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/Impish4249/statuses/114070281356289843", "type": "Note", "summary": null, "inReplyTo": "https://mastodon.world/users/davidnjoku/statuses/114070113330101050", "published": "2025-02-26T12:52:41Z", "url": "https://mastodon.social/@Impish4249/114070281356289843", "attributedTo": "https://mastodon.social/users/Impish4249", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodon.social/users/Impish4249/followers", "https://mastodon.world/users/davidnjoku" ], "sensitive": false, "atomUri": "https://mastodon.social/users/Impish4249/statuses/114070281356289843", "inReplyToAtomUri": "https://mastodon.world/users/davidnjoku/statuses/114070113330101050", "conversation": "tag:mastodon.world,2025-02-26:objectId=378901207:objectType=Conversation", "content": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mastodon.world/@davidnjoku\" class=\"u-url mention\">@<span>davidnjoku</span></a></span> </p><p>Funny on its face but just think about all of the far more serious hacking possibilities, like an air traffic control system saying &quot;cross the runway&quot; instead of &quot;do not cross the runway&quot; or a missile defense system saying &quot;fire&quot; instead of &quot;do not fire&quot; just to take two unrelated items out of my news feed today and mash them up here. </p><p><a href=\"https://mastodon.social/tags/AI\" class=\"mention hashtag\" rel=\"tag\">#<span>AI</span></a> <a href=\"https://mastodon.social/tags/hacking\" class=\"mention hashtag\" rel=\"tag\">#<span>hacking</span></a> <a href=\"https://mastodon.social/tags/reliability\" class=\"mention hashtag\" rel=\"tag\">#<span>reliability</span></a> <a href=\"https://mastodon.social/tags/security\" class=\"mention hashtag\" rel=\"tag\">#<span>security</span></a> <a href=\"https://mastodon.social/tags/defense\" class=\"mention hashtag\" rel=\"tag\">#<span>defense</span></a> <a href=\"https://mastodon.social/tags/ATC\" class=\"mention hashtag\" rel=\"tag\">#<span>ATC</span></a></p>", "contentMap": { "en": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://mastodon.world/@davidnjoku\" class=\"u-url mention\">@<span>davidnjoku</span></a></span> </p><p>Funny on its face but just think about all of the far more serious hacking possibilities, like an air traffic control system saying &quot;cross the runway&quot; instead of &quot;do not cross the runway&quot; or a missile defense system saying &quot;fire&quot; instead of &quot;do not fire&quot; just to take two unrelated items out of my news feed today and mash them up here. </p><p><a href=\"https://mastodon.social/tags/AI\" class=\"mention hashtag\" rel=\"tag\">#<span>AI</span></a> <a href=\"https://mastodon.social/tags/hacking\" class=\"mention hashtag\" rel=\"tag\">#<span>hacking</span></a> <a href=\"https://mastodon.social/tags/reliability\" class=\"mention hashtag\" rel=\"tag\">#<span>reliability</span></a> <a href=\"https://mastodon.social/tags/security\" class=\"mention hashtag\" rel=\"tag\">#<span>security</span></a> <a href=\"https://mastodon.social/tags/defense\" class=\"mention hashtag\" rel=\"tag\">#<span>defense</span></a> <a href=\"https://mastodon.social/tags/ATC\" class=\"mention hashtag\" rel=\"tag\">#<span>ATC</span></a></p>" }, "attachment": [], "tag": [ { "type": "Mention", "href": "https://mastodon.world/users/davidnjoku", "name": "@davidnjoku@mastodon.world" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/ai", "name": "#ai" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/hacking", "name": "#hacking" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/reliability", "name": "#reliability" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/security", "name": "#security" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/defense", "name": "#defense" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/atc", "name": "#atc" } ], "replies": { "id": "https://mastodon.social/users/Impish4249/statuses/114070281356289843/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mastodon.social/users/Impish4249/statuses/114070281356289843/replies?only_other_accounts=true&page=true", "partOf": "https://mastodon.social/users/Impish4249/statuses/114070281356289843/replies", "items": [] } }, "likes": { "id": "https://mastodon.social/users/Impish4249/statuses/114070281356289843/likes", "type": "Collection", "totalItems": 0 }, "shares": { "id": "https://mastodon.social/users/Impish4249/statuses/114070281356289843/shares", "type": "Collection", "totalItems": 4 } }