A small tool to view real-world ActivityPub objects as JSON! Enter a URL
or username from Mastodon or a similar service below, and we'll send a
request with
the right
Accept
header
to the server to view the underlying object.
{
"@context": [
"https://www.w3.org/ns/activitystreams",
{
"ostatus": "http://ostatus.org#",
"atomUri": "ostatus:atomUri",
"inReplyToAtomUri": "ostatus:inReplyToAtomUri",
"conversation": "ostatus:conversation",
"sensitive": "as:sensitive",
"toot": "http://joinmastodon.org/ns#",
"votersCount": "toot:votersCount",
"Hashtag": "as:Hashtag"
}
],
"id": "https://fosstodon.org/users/mmstick/statuses/113952008189644564",
"type": "Note",
"summary": null,
"inReplyTo": null,
"published": "2025-02-05T15:34:16Z",
"url": "https://fosstodon.org/@mmstick/113952008189644564",
"attributedTo": "https://fosstodon.org/users/mmstick",
"to": [
"https://www.w3.org/ns/activitystreams#Public"
],
"cc": [
"https://fosstodon.org/users/mmstick/followers"
],
"sensitive": false,
"atomUri": "https://fosstodon.org/users/mmstick/statuses/113952008189644564",
"inReplyToAtomUri": null,
"conversation": "tag:fosstodon.org,2025-02-05:objectId=285236461:objectType=Conversation",
"content": "<p>PSA to <a href=\"https://fosstodon.org/tags/rustlang\" class=\"mention hashtag\" rel=\"tag\">#<span>rustlang</span></a> and <a href=\"https://fosstodon.org/tags/linux\" class=\"mention hashtag\" rel=\"tag\">#<span>linux</span></a> developers: there is a long-standing bug in the system allocator (glibc malloc) which causes it to hoard large sbrk buffers in arenas. By default, it uses heuristics to dynamically increase the mmap threshold—the point where it switches from using sbrk to mmap. In some scenarios, these larger buffers are never trimmed, causing a memory "leak". Some <a href=\"https://fosstodon.org/tags/libcosmic\" class=\"mention hashtag\" rel=\"tag\">#<span>libcosmic</span></a> apps were affected, causing as much as 10-30x memory usage. To fix, see the PR below:</p><p><a href=\"https://github.com/pop-os/cosmic-bg/pull/73\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">github.com/pop-os/cosmic-bg/pu</span><span class=\"invisible\">ll/73</span></a></p>",
"contentMap": {
"en": "<p>PSA to <a href=\"https://fosstodon.org/tags/rustlang\" class=\"mention hashtag\" rel=\"tag\">#<span>rustlang</span></a> and <a href=\"https://fosstodon.org/tags/linux\" class=\"mention hashtag\" rel=\"tag\">#<span>linux</span></a> developers: there is a long-standing bug in the system allocator (glibc malloc) which causes it to hoard large sbrk buffers in arenas. By default, it uses heuristics to dynamically increase the mmap threshold—the point where it switches from using sbrk to mmap. In some scenarios, these larger buffers are never trimmed, causing a memory "leak". Some <a href=\"https://fosstodon.org/tags/libcosmic\" class=\"mention hashtag\" rel=\"tag\">#<span>libcosmic</span></a> apps were affected, causing as much as 10-30x memory usage. To fix, see the PR below:</p><p><a href=\"https://github.com/pop-os/cosmic-bg/pull/73\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">github.com/pop-os/cosmic-bg/pu</span><span class=\"invisible\">ll/73</span></a></p>"
},
"updated": "2025-02-06T01:08:44Z",
"attachment": [],
"tag": [
{
"type": "Hashtag",
"href": "https://fosstodon.org/tags/rustlang",
"name": "#rustlang"
},
{
"type": "Hashtag",
"href": "https://fosstodon.org/tags/linux",
"name": "#linux"
},
{
"type": "Hashtag",
"href": "https://fosstodon.org/tags/libcosmic",
"name": "#libcosmic"
}
],
"replies": {
"id": "https://fosstodon.org/users/mmstick/statuses/113952008189644564/replies",
"type": "Collection",
"first": {
"type": "CollectionPage",
"next": "https://fosstodon.org/users/mmstick/statuses/113952008189644564/replies?min_id=113952011086575091&page=true",
"partOf": "https://fosstodon.org/users/mmstick/statuses/113952008189644564/replies",
"items": [
"https://fosstodon.org/users/mmstick/statuses/113952011086575091"
]
}
},
"likes": {
"id": "https://fosstodon.org/users/mmstick/statuses/113952008189644564/likes",
"type": "Collection",
"totalItems": 43
},
"shares": {
"id": "https://fosstodon.org/users/mmstick/statuses/113952008189644564/shares",
"type": "Collection",
"totalItems": 12
}
}