Hashtags and JSON-LD¶
The examples here are various variations of creating the Hashtag element in the tag list. These variations can be useful in understanding how strict an application sees JSON-LD.
Hashtags are a good illustration of JSON-LD parsing as Hashtag is not part of the ActivityStreams vocabulary.
All examples except the first are questionable, and probably should not
be used when publishing to the Fediverse. The examples marked with
⚠️ are expected to fail with a JSON-LD parser. The examples using
as:Hashtag are expected to fail with a JSON only parser.
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://friendica/profile/friend"
],
"id": "http://pasture-one-actor/activity/bzAObWI1III",
"published": "2025-09-01T09:31:22Z",
"object": {
"type": "Note",
"attributedTo": "http://pasture-one-actor/actor",
"to": [
"https://www.w3.org/ns/activitystreams#Public",
"http://friendica/profile/friend"
],
"id": "http://pasture-one-actor/object/J-T23oR9C0w",
"published": "2025-09-01T09:31:22Z",
"content": "text",
"tag": {
"type": "Hashtag",
"name": "#test"
}
}
}
friendica
{
"id": "17",
"created_at": "2025-09-01T09:31:22.000Z",
"edited_at": null,
"in_reply_to_id": null,
"in_reply_to_status": null,
"in_reply_to_account_id": null,
"sensitive": false,
"spoiler_text": "",
"visibility": "public",
"language": "af",
"uri": "http://pasture-one-actor/object/J-T23oR9C0w",
"url": "http://pasture-one-actor/object/J-T23oR9C0w",
"replies_count": 0,
"reblogs_count": 0,
"favourites_count": 0,
"favourited": false,
"reblogged": false,
"muted": false,
"bookmarked": false,
"content": "text",
"reblog": null,
"quote": null,
"application": {
"name": "ActivityPub",
"vapid_key": null
},
"account": {
"id": "5",
"username": "actor",
"acct": "",
"display_name": "Test Actor",
"locked": false,
"bot": false,
"discoverable": true,
"group": false,
"created_at": "2025-09-01T09:31:08.000Z",
"note": "",
"url": "http://pasture-one-actor/actor",
"avatar": "http://friendica/photo/contact/320/0700725d-72c7be8a-36a431191785fdc7?ts=1756719068",
"avatar_static": "http://friendica/photo/contact/320/0700725d-72c7be8a-36a431191785fdc7?ts=1756719068&static=1",
"header": "http://friendica/photo/header/0700725d-72c7be8a-36a431191785fdc7?ts=1756719068",
"header_static": "http://friendica/photo/header/0700725d-72c7be8a-36a431191785fdc7?ts=1756719068&static=1",
"followers_count": 0,
"following_count": 0,
"statuses_count": 0,
"last_status_at": "2025-09-01T00:00:00.000Z",
"emojis": [],
"fields": []
},
"media_attachments": [],
"mentions": [],
"tags": [
{
"name": "test",
"url": "http://friendica/search?tag=test",
"history": [],
"following": false
}
],
"emojis": [],
"card": null,
"poll": null,
"friendica": {
"title": "",
"changed_at": "2025-09-01T09:31:22.000Z",
"commented_at": "2025-09-01T09:31:22.000Z",
"received_at": "2025-09-01T09:31:22.000Z",
"delivery_data": {
"delivery_queue_count": null,
"delivery_queue_done": null,
"delivery_queue_failed": null
},
"dislikes_count": 0,
"disliked": false,
"network": "ActivityPub",
"platform": "ActivityPub",
"version": "",
"sitename": "",
"visibility": {
"allow_cid": [],
"deny_cid": [],
"allow_gid": [],
"deny_gid": []
},
"content": "text"
}
}
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://friendica/profile/friend"
],
"id": "http://pasture-one-actor/activity/9u8s_UQRHvQ",
"published": "2025-09-01T09:31:23Z",
"object": {
"type": "Note",
"attributedTo": "http://pasture-one-actor/actor",
"to": [
"https://www.w3.org/ns/activitystreams#Public",
"http://friendica/profile/friend"
