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", "Hashtag": "as:Hashtag" } ], "id": "https://mastodon.social/users/romazzino/statuses/114596267777769508", "type": "Note", "summary": null, "inReplyTo": null, "published": "2025-05-30T10:17:57Z", "url": "https://mastodon.social/@romazzino/114596267777769508", "attributedTo": "https://mastodon.social/users/romazzino", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodon.social/users/romazzino/followers", "https://mastodon.social/users/openscience" ], "sensitive": false, "atomUri": "https://mastodon.social/users/romazzino/statuses/114596267777769508", "inReplyToAtomUri": null, "conversation": "tag:mastodon.social,2025-05-30:objectId=1010146699:objectType=Conversation", "content": "<p>🛰️ New pre-print: “Barycentric Dynamic Equilibrium Theory — A Unified Framework for Gravitational Coupling &amp; Complex-Systems Dynamics.”</p><p>Predicts the flyby anomaly (&lt;3 % error) and links local inertial frames to cosmic barycentric motion.</p><p>PDF ▶️ <a href=\"https://zenodo.org/records/15392179/files/BDET_sup_v1_1.pdf?download=1\" target=\"_blank\" rel=\"nofollow noopener\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">zenodo.org/records/15392179/fi</span><span class=\"invisible\">les/BDET_sup_v1_1.pdf?download=1</span></a><br /><a href=\"https://mastodon.social/tags/FlybyAnomaly\" class=\"mention hashtag\" rel=\"tag\">#<span>FlybyAnomaly</span></a> <a href=\"https://mastodon.social/tags/Gravity\" class=\"mention hashtag\" rel=\"tag\">#<span>Gravity</span></a> <a href=\"https://mastodon.social/tags/ComplexSystems\" class=\"mention hashtag\" rel=\"tag\">#<span>ComplexSystems</span></a> <a href=\"https://mastodon.social/tags/OpenScience\" class=\"mention hashtag\" rel=\"tag\">#<span>OpenScience</span></a><br /><span class=\"h-card\" translate=\"no\"><a href=\"https://mastodon.social/@openscience\" class=\"u-url mention\">@<span>openscience</span></a></span></p>", "contentMap": { "en": "<p>🛰️ New pre-print: “Barycentric Dynamic Equilibrium Theory — A Unified Framework for Gravitational Coupling &amp; Complex-Systems Dynamics.”</p><p>Predicts the flyby anomaly (&lt;3 % error) and links local inertial frames to cosmic barycentric motion.</p><p>PDF ▶️ <a href=\"https://zenodo.org/records/15392179/files/BDET_sup_v1_1.pdf?download=1\" target=\"_blank\" rel=\"nofollow noopener\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">zenodo.org/records/15392179/fi</span><span class=\"invisible\">les/BDET_sup_v1_1.pdf?download=1</span></a><br /><a href=\"https://mastodon.social/tags/FlybyAnomaly\" class=\"mention hashtag\" rel=\"tag\">#<span>FlybyAnomaly</span></a> <a href=\"https://mastodon.social/tags/Gravity\" class=\"mention hashtag\" rel=\"tag\">#<span>Gravity</span></a> <a href=\"https://mastodon.social/tags/ComplexSystems\" class=\"mention hashtag\" rel=\"tag\">#<span>ComplexSystems</span></a> <a href=\"https://mastodon.social/tags/OpenScience\" class=\"mention hashtag\" rel=\"tag\">#<span>OpenScience</span></a><br /><span class=\"h-card\" translate=\"no\"><a href=\"https://mastodon.social/@openscience\" class=\"u-url mention\">@<span>openscience</span></a></span></p>" }, "updated": "2025-06-01T02:14:33Z", "attachment": [], "tag": [ { "type": "Mention", "href": "https://mastodon.social/users/openscience", "name": "@openscience" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/flybyanomaly", "name": "#flybyanomaly" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/gravity", "name": "#gravity" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/complexsystems", "name": "#complexsystems" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/openscience", "name": "#openscience" } ], "replies": { "id": "https://mastodon.social/users/romazzino/statuses/114596267777769508/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mastodon.social/users/romazzino/statuses/114596267777769508/replies?min_id=114596678302292954&page=true", "partOf": "https://mastodon.social/users/romazzino/statuses/114596267777769508/replies", "items": [ "https://mastodon.social/users/romazzino/statuses/114596678302292954" ] } }, "likes": { "id": "https://mastodon.social/users/romazzino/statuses/114596267777769508/likes", "type": "Collection", "totalItems": 1 }, "shares": { "id": "https://mastodon.social/users/romazzino/statuses/114596267777769508/shares", "type": "Collection", "totalItems": 0 } }