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://kafeneio.social/users/norshgaath/statuses/114632589893709816", "type": "Note", "summary": null, "inReplyTo": "https://kafeneio.social/users/norshgaath/statuses/114632586997298525", "published": "2025-06-05T20:15:08Z", "url": "https://kafeneio.social/@norshgaath/114632589893709816", "attributedTo": "https://kafeneio.social/users/norshgaath", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://kafeneio.social/users/norshgaath/followers" ], "sensitive": false, "atomUri": "https://kafeneio.social/users/norshgaath/statuses/114632589893709816", "inReplyToAtomUri": "https://kafeneio.social/users/norshgaath/statuses/114632586997298525", "conversation": "tag:kafeneio.social,2025-06-05:objectId=27253792:objectType=Conversation", "content": "<p>- Yandex has used this method since 2017.</p><p>- Meta started abusing localhost in late 2024 using HTTP, then upgraded to WebSockets and WebRTC. And disabled the behavior immediately after the public disclosure in June 2025.</p><p><a href=\"https://kafeneio.social/tags/facebook\" class=\"mention hashtag\" rel=\"tag\">#<span>facebook</span></a> <a href=\"https://kafeneio.social/tags/meta\" class=\"mention hashtag\" rel=\"tag\">#<span>meta</span></a> <a href=\"https://kafeneio.social/tags/yandex\" class=\"mention hashtag\" rel=\"tag\">#<span>yandex</span></a> <a href=\"https://kafeneio.social/tags/privacy\" class=\"mention hashtag\" rel=\"tag\">#<span>privacy</span></a> <a href=\"https://kafeneio.social/tags/tracking\" class=\"mention hashtag\" rel=\"tag\">#<span>tracking</span></a></p>", "contentMap": { "en": "<p>- Yandex has used this method since 2017.</p><p>- Meta started abusing localhost in late 2024 using HTTP, then upgraded to WebSockets and WebRTC. And disabled the behavior immediately after the public disclosure in June 2025.</p><p><a href=\"https://kafeneio.social/tags/facebook\" class=\"mention hashtag\" rel=\"tag\">#<span>facebook</span></a> <a href=\"https://kafeneio.social/tags/meta\" class=\"mention hashtag\" rel=\"tag\">#<span>meta</span></a> <a href=\"https://kafeneio.social/tags/yandex\" class=\"mention hashtag\" rel=\"tag\">#<span>yandex</span></a> <a href=\"https://kafeneio.social/tags/privacy\" class=\"mention hashtag\" rel=\"tag\">#<span>privacy</span></a> <a href=\"https://kafeneio.social/tags/tracking\" class=\"mention hashtag\" rel=\"tag\">#<span>tracking</span></a></p>" }, "updated": "2025-06-05T20:17:07Z", "attachment": [], "tag": [ { "type": "Hashtag", "href": "https://kafeneio.social/tags/facebook", "name": "#facebook" }, { "type": "Hashtag", "href": "https://kafeneio.social/tags/meta", "name": "#meta" }, { "type": "Hashtag", "href": "https://kafeneio.social/tags/yandex", "name": "#yandex" }, { "type": "Hashtag", "href": "https://kafeneio.social/tags/privacy", "name": "#privacy" }, { "type": "Hashtag", "href": "https://kafeneio.social/tags/tracking", "name": "#tracking" } ], "replies": { "id": "https://kafeneio.social/users/norshgaath/statuses/114632589893709816/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://kafeneio.social/users/norshgaath/statuses/114632589893709816/replies?only_other_accounts=true&page=true", "partOf": "https://kafeneio.social/users/norshgaath/statuses/114632589893709816/replies", "items": [] } }, "likes": { "id": "https://kafeneio.social/users/norshgaath/statuses/114632589893709816/likes", "type": "Collection", "totalItems": 0 }, "shares": { "id": "https://kafeneio.social/users/norshgaath/statuses/114632589893709816/shares", "type": "Collection", "totalItems": 1 } }