],
"id": "http://pasture-one-actor/object/9EJwFKydDvM",
"published": "2025-09-01T09:31:23Z",
"content": "using as:Hashtag",
"tag": {
"type": "as:Hashtag",
"name": "#test"
}
}
}
friendica
{
"id": "18",
"created_at": "2025-09-01T09:31:23.000Z",
"edited_at": null,
"in_reply_to_id": null,
"in_reply_to_status": null,
"in_reply_to_account_id": null,
"sensitive": false,
"spoiler_text": "",
"visibility": "public",
"language": "jv",
"uri": "http://pasture-one-actor/object/9EJwFKydDvM",
"url": "http://pasture-one-actor/object/9EJwFKydDvM",
"replies_count": 0,
"reblogs_count": 0,
"favourites_count": 0,
"favourited": false,
"reblogged": false,
"muted": false,
"bookmarked": false,
"content": "using as:Hashtag",
"reblog": null,
"quote": null,
"application": {
"name": "ActivityPub",
"vapid_key": null
},
"account": {
"id": "5",
"username": "actor",
"acct": "",
"display_name": "Test Actor",
"locked": false,
"bot": false,
"discoverable": true,
"group": false,
"created_at": "2025-09-01T09:31:08.000Z",
"note": "",
"url": "http://pasture-one-actor/actor",
"avatar": "http://friendica/photo/contact/320/0700725d-72c7be8a-36a431191785fdc7?ts=1756719068",
"avatar_static": "http://friendica/photo/contact/320/0700725d-72c7be8a-36a431191785fdc7?ts=1756719068&static=1",
"header": "http://friendica/photo/header/0700725d-72c7be8a-36a431191785fdc7?ts=1756719068",
"header_static": "http://friendica/photo/header/0700725d-72c7be8a-36a431191785fdc7?ts=1756719068&static=1",
"followers_count": 0,
"following_count": 0,
"statuses_count": 0,
"last_status_at": "2025-09-01T00:00:00.000Z",
"emojis": [],
"fields": []
},
"media_attachments": [],
"mentions": [],
"tags": [
{
"name": "test",
"url": "http://friendica/search?tag=test",
"history": [],
"following": false
}
],
"emojis": [],
"card": null,
"poll": null,
"friendica": {
"title": "",
"changed_at": "2025-09-01T09:31:24.000Z",
"commented_at": "2025-09-01T09:31:24.000Z",
"received_at": "2025-09-01T09:31:23.000Z",
"delivery_data": {
"delivery_queue_count": null,
"delivery_queue_done": null,
"delivery_queue_failed": null
},
"dislikes_count": 0,
"disliked": false,
"network": "ActivityPub",
"platform": "ActivityPub",
"version": "",
"sitename": "",
"visibility": {
"allow_cid": [],
"deny_cid": [],
"allow_gid": [],
"deny_gid": []
},
"content": "using as:Hashtag"
}
}
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://friendica/profile/friend"
],
"id": "http://pasture-one-actor/activity/2hbP9U2muTE",
"published": "2025-09-01T09:31:24Z",
"object": {
"type": "Note",
"attributedTo": "http://pasture-one-actor/actor",
"to": [
"https://www.w3.org/ns/activitystreams#Public",
"http://friendica/profile/friend"
],
"id": "http://pasture-one-actor/object/89e4HFwDpPA",
"published": "2025-09-01T09:31:24Z",
"content": "no type \u26a0\ufe0f ",
"tag": {
"name": "#test"
}
}
}
friendica
{
"id": "19",
"created_at": "2025-09-01T09:31:24.000Z",
"edited_at": null,
"in_reply_to_id": null,
"in_reply_to_status": null,
"in_reply_to_account_id": null,
"sensitive": false,
"spoiler_text": "",
"visibility": "public",
"language": "en",
"uri": "http://pasture-one-actor/object/89e4HFwDpPA",
"url": "http://pasture-one-actor/object/89e4HFwDpPA",
"replies_count": 0,
"reblogs_count": 0,
"favourites_count": 0,
"favourited": false,
"reblogged": false,
"muted": false,
"bookmarked": false,
"content": "no type \u26a0\ufe0f",
"reblog": null,
"quote": null,
"application": {
"name": "ActivityPub",
"vapid_key": null
},
"account": {
"id": "5",
"username": "actor",
"acct": "",
"display_name": "Test Actor",
