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://sigmoid.social/users/roban/statuses/109644148703503794", "type": "Note", "summary": null, "inReplyTo": "https://sigmoid.social/users/roban/statuses/109644111140323347", "published": "2023-01-06T20:28:57Z", "url": "https://sigmoid.social/@roban/109644148703503794", "attributedTo": "https://sigmoid.social/users/roban", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://sigmoid.social/users/roban/followers" ], "sensitive": false, "atomUri": "https://sigmoid.social/users/roban/statuses/109644148703503794", "inReplyToAtomUri": "https://sigmoid.social/users/roban/statuses/109644111140323347", "conversation": "tag:sigmoid.social,2023-01-06:objectId=4213598:objectType=Conversation", "content": "<p>* mathematically, you could distribute the population-level costs to individual points (e.g. the false negative that pushes you over a penalty threshold gets assigned the full penalty), but that doesn’t get around the practical consequences of the fact that utility no longer forms a commutative <a href=\"https://sigmoid.social/tags/monoid\" class=\"mention hashtag\" rel=\"tag\">#<span>monoid</span></a>, so you can’t independently calculate each example-level utility then sum: you don’t know if you exceed the penalty threshold, or which example pushed you over the edge, until you aggregate.</p>", "contentMap": { "en": "<p>* mathematically, you could distribute the population-level costs to individual points (e.g. the false negative that pushes you over a penalty threshold gets assigned the full penalty), but that doesn’t get around the practical consequences of the fact that utility no longer forms a commutative <a href=\"https://sigmoid.social/tags/monoid\" class=\"mention hashtag\" rel=\"tag\">#<span>monoid</span></a>, so you can’t independently calculate each example-level utility then sum: you don’t know if you exceed the penalty threshold, or which example pushed you over the edge, until you aggregate.</p>" }, "updated": "2023-01-06T20:29:34Z", "attachment": [], "tag": [ { "type": "Hashtag", "href": "https://sigmoid.social/tags/monoid", "name": "#monoid" } ], "replies": { "id": "https://sigmoid.social/users/roban/statuses/109644148703503794/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://sigmoid.social/users/roban/statuses/109644148703503794/replies?min_id=109644181312731451&page=true", "partOf": "https://sigmoid.social/users/roban/statuses/109644148703503794/replies", "items": [ "https://sigmoid.social/users/roban/statuses/109644181312731451" ] } }, "likes": { "id": "https://sigmoid.social/users/roban/statuses/109644148703503794/likes", "type": "Collection", "totalItems": 1 }, "shares": { "id": "https://sigmoid.social/users/roban/statuses/109644148703503794/shares", "type": "Collection", "totalItems": 0 } }