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://chaos.social/users/delta/statuses/114671711495881176", "type": "Note", "summary": null, "inReplyTo": null, "published": "2025-06-12T18:04:17Z", "url": "https://chaos.social/@delta/114671711495881176", "attributedTo": "https://chaos.social/users/delta", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://chaos.social/users/delta/followers" ], "sensitive": false, "atomUri": "https://chaos.social/users/delta/statuses/114671711495881176", "inReplyToAtomUri": null, "conversation": "tag:chaos.social,2025-06-12:objectId=278539611:objectType=Conversation", "content": "<p><a href=\"https://chaos.social/tags/deltachat\" class=\"mention hashtag\" rel=\"tag\">#<span>deltachat</span></a> is secure against server-side group membership changes but for a very different reason than <a href=\"https://chaos.social/tags/signal\" class=\"mention hashtag\" rel=\"tag\">#<span>signal</span></a> which keeps encrypted group membership data in a central store. </p><p>Delta Chat has _no_ central store but implements a rigidly tested <a href=\"https://chaos.social/tags/p2p\" class=\"mention hashtag\" rel=\"tag\">#<span>p2p</span></a> group membership model where servers play no role <a href=\"https://github.com/chatmail/models/tree/main/group-membership\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">github.com/chatmail/models/tre</span><span class=\"invisible\">e/main/group-membership</span></a></p><p>Both signal and delta chat are safe against recently published attacks against <a href=\"https://chaos.social/tags/whatsapp\" class=\"mention hashtag\" rel=\"tag\">#<span>whatsapp</span></a> that can add members to chats, breaking end to end encryption. <a href=\"https://arstechnica.com/security/2025/05/whatsapp-provides-no-cryptographic-management-for-group-messages\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">arstechnica.com/security/2025/</span><span class=\"invisible\">05/whatsapp-provides-no-cryptographic-management-for-group-messages</span></a></p>", "contentMap": { "en": "<p><a href=\"https://chaos.social/tags/deltachat\" class=\"mention hashtag\" rel=\"tag\">#<span>deltachat</span></a> is secure against server-side group membership changes but for a very different reason than <a href=\"https://chaos.social/tags/signal\" class=\"mention hashtag\" rel=\"tag\">#<span>signal</span></a> which keeps encrypted group membership data in a central store. </p><p>Delta Chat has _no_ central store but implements a rigidly tested <a href=\"https://chaos.social/tags/p2p\" class=\"mention hashtag\" rel=\"tag\">#<span>p2p</span></a> group membership model where servers play no role <a href=\"https://github.com/chatmail/models/tree/main/group-membership\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">github.com/chatmail/models/tre</span><span class=\"invisible\">e/main/group-membership</span></a></p><p>Both signal and delta chat are safe against recently published attacks against <a href=\"https://chaos.social/tags/whatsapp\" class=\"mention hashtag\" rel=\"tag\">#<span>whatsapp</span></a> that can add members to chats, breaking end to end encryption. <a href=\"https://arstechnica.com/security/2025/05/whatsapp-provides-no-cryptographic-management-for-group-messages\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">arstechnica.com/security/2025/</span><span class=\"invisible\">05/whatsapp-provides-no-cryptographic-management-for-group-messages</span></a></p>" }, "attachment": [], "tag": [ { "type": "Hashtag", "href": "https://chaos.social/tags/deltachat", "name": "#deltachat" }, { "type": "Hashtag", "href": "https://chaos.social/tags/signal", "name": "#signal" }, { "type": "Hashtag", "href": "https://chaos.social/tags/p2p", "name": "#p2p" }, { "type": "Hashtag", "href": "https://chaos.social/tags/whatsapp", "name": "#whatsapp" } ], "replies": { "id": "https://chaos.social/users/delta/statuses/114671711495881176/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://chaos.social/users/delta/statuses/114671711495881176/replies?only_other_accounts=true&page=true", "partOf": "https://chaos.social/users/delta/statuses/114671711495881176/replies", "items": [] } }, "likes": { "id": "https://chaos.social/users/delta/statuses/114671711495881176/likes", "type": "Collection", "totalItems": 54 }, "shares": { "id": "https://chaos.social/users/delta/statuses/114671711495881176/shares", "type": "Collection", "totalItems": 40 } }