"locked": false,
"bot": false,
"discoverable": true,
"group": false,
"created_at": "2025-09-01T09:31:08.000Z",
"note": "",
"url": "http://pasture-one-actor/actor",
"avatar": "http://friendica/photo/contact/320/0700725d-72c7be8a-36a431191785fdc7?ts=1756719068",
"avatar_static": "http://friendica/photo/contact/320/0700725d-72c7be8a-36a431191785fdc7?ts=1756719068&static=1",
"header": "http://friendica/photo/header/0700725d-72c7be8a-36a431191785fdc7?ts=1756719068",
"header_static": "http://friendica/photo/header/0700725d-72c7be8a-36a431191785fdc7?ts=1756719068&static=1",
"followers_count": 0,
"following_count": 0,
"statuses_count": 0,
"last_status_at": "2025-09-01T00:00:00.000Z",
"emojis": [],
"fields": []
},
"media_attachments": [],
"mentions": [],
"tags": [],
"emojis": [],
"card": null,
"poll": null,
"friendica": {
"title": "",
"changed_at": "2025-09-01T09:31:25.000Z",
"commented_at": "2025-09-01T09:31:25.000Z",
"received_at": "2025-09-01T09:31:25.000Z",
"delivery_data": {
"delivery_queue_count": null,
"delivery_queue_done": null,
"delivery_queue_failed": null
},
"dislikes_count": 0,
"disliked": false,
"network": "ActivityPub",
"platform": "ActivityPub",
"version": "",
"sitename": "",
"visibility": {
"allow_cid": [],
"deny_cid": [],
"allow_gid": [],
"deny_gid": []
},
"content": "no type \u26a0\ufe0f"
}
}
Example 4¶
activity
{
"@context": "https://www.w3.org/ns/activitystreams",
"type": "Create",
"actor": "http://pasture-one-actor/actor",
"to": [
"https://www.w3.org/ns/activitystreams#Public",
"http://friendica/profile/friend"
],
"id": "http://pasture-one-actor/activity/b1KOEN_8iRI",
"published": "2025-09-01T09:31:26Z",
"object": {
"type": "Note",
"attributedTo": "http://pasture-one-actor/actor",
"to": [
"https://www.w3.org/ns/activitystreams#Public",
"http://friendica/profile/friend"
],
"id": "http://pasture-one-actor/object/m9PPhS-Cj34",
"published": "2025-09-01T09:31:26Z",
"@context": "https://www.w3.org/ns/activitystreams",
"content": "Hashtag not in @context \u26a0\ufe0f ",
"tag": {
"type": "Hashtag",
"name": "#test"
}
}
}
friendica
{
"id": "20",
"created_at": "2025-09-01T09:31:26.000Z",
"edited_at": null,
"in_reply_to_id": null,
"in_reply_to_status": null,
"in_reply_to_account_id": null,
"sensitive": false,
"spoiler_text": "",
"visibility": "public",
"language": "en",
"uri": "http://pasture-one-actor/object/m9PPhS-Cj34",
"url": "http://pasture-one-actor/object/m9PPhS-Cj34",
"replies_count": 0,
"reblogs_count": 0,
"favourites_count": 0,
"favourited": false,
"reblogged": false,
"muted": false,
"bookmarked": false,
"content": "Hashtag not in @context \u26a0\ufe0f",
"reblog": null,
"quote": null,
"application": {
"name": "ActivityPub",
"vapid_key": null
},
"account": {
"id": "5",
"username": "actor",
"acct": "",
"display_name": "Test Actor",
"locked": false,
"bot": false,
"discoverable": true,
"group": false,
"created_at": "2025-09-01T09:31:08.000Z",
"note": "",
"url": "http://pasture-one-actor/actor",
"avatar": "http://friendica/photo/contact/320/0700725d-72c7be8a-36a431191785fdc7?ts=1756719068",
"avatar_static": "http://friendica/photo/contact/320/0700725d-72c7be8a-36a431191785fdc7?ts=1756719068&static=1",
"header": "http://friendica/photo/header/0700725d-72c7be8a-36a431191785fdc7?ts=1756719068",
"header_static": "http://friendica/photo/header/0700725d-72c7be8a-36a431191785fdc7?ts=1756719068&static=1",
"followers_count": 0,
"following_count": 0,
"statuses_count": 0,
"last_status_at": "2025-09-01T00:00:00.000Z",
"emojis": [],
"fields": []
},
