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.
{
"@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"
}
],
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"type": "Note",
"summary": null,
"inReplyTo": null,
"published": "2025-06-25T09:18:42Z",
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"attributedTo": "https://rss-mstdn.studiofreesia.com/users/current_ndl_go_car",
"to": [
"https://www.w3.org/ns/activitystreams#Public"
],
"cc": [
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],
"sensitive": false,
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"inReplyToAtomUri": null,
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"content": "<p>国立国会図書館（NDL）、Web NDL Authoritiesの機能を拡張<br /><a href=\"https://current.ndl.go.jp/car/254714\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"\">current.ndl.go.jp/car/254714</span><span class=\"invisible\"></span></a></p><p><a href=\"https://rss-mstdn.studiofreesia.com/tags/current_ndl_go_car\" class=\"mention hashtag\" rel=\"tag\">#<span>current_ndl_go_car</span></a> <a href=\"https://rss-mstdn.studiofreesia.com/tags/%E3%82%AB%E3%83%AC%E3%83%B3%E3%83%88%E3%82%A2%E3%82%A6%E3%82%A7%E3%82%A2%E3%83%8D%E3%82%B9_R\" class=\"mention hashtag\" rel=\"tag\">#<span>カレントアウェアネス_R</span></a> <a href=\"https://rss-mstdn.studiofreesia.com/tags/%E6%97%A5%E6%9C%AC\" class=\"mention hashtag\" rel=\"tag\">#<span>日本</span></a> <a href=\"https://rss-mstdn.studiofreesia.com/tags/%E5%9B%BD%E7%AB%8B%E5%9B%B3%E6%9B%B8%E9%A4%A8\" class=\"mention hashtag\" rel=\"tag\">#<span>国立図書館</span></a> <a href=\"https://rss-mstdn.studiofreesia.com/tags/Linked_Data\" class=\"mention hashtag\" rel=\"tag\">#<span>Linked_Data</span></a> <a href=\"https://rss-mstdn.studiofreesia.com/tags/%E3%82%B7%E3%82%BD%E3%83%BC%E3%83%A9%E3%82%B9\" class=\"mention hashtag\" rel=\"tag\">#<span>シソーラス</span></a> <a href=\"https://rss-mstdn.studiofreesia.com/tags/%E5%85%B8%E6%8B%A0\" class=\"mention hashtag\" rel=\"tag\">#<span>典拠</span></a> <a href=\"https://rss-mstdn.studiofreesia.com/tags/%E6%9B%B8%E8%AA%8C%E6%83%85%E5%A0%B1\" class=\"mention hashtag\" rel=\"tag\">#<span>書誌情報</span></a> <a href=\"https://rss-mstdn.studiofreesia.com/tags/%E5%9B%BD%E7%AB%8B%E5%9B%BD%E4%BC%9A%E5%9B%B3%E6%9B%B8%E9%A4%A8\" class=\"mention hashtag\" rel=\"tag\">#<span>国立国会図書館</span></a></p>",
"contentMap": {
"ja": "<p>国立国会図書館（NDL）、Web NDL Authoritiesの機能を拡張<br /><a href=\"https://current.ndl.go.jp/car/254714\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"\">current.ndl.go.jp/car/254714</span><span class=\"invisible\"></span></a></p><p><a href=\"https://rss-mstdn.studiofreesia.com/tags/current_ndl_go_car\" class=\"mention hashtag\" rel=\"tag\">#<span>current_ndl_go_car</span></a> <a href=\"https://rss-mstdn.studiofreesia.com/tags/%E3%82%AB%E3%83%AC%E3%83%B3%E3%83%88%E3%82%A2%E3%82%A6%E3%82%A7%E3%82%A2%E3%83%8D%E3%82%B9_R\" class=\"mention