Matthias Pfefferle

André Menrath

<p>Make your events more discoverable, expand your reach effortlessly while being independent of other (commercial) platforms, and be a part of the growing decentralized web (the Fediverse). With the Event Bridge for ActivityPub Plugin for WordPress, your events can be automatically followed, aggregated and displayed across decentralized platforms like <a href="https://joinmastodon.org" rel="nofollow ugc">Mastodon</a> or <a href="https://gancio.org" rel="nofollow ugc">Gancio</a>, without any extra work. Forget the hassle of managing multiple social media accounts just to keep your audience informed.</p>
<p>This plugin is not an event managing plugin but an add-on to popular event plugins. It extends their functionality to fully support the <a href="https://wordpress.org/plugins/activitypub/" rel="ugc">ActivityPub plugin</a>. With the ActivityPub plugin people can follow your website directly and engage with your events just as they would on social media: liking, boosting and even commenting if you enable it. You retain full ownership of your content. By integrating into your existing setup, it ensures no extra work is needed while enhancing your events’ visibility across the web.</p>
<h4>Supported Event Plugins</h4>
<p>Full support (including importing events from the Fediverse):</p>
<ul>
<li><a href="https://de.wordpress.org/plugins/the-events-calendar/" rel="nofollow ugc">The Events Calendar</a></li>
<li><a href="https://de.wordpress.org/plugins/very-simple-event-list/" rel="nofollow ugc">VS Event List</a></li>
<li><a href="https://gatherpress.org/" rel="nofollow ugc">GatherPress</a></li>
</ul>
<p>Basic support (outgoing events):</p>
<ul>
<li><a href="https://de.wordpress.org/plugins/events-manager/" rel="nofollow ugc">Events Manager</a></li>
<li><a href="https://de.wordpress.org/plugins/wp-event-manager/" rel="nofollow ugc">WP Event Manager</a></li>
<li><a href="https://de.wordpress.org/plugins/wp-event-solution/" rel="nofollow ugc">Eventin</a></li>
<li><a href="https://webnus.net/modern-events-calendar/" rel="nofollow ugc">Modern Events Calendar Lite</a></li>
<li><a href="https://wordpress.org/plugins/event-organiser/" rel="ugc">Event Organiser</a></li>
<li><a href="https://wordpress.org/plugins/eventprime-event-calendar-management/" rel="ugc">EventPrime – Events Calendar, Bookings and Tickets</a></li>
<li><a href="https://wordpress.org/plugins/eventon-lite/" rel="ugc">EventON – Events Calendar</a></li>
</ul>
<h4>How It Works</h4>
<p>With the Event Bridge for ActivityPub WordPress plugin, sharing your events is effortless and automatic! Once you create an event on your WordPress site, it is seamlessly shared across the decentralized web using the ActivityPub protocol.</p>
<div class="embed-vimeo" style="text-align: center;"><iframe loading="lazy" src="https://player.vimeo.com/video/1043105544" width="750" height="422" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe></div>
<p>Your events can be automatically delivered to platforms that fully support events, such as <a href="https://joinmobilizon.org/" rel="nofollow ugc">Mobilizon</a>, <a href="https://gancio.org" rel="nofollow ugc">Gancio</a>, <a href="https://friendi.ca" rel="nofollow ugc">Friendica</a>, <a href="https://hubzilla.org" rel="nofollow ugc">Hubzilla</a>, and <a href="https://pleroma.social/" rel="nofollow ugc">Pleroma</a>. These platforms create public event calendars by pulling in events from various sources, including your website. Any updates you make to your events are synced across these platforms—so you only need to manage your events on your own site, with no extra work required.</p>
<div class="embed-vimeo" style="text-align: center;"><iframe loading="lazy" src="https://player.vimeo.com/video/1043104445" width="750" height="422" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe></div>
<p>Even platforms that don’t yet fully support events, like <a href="https://joinmastodon.org" rel="nofollow ugc">Mastodon</a>, will still receive a detailed, well-composed summary of your event. The Event Federation plugin ensures that users from those platforms are provided with all important information about an event.</p>
<h4>Features for Your WordPress Events and the Fediverse</h4>
<p><strong>ActivityPub-Enabled Event Sharing:</strong> Your WordPress events are now compatible with the Fediverse, using the ActivityStreams format. This means your events can be easily discovered and followed by users on platforms like Mastodon and other ActivityPub-compatible services.</p>
<p><strong>Automatic Event Summaries:</strong> When your event is shared on the Fediverse, platforms like Mastodon that don’t fully support events will display a brief HTML summary of key details — such as the event’s title, start time, and location. This ensures that even if someone can’t view the full event on their platform, they still get the important info at a glance, with a link to your WordPress event page. Advanced users can create custom summaries via a set of shortcodes.</p>
<p><strong>Improved Event Discoverability:</strong> Your custom event categories are mapped to a set of default categories used in the Fediverse, helping your events reach a wider audience. This improves the chances that users searching for similar events on other platforms will find yours.</p>
<p><strong>Event Reminders for Your Followers:</strong> Often, events are planned well in advance. To keep your followers informed right in time, you can set up reminders that are supposed to trigger the events showing up in their timelines right before the event starts. At the moment this reminder is implemented as a self-boost of your original event post. While this feature may behave differently across various platforms, we are working on a more robust solution that will let you schedule dedicated reminder notes that appear in all followers’ timelines.</p>
<p><strong>External Event Sources:</strong>  This functionality is only available for a subset of the supported event plugins. It enables your WordPress site to act as a hub for displaying events from other ActivityPub profiles, aggregating them into a cohesive calendar view.</p>
<h3>Acknowledgement</h3>
<p>The development of this WordPress plugin was funded through the <a href="https://NLnet.nl/entrust" rel="nofollow ugc">NGI0 Entrust</a> Fund, a fund established by <a href="https://nlnet.nl" rel="nofollow ugc">NLnet</a> with financial support from the European Commission’s <a href="https://ngi.eu" rel="nofollow ugc">Next Generation Internet</a> programme, under the aegis of <a href="https://commission.europa.eu/about-european-commission/departments-and-executive-agencies/communications-networks-content-and-technology_en" rel="nofollow ugc">Communications Networks, Content and Technology</a> under grant agreement number 101069594.</p>
<h3>Contributing</h3>
<p>This plugin is free software, and contributions of all kinds are welcome! Whether it’s reporting issues, submitting improvements, or suggesting new features, your input helps make the plugin better for everyone.</p>
<p>Please review our <a href="https://codeberg.org/Event-Federation/wordpress-event-bridge-for-activitypub/src/branch/main/CONTRIBUTING.md" rel="nofollow ugc">Contribution Guidelines</a> to get started. The source code is hosted on <a href="https://codeberg.org/Event-Federation/wordpress-event-bridge-for-activitypub" rel="nofollow ugc">Codeberg</a>, where you can open issues and submit pull requests.</p>
<p>Thank you for contributing!</p>


