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.social/users/AstroHyde/collections/featured", "type": "OrderedCollection", "totalItems": 3, "orderedItems": [ { "id": "https://mastodon.social/users/AstroHyde/statuses/114326489548844401", "type": "Note", "summary": null, "inReplyTo": null, "published": "2025-04-12T18:49:48Z", "url": "https://mastodon.social/@AstroHyde/114326489548844401", "attributedTo": "https://mastodon.social/users/AstroHyde", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodon.social/users/AstroHyde/followers" ], "sensitive": false, "atomUri": "https://mastodon.social/users/AstroHyde/statuses/114326489548844401", "inReplyToAtomUri": null, "conversation": "tag:mastodon.social,2025-04-12:objectId=970695126:objectType=Conversation", "content": "<p>First pictures back in after the telescope mirror cleaning and it&#39;s absolutely the best type of lunacy that I&#39;ve seen in months 🌟 🌙 <a href=\"https://mastodon.social/tags/astronomy\" class=\"mention hashtag\" rel=\"tag\">#<span>astronomy</span></a> <a href=\"https://mastodon.social/tags/Astrodon\" class=\"mention hashtag\" rel=\"tag\">#<span>Astrodon</span></a> <a href=\"https://mastodon.social/tags/astro\" class=\"mention hashtag\" rel=\"tag\">#<span>astro</span></a> <a href=\"https://mastodon.social/tags/moon\" class=\"mention hashtag\" rel=\"tag\">#<span>moon</span></a> <a href=\"https://mastodon.social/tags/telescopes\" class=\"mention hashtag\" rel=\"tag\">#<span>telescopes</span></a> <a href=\"https://mastodon.social/tags/science\" class=\"mention hashtag\" rel=\"tag\">#<span>science</span></a> <a href=\"https://mastodon.social/tags/lunar\" class=\"mention hashtag\" rel=\"tag\">#<span>lunar</span></a> <a href=\"https://mastodon.social/tags/moonlight\" class=\"mention hashtag\" rel=\"tag\">#<span>moonlight</span></a> <a href=\"https://mastodon.social/tags/yorkuniversity\" class=\"mention hashtag\" rel=\"tag\">#<span>yorkuniversity</span></a> <a href=\"https://mastodon.social/tags/LunarPhotography\" class=\"mention hashtag\" rel=\"tag\">#<span>LunarPhotography</span></a></p>", "contentMap": { "en": "<p>First pictures back in after the telescope mirror cleaning and it&#39;s absolutely the best type of lunacy that I&#39;ve seen in months 🌟 🌙 <a href=\"https://mastodon.social/tags/astronomy\" class=\"mention hashtag\" rel=\"tag\">#<span>astronomy</span></a> <a href=\"https://mastodon.social/tags/Astrodon\" class=\"mention hashtag\" rel=\"tag\">#<span>Astrodon</span></a> <a href=\"https://mastodon.social/tags/astro\" class=\"mention hashtag\" rel=\"tag\">#<span>astro</span></a> <a href=\"https://mastodon.social/tags/moon\" class=\"mention hashtag\" rel=\"tag\">#<span>moon</span></a> <a href=\"https://mastodon.social/tags/telescopes\" class=\"mention hashtag\" rel=\"tag\">#<span>telescopes</span></a> <a href=\"https://mastodon.social/tags/science\" class=\"mention hashtag\" rel=\"tag\">#<span>science</span></a> <a href=\"https://mastodon.social/tags/lunar\" class=\"mention hashtag\" rel=\"tag\">#<span>lunar</span></a> <a href=\"https://mastodon.social/tags/moonlight\" class=\"mention hashtag\" rel=\"tag\">#<span>moonlight</span></a> <a href=\"https://mastodon.social/tags/yorkuniversity\" class=\"mention hashtag\" rel=\"tag\">#<span>yorkuniversity</span></a> <a href=\"https://mastodon.social/tags/LunarPhotography\" class=\"mention hashtag\" rel=\"tag\">#<span>LunarPhotography</span></a></p>" }, "attachment": [ { "type": "Document", "mediaType": "image/jpeg", "url": "https://files.mastodon.social/media_attachments/files/114/326/478/233/815/182/original/76f759a7a1b55854.jpg", "name": "A picture of the edge of the moon taken with the 1m telescope at the Allan I Carswell Observatory at York University, only part of the moon is visible due to the relatively small field of view of the telescope ", "blurhash": "UH9@Lz02%LRk?aIVs:WCD*%LRkoet6M|xtWC", "width": 2048, "height": 1536 } ], "tag": [ { "type": "Hashtag", "href": "https://mastodon.social/tags/astronomy", "name": "#astronomy" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/Astrodon", "name": "#Astrodon" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/astro", "name": "#astro" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/moon", "name": "#moon" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/telescopes", "name": "#telescopes" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/science", "name": "#science" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/lunar", "name": "#lunar" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/moonlight", "name": "#moonlight" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/yorkuniversity", "name": "#yorkuniversity" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/LunarPhotography", "name": "#LunarPhotography" } ], "replies": { "id": "https://mastodon.social/users/AstroHyde/statuses/114326489548844401/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mastodon.social/users/AstroHyde/statuses/114326489548844401/replies?only_other_accounts=true&page=true", "partOf": "https://mastodon.social/users/AstroHyde/statuses/114326489548844401/replies", "items": [] } }, "likes": { "id": "https://mastodon.social/users/AstroHyde/statuses/114326489548844401/likes", "type": "Collection", "totalItems": 18 }, "shares": { "id": "https://mastodon.social/users/AstroHyde/statuses/114326489548844401/shares", "type": "Collection", "totalItems": 4 } }, { "id": "https://mastodon.social/users/AstroHyde/statuses/111677159138087628", "type": "Note", "summary": null, "inReplyTo": null, "published": "2023-12-31T21:30:14Z", "url": "https://mastodon.social/@AstroHyde/111677159138087628", "attributedTo": "https://mastodon.social/users/AstroHyde", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodon.social/users/AstroHyde/followers" ], "sensitive": false, "atomUri": "https://mastodon.social/users/AstroHyde/statuses/111677159138087628", "inReplyToAtomUri": null, "conversation": "tag:mastodon.social,2023-12-31:objectId=610569938:objectType=Conversation", "content": "<p>2023 in review! My first ever yearly director’s newsletter has been published and is available now. Read all about some of our biggest adventures over this last year: <a href=\"https://www.yorku.ca/science/observatory/\" target=\"_blank\" rel=\"nofollow noopener\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"\">yorku.ca/science/observatory/</span><span class=\"invisible\"></span></a> <a href=\"https://mastodon.social/tags/Astrodon\" class=\"mention hashtag\" rel=\"tag\">#<span>Astrodon</span></a> <a href=\"https://mastodon.social/tags/astronomy\" class=\"mention hashtag\" rel=\"tag\">#<span>astronomy</span></a> <a href=\"https://mastodon.social/tags/2023Recap\" class=\"mention hashtag\" rel=\"tag\">#<span>2023Recap</span></a> <a href=\"https://mastodon.social/tags/observatory\" class=\"mention hashtag\" rel=\"tag\">#<span>observatory</span></a> <a href=\"https://mastodon.social/tags/2023inreview\" class=\"mention hashtag\" rel=\"tag\">#<span>2023inreview</span></a> <a href=\"https://mastodon.social/tags/newyearseve\" class=\"mention hashtag\" rel=\"tag\">#<span>newyearseve</span></a></p>", "contentMap": { "en": "<p>2023 in review! My first ever yearly director’s newsletter has been published and is available now. Read all about some of our biggest adventures over this last year: <a href=\"https://www.yorku.ca/science/observatory/\" target=\"_blank\" rel=\"nofollow noopener\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"\">yorku.ca/science/observatory/</span><span class=\"invisible\"></span></a> <a href=\"https://mastodon.social/tags/Astrodon\" class=\"mention hashtag\" rel=\"tag\">#<span>Astrodon</span></a> <a href=\"https://mastodon.social/tags/astronomy\" class=\"mention hashtag\" rel=\"tag\">#<span>astronomy</span></a> <a href=\"https://mastodon.social/tags/2023Recap\" class=\"mention hashtag\" rel=\"tag\">#<span>2023Recap</span></a> <a href=\"https://mastodon.social/tags/observatory\" class=\"mention hashtag\" rel=\"tag\">#<span>observatory</span></a> <a href=\"https://mastodon.social/tags/2023inreview\" class=\"mention hashtag\" rel=\"tag\">#<span>2023inreview</span></a> <a href=\"https://mastodon.social/tags/newyearseve\" class=\"mention hashtag\" rel=\"tag\">#<span>newyearseve</span></a></p>" }, "attachment": [], "tag": [ { "type": "Hashtag", "href": "https://mastodon.social/tags/Astrodon", "name": "#Astrodon" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/astronomy", "name": "#astronomy" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/2023recap", "name": "#2023recap" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/observatory", "name": "#observatory" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/2023inreview", "name": "#2023inreview" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/newyearseve", "name": "#newyearseve" } ], "replies": { "id": "https://mastodon.social/users/AstroHyde/statuses/111677159138087628/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mastodon.social/users/AstroHyde/statuses/111677159138087628/replies?only_other_accounts=true&page=true", "partOf": "https://mastodon.social/users/AstroHyde/statuses/111677159138087628/replies", "items": [] } }, "likes": { "id": "https://mastodon.social/users/AstroHyde/statuses/111677159138087628/likes", "type": "Collection", "totalItems": 