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://join-lemmy.org/context.json", "https://www.w3.org/ns/activitystreams" ], "type": "Page", "id": "https://lm.madiator.cloud/post/1024652", "attributedTo": "https://lm.madiator.cloud/u/blenderdumbass", "to": [ "https://beehaw.org/c/foss", "https://www.w3.org/ns/activitystreams#Public" ], "name": "Clarifying Costs of Running the Fediverse with Jerry from Infosec.Exchange", "cc": [], "mediaType": "text/html", "attachment": [ { "href": "https://blenderdumbass.org/articles/clarifying_costs_of_running_the_fediverse_with_jerry_from_infosec.exchange", "mediaType": "text/html", "type": "Link" } ], "sensitive": false, "published": "2025-06-14T18:38:39.889464Z", "updated": "2025-06-14T18:39:11.769756Z", "language": { "identifier": "en", "name": "English" }, "audience": "https://beehaw.org/c/foss", "tag": [ { "href": "https://lm.madiator.cloud/post/1024652", "name": "#foss", "type": "Hashtag" } ] }