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" } ], "id": "https://mathstodon.xyz/users/tao/statuses/109451731409275399", "type": "Note", "summary": null, "inReplyTo": "https://mathstodon.xyz/users/tao/statuses/109451643811911706", "published": "2022-12-03T20:54:42Z", "url": "https://mathstodon.xyz/@tao/109451731409275399", "attributedTo": "https://mathstodon.xyz/users/tao", "to": [ "https://mathstodon.xyz/users/tao/followers" ], "cc": [ "https://www.w3.org/ns/activitystreams#Public" ], "sensitive": false, "atomUri": "https://mathstodon.xyz/users/tao/statuses/109451731409275399", "inReplyToAtomUri": "https://mathstodon.xyz/users/tao/statuses/109451643811911706", "conversation": "tag:mathstodon.xyz,2022-12-03:objectId=32025619:objectType=Conversation", "content": "<p>Moving away from the Hilbert space context, some broader examples of this general philosophy:</p><p>* Invariance under linear combinations / convex combinations / algebraic operations -&gt; suffices to check basis elements / extreme elements / generators</p><p>* Invariance under tensor products -&gt; suffices to check one-dimensional/irreducible case</p><p>* Invariance under limits -&gt; suffices to check a dense subclass</p><p>* Multiplicative structure (in analytic number theory) -&gt; suffices to check prime powers</p><p>(3/2)</p>", "contentMap": { "en": "<p>Moving away from the Hilbert space context, some broader examples of this general philosophy:</p><p>* Invariance under linear combinations / convex combinations / algebraic operations -&gt; suffices to check basis elements / extreme elements / generators</p><p>* Invariance under tensor products -&gt; suffices to check one-dimensional/irreducible case</p><p>* Invariance under limits -&gt; suffices to check a dense subclass</p><p>* Multiplicative structure (in analytic number theory) -&gt; suffices to check prime powers</p><p>(3/2)</p>" }, "updated": "2022-12-03T20:58:11Z", "attachment": [], "tag": [], "replies": { "id": "https://mathstodon.xyz/users/tao/statuses/109451731409275399/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mathstodon.xyz/users/tao/statuses/109451731409275399/replies?min_id=109451784285426919&page=true", "partOf": "https://mathstodon.xyz/users/tao/statuses/109451731409275399/replies", "items": [ "https://mathstodon.xyz/users/tao/statuses/109451784285426919" ] } }, "likes": { "id": "https://mathstodon.xyz/users/tao/statuses/109451731409275399/likes", "type": "Collection", "totalItems": 23 }, "shares": { "id": "https://mathstodon.xyz/users/tao/statuses/109451731409275399/shares", "type": "Collection", "totalItems": 9 } }