Event Bridge for ActivityPub


@andremenrath you did and do an awesome job bringing Events of a bunch of WordPress plugins to the fediverse! Keep up the good work 🎉


Awesome work!

Integrating popular event plugins with the ActivityPub plugin.

<p><a href="http://nodeinfo.diaspora.software/" rel="nofollow ugc">NodeInfo</a> is an effort to create a standardized way of exposing metadata about a server running one of the distributed social networks. The two key goals are being able to get better insights into the user base of distributed social networking and the ability to build tools that allow users to choose the best fitting software and server for their needs.</p>
<p>This plugin provides a barebone JSON file with basic “node”-informations. The file can be extended by other WordPress plugins, like <a href="https://wordpress.org/plugins/ostatus-for-wordpress/" rel="ugc">OStatus</a>, <a href="https://github.com/pfefferle/wordpress-dandelion" rel="nofollow ugc">Diaspora</a> or <a href="https://wordpress.org/plugins/activitypub/" rel="ugc">ActivityPub</a>/<a href="https://wordpress.org/plugins/pterotype/" rel="ugc">Pterotype</a>.</p>
<h3>What information does this plugin share?</h3>
<p>The plugin exposes the following public information about your site:</p>
<ul>
<li><strong>Software</strong>: WordPress version (major version only for privacy)</li>
<li><strong>Usage statistics</strong>: Number of users, posts, and comments</li>
<li><strong>Site info</strong>: Your site name and description</li>
<li><strong>Protocols</strong>: Which federation protocols your site supports (e.g., ActivityPub)</li>
<li><strong>Services</strong>: Which external services your site can connect to (e.g., RSS feeds)</li>
</ul>
<p>This information helps other servers in the Fediverse discover and interact with your site.</p>
<h3>Supported NodeInfo versions</h3>
<p>This plugin supports all major NodeInfo specification versions:</p>
<ul>
<li><strong>NodeInfo 1.0</strong> and <strong>1.1</strong> – Original specifications</li>
<li><strong>NodeInfo 2.0</strong>, <strong>2.1</strong>, and <strong>2.2</strong> – Current specifications with extended metadata</li>
<li><strong>NodeInfo2</strong> – Alternative single-endpoint format</li>
</ul>
<h3>Endpoints</h3>
<p>After activation, the following endpoints become available:</p>
<ul>
<li><code>/.well-known/nodeinfo</code> – Discovery document (start here)</li>
<li><code>/wp-json/nodeinfo/2.2</code> – NodeInfo 2.2 (recommended)</li>
<li><code>/wp-json/nodeinfo/2.1</code> – NodeInfo 2.1</li>
<li><code>/wp-json/nodeinfo/2.0</code> – NodeInfo 2.0</li>
<li><code>/wp-json/nodeinfo/1.1</code> – NodeInfo 1.1</li>
<li><code>/wp-json/nodeinfo/1.0</code> – NodeInfo 1.0</li>
<li><code>/.well-known/x-nodeinfo2</code> – NodeInfo2 format</li>
</ul>


Event Bridge for ActivityPub vs NodeInfo(2)