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", "https://w3id.org/security/v1", { "manuallyApprovesFollowers": "as:manuallyApprovesFollowers", "toot": "http://joinmastodon.org/ns#", "featured": { "@id": "toot:featured", "@type": "@id" }, "featuredTags": { "@id": "toot:featuredTags", "@type": "@id" }, "alsoKnownAs": { "@id": "as:alsoKnownAs", "@type": "@id" }, "movedTo": { "@id": "as:movedTo", "@type": "@id" }, "schema": "http://schema.org#", "PropertyValue": "schema:PropertyValue", "value": "schema:value", "discoverable": "toot:discoverable", "suspended": "toot:suspended", "memorial": "toot:memorial", "indexable": "toot:indexable", "attributionDomains": { "@id": "toot:attributionDomains", "@type": "@id" }, "Hashtag": "as:Hashtag", "focalPoint": { "@container": "@list", "@id": "toot:focalPoint" } } ], "id": "https://mastodon.social/users/brettcannon", "type": "Person", "following": "https://mastodon.social/users/brettcannon/following", "followers": "https://mastodon.social/users/brettcannon/followers", "inbox": "https://mastodon.social/users/brettcannon/inbox", "outbox": "https://mastodon.social/users/brettcannon/outbox", "featured": "https://mastodon.social/users/brettcannon/collections/featured", "featuredTags": "https://mastodon.social/users/brettcannon/collections/tags", "preferredUsername": "brettcannon", "name": "Brett Cannon", "summary": "<p><a href=\"https://mastodon.social/tags/Python\" class=\"mention hashtag\" rel=\"tag\">#<span>Python</span></a> core developer; snarky <a href=\"https://mastodon.social/tags/Canadian\" class=\"mention hashtag\" rel=\"tag\">#<span>Canadian</span></a></p>", "url": "https://mastodon.social/@brettcannon", "manuallyApprovesFollowers": false, "discoverable": true, "indexable": true, "published": "2025-06-06T00:00:00Z", "memorial": false, "alsoKnownAs": [ "https://fosstodon.org/users/brettcannon" ], "publicKey": { "id": "https://mastodon.social/users/brettcannon#main-key", "owner": "https://mastodon.social/users/brettcannon", "publicKeyPem": "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArGH/zVQ4/3NyqAE/uQmq\nMwgo3ioUo+F51jmeAMO1J77oke+hbWURfwh6k3TcXlK/k8pDxRd4uGVdvBL/ezD5\ny6NxLB2anAyH/o8fmUe361JQAkXgNJbdcxiekjrLmf/Y+wYEIp4zyreH7+fPELRF\nXGqXEOLsjS1oBbDN2o18xiXW1EWxB3Asw7NkjZPMrmRugMfe8RN/eFO47D4oRojI\nbILSNUMq8ziP6sln0nkt6YI4qU4FzUJiIoMYCJLA7ioG4jsI3Oj+I/J9JdEhV09M\nVnVxj5jznzt5dkr3Qd9szH/M5gTVk01UT07eFij3JWheS0u+Yol6Ymy6r11Be6Gh\n1QIDAQAB\n-----END PUBLIC KEY-----\n" }, "tag": [ { "type": "Hashtag", "href": "https://mastodon.social/tags/python", "name": "#python" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/canadian", "name": "#canadian" } ], "attachment": [ { "type": "PropertyValue", "name": "Sponsor", "value": "<a href=\"https://github.com/sponsors/brettcannon/\" target=\"_blank\" rel=\"nofollow noopener me\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">github.com/sponsors/brettcanno</span><span class=\"invisible\">n/</span></a>" }, { "type": "PropertyValue", "name": "Blog", "value": "<a href=\"https://snarky.ca\" target=\"_blank\" rel=\"nofollow noopener me\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"\">snarky.ca</span><span class=\"invisible\"></span></a>" }, { "type": "PropertyValue", "name": "GitHub", "value": "<a href=\"https://github.com/brettcannon/\" target=\"_blank\" rel=\"nofollow noopener me\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"\">github.com/brettcannon/</span><span class=\"invisible\"></span></a>" }, { "type": "PropertyValue", "name": "Notes", "value": "<a href=\"https://opensource.snarky.ca\" target=\"_blank\" rel=\"nofollow noopener me\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"\">opensource.snarky.ca</span><span class=\"invisible\"></span></a>" } ], "endpoints": { "sharedInbox": "https://mastodon.social/inbox" }, "icon": { "type": "Image", "mediaType": "image/jpeg", "url": "https://files.mastodon.social/accounts/avatars/114/633/944/987/767/035/original/7b8576389dc1e31e.jpg" }, "image": { "type": "Image", "mediaType": "image/jpeg", "url": "https://files.mastodon.social/accounts/headers/114/633/944/987/767/035/original/43b47a73f082eff5.jpeg" } }