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"
}
],
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"type": "Note",
"summary": null,
"inReplyTo": null,
"published": "2025-04-12T14:15:09Z",
"url": "https://mastodon.world/@formuchdeliberation/114325409600365235",
"attributedTo": "https://mastodon.world/users/formuchdeliberation",
"to": [
"https://www.w3.org/ns/activitystreams#Public"
],
"cc": [
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],
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"inReplyToAtomUri": null,
"conversation": "tag:mastodon.world,2025-04-12:objectId=400750744:objectType=Conversation",
"content": "<p>How a Problem About Pigeons Powers Complexity Theory | Quanta Magazine…</p><p>When pigeons outnumber pigeonholes, some birds must double up. This obvious statement — and its inverse — have deep connections to many areas of math and computer science... <a href=\"https://mastodon.world/tags/mathematics\" class=\"mention hashtag\" rel=\"tag\">#<span>mathematics</span></a> <a href=\"https://mastodon.world/tags/computerscience\" class=\"mention hashtag\" rel=\"tag\">#<span>computerscience</span></a> <a href=\"https://mastodon.world/tags/complexitytheory\" class=\"mention hashtag\" rel=\"tag\">#<span>complexitytheory</span></a> <a href=\"https://mastodon.world/tags/gametheory\" class=\"mention hashtag\" rel=\"tag\">#<span>gametheory</span></a> <a href=\"https://mastodon.world/tags/computationalscience\" class=\"mention hashtag\" rel=\"tag\">#<span>computationalscience</span></a></p><p><a href=\"https://formuchdeliberation.wordpress.com/2025/04/12/how-a-problem-about-pigeons-powers-complexity-theory-quanta-magazine/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">formuchdeliberation.wordpress.</span><span class=\"invisible\">com/2025/04/12/how-a-problem-about-pigeons-powers-complexity-theory-quanta-magazine/</span></a></p>",
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},
"attachment": [],
"tag": [
{
"type": "Hashtag",
"href": "https://mastodon.world/tags/mathematics",
"name": "#mathematics"
},
{
"type": "Hashtag",
"href": "https://mastodon.world/tags/computerscience",
"name": "#computerscience"
},
{
"type": "Hashtag",
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"name": "#complexitytheory"
},
{
"type": "Hashtag",
"href": "https://mastodon.world/tags/gametheory",
"name": "#gametheory"
},
{
"type": "Hashtag",
"href": "https://mastodon.world/tags/computationalscience",
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}
],
"replies": {
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"type": "Collection",
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}
},
"likes": {
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},
"shares": {
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}
}