"media_attachments": [],
"mentions": [],
"tags": [],
"emojis": [],
"card": null,
"poll": null,
"friendica": {
"title": "",
"changed_at": "2025-09-01T09:31:26.000Z",
"commented_at": "2025-09-01T09:31:26.000Z",
"received_at": "2025-09-01T09:31:26.000Z",
"delivery_data": {
"delivery_queue_count": null,
"delivery_queue_done": null,
"delivery_queue_failed": null
},
"dislikes_count": 0,
"disliked": false,
"network": "ActivityPub",
"platform": "ActivityPub",
"version": "",
"sitename": "",
"visibility": {
"allow_cid": [],
"deny_cid": [],
"allow_gid": [],
"deny_gid": []
},
"content": "Hashtag not in @context \u26a0\ufe0f"
}
}
Example 5¶
activity
{
"@context": "https://www.w3.org/ns/activitystreams",
"type": "Create",
"actor": "http://pasture-one-actor/actor",
"to": [
"https://www.w3.org/ns/activitystreams#Public",
"http://friendica/profile/friend"
],
"id": "http://pasture-one-actor/activity/0MK_a7he8cc",
"published": "2025-09-01T09:31:27Z",
"object": {
"type": "Note",
"attributedTo": "http://pasture-one-actor/actor",
"to": [
"https://www.w3.org/ns/activitystreams#Public",
"http://friendica/profile/friend"
],
"id": "http://pasture-one-actor/object/lIoyoXK3W3g",
"published": "2025-09-01T09:31:27Z",
"@context": "https://www.w3.org/ns/activitystreams",
"content": "Hashtag not in @context; as:Hashtag",
"tag": {
"type": "as:Hashtag",
"name": "#test"
}
}
}
friendica
{
"id": "21",
"created_at": "2025-09-01T09:31:27.000Z",
"edited_at": null,
"in_reply_to_id": null,
"in_reply_to_status": null,
"in_reply_to_account_id": null,
"sensitive": false,
"spoiler_text": "",
"visibility": "public",
"language": "en",
"uri": "http://pasture-one-actor/object/lIoyoXK3W3g",
"url": "http://pasture-one-actor/object/lIoyoXK3W3g",
"replies_count": 0,
"reblogs_count": 0,
"favourites_count": 0,
"favourited": false,
"reblogged": false,
"muted": false,
"bookmarked": false,
"content": "Hashtag not in @context; as:Hashtag",
"reblog": null,
"quote": null,
"application": {
"name": "ActivityPub",
"vapid_key": null
},
"account": {
"id": "5",
"username": "actor",
"acct": "",
"display_name": "Test Actor",
"locked": false,
"bot": false,
"discoverable": true,
"group": false,
"created_at": "2025-09-01T09:31:08.000Z",
"note": "",
"url": "http://pasture-one-actor/actor",
"avatar": "http://friendica/photo/contact/320/0700725d-72c7be8a-36a431191785fdc7?ts=1756719068",
"avatar_static": "http://friendica/photo/contact/320/0700725d-72c7be8a-36a431191785fdc7?ts=1756719068&static=1",
"header": "http://friendica/photo/header/0700725d-72c7be8a-36a431191785fdc7?ts=1756719068",
"header_static": "http://friendica/photo/header/0700725d-72c7be8a-36a431191785fdc7?ts=1756719068&static=1",
"followers_count": 0,
"following_count": 0,
"statuses_count": 0,
"last_status_at": "2025-09-01T00:00:00.000Z",
"emojis": [],
"fields": []
},
"media_attachments": [],
"mentions": [],
"tags": [
{
"name": "test",
"url": "http://friendica/search?tag=test",
"history": [],
"following": false
}
],
"emojis": [],
"card": null,
"poll": null,
"friendica": {
"title": "",
"changed_at": "2025-09-01T09:31:27.000Z",
"commented_at": "2025-09-01T09:31:27.000Z",
"received_at": "2025-09-01T09:31:27.000Z",
"delivery_data": {
"delivery_queue_count": null,
"delivery_queue_done": null,
"delivery_queue_failed": null
},
"dislikes_count": 0,
"disliked": false,
"network": "ActivityPub",
"platform": "ActivityPub",
"version": "",
"sitename": "",
"visibility": {
"allow_cid": [],
"deny_cid": [],
"allow_gid": [],
"deny_gid": []
},
"content": "Hashtag not in @context; as:Hashtag"
}
}