Variations of inReplyTo

The property is defined here. The goal of this support table is to show how applications react to inReplyTo containing a wide variation of allowed objects. As Fediverse applications generally only give one the option to reply to a single element, the lacking support should not be surprising.

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": [
    "http://sharkey/users/ac7xq6i3epan0003",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "id": "http://pasture-one-actor/activity/QAZJlLXXFc8",
  "published": "2025-09-03T19:30:56Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://sharkey/users/ac7xq6i3epan0003"
    ],
    "id": "http://pasture-one-actor/object/9BZ2_w-rWec",
    "published": "2025-09-03T19:30:56Z",
    "content": "valid uri",
    "inReplyTo": "http://pasture-one-actor/assets/note1.jsonap"
  }
}

sharkey

{
  "id": "ac7xsn7kfewz0020",
  "uri": "http://pasture-one-actor/object/9BZ2_w-rWec",
  "url": "http://pasture-one-actor/object/9BZ2_w-rWec",
  "account": {
    "id": "ac7xrs1dfewz0004",
    "username": "actor",
    "acct": "actor@pasture-one-actor",
    "fqn": "actor@pasture-one-actor",
    "display_name": "Test Actor",
    "locked": false,
    "created_at": "2025-09-03T19:30:15.601Z",
    "followers_count": 0,
    "following_count": 0,
    "statuses_count": 60,
    "note": "",
    "url": "http://pasture-one-actor/actor",
    "uri": "http://pasture-one-actor/actor",
    "avatar": "https://dev.joinsharkey.org/static-assets/avatar.png",
    "avatar_static": "https://dev.joinsharkey.org/static-assets/avatar.png",
    "header": "https://dev.joinsharkey.org/static-assets/transparent.png",
    "header_static": "https://dev.joinsharkey.org/static-assets/transparent.png",
    "emojis": [],
    "moved": null,
    "fields": [],
    "bot": false,
    "discoverable": true,
    "noindex": false,
    "group": null,
    "suspended": false,
    "limited": false
  },
  "in_reply_to_id": "9o5nesfcfewz001z",
  "in_reply_to_account_id": "ac7xrs1dfewz0004",
  "reblog": null,
  "content": "<p>valid uri</p>",
  "content_type": "text/x.misskeymarkdown",
  "text": "valid uri",
  "created_at": "2025-09-03T19:30:56.000Z",
  "edited_at": null,
  "emojis": [],
  "replies_count": 0,
  "reblogs_count": 0,
  "favourites_count": 0,
  "reblogged": false,
  "favourited": false,
  "muted": false,
  "sensitive": false,
  "spoiler_text": "",
  "visibility": "public",
  "media_attachments": [],
  "mentions": [],
  "tags": [],
  "card": null,
  "poll": null,
  "application": null,
  "language": null,
  "pinned": false,
  "bookmarked": false,
  "quote": null,
  "reactions": []
}

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": [
    "http://sharkey/users/ac7xq6i3epan0003",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "id": "http://pasture-one-actor/activity/x_QY7nrjM-g",
  "published": "2025-09-03T19:30:57Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://sharkey/users/ac7xq6i3epan0003"
    ],
    "id": "http://pasture-one-actor/object/lpH_82a7-CY",
    "published": "2025-09-03T19:30:57Z",
    "content": "invalid uri",
    "inReplyTo": "http://invalid.example/"
  }
}

no result

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": [
    "http://sharkey/users/ac7xq6i3epan0003",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "id": "http://pasture-one-actor/activity/Wx4peGxHnG4",
  "published": "2025-09-03T19:31:09Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://sharkey/users/ac7xq6i3epan0003"
    ],
    "id": "http://pasture-one-actor/object/FZyc5FXVrLM",
    "published": "2025-09-03T19:31:09Z",
    "content": "list",
    "inReplyTo": [
      "http://pasture-one-actor/assets/note1.jsonap"
    ]
  }
}

