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/dlzv/statuses/109291072504203277/activity", "type": "Create", "actor": "https://mathstodon.xyz/users/dlzv", "published": "2022-11-05T11:57:01Z", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/dlzv/followers" ], "object": { "id": "https://mathstodon.xyz/users/dlzv/statuses/109291072504203277", "type": "Note", "summary": null, "inReplyTo": "https://mathstodon.xyz/users/dlzv/statuses/109291071352945761", "published": "2022-11-05T11:57:01Z", "url": "https://mathstodon.xyz/@dlzv/109291072504203277", "attributedTo": "https://mathstodon.xyz/users/dlzv", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/dlzv/followers" ], "sensitive": false, "atomUri": "https://mathstodon.xyz/users/dlzv/statuses/109291072504203277", "inReplyToAtomUri": "https://mathstodon.xyz/users/dlzv/statuses/109291071352945761", "conversation": "tag:mathstodon.xyz,2022-11-05:objectId=28369321:objectType=Conversation", "content": "<p>The general idea is to extend traditional matrix multiplication on ℕ, ℝ, or ℂ to arbitrary semirings: C = AB = A⊕.⊗B.<br />Each semiring can then be used for specific algorithms/use cases:<br />- the standard semiring (+, ×) can be used to compute graph traversals (e.g. number of paths)<br />- the tropical semiring (min, +) can be used to compute shortest paths<br />- (∩, ∪) for set operations, useful for database applications<br />- and many more!<br />(3/n)</p>", "contentMap": { "en": "<p>The general idea is to extend traditional matrix multiplication on ℕ, ℝ, or ℂ to arbitrary semirings: C = AB = A⊕.⊗B.<br />Each semiring can then be used for specific algorithms/use cases:<br />- the standard semiring (+, ×) can be used to compute graph traversals (e.g. number of paths)<br />- the tropical semiring (min, +) can be used to compute shortest paths<br />- (∩, ∪) for set operations, useful for database applications<br />- and many more!<br />(3/n)</p>" }, "attachment": [], "tag": [], "replies": { "id": "https://mathstodon.xyz/users/dlzv/statuses/109291072504203277/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mathstodon.xyz/users/dlzv/statuses/109291072504203277/replies?min_id=109291080358852743&page=true", "partOf": "https://mathstodon.xyz/users/dlzv/statuses/109291072504203277/replies", "items": [ "https://mathstodon.xyz/users/dlzv/statuses/109291080358852743" ] } }, "likes": { "id": "https://mathstodon.xyz/users/dlzv/statuses/109291072504203277/likes", "type": "Collection", "totalItems": 5 }, "shares": { "id": "https://mathstodon.xyz/users/dlzv/statuses/109291072504203277/shares", "type": "Collection", "totalItems": 0 } } }