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://mathstodon.xyz/users/paysmaths/statuses/114744844044260256",
"type": "Note",
"summary": null,
"inReplyTo": null,
"published": "2025-06-25T16:02:51Z",
"url": "https://mathstodon.xyz/@paysmaths/114744844044260256",
"attributedTo": "https://mathstodon.xyz/users/paysmaths",
"to": [
"https://www.w3.org/ns/activitystreams#Public"
],
"cc": [
"https://mathstodon.xyz/users/paysmaths/followers"
],
"sensitive": false,
"atomUri": "https://mathstodon.xyz/users/paysmaths/statuses/114744844044260256",
"inReplyToAtomUri": null,
"conversation": "tag:mathstodon.xyz,2025-06-25:objectId=160083102:objectType=Conversation",
"content": "<p>"Mathematics is not only real, but it is the only reality. That is that entire universe is made of matter, obviously. And matter is made of particles. It's made of electrons and neutrons and protons. So the entire universe is made out of particles. Now what are the particles made out of? They're not made out of anything. The only thing you can say about the reality of an electron is to cite its mathematical properties [...]"– Martin Gardner (1914-2010)<br /><a href=\"https://mathstodon.xyz/tags/quote\" class=\"mention hashtag\" rel=\"tag\">#<span>quote</span></a> <a href=\"https://mathstodon.xyz/tags/mathematics\" class=\"mention hashtag\" rel=\"tag\">#<span>mathematics</span></a> <a href=\"https://mathstodon.xyz/tags/maths\" class=\"mention hashtag\" rel=\"tag\">#<span>maths</span></a> <a href=\"https://mathstodon.xyz/tags/math\" class=\"mention hashtag\" rel=\"tag\">#<span>math</span></a> <a href=\"https://mathstodon.xyz/tags/reality\" class=\"mention hashtag\" rel=\"tag\">#<span>reality</span></a></p>",
"contentMap": {
"fr": "<p>"Mathematics is not only real, but it is the only reality. That is that entire universe is made of matter, obviously. And matter is made of particles. It's made of electrons and neutrons and protons. So the entire universe is made out of particles. Now what are the particles made out of? They're not made out of anything. The only thing you can say about the reality of an electron is to cite its mathematical properties [...]"– Martin Gardner (1914-2010)<br /><a href=\"https://mathstodon.xyz/tags/quote\" class=\"mention hashtag\" rel=\"tag\">#<span>quote</span></a> <a href=\"https://mathstodon.xyz/tags/mathematics\" class=\"mention hashtag\" rel=\"tag\">#<span>mathematics</span></a> <a href=\"https://mathstodon.xyz/tags/maths\" class=\"mention hashtag\" rel=\"tag\">#<span>maths</span></a> <a href=\"https://mathstodon.xyz/tags/math\" class=\"mention hashtag\" rel=\"tag\">#<span>math</span></a> <a href=\"https://mathstodon.xyz/tags/reality\" class=\"mention hashtag\" rel=\"tag\">#<span>reality</span></a></p>"
},
"attachment": [
{
"type": "Document",
"mediaType": "image/png",
"url": "https://media.mathstodon.xyz/media_attachments/files/114/744/843/919/274/482/original/b38ae3a69581f78a.png",
"name": "Photographic portrait of Martin Gardner, and a quote : \"Mathematics is not only real, but it is the only reality. That is that entire universe is made of matter, obviously. And matter is made of particles. It's made of electrons and neutrons and protons. So the entire universe is made out of particles. Now what are the particles made out of? They're not made out of anything. The only thing you can say about the reality of an electron is to cite its mathematical properties. So there's a sense in which matter has completely dissolved and what is left is just a mathematical structure.\" ",
"blurhash": "UiCH{DQkVrtmayj[ofofMxWXa}aebbV@WBaz",
"width": 1024,
"height": 512
}
],
"tag": [
{
"type": "Hashtag",
"href": "https://mathstodon.xyz/tags/reality",
"name": "#reality"
},
{
"type": "Hashtag",
"href": "https://mathstodon.xyz/tags/math",
"name": "#math"
},
{
"type": "Hashtag",
"href": "https://mathstodon.xyz/tags/maths",
"name": "#maths"
},
{
"type": "Hashtag",
"href": "https://mathstodon.xyz/tags/mathematics",
"name": "#mathematics"
},
{
"type": "Hashtag",
"href": "https://mathstodon.xyz/tags/quote",
"name": "#quote"
}
],
"replies": {
"id": "https://mathstodon.xyz/users/paysmaths/statuses/114744844044260256/replies",
"type": "Collection",
"first": {
"type": "CollectionPage",
"next": "https://mathstodon.xyz/users/paysmaths/statuses/114744844044260256/replies?only_other_accounts=true&page=true",
"partOf": "https://mathstodon.xyz/users/paysmaths/statuses/114744844044260256/replies",
"items": []
}
},
"likes": {
"id": "https://mathstodon.xyz/users/paysmaths/statuses/114744844044260256/likes",
"type": "Collection",
"totalItems": 3
},
"shares": {
"id": "https://mathstodon.xyz/users/paysmaths/statuses/114744844044260256/shares",
"type": "Collection",
"totalItems": 2
}
}