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/ascherbaum/statuses/114647550751609856", "type": "Note", "summary": null, "inReplyTo": null, "published": "2025-06-08T11:39:53Z", "url": "https://mastodon.social/@ascherbaum/114647550751609856", "attributedTo": "https://mastodon.social/users/ascherbaum", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodon.social/users/ascherbaum/followers" ], "sensitive": false, "atomUri": "https://mastodon.social/users/ascherbaum/statuses/114647550751609856", "inReplyToAtomUri": null, "conversation": "tag:mastodon.social,2025-06-08:objectId=1017614795:objectType=Conversation", "content": "<p>And ... <a href=\"https://mastodon.social/tags/Certbot\" class=\"mention hashtag\" rel=\"tag\">#<span>Certbot</span></a> in <a href=\"https://mastodon.social/tags/Debian\" class=\"mention hashtag\" rel=\"tag\">#<span>Debian</span></a> Bookworm is broken.</p><p>Tried a dns01 setup. It works with the exact same parameters using nslookup, it works with the exact same playbook on Trixie. It breaks on Bookworm with &quot;The peer didn&#39;t know the key we used&quot;. The remote bind9 complains with &quot;tsig verify failure (BADKEY)&quot;.</p><p>Just tested it also with two fresh installations, can reproduce the problem.</p><p>Now how to debug this ...</p>", "contentMap": { "en": "<p>And ... <a href=\"https://mastodon.social/tags/Certbot\" class=\"mention hashtag\" rel=\"tag\">#<span>Certbot</span></a> in <a href=\"https://mastodon.social/tags/Debian\" class=\"mention hashtag\" rel=\"tag\">#<span>Debian</span></a> Bookworm is broken.</p><p>Tried a dns01 setup. It works with the exact same parameters using nslookup, it works with the exact same playbook on Trixie. It breaks on Bookworm with &quot;The peer didn&#39;t know the key we used&quot;. The remote bind9 complains with &quot;tsig verify failure (BADKEY)&quot;.</p><p>Just tested it also with two fresh installations, can reproduce the problem.</p><p>Now how to debug this ...</p>" }, "attachment": [], "tag": [ { "type": "Hashtag", "href": "https://mastodon.social/tags/certbot", "name": "#certbot" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/debian", "name": "#debian" } ], "replies": { "id": "https://mastodon.social/users/ascherbaum/statuses/114647550751609856/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mastodon.social/users/ascherbaum/statuses/114647550751609856/replies?only_other_accounts=true&page=true", "partOf": "https://mastodon.social/users/ascherbaum/statuses/114647550751609856/replies", "items": [] } }, "likes": { "id": "https://mastodon.social/users/ascherbaum/statuses/114647550751609856/likes", "type": "Collection", "totalItems": 1 }, "shares": { "id": "https://mastodon.social/users/ascherbaum/statuses/114647550751609856/shares", "type": "Collection", "totalItems": 2 } }