fediverse

<p>The big feature in <a href="https://github.com/toddsundsted/ktistec/compare/ab57a3c7...74f7666e" rel="nofollow">release v3.2.2</a> of Ktistec is pinned posts with support for the Mastodon Featured Posts collection. Federation works both ways—pin a post on Ktistec and it will show up as a pinned post on Mastodon and vice versa. When you refresh an actor profile, Ktistec also fetches and updates the actor&#x27;s pinned posts. This is another small step in the direction of supporting all features that Mastodon-compatible client applications expect to access via the API. It&#x27;s also useful in its own right.</p><p> The other major feature, which I posted a short video demonstrating <a href="https://epiktistes.com/objects/HEfQyY2fOTQ" rel="nofollow">here</a>, is X-Ray Mode. X-Ray Mode is a developer and power-user tool for inspecting ActivityPub JSON-LD representations of actors, objects, and other content. Pressing Ctrl+Shift+X on any page displays the data behind the page—like an x-ray. You can:</p><p>Cached Version: View the local JSON-LD representation stored in the Ktistec database<br>Remote Version: Fetch and view the original JSON-LD representation from the source server<br>Navigation: Click on any ActivityPub IRI to navigate to that object<br>History: Use Alt+Left and Alt+Right to navigate through your viewing history</p><p>This feature is useful for debugging federation issues, understanding ActivityPub structures, and verifying how content is stored and represented.</p><p>Here&#x27;s the full changelog for the release:</p><p>Added</p><p>Support for pinned posts and the Mastodon &quot;featured posts&quot; collection.<br>X-Ray Mode for viewing and navigating JSON-LD resource (actor, object, etc.) representations.<br>Back links on thread pages for easier navigation. (fixes <a href="/tags/1/" rel="tag">#1</a>)<br>License page for LibreJS compliance. (fixes <a href="/tags/127/" rel="tag">#127</a>)<br>Highlighting of recently fetched hashtagged posts.</p><p>Changed</p><p>Improved presentation of audio and video media.<br>Refactored theming/styling implementation.</p><p>The next release will focus on smaller features and bug fixes.</p><p>Enjoy!</p><p><a href="/tags/ktistec/" rel="tag">#ktistec</a> <a href="/tags/crystallang/" rel="tag">#crystallang</a> <a href="/tags/activitypub/" rel="tag">#activitypub</a> <a href="/tags/fediverse/" rel="tag">#fediverse</a></p>

<p>Hey, all! I’m seeking some help testing an application I whipped up for the <a href="https://github.com/swicg/geosocial" rel="nofollow">Geosocial task force of the W3C Social Web Community Group</a>. It’s called <a href="https://checkin.swf.pub/ " rel="nofollow"><span class="invisible">https://</span>checkin.swf.pub/</a>, and it’s a barebones checkin service, similar to Swarm, but implemented as a pure Web client. You can watch the application in action.</p><p>It logs into your account on an ActivityPub server using OAuth 2.0. It then reads your inbox, filtering the activities there to only show geosocial ones. You can use the geolocation services in the browser, and the <a href="https://socialwebfoundation.org/2025/04/29/places-pub/" rel="nofollow">places.pub</a> service for a place vocabulary, to find nearby places. You can then “check in” to one of the places, with a note, and control of the privacy of the activity.</p><p><a href="https://www.w3.org/TR/activitystreams-vocabulary/#h-motivations-geo" rel="nofollow">Geosocial activities</a> are part of the core <a href="https://www.w3.org/TR/activitystreams-vocabulary/" rel="nofollow">Activity Vocabulary</a> that underlies ActivityPub. But, they’re not as widely implemented as other activities in the vocabulary. This app is trying to change that, by making them available on the network, and making it easy to create them.</p><p>To test the client, your service will need to support:</p><p><a href="https://www.w3.org/community/reports/socialcg/CG-FINAL-apwf-20240608/" rel="nofollow">Webfinger</a> (for login)<br><a href="https://www.w3.org/TR/activitypub/#client-to-server-interactions" rel="nofollow">ActivityPub API</a> (“client-to-server”, “C2S”)<br><a href="https://codeberg.org/fediverse/fep/src/branch/main/fep/d8c2/fep-d8c2.md" rel="nofollow">FEP-d8c2</a> (OAuth 2.0 profile for ActivityPub API)<br><a href="https://www.w3.org/TR/activitypub/#proxyUrl" rel="nofollow">proxyUrl</a> (for fetching data from remote servers)</p><p>To test federation, your service will need to support:</p><p>Receiving <a href="https://www.w3.org/TR/activitystreams-vocabulary/#dfn-arrive" rel="nofollow">Arrive</a>, <a href="https://www.w3.org/TR/activitystreams-vocabulary/#dfn-leave" rel="nofollow">Leave</a>, and <a href="https://www.w3.org/TR/activitystreams-vocabulary/#dfn-travel" rel="nofollow">Travel</a> activities<br>Showing those activities to users</p><p>As of this writing, Mastodon does not work for either of these. If you want to test receiving federated messages, follow me on [email protected] . I’ve been using it a lot!</p><p>Code for the checkin application is here: <a href="https://github.com/social-web-foundation/checkin" rel="nofollow" class="ellipsis" title="github.com/social-web-foundation/checkin"><span class="invisible">https://</span><span class="ellipsis">github.com/social-web-foundati</span><span class="invisible">on/checkin</span></a></p><p>This is my second ActivityPub API client (<a href="https://github.com/evanp/ap" rel="nofollow">ap</a>, the command-line client, was my first), and my first one for the Web. I found this process really fun and invigorating. I was able to create a new kind of social networking application (well, new on the Fediverse…) purely from the client side. The app saves no data to the server; everything is done in the browser.</p><p>Please reach out on GitHub or comment here if you want to work on interoperability. I’m happy to help debug connections if needed.</p> <small class="notice" x-post-type-data="type=&#x27;Article&#x27; attributed_to=None"> Takahe has limited support for this type: <a href="https://socialwebfoundation.org/2025/07/14/seeking-interop-testing-for-geosocial-activitypub-client/">See Original Article</a> </small>