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", { "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://mastodon.social/users/ekis/statuses/111589746277377515", "type": "Note", "summary": null, "inReplyTo": null, "published": "2023-12-16T10:59:59Z", "url": "https://mastodon.social/@ekis/111589746277377515", "attributedTo": "https://mastodon.social/users/ekis", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mastodon.social/users/ekis/followers" ], "sensitive": false, "atomUri": "https://mastodon.social/users/ekis/statuses/111589746277377515", "inReplyToAtomUri": null, "conversation": "tag:mastodon.social,2023-12-16:objectId=600402368:objectType=Conversation", "content": "<p>Don&#39;t have time for a banner grab but still interested in basic info about a server?</p><p>Well taking advantage of a server&#39;s inability to process &#39;%&#39; b/c it expects two hex digits to follow; in many cases it errors</p><p>Preventing this from happening is actually easy</p><p>It requires an essential secure programming principle: verify, validate, and sanitize your input</p><p>This principle should be applied to EVERY input, and yes the URL is input</p><p><a href=\"https://mastodon.social/tags/infosec\" class=\"mention hashtag\" rel=\"tag\">#<span>infosec</span></a> <a href=\"https://mastodon.social/tags/security\" class=\"mention hashtag\" rel=\"tag\">#<span>security</span></a> <a href=\"https://mastodon.social/tags/it\" class=\"mention hashtag\" rel=\"tag\">#<span>it</span></a> <a href=\"https://mastodon.social/tags/sysadmin\" class=\"mention hashtag\" rel=\"tag\">#<span>sysadmin</span></a> <a href=\"https://mastodon.social/tags/tech\" class=\"mention hashtag\" rel=\"tag\">#<span>tech</span></a> <a href=\"https://mastodon.social/tags/development\" class=\"mention hashtag\" rel=\"tag\">#<span>development</span></a> <a href=\"https://mastodon.social/tags/programming\" class=\"mention hashtag\" rel=\"tag\">#<span>programming</span></a></p>", "contentMap": { "en": "<p>Don&#39;t have time for a banner grab but still interested in basic info about a server?</p><p>Well taking advantage of a server&#39;s inability to process &#39;%&#39; b/c it expects two hex digits to follow; in many cases it errors</p><p>Preventing this from happening is actually easy</p><p>It requires an essential secure programming principle: verify, validate, and sanitize your input</p><p>This principle should be applied to EVERY input, and yes the URL is input</p><p><a href=\"https://mastodon.social/tags/infosec\" class=\"mention hashtag\" rel=\"tag\">#<span>infosec</span></a> <a href=\"https://mastodon.social/tags/security\" class=\"mention hashtag\" rel=\"tag\">#<span>security</span></a> <a href=\"https://mastodon.social/tags/it\" class=\"mention hashtag\" rel=\"tag\">#<span>it</span></a> <a href=\"https://mastodon.social/tags/sysadmin\" class=\"mention hashtag\" rel=\"tag\">#<span>sysadmin</span></a> <a href=\"https://mastodon.social/tags/tech\" class=\"mention hashtag\" rel=\"tag\">#<span>tech</span></a> <a href=\"https://mastodon.social/tags/development\" class=\"mention hashtag\" rel=\"tag\">#<span>development</span></a> <a href=\"https://mastodon.social/tags/programming\" class=\"mention hashtag\" rel=\"tag\">#<span>programming</span></a></p>" }, "attachment": [ { "type": "Document", "mediaType": "image/png", "url": "https://files.mastodon.social/media_attachments/files/111/545/546/862/269/623/original/47c2ab6794524a6c.png", "name": "Using /% you can generate an error on many servers, and when they have not bothered to hide information it can be revealing.", "blurhash": "U7Ss8A$}~94?0Ms+-mIX-iIpE3-n~RE24=?Y", "focalPoint": [ 0, 0 ], "width": 1248, "height": 257 } ], "tag": [ { "type": "Hashtag", "href": "https://mastodon.social/tags/infosec", "name": "#infosec" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/security", "name": "#security" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/it", "name": "#it" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/sysadmin", "name": "#sysadmin" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/tech", "name": "#tech" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/development", "name": "#development" }, { "type": "Hashtag", "href": "https://mastodon.social/tags/programming", "name": "#programming" } ], "replies": { "id": "https://mastodon.social/users/ekis/statuses/111589746277377515/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mastodon.social/users/ekis/statuses/111589746277377515/replies?only_other_accounts=true&page=true", "partOf": "https://mastodon.social/users/ekis/statuses/111589746277377515/replies", "items": [] } }, "likes": { "id": "https://mastodon.social/users/ekis/statuses/111589746277377515/likes", "type": "Collection", "totalItems": 50 }, "shares": { "id": "https://mastodon.social/users/ekis/statuses/111589746277377515/shares", "type": "Collection", "totalItems": 19 } }