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HTML tags in summary

Here we analyze, which types of HTML tags are allowed inside the summary field.

As the content field, the [summary field(https://www.w3.org/TR/activitystreams-vocabulary/#dfn-summary) is described as

A natural language summarization of the object encoded as HTML.

This is a somewhat petulant table as most Fediverse applications treat the summary field as a plain text content warning.

Sanitizing fields is desired behavior as seen in Section B.10 of ActivityPub.

Examples

Example 1

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/NA7x_WSkPZk",
  "published": "2025-03-07T12:58:37Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/eu7bI8ns2Ok",
    "published": "2025-03-07T12:58:37Z",
    "summary": "<b>bold</b>",
    "content": "See summary",
    "cc": []
  }
}

Example 2

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/S6Y5JV-YXls",
  "published": "2025-03-07T12:58:51Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/4lzt1NkC8ds",
    "published": "2025-03-07T12:58:51Z",
    "summary": "<strong>strong</strong>",
    "content": "See summary",
    "cc": []
  }
}

Example 3

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/ar88p85ilJk",
  "published": "2025-03-07T12:59:04Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/KtET0WGbFvw",
    "published": "2025-03-07T12:59:04Z",
    "summary": "<i>italic</i>",
    "content": "See summary",
    "cc": []
  }
}

Example 4

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/uI8e_8imWqY",
  "published": "2025-03-07T12:59:17Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/BY1oH7a1FJs",
    "published": "2025-03-07T12:59:17Z",
    "summary": "<i>italic with.</i> See <a href=\"https://codeberg.org/helge/funfedidev/issues/142\">Issue 142</a>",
    "content": "See summary",
    "cc": []
  }
}

Example 5

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/ydA-rpJ8sXQ",
  "published": "2025-03-07T12:59:30Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/Pol5e18dDu8",
    "published": "2025-03-07T12:59:30Z",
    "summary": "<em>emphasis</em>",
    "content": "See summary",
    "cc": []
  }
}

Example 6

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/L-fFmdHtAPg",
  "published": "2025-03-07T12:59:44Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/wS3dOvl-IPM",
    "published": "2025-03-07T12:59:44Z",
    "summary": "<del>old</del><ins>new</ins>",
    "content": "See summary",
    "cc": []
  }
}

Example 7

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/GCMHRZ2WWsk",
  "published": "2025-03-07T12:59:57Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/s50_dmJ1Eec",
    "published": "2025-03-07T12:59:57Z",
    "summary": "<s>stricken</s>",
    "content": "See summary",
    "cc": []
  }
}

Example 8

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/fFzq9b0mpRE",
  "published": "2025-03-07T13:00:10Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/7z6EK3Kxddg",
    "published": "2025-03-07T13:00:10Z",
    "summary": "<mark>mark</mark>",
    "content": "See summary",
    "cc": []
  }
}

Example 9

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/_-wvIlRDjII",
  "published": "2025-03-07T13:00:23Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/SquOsC-lFwM",
    "published": "2025-03-07T13:00:23Z",
    "summary": "find <var>x</var> (a variable)",
    "content": "See summary",
    "cc": []
  }
}

Example 10

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/naDvmY8ZLOA",
  "published": "2025-03-07T13:00:36Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/S0X4Hq9S2Nw",
    "published": "2025-03-07T13:00:36Z",
    "summary": "<ol><li>ordered</li></ol>",
    "content": "See summary",
    "cc": []
  }
}

Example 11

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/vP3J9P-sBEI",
  "published": "2025-03-07T13:00:50Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/QZXSBn0CiLA",
    "published": "2025-03-07T13:00:50Z",
    "summary": "<ul><li>unordered</li></ul>",
    "content": "See summary",
    "cc": []
  }
}

Example 12

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/3rc7eC6ZveA",
  "published": "2025-03-07T13:01:03Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/ghwyMn4GC-s",
    "published": "2025-03-07T13:01:03Z",
    "summary": "<h1>h1</h1>",
    "content": "See summary",
    "cc": []
  }
}

Example 13

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/pge0UB-ifo0",
  "published": "2025-03-07T13:01:16Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/IkXrbqGdRyU",
    "published": "2025-03-07T13:01:16Z",
    "summary": "<h2>h2</h2>",
    "content": "See summary",
    "cc": []
  }
}

Example 14

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/KqZKjdVfqI8",
  "published": "2025-03-07T13:01:29Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/0mYHSyBtYQ8",
    "published": "2025-03-07T13:01:29Z",
    "summary": "<h3>h3</h3>",
    "content": "See summary",
    "cc": []
  }
}

Example 15

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/Uz0RisArgs4",
  "published": "2025-03-07T13:01:42Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/zlp25Q1JVj4",
    "published": "2025-03-07T13:01:42Z",
    "summary": "<h4>h4</h4>",
    "content": "See summary",
    "cc": []
  }
}

