Necessary properties for notes

Example 1: without attributedTo

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "http://host.test/some/actor",
  "cc": [],
  "id": "http://host.test/activities/1UcxK2LyjzMLN8mD",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "cc": [],
    "content": "text",
    "id": "http://host.test/objects/UDvLvxs8_PDxMfkq",
    "published": "2026-04-08T07:53:32Z",
    "tag": [
      {
        "href": "http://other.test/some/actor",
        "type": "Mention"
      }
    ],
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "type": "Note"
  },
  "published": "2026-04-08T07:53:32Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "type": "Create"
}

Object

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "cc": [],
  "content": "text",
  "id": "http://host.test/objects/UDvLvxs8_PDxMfkq",
  "published": "2026-04-08T07:53:32Z",
  "tag": [
    {
      "href": "http://other.test/some/actor",
      "type": "Mention"
    }
  ],
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "type": "Note"
}

Example 2: without cc

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "http://host.test/some/actor",
  "cc": [],
  "id": "http://host.test/activities/I2UBHVN_jI01ptEB",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "content": "text",
    "id": "http://host.test/objects/YJ7jsanScf1D5d-y",
    "published": "2026-04-08T07:53:32Z",
    "tag": [
      {
        "href": "http://other.test/some/actor",
        "type": "Mention"
      }
    ],
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "type": "Note"
  },
  "published": "2026-04-08T07:53:32Z",
  "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/YJ7jsanScf1D5d-y",
  "published": "2026-04-08T07:53:32Z",
  "tag": [
    {
      "href": "http://other.test/some/actor",
      "type": "Mention"
    }
  ],
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "type": "Note"
}

Example 3: without type

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "http://host.test/some/actor",
  "cc": [],
  "id": "http://host.test/activities/AA0OCWONw-hXJSKr",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "cc": [],
    "content": "text",
    "id": "http://host.test/objects/_pFSgtUAVWCM70YL",
    "published": "2026-04-08T07:53:32Z",
    "tag": [
      {
        "href": "http://other.test/some/actor",
        "type": "Mention"
      }
    ],
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ]
  },
  "published": "2026-04-08T07:53:32Z",
  "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",
  "cc": [],
  "content": "text",
  "id": "http://host.test/objects/_pFSgtUAVWCM70YL",
  "published": "2026-04-08T07:53:32Z",
  "tag": [
    {
      "href": "http://other.test/some/actor",
      "type": "Mention"
    }
  ],
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ]
}

Example 4: without published

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "http://host.test/some/actor",
  "cc": [],
  "id": "http://host.test/activities/8-NIPziE780EqC7H",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "cc": [],
    "content": "text",
    "id": "http://host.test/objects/yJ1WCq30TESW14Ky",
    "tag": [
      {
        "href": "http://other.test/some/actor",
        "type": "Mention"
      }
    ],
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "type": "Note"
  },
  "published": "2026-04-08T07:53:32Z",
  "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",
  "cc": [],
  "content": "text",
  "id": "http://host.test/objects/yJ1WCq30TESW14Ky",
  "tag": [
    {
      "href": "http://other.test/some/actor",
      "type": "Mention"
    }
  ],
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "type": "Note"
}

Example 5: without content

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "http://host.test/some/actor",
  "cc": [],
  "id": "http://host.test/activities/8TMgyNnmkqgtxifJ",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "cc": [],
    "id": "http://host.test/objects/3ApIjkilfp1Vbmh-",
    "published": "2026-04-08T07:53:32Z",
    "tag": [
      {
        "href": "http://other.test/some/actor",
        "type": "Mention"
      }
    ],
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "type": "Note"
  },
  "published": "2026-04-08T07:53:32Z",
  "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",
  "cc": [],
  "id": "http://host.test/objects/3ApIjkilfp1Vbmh-",
  "published": "2026-04-08T07:53:32Z",
  "tag": [
    {
      "href": "http://other.test/some/actor",
      "type": "Mention"
    }
  ],
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "type": "Note"
}

Example 6: without tag

Activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "http://host.test/some/actor",
  "cc": [],
  "id": "http://host.test/activities/J3QkE0YFFhezJxQP",
  "object": {
    "@context": [
      "https://www.w3.org/ns/activitystreams"
    ],
    "attributedTo": "http://host.test/some/actor",
    "cc": [],
    "content": "text",
    "id": "http://host.test/objects/tLnAM8S2x-ZnUUW0",
    "published": "2026-04-08T07:53:32Z",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://other.test/some/actor"
    ],
    "type": "Note"
  },
  "published": "2026-04-08T07:53:32Z",
  "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",
  "cc": [],
  "content": "text",
  "id": "http://host.test/objects/tLnAM8S2x-ZnUUW0",
  "published": "2026-04-08T07:53:32Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://other.test/some/actor"
  ],
  "type": "Note"
}