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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"https://www.w3.org/ns/activitystreams",
{
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"inReplyToAtomUri": "ostatus:inReplyToAtomUri",
"conversation": "ostatus:conversation",
"sensitive": "as:sensitive",
"toot": "http://joinmastodon.org/ns#",
"votersCount": "toot:votersCount",
"Hashtag": "as:Hashtag"
}
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"content": "<p>6/n</p><p>Uh-oh.</p><p>' <a href=\"https://mastodon.social/tags/Artificialintelligence\" class=\"mention hashtag\" rel=\"tag\">#<span>Artificialintelligence</span></a> companies have been urged to replicate the safety calculations that underpinned Robert <a href=\"https://mastodon.social/tags/Oppenheimer\" class=\"mention hashtag\" rel=\"tag\">#<span>Oppenheimer</span></a> ’s first <a href=\"https://mastodon.social/tags/nucleartest\" class=\"mention hashtag\" rel=\"tag\">#<span>nucleartest</span></a> before they release all-powerful systems. </p><p>Max <a href=\"https://mastodon.social/tags/Tegmark\" class=\"mention hashtag\" rel=\"tag\">#<span>Tegmark</span></a>, a leading voice in <a href=\"https://mastodon.social/tags/AI\" class=\"mention hashtag\" rel=\"tag\">#<span>AI</span></a> safety, said he had carried out calculations akin to those of the US physicist Arthur <a href=\"https://mastodon.social/tags/Compton\" class=\"mention hashtag\" rel=\"tag\">#<span>Compton</span></a> before the <a href=\"https://mastodon.social/tags/Trinitytest\" class=\"mention hashtag\" rel=\"tag\">#<span>Trinitytest</span></a> and had found a 90% probability that a highly advanced AI would pose an existential threat.' </p><p><a href=\"https://www.theguardian.com/technology/2025/may/10/ai-firms-urged-to-calculate-existential-threat-amid-fears-it-could-escape-human-control\" target=\"_blank\" rel=\"nofollow noopener\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">theguardian.com/technology/202</span><span class=\"invisible\">5/may/10/ai-firms-urged-to-calculate-existential-threat-amid-fears-it-could-escape-human-control</span></a></p>",
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