hashtag\" rel=\"tag\">#<span>カレントアウェアネス_R</span></a> <a href=\"https://rss-mstdn.studiofreesia.com/tags/%E6%97%A5%E6%9C%AC\" class=\"mention hashtag\" rel=\"tag\">#<span>日本</span></a> <a href=\"https://rss-mstdn.studiofreesia.com/tags/%E5%9B%BD%E7%AB%8B%E5%9B%B3%E6%9B%B8%E9%A4%A8\" class=\"mention hashtag\" rel=\"tag\">#<span>国立図書館</span></a> <a href=\"https://rss-mstdn.studiofreesia.com/tags/Linked_Data\" class=\"mention hashtag\" rel=\"tag\">#<span>Linked_Data</span></a> <a href=\"https://rss-mstdn.studiofreesia.com/tags/%E3%82%B7%E3%82%BD%E3%83%BC%E3%83%A9%E3%82%B9\" class=\"mention hashtag\" rel=\"tag\">#<span>シソーラス</span></a> <a href=\"https://rss-mstdn.studiofreesia.com/tags/%E5%85%B8%E6%8B%A0\" class=\"mention hashtag\" rel=\"tag\">#<span>典拠</span></a> <a href=\"https://rss-mstdn.studiofreesia.com/tags/%E6%9B%B8%E8%AA%8C%E6%83%85%E5%A0%B1\" class=\"mention hashtag\" rel=\"tag\">#<span>書誌情報</span></a> <a href=\"https://rss-mstdn.studiofreesia.com/tags/%E5%9B%BD%E7%AB%8B%E5%9B%BD%E4%BC%9A%E5%9B%B3%E6%9B%B8%E9%A4%A8\" class=\"mention hashtag\" rel=\"tag\">#<span>国立国会図書館</span></a></p>"
},
"attachment": [],
"tag": [
{
"type": "Hashtag",
"href": "https://rss-mstdn.studiofreesia.com/tags/current_ndl_go_car",
"name": "#current_ndl_go_car"
},
{
"type": "Hashtag",
"href": "https://rss-mstdn.studiofreesia.com/tags/%E3%82%AB%E3%83%AC%E3%83%B3%E3%83%88%E3%82%A2%E3%82%A6%E3%82%A7%E3%82%A2%E3%83%8D%E3%82%B9_r",
"name": "#カレントアウェアネス_r"
},
{
"type": "Hashtag",
"href": "https://rss-mstdn.studiofreesia.com/tags/%E6%97%A5%E6%9C%AC",
"name": "#日本"
},
{
"type": "Hashtag",
"href": "https://rss-mstdn.studiofreesia.com/tags/%E5%9B%BD%E7%AB%8B%E5%9B%B3%E6%9B%B8%E9%A4%A8",
"name": "#国立図書館"
},
{
"type": "Hashtag",
"href": "https://rss-mstdn.studiofreesia.com/tags/linked_data",
"name": "#linked_data"
},
{
"type": "Hashtag",
"href": "https://rss-mstdn.studiofreesia.com/tags/%E3%82%B7%E3%82%BD%E3%83%BC%E3%83%A9%E3%82%B9",
"name": "#シソーラス"
},
{
"type": "Hashtag",
"href": "https://rss-mstdn.studiofreesia.com/tags/%E5%85%B8%E6%8B%A0",
"name": "#典拠"
},
{
"type": "Hashtag",
"href": "https://rss-mstdn.studiofreesia.com/tags/%E6%9B%B8%E8%AA%8C%E6%83%85%E5%A0%B1",
"name": "#書誌情報"
},
{
"type": "Hashtag",
"href": "https://rss-mstdn.studiofreesia.com/tags/%E5%9B%BD%E7%AB%8B%E5%9B%BD%E4%BC%9A%E5%9B%B3%E6%9B%B8%E9%A4%A8",
"name": "#国立国会図書館"
}
],
"replies": {
"id": "https://rss-mstdn.studiofreesia.com/users/current_ndl_go_car/statuses/114743254894425413/replies",
"type": "Collection",
"first": {
"type": "CollectionPage",
"next": "https://rss-mstdn.studiofreesia.com/users/current_ndl_go_car/statuses/114743254894425413/replies?only_other_accounts=true&page=true",
"partOf": "https://rss-mstdn.studiofreesia.com/users/current_ndl_go_car/statuses/114743254894425413/replies",
"items": []
}
}
}