4 }, "shares": { "id": "https://mastodon.social/users/AstroHyde/statuses/111677159138087628/shares", "type": "Collection", "totalItems": 3 } }, { "id": "https://mastodon.social/users/AstroHyde/statuses/111743821141719397", "type": "Note", "summary": null, "inReplyTo": null, "published": "2024-01-12T16:03:15Z", "url": "https://mastodon.social/@AstroHyde/111743821141719397", "attributedTo": "https://mastodon.social/users/AstroHyde", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodon.social/users/AstroHyde/followers" ], "sensitive": false, "atomUri": "https://mastodon.social/users/AstroHyde/statuses/111743821141719397", "inReplyToAtomUri": null, "conversation": "tag:mastodon.social,2024-01-12:objectId=618756695:objectType=Conversation", "content": "<p>Do observatories have the best windows ever? (Yes)<br />Is this a trick question? (Certainly, there&#39;s a trick to it)<br />... this conversation with myself brought to you by an amazing clear spot in the clouds at AICO in <a href=\"https://mastodon.social/tags/Toronto\" class=\"mention hashtag\" rel=\"tag\">#<span>Toronto</span></a> last night, and of course, the lovely 60cm <a href=\"https://mastodon.social/tags/telescope\" class=\"mention hashtag\" rel=\"tag\">#<span>telescope</span></a> <a href=\"https://mastodon.social/tags/Fensterfreitag\" class=\"mention hashtag\" rel=\"tag\">#<span>Fensterfreitag</span></a> <a href=\"https://mastodon.social/tags/observatory\" class=\"mention hashtag\" rel=\"tag\">#<span>observatory</span></a> <a href=\"https://mastodon.social/tags/Astrodon\" class=\"mention hashtag\" rel=\"tag\">#<span>Astrodon</span></a> <a href=\"https://mastodon.social/tags/fridayfeeling\" class=\"mention hashtag\" rel=\"tag\">#<span>fridayfeeling</span></a></p>", "contentMap": { "en": "<p>Do observatories have the best windows ever? (Yes)<br />Is this a trick question? (Certainly, there&#39;s a trick to it)<br />... this conversation with myself brought to you by an amazing clear spot in the clouds at AICO in <a href=\"https://mastodon.social/tags/Toronto\" class=\"mention hashtag\" rel=\"tag\">#<span>Toronto</span></a> last night, and of course, the lovely 60cm <a href=\"https://mastodon.social/tags/telescope\" class=\"mention hashtag\" rel=\"tag\">#<span>telescope</span></a> <a href=\"https://mastodon.social/tags/Fensterfreitag\" class=\"mention hashtag\" rel=\"tag\">#<span>Fensterfreitag</span></a> <a href=\"https://mastodon.social/tags/observatory\" class=\"mention hashtag\" rel=\"tag\">#<span>observatory</span></a> <a href=\"https://mastodon.social/tags/Astrodon\" class=\"mention hashtag\" rel=\"tag\">#<span>Astrodon</span></a> <a href=\"https://mastodon.social/tags/fridayfeeling\" class=\"mention hashtag\" rel=\"tag\">#<span>fridayfeeling</span></a></p>" }, "updated": "2024-01-12T16:11:07Z", "attachment": [ { "type": "Document", "mediaType": "image/jpeg", "url": "https://files.mastodon.social/media_attachments/files/111/743/800/583/447/920/original/5c6b9adf28691950.jpg", "name": "The 60cm telescope at AICO points out the open 'window' of the shutter on a clear night. Credit: AICO ", "blurhash": "UEA,H|kD0gn$58WB%0fkIpn~t5t6%1j[R+oK", "width": 2048, "height": 1536 } ], "tag": [ { "type": "Hashtag", "href": "https://mastodon.social/tags/toronto", "name": "#toronto" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/telescope", "name": "#telescope" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/fensterfreitag", "name": "#fensterfreitag" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/observatory", "name": "#observatory" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/Astrodon", "name": "#Astrodon" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/fridayfeeling", "name": "#fridayfeeling" } ], "replies": { "id": "https://mastodon.social/users/AstroHyde/statuses/111743821141719397/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mastodon.social/users/AstroHyde/statuses/111743821141719397/replies?only_other_accounts=true&page=true", "partOf": "https://mastodon.social/users/AstroHyde/statuses/111743821141719397/replies", "items": [] } }, "likes": { "id": "https://mastodon.social/users/AstroHyde/statuses/111743821141719397/likes", "type": "Collection", "totalItems": 32 }, "shares": { "id": "https://mastodon.social/users/AstroHyde/statuses/111743821141719397/shares", "type": "Collection", "totalItems": 11 } } ] }