Example 16

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/mUoDwCwFTH8",
  "published": "2025-03-07T13:01:56Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/GNyliQNmGgA",
    "published": "2025-03-07T13:01:56Z",
    "summary": "<h5>h5</h5>",
    "content": "See summary",
    "cc": []
  }
}

Example 17

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/QSg6Ld5rLpE",
  "published": "2025-03-07T13:02:09Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/CzZnGUpsIZU",
    "published": "2025-03-07T13:02:09Z",
    "summary": "<h1>h1</h1><h2>h2</h2>",
    "content": "See summary",
    "cc": []
  }
}

Example 18

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/yZdwoW7b6co",
  "published": "2025-03-07T13:02:22Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/0GPeuSwDqE0",
    "published": "2025-03-07T13:02:22Z",
    "summary": "<code>code</code>",
    "content": "See summary",
    "cc": []
  }
}

Example 19

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/zgFjeAfqfOM",
  "published": "2025-03-07T13:02:35Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/tLPZy7d1CjM",
    "published": "2025-03-07T13:02:35Z",
    "summary": "<pre>pre</pre>",
    "content": "See summary",
    "cc": []
  }
}

Example 20

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/eaUmhhh__yw",
  "published": "2025-03-07T13:02:48Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/VAvMI6VJ63g",
    "published": "2025-03-07T13:02:48Z",
    "summary": "<blockquote>blockquote</blockquote>",
    "content": "See summary",
    "cc": []
  }
}

Example 21

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/uAJAWvYgsls",
  "published": "2025-03-07T13:03:01Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/kf1rY71wBYk",
    "published": "2025-03-07T13:03:01Z",
    "summary": "line<br/>break",
    "content": "See summary",
    "cc": []
  }
}

Example 22

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/HCEd5JltgVg",
  "published": "2025-03-07T13:03:14Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/7e4UREX26pc",
    "published": "2025-03-07T13:03:14Z",
    "summary": "<p>paragraph</p>",
    "content": "See summary",
    "cc": []
  }
}

Example 23

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/1lQZL4eKg2o",
  "published": "2025-03-07T13:03:28Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/K_Zfabipc4A",
    "published": "2025-03-07T13:03:28Z",
    "summary": "<small>small</small>",
    "content": "See summary",
    "cc": []
  }
}

Example 24

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/AacLtFoENAQ",
  "published": "2025-03-07T13:03:41Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/OiDXXeD3LCM",
    "published": "2025-03-07T13:03:41Z",
    "summary": "<sup>sup</sup>",
    "content": "See summary",
    "cc": []
  }
}

Example 25

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/8OzHCOEHhCQ",
  "published": "2025-03-07T13:03:54Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/yQxTT3zs3_4",
    "published": "2025-03-07T13:03:54Z",
    "summary": "<sub>sub</sub>",
    "content": "See summary",
    "cc": []
  }
}

Example 26

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/QTGazr2-RxI",
  "published": "2025-03-07T13:04:07Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/c_Km3Tztw1Y",
    "published": "2025-03-07T13:04:07Z",
    "summary": "<a href='https://funfedi.dev'>funfedi</a>",
    "content": "See summary",
    "cc": []
  }
}

Example 27

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/IKIlnZ5Lg7M",
  "published": "2025-03-07T13:04:20Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/x3TH7yVrlyk",
    "published": "2025-03-07T13:04:20Z",
    "summary": "<script>alert('hi');</script>",
    "content": "See summary",
    "cc": []
  }
}

Example 28

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/SuXJpENeLYQ",
  "published": "2025-03-07T13:04:34Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/xAEW9q1VB4Q",
    "published": "2025-03-07T13:04:34Z",
    "summary": "<img src=\"http://pasture-one-actor/assets/nlnet.png\" alt=\"NLNET Logo\" />",
    "content": "See summary",
    "cc": []
  }
}

Example 29

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/Tm62yYBScjg",
  "published": "2025-03-07T13:04:47Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/44llnaCtz7E",
    "published": "2025-03-07T13:04:47Z",
    "summary": "wbr: Fernstra\u00dfen<wbr />bau<wbr />privat<wbr />finanzierungs<wbr />gesetz",
    "content": "See summary",
    "cc": []
  }
}

Example 30

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://mbin/u/oscar"
  ],
  "id": "http://pasture-one-actor/actor/Bf4TD2fNH_U",
  "published": "2025-03-07T13:05:00Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://mbin/u/oscar"
    ],
    "id": "http://pasture-one-actor/actor/SWmeBy-gg3M",
    "published": "2025-03-07T13:05:00Z",
    "summary": "Audio <audio controls src=\"http://pasture-one-actor/assets/cow_moo.mp3\"></audio>",
    "content": "See summary",
    "cc": []
  }
}