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",
"blurhash": "toot:blurhash",
"focalPoint": {
"@container": "@list",
"@id": "toot:focalPoint"
},
"Hashtag": "as:Hashtag"
}
],
"id": "https://masto.ai/users/hackaday/statuses/114568184638289058",
"type": "Note",
"summary": null,
"inReplyTo": null,
"published": "2025-05-25T11:16:02Z",
"url": "https://masto.ai/@hackaday/114568184638289058",
"attributedTo": "https://masto.ai/users/hackaday",
"to": [
"https://www.w3.org/ns/activitystreams#Public"
],
"cc": [
"https://masto.ai/users/hackaday/followers"
],
"sensitive": false,
"atomUri": "https://masto.ai/users/hackaday/statuses/114568184638289058",
"inReplyToAtomUri": null,
"conversation": "tag:masto.ai,2025-05-25:objectId=265697430:objectType=Conversation",
"content": "<p>A Quick Introduction to TCP Congestion Control</p><p>It’s hard to imagine now, but in the mid-1980s, the Internet came close to collapsing due to the number of users congesting its networks. Computers would request packets as quickly …read more<br /><a href=\"https://masto.ai/tags/hacking\" class=\"mention hashtag\" rel=\"tag\">#<span>hacking</span></a> <a href=\"https://masto.ai/tags/projects\" class=\"mention hashtag\" rel=\"tag\">#<span>projects</span></a><br /><a href=\"https://hackaday.com/2025/05/25/a-quick-introduction-to-tcp-congestion-control/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">hackaday.com/2025/05/25/a-quic</span><span class=\"invisible\">k-introduction-to-tcp-congestion-control/</span></a></p>",
"contentMap": {
"en": "<p>A Quick Introduction to TCP Congestion Control</p><p>It’s hard to imagine now, but in the mid-1980s, the Internet came close to collapsing due to the number of users congesting its networks. Computers would request packets as quickly …read more<br /><a href=\"https://masto.ai/tags/hacking\" class=\"mention hashtag\" rel=\"tag\">#<span>hacking</span></a> <a href=\"https://masto.ai/tags/projects\" class=\"mention hashtag\" rel=\"tag\">#<span>projects</span></a><br /><a href=\"https://hackaday.com/2025/05/25/a-quick-introduction-to-tcp-congestion-control/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">hackaday.com/2025/05/25/a-quic</span><span class=\"invisible\">k-introduction-to-tcp-congestion-control/</span></a></p>"
},
"attachment": [
{
"type": "Document",
"mediaType": "image/png",
"url": "https://s3.masto.ai/media_attachments/files/114/568/184/619/105/029/original/50bb0744fb1eff81.png",
"name": null,
"blurhash": "U93+mBoJkDj?o%jrfljstWa#axa#b0a~f5a$",
"width": 800,
"height": 450
}
],
"tag": [
{
"type": "Hashtag",
"href": "https://masto.ai/tags/hacking",
"name": "#hacking"
},
{
"type": "Hashtag",
"href": "https://masto.ai/tags/projects",
"name": "#projects"
}
],
"replies": {
"id": "https://masto.ai/users/hackaday/statuses/114568184638289058/replies",
"type": "Collection",
"first": {
"type": "CollectionPage",
"next": "https://masto.ai/users/hackaday/statuses/114568184638289058/replies?only_other_accounts=true&page=true",
"partOf": "https://masto.ai/users/hackaday/statuses/114568184638289058/replies",
"items": []
}
},
"likes": {
"id": "https://masto.ai/users/hackaday/statuses/114568184638289058/likes",
"type": "Collection",
"totalItems": 0
},
"shares": {
"id": "https://masto.ai/users/hackaday/statuses/114568184638289058/shares",
"type": "Collection",
"totalItems": 0
}
}