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.

Open in browser →
{ "@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", "expiry": "toot:expiry", "Hashtag": "as:Hashtag" } ], "id": "https://qoto.org/users/bibliolater/statuses/114310496178026706", "type": "Note", "summary": null, "inReplyTo": null, "published": "2025-04-09T23:02:28Z", "url": "https://qoto.org/@bibliolater/114310496178026706", "attributedTo": "https://qoto.org/users/bibliolater", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://qoto.org/users/bibliolater/followers" ], "sensitive": false, "atomUri": "https://qoto.org/users/bibliolater/statuses/114310496178026706", "inReplyToAtomUri": null, "conversation": "tag:qoto.org,2025-04-09:objectId=114310496178042845:objectType=Conversation", "context": "https://qoto.org/contexts/114310496178042845", "content": "<p>🔴 **Descartes’ Mathematics**</p><p>“_In La Géométrie, Descartes details a groundbreaking program for geometrical problem-solving—what he refers to as a “geometrical calculus” (calcul géométrique)—that rests on a distinctive approach to the relationship between algebra and geometry._”</p><p>Domski, Mary, “Descartes’ Mathematics”, The Stanford Encyclopedia of Philosophy (Summer 2025 Edition), Edward N. Zalta &amp; Uri Nodelman (eds.), forthcoming URL = &lt;<a href=\"https://plato.stanford.edu/archives/sum2025/entries/descartes-mathematics/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">plato.stanford.edu/archives/su</span><span class=\"invisible\">m2025/entries/descartes-mathematics/</span></a>&gt;. </p><p><a href=\"https://qoto.org/tags/Descartes\" class=\"mention hashtag\" rel=\"tag\">#<span>Descartes</span></a> <a href=\"https://qoto.org/tags/History\" class=\"mention hashtag\" rel=\"tag\">#<span>History</span></a> <a href=\"https://qoto.org/tags/HistSci\" class=\"mention hashtag\" rel=\"tag\">#<span>HistSci</span></a> <a href=\"https://qoto.org/tags/Maths\" class=\"mention hashtag\" rel=\"tag\">#<span>Maths</span></a> <a href=\"https://qoto.org/tags/Mathematics\" class=\"mention hashtag\" rel=\"tag\">#<span>Mathematics</span></a> <a href=\"https://qoto.org/tags/Math\" class=\"mention hashtag\" rel=\"tag\">#<span>Math</span></a> <a href=\"https://qoto.org/tags/Algebra\" class=\"mention hashtag\" rel=\"tag\">#<span>Algebra</span></a> <a href=\"https://qoto.org/tags/Geometry\" class=\"mention hashtag\" rel=\"tag\">#<span>Geometry</span></a></p>", "contentMap": { "en": "<p>🔴 **Descartes’ Mathematics**</p><p>“_In La Géométrie, Descartes details a groundbreaking program for geometrical problem-solving—what he refers to as a “geometrical calculus” (calcul géométrique)—that rests on a distinctive approach to the relationship between algebra and geometry._”</p><p>Domski, Mary, “Descartes’ Mathematics”, The Stanford Encyclopedia of Philosophy (Summer 2025 Edition), Edward N. Zalta &amp; Uri Nodelman (eds.), forthcoming URL = &lt;<a href=\"https://plato.stanford.edu/archives/sum2025/entries/descartes-mathematics/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">plato.stanford.edu/archives/su</span><span class=\"invisible\">m2025/entries/descartes-mathematics/</span></a>&gt;. </p><p><a href=\"https://qoto.org/tags/Descartes\" class=\"mention hashtag\" rel=\"tag\">#<span>Descartes</span></a> <a href=\"https://qoto.org/tags/History\" class=\"mention hashtag\" rel=\"tag\">#<span>History</span></a> <a href=\"https://qoto.org/tags/HistSci\" class=\"mention hashtag\" rel=\"tag\">#<span>HistSci</span></a> <a href=\"https://qoto.org/tags/Maths\" class=\"mention hashtag\" rel=\"tag\">#<span>Maths</span></a> <a href=\"https://qoto.org/tags/Mathematics\" class=\"mention hashtag\" rel=\"tag\">#<span>Mathematics</span></a> <a href=\"https://qoto.org/tags/Math\" class=\"mention hashtag\" rel=\"tag\">#<span>Math</span></a> <a href=\"https://qoto.org/tags/Algebra\" class=\"mention hashtag\" rel=\"tag\">#<span>Algebra</span></a> <a href=\"https://qoto.org/tags/Geometry\" class=\"mention hashtag\" rel=\"tag\">#<span>Geometry</span></a></p>" }, "attachment": [], "tag": [ { "type": "Hashtag", "href": "https://qoto.org/tags/descartes", "name": "#descartes" }, { "type": "Hashtag", "href": "https://qoto.org/tags/history", "name": "#history" }, { "type": "Hashtag", "href": "https://qoto.org/tags/histsci", "name": "#histsci" }, { "type": "Hashtag", "href": "https://qoto.org/tags/maths", "name": "#maths" }, { "type": "Hashtag", "href": "https://qoto.org/tags/mathematics", "name": "#mathematics" }, { "type": "Hashtag", "href": "https://qoto.org/tags/math", "name": "#math" }, { "type": "Hashtag", "href": "https://qoto.org/tags/algebra", "name": "#algebra" }, { "type": "Hashtag", "href": "https://qoto.org/tags/geometry", "name": "#geometry" } ], "replies": { "id": "https://qoto.org/users/bibliolater/statuses/114310496178026706/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://qoto.org/users/bibliolater/statuses/114310496178026706/replies?only_other_accounts=true&page=true", "partOf": "https://qoto.org/users/bibliolater/statuses/114310496178026706/replies", "items": [] } } }