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/varkor/statuses/109479305369084244", "type": "Note", "summary": null, "inReplyTo": "https://mathstodon.xyz/users/ltchen/statuses/109478851421119293", "published": "2022-12-08T17:47:07Z", "url": "https://mathstodon.xyz/@varkor/109479305369084244", "attributedTo": "https://mathstodon.xyz/users/varkor", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/varkor/followers", "https://mathstodon.xyz/users/ltchen" ], "sensitive": false, "atomUri": "https://mathstodon.xyz/users/varkor/statuses/109479305369084244", "inReplyToAtomUri": "https://mathstodon.xyz/users/ltchen/statuses/109478851421119293", "conversation": "tag:mathstodon.xyz,2022-12-08:objectId=32612759:objectType=Conversation", "content": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mathstodon.xyz/@ltchen\" class=\"u-url mention\">@<span>ltchen</span></a></span> While there is a standard definition of &quot;category&quot;, there is no standard definition of &quot;type theory&quot;/&quot;deductive system&quot; (though there are many candidates). However, if you pick a specific framework (e.g. generalised algebraic theories), then one can give a general type theoretic definition of product just as easily as one gives the category theoretic definition of product.</p><p>Historically, studying &quot;type theories&quot; in general has not been popular, though it is becoming more fashionable now.</p>", "contentMap": { "en": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mathstodon.xyz/@ltchen\" class=\"u-url mention\">@<span>ltchen</span></a></span> While there is a standard definition of &quot;category&quot;, there is no standard definition of &quot;type theory&quot;/&quot;deductive system&quot; (though there are many candidates). However, if you pick a specific framework (e.g. generalised algebraic theories), then one can give a general type theoretic definition of product just as easily as one gives the category theoretic definition of product.</p><p>Historically, studying &quot;type theories&quot; in general has not been popular, though it is becoming more fashionable now.</p>" }, "attachment": [], "tag": [ { "type": "Mention", "href": "https://mathstodon.xyz/users/ltchen", "name": "@ltchen" } ], "replies": { "id": "https://mathstodon.xyz/users/varkor/statuses/109479305369084244/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mathstodon.xyz/users/varkor/statuses/109479305369084244/replies?only_other_accounts=true&page=true", "partOf": "https://mathstodon.xyz/users/varkor/statuses/109479305369084244/replies", "items": [] } }, "likes": { "id": "https://mathstodon.xyz/users/varkor/statuses/109479305369084244/likes", "type": "Collection", "totalItems": 7 }, "shares": { "id": "https://mathstodon.xyz/users/varkor/statuses/109479305369084244/shares", "type": "Collection", "totalItems": 1 } }