ActivityPub Viewer

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.

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{ "@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://flipboard.social/users/ScienceDesk/statuses/114445965053381707", "type": "Note", "summary": null, "inReplyTo": null, "published": "2025-05-03T21:13:59Z", "url": "https://flipboard.social/@ScienceDesk/114445965053381707", "attributedTo": "https://flipboard.social/users/ScienceDesk", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://flipboard.social/users/ScienceDesk/followers", "https://flipboard.com/users/LiveScience" ], "sensitive": false, "atomUri": "https://flipboard.social/users/ScienceDesk/statuses/114445965053381707", "inReplyToAtomUri": null, "conversation": "tag:flipboard.social,2025-05-03:objectId=145254404:objectType=Conversation", "content": "<p>In 1972, physicists William Press and Saul Teukolsky described a theoretical phenomenon called a black hole bomb in which mirrors enclose, reflect and exponentially amplify waves emanating from a rotating black hole. More than 50 years later, researchers have created a model for the first time. <span class=\"h-card\" translate=\"no\"><a href=\"https://flipboard.com/@LiveScience\" class=\"u-url mention\">@<span>LiveScience</span></a></span> explains:</p><p><a href=\"https://flip.it/rhuHi3\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"\">flip.it/rhuHi3</span><span class=\"invisible\"></span></a></p><p><a href=\"https://flipboard.social/tags/Science\" class=\"mention hashtag\" rel=\"tag\">#<span>Science</span></a> <a href=\"https://flipboard.social/tags/BlackHoles\" class=\"mention hashtag\" rel=\"tag\">#<span>BlackHoles</span></a> <a href=\"https://flipboard.social/tags/Space\" class=\"mention hashtag\" rel=\"tag\">#<span>Space</span></a> <a href=\"https://flipboard.social/tags/Astronomy\" class=\"mention hashtag\" rel=\"tag\">#<span>Astronomy</span></a></p>", "contentMap": { "en": "<p>In 1972, physicists William Press and Saul Teukolsky described a theoretical phenomenon called a black hole bomb in which mirrors enclose, reflect and exponentially amplify waves emanating from a rotating black hole. More than 50 years later, researchers have created a model for the first time. <span class=\"h-card\" translate=\"no\"><a href=\"https://flipboard.com/@LiveScience\" class=\"u-url mention\">@<span>LiveScience</span></a></span> explains:</p><p><a href=\"https://flip.it/rhuHi3\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"\">flip.it/rhuHi3</span><span class=\"invisible\"></span></a></p><p><a href=\"https://flipboard.social/tags/Science\" class=\"mention hashtag\" rel=\"tag\">#<span>Science</span></a> <a href=\"https://flipboard.social/tags/BlackHoles\" class=\"mention hashtag\" rel=\"tag\">#<span>BlackHoles</span></a> <a href=\"https://flipboard.social/tags/Space\" class=\"mention hashtag\" rel=\"tag\">#<span>Space</span></a> <a href=\"https://flipboard.social/tags/Astronomy\" class=\"mention hashtag\" rel=\"tag\">#<span>Astronomy</span></a></p>" }, "attachment": [], "tag": [ { "type": "Mention", "href": "https://flipboard.com/users/LiveScience", "name": "@LiveScience@flipboard.com" }, { "type": "Hashtag", "href": "https://flipboard.social/tags/science", "name": "#science" }, { "type": "Hashtag", "href": "https://flipboard.social/tags/blackholes", "name": "#blackholes" }, { "type": "Hashtag", "href": "https://flipboard.social/tags/space", "name": "#space" }, { "type": "Hashtag", "href": "https://flipboard.social/tags/astronomy", "name": "#astronomy" } ], "replies": { "id": "https://flipboard.social/users/ScienceDesk/statuses/114445965053381707/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://flipboard.social/users/ScienceDesk/statuses/114445965053381707/replies?only_other_accounts=true&page=true", "partOf": "https://flipboard.social/users/ScienceDesk/statuses/114445965053381707/replies", "items": [] } }, "likes": { "id": "https://flipboard.social/users/ScienceDesk/statuses/114445965053381707/likes", "type": "Collection", "totalItems": 6 }, "shares": { "id": "https://flipboard.social/users/ScienceDesk/statuses/114445965053381707/shares", "type": "Collection", "totalItems": 3 } }