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://halo.nu/users/theguardian_science/statuses/114145705451478191", "type": "Note", "summary": null, "inReplyTo": null, "published": "2025-03-11T20:34:01Z", "url": "https://halo.nu/@theguardian_science/114145705451478191", "attributedTo": "https://halo.nu/users/theguardian_science", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://halo.nu/users/theguardian_science/followers" ], "sensitive": false, "atomUri": "https://halo.nu/users/theguardian_science/statuses/114145705451478191", "inReplyToAtomUri": null, "conversation": "tag:halo.nu,2025-03-11:objectId=306883:objectType=Conversation", "content": "<p>Astronomers discover 128 new moons orbiting Saturn <a href=\"https://www.theguardian.com/science/2025/mar/11/astronomers-discover-128-new-moons-orbiting-saturn\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">theguardian.com/science/2025/m</span><span class=\"invisible\">ar/11/astronomers-discover-128-new-moons-orbiting-saturn</span></a> <a href=\"https://halo.nu/tags/EuropeanSpaceAgency\" class=\"mention hashtag\" rel=\"tag\">#<span>EuropeanSpaceAgency</span></a> <a href=\"https://halo.nu/tags/Astronomy\" class=\"mention hashtag\" rel=\"tag\">#<span>Astronomy</span></a> <a href=\"https://halo.nu/tags/Science\" class=\"mention hashtag\" rel=\"tag\">#<span>Science</span></a> <a href=\"https://halo.nu/tags/Saturn\" class=\"mention hashtag\" rel=\"tag\">#<span>Saturn</span></a> <a href=\"https://halo.nu/tags/Space\" class=\"mention hashtag\" rel=\"tag\">#<span>Space</span></a></p>", "contentMap": { "en": "<p>Astronomers discover 128 new moons orbiting Saturn <a href=\"https://www.theguardian.com/science/2025/mar/11/astronomers-discover-128-new-moons-orbiting-saturn\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">theguardian.com/science/2025/m</span><span class=\"invisible\">ar/11/astronomers-discover-128-new-moons-orbiting-saturn</span></a> <a href=\"https://halo.nu/tags/EuropeanSpaceAgency\" class=\"mention hashtag\" rel=\"tag\">#<span>EuropeanSpaceAgency</span></a> <a href=\"https://halo.nu/tags/Astronomy\" class=\"mention hashtag\" rel=\"tag\">#<span>Astronomy</span></a> <a href=\"https://halo.nu/tags/Science\" class=\"mention hashtag\" rel=\"tag\">#<span>Science</span></a> <a href=\"https://halo.nu/tags/Saturn\" class=\"mention hashtag\" rel=\"tag\">#<span>Saturn</span></a> <a href=\"https://halo.nu/tags/Space\" class=\"mention hashtag\" rel=\"tag\">#<span>Space</span></a></p>" }, "attachment": [], "tag": [ { "type": "Hashtag", "href": "https://halo.nu/tags/europeanspaceagency", "name": "#europeanspaceagency" }, { "type": "Hashtag", "href": "https://halo.nu/tags/astronomy", "name": "#astronomy" }, { "type": "Hashtag", "href": "https://halo.nu/tags/science", "name": "#science" }, { "type": "Hashtag", "href": "https://halo.nu/tags/saturn", "name": "#saturn" }, { "type": "Hashtag", "href": "https://halo.nu/tags/space", "name": "#space" } ], "replies": { "id": "https://halo.nu/users/theguardian_science/statuses/114145705451478191/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://halo.nu/users/theguardian_science/statuses/114145705451478191/replies?only_other_accounts=true&page=true", "partOf": "https://halo.nu/users/theguardian_science/statuses/114145705451478191/replies", "items": [] } } }