10:32:31Z']

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "http://host.test/some/actor",
  "id": "http://host.test/activities/34nmSbxwcJHNz90x",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "content": "text",
    "id": "http://host.test/objects/M5OmyF3Ym9zcO23e",
    "published": "2025-12-23T10:32:31Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "cc": [],
    "tag": [
      {
        "type": "Mention",
        "href": "http://other.test/some/actor"
      }
    ],
    "type": "Note"
  },
  "published": [
    "2025-12-23T10:32:31Z"
  ],
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "type": "Create"
}

Object

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "attributedTo": "http://host.test/some/actor",
  "content": "text",
  "id": "http://host.test/objects/M5OmyF3Ym9zcO23e",
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "tag": [
    {
      "type": "Mention",
      "href": "http://other.test/some/actor"
    }
  ],
  "type": "Note"
}

Example 18: as list object

Comments

Validation of activity against schema failed

[{'@context': ['https://www.w3.org/ns/activitystreams'], 'attributedTo': 'http://host.test/some/actor', 'content': 'text', 'id': 'http://host.test/objects/ScfmeV55E4R2W52M', 'published': '2025-12-23T10:32:31Z', 'to': ['https://www.w3.org/ns/activitystreams#Public', 'http://other.test/some/actor'], 'cc': [], 'tag': [{'type': 'Mention', 'href': 'http://other.test/some/actor'}], 'type': 'Note'}] is not valid under any of the given schemas

Failed validating 'anyOf' in schema['properties']['object']:
    {'anyOf': [{'type': 'string'}, {'type': 'object'}]}

On instance['object']:
    [{'@context': ['https://www.w3.org/ns/activitystreams'],
      'attributedTo': 'http://host.test/some/actor',
      'content': 'text',
      'id': 'http://host.test/objects/ScfmeV55E4R2W52M',
      'published': '2025-12-23T10:32:31Z',
      'to': ['https://www.w3.org/ns/activitystreams#Public',
             'http://other.test/some/actor'],
      'cc': [],
      'tag': [{'type': 'Mention', 'href': 'http://other.test/some/actor'}],
      'type': 'Note'}]

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "http://host.test/some/actor",
  "id": "http://host.test/activities/JvJCU_ym2TgCpEwd",
  "object": [
    {
      "@context": [
        "https://www.w3.org/ns/activitystreams"
      ],
      "attributedTo": "http://host.test/some/actor",
      "content": "text",
      "id": "http://host.test/objects/lfrdzehJiKNUYzJn",
      "published": "2025-12-23T10:32:31Z",
      "to": [
        "https://www.w3.org/ns/activitystreams#Public",
        "http://other.test/some/actor"
      ],
      "cc": [],
      "tag": [
        {
          "type": "Mention",
          "href": "http://other.test/some/actor"
        }
      ],
      "type": "Note"
    }
  ],
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "type": "Create"
}

Object

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "attributedTo": "http://host.test/some/actor",
  "content": "text",
  "id": "http://host.test/objects/lfrdzehJiKNUYzJn",
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "tag": [
    {
      "type": "Mention",
      "href": "http://other.test/some/actor"
    }
  ],
  "type": "Note"
}

Example 19: as list type

Comments

Validation of activity against schema failed

['Create'] is not of type 'string'

Failed validating 'type' in schema['properties']['type']:
    {'description': 'Type of the activity or activity',
     'examples': ['Follow', 'Accept', 'Create', 'Undo', 'Like', 'Note'],
     'type': 'string'}

On instance['type']:
    ['Create']

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "http://host.test/some/actor",
  "id": "http://host.test/activities/qT8rqvHoGk5fZknE",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "content": "text",
    "id": "http://host.test/objects/f_iQNcVebt5e-45I",
    "published": "2025-12-23T10:32:31Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "cc": [],
    "tag": [
      {
        "type": "Mention",
        "href": "http://other.test/some/actor"
      }
    ],
    "type": "Note"
  },
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "type": [
    "Create"
  ]
}

Object

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "attributedTo": "http://host.test/some/actor",
  "content": "text",
  "id": "http://host.test/objects/f_iQNcVebt5e-45I",
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "tag": [
    {
      "type": "Mention",
      "href": "http://other.test/some/actor"
    }
  ],
  "type": "Note"
}

Example 20: embedded_actor

Comments

Validation of activity against schema failed

{'type': 'Person', 'id': 'http://host.test/some/actor', 'summary': 'this is a stub'} is not of type 'string'

Failed validating 'type' in schema['properties']['actor']:
    {'description': 'id of the actor performing this activity',
     'examples': ['https://actor.example/'],
     'type': 'string'}

On instance['actor']:
    {'type': 'Person',
     'id': 'http://host.test/some/actor',
     'summary': 'this is a stub'}

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": {
    "type": "Person",
    "id": "http://host.test/some/actor",
    "summary": "this is a stub"
  },
  "id": "http://host.test/activities/iLo5LB7W8ntROyTr",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "content": "text",
    "id": "http://host.test/objects/mh1kHFe6QdMk8o0R",
    "published": "2025-12-23T10:32:31Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "cc": [],
    "tag": [
      {
        "type": "Mention",
        "href": "http://other.test/some/actor"
      }
    ],
    "type": "Note"
  },
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "type": "Create"
}

Object

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "attributedTo": "http://host.test/some/actor",
  "content": "text",
  "id": "http://host.test/objects/mh1kHFe6QdMk8o0R",
  "published": "2025-12-23T10:32:31Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "cc": [],
  "tag": [
    {
      "type": "Mention",
      "href": "http://other.test/some/actor"
    }
  ],
  "type": "Note"
}