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", "blurhash": "toot:blurhash", "focalPoint": { "@container": "@list", "@id": "toot:focalPoint" }, "Hashtag": "as:Hashtag" } ], "id": "https://mastodon.sdf.org/users/screwtape/statuses/114492793643489839", "type": "Note", "summary": null, "inReplyTo": null, "published": "2025-05-12T03:43:07Z", "url": "https://mastodon.sdf.org/@screwtape/114492793643489839", "attributedTo": "https://mastodon.sdf.org/users/screwtape", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodon.sdf.org/users/screwtape/followers" ], "sensitive": false, "atomUri": "https://mastodon.sdf.org/users/screwtape/statuses/114492793643489839", "inReplyToAtomUri": null, "conversation": "tag:mastodon.sdf.org,2025-05-12:objectId=265158056:objectType=Conversation", "content": "<p><a href=\"https://mastodon.sdf.org/tags/programming\" class=\"mention hashtag\" rel=\"tag\">#<span>programming</span></a> <a href=\"https://mastodon.sdf.org/tags/gamedev\" class=\"mention hashtag\" rel=\"tag\">#<span>gamedev</span></a> <a href=\"https://mastodon.sdf.org/tags/devlog\" class=\"mention hashtag\" rel=\"tag\">#<span>devlog</span></a> <a href=\"https://mastodon.sdf.org/tags/commonLisp\" class=\"mention hashtag\" rel=\"tag\">#<span>commonLisp</span></a> <a href=\"https://mastodon.sdf.org/tags/series\" class=\"mention hashtag\" rel=\"tag\">#<span>series</span></a> <a href=\"https://mastodon.sdf.org/tags/lazyEvaluation\" class=\"mention hashtag\" rel=\"tag\">#<span>lazyEvaluation</span></a> <a href=\"https://mastodon.sdf.org/tags/functionalprogramming\" class=\"mention hashtag\" rel=\"tag\">#<span>functionalprogramming</span></a> <a href=\"https://screwlisp.small-web.org/lispgames/cl-series-for-game-logic/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">screwlisp.small-web.org/lispga</span><span class=\"invisible\">mes/cl-series-for-game-logic/</span></a> <a href=\"https://mastodon.sdf.org/tags/lispgamejam\" class=\"mention hashtag\" rel=\"tag\">#<span>lispgamejam</span></a> <br />Since cl-series generates native common lisp code by working at macro expansion time, I consider it suitable for my software individuals (who want only clos-less common lisp and their own logic (which they have an introspective theory of).</p><p>In particular, I use series to cut out rectangular subsequence of sequences -s</p><p>SERIES DOC UPDATE FROM RTOY <a href=\"https://gitlab.common-lisp.net/rtoy/cl-series/-/wikis/Series-User&#39;s-Guide\" target=\"_blank\" rel=\"nofollow noopener noreferrer\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">gitlab.common-lisp.net/rtoy/cl</span><span class=\"invisible\">-series/-/wikis/Series-User&#39;s-Guide</span></a></p>", "contentMap": { "en": "<p><a href=\"https://mastodon.sdf.org/tags/programming\" class=\"mention hashtag\" rel=\"tag\">#<span>programming</span></a> <a href=\"https://mastodon.sdf.org/tags/gamedev\" class=\"mention hashtag\" rel=\"tag\">#<span>gamedev</span></a> <a href=\"https://mastodon.sdf.org/tags/devlog\" class=\"mention hashtag\" rel=\"tag\">#<span>devlog</span></a> <a href=\"https://mastodon.sdf.org/tags/commonLisp\" class=\"mention hashtag\" rel=\"tag\">#<span>commonLisp</span></a> <a href=\"https://mastodon.sdf.org/tags/series\" class=\"mention hashtag\" rel=\"tag\">#<span>series</span></a> <a href=\"https://mastodon.sdf.org/tags/lazyEvaluation\" class=\"mention hashtag\" rel=\"tag\">#<span>lazyEvaluation</span></a> <a href=\"https://mastodon.sdf.org/tags/functionalprogramming\" class=\"mention hashtag\" rel=\"tag\">#<span>functionalprogramming</span></a> <a href=\"https://screwlisp.small-web.org/lispgames/cl-series-for-game-logic/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">screwlisp.small-web.org/lispga</span><span class=\"invisible\">mes/cl-series-for-game-logic/</span></a> <a href=\"https://mastodon.sdf.org/tags/lispgamejam\" class=\"mention hashtag\" rel=\"tag\">#<span>lispgamejam</span></a> <br />Since cl-series generates native common lisp code by working at macro expansion time, I consider it suitable for my software individuals (who want only clos-less common lisp and their own logic (which they have an introspective theory of).</p><p>In particular, I use series to cut out rectangular subsequence of sequences -s</p><p>SERIES DOC UPDATE FROM RTOY <a href=\"https://gitlab.common-lisp.net/rtoy/cl-series/-/wikis/Series-User&#39;s-Guide\" target=\"_blank\" rel=\"nofollow noopener noreferrer\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">gitlab.common-lisp.net/rtoy/cl</span><span class=\"invisible\">-series/-/wikis/Series-User&#39;s-Guide</span></a></p>" }, "updated": "2025-05-12T05:56:53Z", "attachment": [ { "type": "Document", "mediaType": "image/png", "url": "https://mastodon.sdf.org/system/media_attachments/files/114/492/790/879/352/251/original/1e94b9be4704cd4c.png", "name": "(series::let*\n ((S (series::scan (cadr sequence)))\n (nos (series::scan-range))\n (mask1 (#M<= (series::series\n\t\t(+ row dr1))\n\t nos))\n (mask2 (#M< nos\n\t (series::series\n\t (+ row dr2))))\n (lists (#Mcadr S))\n (sublists (#Msubseq\n\t lists\n\t (series::series\n\t (+ col dc1))\n\t (series::series\n\t (+ col dc2)))))\n (series::collect\n (series::choose\n (#Mand mask1 mask2 nos)\n (#Mcons nos sublists))))", "blurhash": "UASF;LWB~qayfQfQM{WBIURjRjt7t7ofRjRj", "focalPoint": [ -0.57, 1 ], "width": 476, "height": 462 } ], "tag": [ { "type": "Hashtag", "href": "https://mastodon.sdf.org/tags/programming", "name": "#programming" }, { "type": "Hashtag", "href": "https://mastodon.sdf.org/tags/gamedev", "name": "#gamedev" }, { "type": "Hashtag", "href": "https://mastodon.sdf.org/tags/devlog", "name": "#devlog" }, { "type": "Hashtag", "href": "https://mastodon.sdf.org/tags/commonlisp", "name": "#commonlisp" }, { "type": "Hashtag", "href": "https://mastodon.sdf.org/tags/series", "name": "#series" }, { "type": "Hashtag", "href": "https://mastodon.sdf.org/tags/lazyevaluation", "name": "#lazyevaluation" }, { "type": "Hashtag", "href": "https://mastodon.sdf.org/tags/functionalprogramming", "name": "#functionalprogramming" }, { "type": "Hashtag", "href": "https://mastodon.sdf.org/tags/lispgamejam", "name": "#lispgamejam" } ], "replies": { "id": "https://mastodon.sdf.org/users/screwtape/statuses/114492793643489839/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mastodon.sdf.org/users/screwtape/statuses/114492793643489839/replies?only_other_accounts=true&page=true", "partOf": "https://mastodon.sdf.org/users/screwtape/statuses/114492793643489839/replies", "items": [] } } }