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://mastodon.acm.org/users/ACM/statuses/114681610921689236",
"type": "Note",
"summary": null,
"inReplyTo": null,
"published": "2025-06-14T12:01:50Z",
"url": "https://mastodon.acm.org/@ACM/114681610921689236",
"attributedTo": "https://mastodon.acm.org/users/ACM",
"to": [
"https://www.w3.org/ns/activitystreams#Public"
],
"cc": [
"https://mastodon.acm.org/users/ACM/followers"
],
"sensitive": false,
"atomUri": "https://mastodon.acm.org/users/ACM/statuses/114681610921689236",
"inReplyToAtomUri": null,
"conversation": "tag:mastodon.acm.org,2025-06-14:objectId=26965171:objectType=Conversation",
"content": "<p><a href=\"https://mastodon.acm.org/tags/OTD\" class=\"mention hashtag\" rel=\"tag\">#<span>OTD</span></a> in <a href=\"https://mastodon.acm.org/tags/ComputingHistory\" class=\"mention hashtag\" rel=\"tag\">#<span>ComputingHistory</span></a> in 1822, Charles Babbage submitted a one-page paper outlining a revolutionary invention: the Difference Engine. The Difference Engine would become the world’s first mechanical computer.</p>",
"contentMap": {
"en": "<p><a href=\"https://mastodon.acm.org/tags/OTD\" class=\"mention hashtag\" rel=\"tag\">#<span>OTD</span></a> in <a href=\"https://mastodon.acm.org/tags/ComputingHistory\" class=\"mention hashtag\" rel=\"tag\">#<span>ComputingHistory</span></a> in 1822, Charles Babbage submitted a one-page paper outlining a revolutionary invention: the Difference Engine. The Difference Engine would become the world’s first mechanical computer.</p>"
},
"attachment": [
{
"type": "Document",
"mediaType": "image/jpeg",
"url": "https://mastodon.acm.org/system/media_attachments/files/114/681/610/838/501/115/original/832be6fc3d3983bc.jpeg",
"name": null,
"blurhash": "URP=ym.V-:J{WBNGspW-^9ORI:$+IVbus:fk",
"width": 1024,
"height": 1024
}
],
"tag": [
{
"type": "Hashtag",
"href": "https://mastodon.acm.org/tags/otd",
"name": "#otd"
},
{
"type": "Hashtag",
"href": "https://mastodon.acm.org/tags/computinghistory",
"name": "#computinghistory"
}
],
"replies": {
"id": "https://mastodon.acm.org/users/ACM/statuses/114681610921689236/replies",
"type": "Collection",
"first": {
"type": "CollectionPage",
"next": "https://mastodon.acm.org/users/ACM/statuses/114681610921689236/replies?only_other_accounts=true&page=true",
"partOf": "https://mastodon.acm.org/users/ACM/statuses/114681610921689236/replies",
"items": []
}
},
"likes": {
"id": "https://mastodon.acm.org/users/ACM/statuses/114681610921689236/likes",
"type": "Collection",
"totalItems": 9
},
"shares": {
"id": "https://mastodon.acm.org/users/ACM/statuses/114681610921689236/shares",
"type": "Collection",
"totalItems": 4
}
}