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",
"blurhash": "toot:blurhash",
"focalPoint": {
"@container": "@list",
"@id": "toot:focalPoint"
},
"Hashtag": "as:Hashtag"
}
],
"id": "https://sigmoid.social/users/lysander07/statuses/114093384264044155",
"type": "Note",
"summary": null,
"inReplyTo": null,
"published": "2025-03-02T14:48:03Z",
"url": "https://sigmoid.social/@lysander07/114093384264044155",
"attributedTo": "https://sigmoid.social/users/lysander07",
"to": [
"https://www.w3.org/ns/activitystreams#Public"
],
"cc": [
"https://sigmoid.social/users/lysander07/followers",
"https://mastodon.social/users/dblp"
],
"sensitive": false,
"atomUri": "https://sigmoid.social/users/lysander07/statuses/114093384264044155",
"inReplyToAtomUri": null,
"conversation": "tag:sigmoid.social,2025-03-02:objectId=52377972:objectType=Conversation",
"content": "<p>Dear <span class=\"h-card\" translate=\"no\"><a href=\"https://mastodon.social/@dblp\" class=\"u-url mention\">@<span>dblp</span></a></span>, we are very happy to see that you are deploying a QLever-based SPARQL endpoint. Would you probably mind to increase your cache size as this simple 2-hop query doesn't work: <br />SELECT ?p ?o ?pp ?oo WHERE { <br /> <<a href=\"https://dblp.org/rec/books/acm/19/X19\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"\">dblp.org/rec/books/acm/19/X19</span><span class=\"invisible\"></span></a>> ?p ?o .<br /> OPTIONAL { ?o ?pp ?oo . }<br />}<br /><a href=\"https://sparql.dblp.org/n9kCi4\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"\">sparql.dblp.org/n9kCi4</span><span class=\"invisible\"></span></a> <br />Thank you very much!! :) </p><p><a href=\"https://sigmoid.social/tags/semanticweb\" class=\"mention hashtag\" rel=\"tag\">#<span>semanticweb</span></a> <a href=\"https://sigmoid.social/tags/sparql\" class=\"mention hashtag\" rel=\"tag\">#<span>sparql</span></a> <a href=\"https://sigmoid.social/tags/knowledgegraph\" class=\"mention hashtag\" rel=\"tag\">#<span>knowledgegraph</span></a> <a href=\"https://sigmoid.social/tags/bibliography\" class=\"mention hashtag\" rel=\"tag\">#<span>bibliography</span></a> <a href=\"https://sigmoid.social/tags/qlever\" class=\"mention hashtag\" rel=\"tag\">#<span>qlever</span></a></p>",
"contentMap": {
"en": "<p>Dear <span class=\"h-card\" translate=\"no\"><a href=\"https://mastodon.social/@dblp\" class=\"u-url mention\">@<span>dblp</span></a></span>, we are very happy to see that you are deploying a QLever-based SPARQL endpoint. Would you probably mind to increase your cache size as this simple 2-hop query doesn't work: <br />SELECT ?p ?o ?pp ?oo WHERE { <br /> <<a href=\"https://dblp.org/rec/books/acm/19/X19\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"\">dblp.org/rec/books/acm/19/X19</span><span class=\"invisible\"></span></a>> ?p ?o .<br /> OPTIONAL { ?o ?pp ?oo . }<br />}<br /><a href=\"https://sparql.dblp.org/n9kCi4\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"\">sparql.dblp.org/n9kCi4</span><span class=\"invisible\"></span></a> <br />Thank you very much!! :) </p><p><a href=\"https://sigmoid.social/tags/semanticweb\" class=\"mention hashtag\" rel=\"tag\">#<span>semanticweb</span></a> <a href=\"https://sigmoid.social/tags/sparql\" class=\"mention hashtag\" rel=\"tag\">#<span>sparql</span></a> <a href=\"https://sigmoid.social/tags/knowledgegraph\" class=\"mention hashtag\" rel=\"tag\">#<span>knowledgegraph</span></a> <a href=\"https://sigmoid.social/tags/bibliography\" class=\"mention hashtag\" rel=\"tag\">#<span>bibliography</span></a> <a href=\"https://sigmoid.social/tags/qlever\" class=\"mention hashtag\" rel=\"tag\">#<span>qlever</span></a></p>"
},
"attachment": [
{
"type": "Document",
"mediaType": "image/png",
"url": "https://cdn.masto.host/sigmoidsocial/media_attachments/files/114/093/372/744/862/980/original/9fea8a178a13a4a2.png",
"name": "Screenshot of the DBLP SPARQL endpoint running the query:\nSELECT ?p ?o ?pp ?oo WHERE { \n <https://dblp.org/rec/books/acm/19/X19> ?p ?o .\n OPTIONAL { ?o ?pp ?oo . }\n}\nwith the following result:\n\nError processing query\nTried to allocate 10.6 GB, but only 8.7 GB were available. Clear the cache or allow more memory for QLever during startup\nYour query was:\nSELECT ?p ?o ?pp ?oo WHERE { \n <https://dblp.org/rec/books/acm/19/X19> ?p ?o .\n OPTIONAL { ?o ?pp ?oo . }\n}\n\n",
"blurhash": "UESPR$WBWBs;?^ofRjj[IVaeoeoLIAWBR*WB",
"focalPoint": [
0,
0
],
"width": 2472,
"height": 1724
}
],
"tag": [
{
"type": "Mention",
"href": "https://mastodon.social/users/dblp",
"name": "@dblp@mastodon.social"
},
{
"type": "Hashtag",
"href": "https://sigmoid.social/tags/semanticweb",
"name": "#semanticweb"
},
{
"type": "Hashtag",
"href": "https://sigmoid.social/tags/sparql",
"name": "#sparql"
},
{
"type": "Hashtag",
"href": "https://sigmoid.social/tags/knowledgegraph",
"name": "#knowledgegraph"
},
{
"type": "Hashtag",
"href": "https://sigmoid.social/tags/bibliography",
"name": "#bibliography"
},
{
"type": "Hashtag",
"href": "https://sigmoid.social/tags/qlever",
"name": "#qlever"
}
],
"replies": {
"id": "https://sigmoid.social/users/lysander07/statuses/114093384264044155/replies",
"type": "Collection",
"first": {
"type": "CollectionPage",
"next": "https://sigmoid.social/users/lysander07/statuses/114093384264044155/replies?only_other_accounts=true&page=true",
"partOf": "https://sigmoid.social/users/lysander07/statuses/114093384264044155/replies",
"items": []
}
},
"likes": {
"id": "https://sigmoid.social/users/lysander07/statuses/114093384264044155/likes",
"type": "Collection",
"totalItems": 4
},
"shares": {
"id": "https://sigmoid.social/users/lysander07/statuses/114093384264044155/shares",
"type": "Collection",
"totalItems": 1
}
}