sharkey

{
  "id": "ac7xsx8ofewz0021",
  "uri": "http://pasture-one-actor/object/FZyc5FXVrLM",
  "url": "http://pasture-one-actor/object/FZyc5FXVrLM",
  "account": {
    "id": "ac7xrs1dfewz0004",
    "username": "actor",
    "acct": "actor@pasture-one-actor",
    "fqn": "actor@pasture-one-actor",
    "display_name": "Test Actor",
    "locked": false,
    "created_at": "2025-09-03T19:30:15.601Z",
    "followers_count": 0,
    "following_count": 0,
    "statuses_count": 61,
    "note": "",
    "url": "http://pasture-one-actor/actor",
    "uri": "http://pasture-one-actor/actor",
    "avatar": "https://dev.joinsharkey.org/static-assets/avatar.png",
    "avatar_static": "https://dev.joinsharkey.org/static-assets/avatar.png",
    "header": "https://dev.joinsharkey.org/static-assets/transparent.png",
    "header_static": "https://dev.joinsharkey.org/static-assets/transparent.png",
    "emojis": [],
    "moved": null,
    "fields": [],
    "bot": false,
    "discoverable": true,
    "noindex": false,
    "group": null,
    "suspended": false,
    "limited": false
  },
  "in_reply_to_id": "9o5nesfcfewz001z",
  "in_reply_to_account_id": "ac7xrs1dfewz0004",
  "reblog": null,
  "content": "<p>list</p>",
  "content_type": "text/x.misskeymarkdown",
  "text": "list",
  "created_at": "2025-09-03T19:31:09.000Z",
  "edited_at": null,
  "emojis": [],
  "replies_count": 0,
  "reblogs_count": 0,
  "favourites_count": 0,
  "reblogged": false,
  "favourited": false,
  "muted": false,
  "sensitive": false,
  "spoiler_text": "",
  "visibility": "public",
  "media_attachments": [],
  "mentions": [],
  "tags": [],
  "card": null,
  "poll": null,
  "application": null,
  "language": null,
  "pinned": false,
  "bookmarked": false,
  "quote": null,
  "reactions": []
}

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": [
    "http://sharkey/users/ac7xq6i3epan0003",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "id": "http://pasture-one-actor/activity/Jlaqaa2wpqs",
  "published": "2025-09-03T19:31:10Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://sharkey/users/ac7xq6i3epan0003"
    ],
    "id": "http://pasture-one-actor/object/TKWjZ-5NB4U",
    "published": "2025-09-03T19:31:10Z",
    "content": "Link in inReplyTo",
    "inReplyTo": {
      "type": "Link",
      "href": "http://pasture-one-actor/assets/note1.jsonap"
    }
  }
}

no result

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": [
    "http://sharkey/users/ac7xq6i3epan0003",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "id": "http://pasture-one-actor/activity/EA6Kn-DsOx0",
  "published": "2025-09-03T19:31:22Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://sharkey/users/ac7xq6i3epan0003"
    ],
    "id": "http://pasture-one-actor/object/u2rc4C5YC2o",
    "published": "2025-09-03T19:31:22Z",
    "content": "two elements in inReplyTo",
    "inReplyTo": [
      "http://pasture-one-actor/assets/note1.jsonap",
      "http://pasture-one-actor/assets/note2.jsonap"
    ]
  }
}

sharkey

{
  "id": "ac7xt79sfewz0022",
  "uri": "http://pasture-one-actor/object/u2rc4C5YC2o",
  "url": "http://pasture-one-actor/object/u2rc4C5YC2o",
  "account": {
    "id": "ac7xrs1dfewz0004",
    "username": "actor",
    "acct": "actor@pasture-one-actor",
    "fqn": "actor@pasture-one-actor",
    "display_name": "Test Actor",
    "locked": false,
    "created_at": "2025-09-03T19:30:15.601Z",
    "followers_count": 0,
    "following_count": 0,
    "statuses_count": 62,
    "note": "",
    "url": "http://pasture-one-actor/actor",
    "uri": "http://pasture-one-actor/actor",
    "avatar": "https://dev.joinsharkey.org/static-assets/avatar.png",
    "avatar_static": "https://dev.joinsharkey.org/static-assets/avatar.png",
    "header": "https://dev.joinsharkey.org/static-assets/transparent.png",
    "header_static": "https://dev.joinsharkey.org/static-assets/transparent.png",
    "emojis": [],
    "moved": null,
    "fields": [],
    "bot": false,
    "discoverable": true,
    "noindex": false,
    "group": null,
    "suspended": false,
    "limited": false
  },
  "in_reply_to_id": "9o5nesfcfewz001z",
  "in_reply_to_account_id": "ac7xrs1dfewz0004",
  "reblog": null,
  "content": "<p>two elements in inReplyTo</p>",
  "content_type": "text/x.misskeymarkdown",
  "text": "two elements in inReplyTo",
  "created_at": "2025-09-03T19:31:22.000Z",
  "edited_at": null,
  "emojis": [],
  "replies_count": 0,
  "reblogs_count": 0,
  "favourites_count": 0,
  "reblogged": false,
  "favourited": false,
  "muted": false,
  "sensitive": false,
  "spoiler_text": "",
  "visibility": "public",
  "media_attachments": [],
  "mentions": [],
  "tags": [],
  "card": null,
  "poll": null,
  "application": null,
  "language": null,
  "pinned": false,
  "bookmarked": false,
  "quote": null,
  "reactions": []
}

