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", "litepub": "http://litepub.social/ns#", "directMessage": "litepub:directMessage", "Hashtag": "as:Hashtag" } ], "id": "https://infosec.exchange/users/jtk/statuses/113912987971481805/replies", "type": "Collection", "first": { "id": "https://infosec.exchange/users/jtk/statuses/113912987971481805/replies?page=true", "type": "CollectionPage", "next": "https://infosec.exchange/users/jtk/statuses/113912987971481805/replies?only_other_accounts=true&page=true", "partOf": "https://infosec.exchange/users/jtk/statuses/113912987971481805/replies", "items": [ { "id": "https://infosec.exchange/users/jtk/statuses/114495181167661926", "type": "Note", "summary": null, "inReplyTo": "https://infosec.exchange/users/jtk/statuses/113912987971481805", "published": "2025-05-12T13:50:18Z", "url": "https://infosec.exchange/@jtk/114495181167661926", "attributedTo": "https://infosec.exchange/users/jtk", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://infosec.exchange/users/jtk/followers", "https://io.mwl.io/users/mwl" ], "sensitive": false, "atomUri": "https://infosec.exchange/users/jtk/statuses/114495181167661926", "inReplyToAtomUri": "https://infosec.exchange/users/jtk/statuses/113912987971481805", "conversation": "tag:infosec.exchange,2025-01-29:objectId=235773112:objectType=Conversation", "content": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://io.mwl.io/@mwl\" class=\"u-url mention\">@<span>mwl</span></a></span> I had forgotten about this BCP (if I ever saw I don&#39;t even remember), but someone pointed this out when Let&#39;s Encrypt has a policy not to issue certs under .arpa.</p><p>&quot;In particular, the &quot;arpa&quot; domain is not to be used in the same manner (e.g., for naming hosts) as other generic Top Level Domains are commonly used.&quot;</p><p><a href=\"https://datatracker.ietf.org/doc/html/rfc3172\" target=\"_blank\" rel=\"nofollow noopener\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">datatracker.ietf.org/doc/html/</span><span class=\"invisible\">rfc3172</span></a></p><p><a href=\"https://infosec.exchange/tags/DNS\" class=\"mention hashtag\" rel=\"tag\">#<span>DNS</span></a></p>", "contentMap": { "en": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://io.mwl.io/@mwl\" class=\"u-url mention\">@<span>mwl</span></a></span> I had forgotten about this BCP (if I ever saw I don&#39;t even remember), but someone pointed this out when Let&#39;s Encrypt has a policy not to issue certs under .arpa.</p><p>&quot;In particular, the &quot;arpa&quot; domain is not to be used in the same manner (e.g., for naming hosts) as other generic Top Level Domains are commonly used.&quot;</p><p><a href=\"https://datatracker.ietf.org/doc/html/rfc3172\" target=\"_blank\" rel=\"nofollow noopener\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">datatracker.ietf.org/doc/html/</span><span class=\"invisible\">rfc3172</span></a></p><p><a href=\"https://infosec.exchange/tags/DNS\" class=\"mention hashtag\" rel=\"tag\">#<span>DNS</span></a></p>" }, "attachment": [], "tag": [ { "type": "Mention", "href": "https://io.mwl.io/users/mwl", "name": "@mwl@io.mwl.io" }, { "type": "Hashtag", "href": "https://infosec.exchange/tags/dns", "name": "#dns" } ], "replies": { "id": "https://infosec.exchange/users/jtk/statuses/114495181167661926/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://infosec.exchange/users/jtk/statuses/114495181167661926/replies?only_other_accounts=true&page=true", "partOf": "https://infosec.exchange/users/jtk/statuses/114495181167661926/replies", "items": [] } }, "likes": { "id": "https://infosec.exchange/users/jtk/statuses/114495181167661926/likes", "type": "Collection", "totalItems": 2 }, "shares": { "id": "https://infosec.exchange/users/jtk/statuses/114495181167661926/shares", "type": "Collection", "totalItems": 1 } } ] } }