diff --git a/developer_manual/digging_deeper/index.rst b/developer_manual/digging_deeper/index.rst
index 0387a48b0..3d31c96b3 100644
--- a/developer_manual/digging_deeper/index.rst
+++ b/developer_manual/digging_deeper/index.rst
@@ -28,3 +28,4 @@ Digging deeper
    web_host_metadata
    status
    security
+   profile
diff --git a/developer_manual/digging_deeper/profile.rst b/developer_manual/digging_deeper/profile.rst
new file mode 100644
index 000000000..031d794ff
--- /dev/null
+++ b/developer_manual/digging_deeper/profile.rst
@@ -0,0 +1,185 @@
+=======
+Profile
+=======
+
+The user profile presents the information of a user including their full name,
+profile picture, organisation, role, location, biography, headline, as well as
+actionable information that we call profile actions. These actions can include
+starting a `Nextcloud Talk <https://nextcloud.com/talk/>` chat with the user,
+sending an email, visiting their website, opening their Twitter profile,
+calling their phone number, scheduling an appointment, and more.
+
+App developers can integrate into profile and provide their own actions.
+
+Register a profile action
+-------------------------
+
+A profile action is represented by a class implementing the `OCP\\Profile\\ILinkAction`
+interface. This class is instantiated whenever the user profile is loaded.
+
+.. code-block:: php
+
+    <?php
+
+    declare(strict_types=1);
+
+    namespace OCA\MyApp\Profile;
+
+    use OCP\Accounts\IAccountManager;
+    use OCP\IURLGenerator;
+    use OCP\IUser;
+    use OCP\IL10N;
+    use OCP\Profile\ILinkAction;
+
+    class MyProfileAction implements ILinkAction {
+
+        /** @var string */
+        private $targetUser;
+
+        /** @var IAccountManager */
+        private $accountManager;
+
+        /** @var IL10N */
+        private $l10n;
+
+        /** @var IUrlGenerator */
+        private $urlGenerator;
+
+        public function __construct(
+            IAccountManager $accountManager,
+            IL10N $l10n,
+            IURLGenerator $urlGenerator
+        ) {
+            $this->accountManager = $accountManager;
+            $this->l10n = $l10n;
+            $this->urlGenerator = $urlGenerator;
+        }
+
+        /**
+         * Preload the user specific value required by the action
+         *
+         * e.g. the email is loaded for the email action and the userId for the Talk action
+         *
+         * @since 23.0.0
+         */
+        public function preload(IUser $targetUser): void {
+            $this->targetUser = $targetUser;
+        }
+
+        /**
+         * Returns the app ID of the action
+         *
+         * e.g. 'spreed'
+         *
+         * @since 23.0.0
+         */
+        public function getAppId(): string {
+            return 'my_app_id';
+        }
+
+        /**
+         * Returns the unique ID of the action
+         *
+         * *For account properties this is the constant defined in lib/public/Accounts/IAccountManager.php*
+         *
+         * e.g. 'email'
+         *
+         * @since 23.0.0
+         */
+        public function getId(): string {
+            return 'my_unique_action';
+        }
+
+        /**
+         * Returns the translated unique display ID of the action
+         *
+         * Should be something short and descriptive of the action
+         * as this is seen by the end-user when configuring actions
+         *
+         * e.g. 'Email'
+         *
+         * @since 23.0.0
+         */
+        public function getDisplayId(): string {
+            return $this->l10n->t('My unique action');
+        }
+
+        /**
+         * Returns the translated title
+         *
+         * e.g. 'Mail user@domain.com'
+         *
+         * Use the L10N service to translate it
+         *
+         * @since 23.0.0
+         */
+        public function getTitle(): string {
+            return $this->l10n->t('Ping %s', [$this->targetUser->getDisplayName()]);
+        }
+
+        /**
+         * