Mentions

Mentions are discussed in this section of ActivityStreams.

The big difference on if mentions are parsed are currently a result of if the value in href can be resolved by the application being tested.

In the support table parsed means that the activity could be parsed, but the mention was discarded. A ❌ in the support table means that the entire message has failed to parse.

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/RCaDEsp2S5A",
  "published": "2025-03-07T12:41:41Z",
  "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/hOObmE6yncU",
    "published": "2025-03-07T12:41:41Z",
    "content": "basic mention; mention as list of dictionaries",
    "tag": [
      {
        "type": "Mention",
        "name": "@actor@test_server",
        "href": "http://pasture-one-actor/actor"
      }
    ],
    "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/gdfabm3B2PI",
  "published": "2025-03-07T12:41:54Z",
  "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/wcNGxzXYkis",
    "published": "2025-03-07T12:41:54Z",
    "content": "text @actor@pasture-one-actor; mention as dictionary",
    "tag": {
      "type": "Mention",
      "name": "@actor@test_server",
      "href": "http://pasture-one-actor/actor"
    },
    "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/1mw8Voau1gk",
  "published": "2025-03-07T12:42:07Z",
  "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/o806bjXrSb4",
    "published": "2025-03-07T12:42:07Z",
    "content": "unrelated text",
    "tag": {
      "type": "Mention",
      "name": "something something",
      "href": "http://pasture-one-actor/actor"
    },
    "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/92tQwBkNJP8",
  "published": "2025-03-07T12:42:20Z",
  "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/YfDfQoGdPnE",
    "published": "2025-03-07T12:42:20Z",
    "content": "Missing Name @actor@pasture-one-actor",
    "tag": {
      "type": "Mention",
      "href": "http://pasture-one-actor/actor"
    },
    "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/fVErtf9V1p8",
  "published": "2025-03-07T12:42:34Z",
  "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/Cuqee9iK_dA",
    "published": "2025-03-07T12:42:34Z",
    "content": "text",
    "tag": {
      "type": "Mention",
      "name": "@the_milkman@mastodon.social",
      "href": "https://mastodon.social/users/the_milkman"
    },
    "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/OWNuRMieLB4",
  "published": "2025-03-07T12:42:47Z",
  "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/dLkDadQYE0g",
    "published": "2025-03-07T12:42:47Z",
    "content": "text",
    "tag": {
      "type": "Mention",
      "name": "@dummy@example",
      "href": "https://dummy.example"
    },
    "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/jWwhfdYcMAI",
  "published": "2025-03-07T12:43:00Z",
  "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/h8KCnfGfc1E",
    "published": "2025-03-07T12:43:00Z",
    "content": "text",
    "tag": {
      "type": "Mention",
      "name": "@test_actor@test_server",
      "href": "http://test_actor"
    },
    "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/TRm-LM5HaS0",
  "published": "2025-03-07T12:43:13Z",
  "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/HWp9KrRsNAc",
    "published": "2025-03-07T12:43:13Z",
    "content": "text",
    "tag": {
      "type": "as:Mention",
      "name": "yay",
      "href": "http://pasture-one-actor/actor"
    },
    "cc": []
  }
}