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": [
    "http://sharkey/users/ac7xq6i3epan0003",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "id": "http://pasture-one-actor/activity/0PmJKCOUe6A",
  "published": "2025-09-03T19:31:23Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://sharkey/users/ac7xq6i3epan0003"
    ],
    "id": "http://pasture-one-actor/object/paWmpBbcrto",
    "published": "2025-09-03T19:31:23Z",
    "content": "collection",
    "inReplyTo": {
      "type": "Collection",
      "items": [
        "http://pasture-one-actor/actor"
      ]
    }
  }
}

no result

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": [
    "http://sharkey/users/ac7xq6i3epan0003",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "id": "http://pasture-one-actor/activity/e8Fomf3VbUE",
  "published": "2025-09-03T19:31:35Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://sharkey/users/ac7xq6i3epan0003"
    ],
    "id": "http://pasture-one-actor/object/UU1QMeDl6FQ",
    "published": "2025-09-03T19:31:35Z",
    "content": "embedded note",
    "inReplyTo": {
      "@context": "https://www.w3.org/ns/activitystreams",
      "type": "Note",
      "id": "http://pasture-one-actor/assets/note1.jsonap",
      "to": [
        "as:Public"
      ],
      "attributedTo": "http://pasture-one-actor/actor",
      "content": "One",
      "published": "2024-01-06T13:11:45Z"
    }
  }
}

sharkey

{
  "id": "ac7xthawfewz0023",
  "uri": "http://pasture-one-actor/object/UU1QMeDl6FQ",
  "url": "http://pasture-one-actor/object/UU1QMeDl6FQ",
  "account": {
    "id": "ac7xrs1dfewz0004",
    "username": "actor",
    "acct": "actor@pasture-one-actor",
    "fqn": "actor@pasture-one-actor",
    "display_name": "Test Actor",
    "locked": false,
    "created_at": "2025-09-03T19:30:15.601Z",
    "followers_count": 0,
    "following_count": 0,
    "statuses_count": 63,
    "note": "",
    "url": "http://pasture-one-actor/actor",
    "uri": "http://pasture-one-actor/actor",
    "avatar": "https://dev.joinsharkey.org/static-assets/avatar.png",
    "avatar_static": "https://dev.joinsharkey.org/static-assets/avatar.png",
    "header": "https://dev.joinsharkey.org/static-assets/transparent.png",
    "header_static": "https://dev.joinsharkey.org/static-assets/transparent.png",
    "emojis": [],
    "moved": null,
    "fields": [],
    "bot": false,
    "discoverable": true,
    "noindex": false,
    "group": null,
    "suspended": false,
    "limited": false
  },
  "in_reply_to_id": "9o5nesfcfewz001z",
  "in_reply_to_account_id": "ac7xrs1dfewz0004",
  "reblog": null,
  "content": "<p>embedded note</p>",
  "content_type": "text/x.misskeymarkdown",
  "text": "embedded note",
  "created_at": "2025-09-03T19:31:35.000Z",
  "edited_at": null,
  "emojis": [],
  "replies_count": 0,
  "reblogs_count": 0,
  "favourites_count": 0,
  "reblogged": false,
  "favourited": false,
  "muted": false,
  "sensitive": false,
  "spoiler_text": "",
  "visibility": "public",
  "media_attachments": [],
  "mentions": [],
  "tags": [],
  "card": null,
  "poll": null,
  "application": null,
  "language": null,
  "pinned": false,
  "bookmarked": false,
  "quote": null,
  "reactions": []
}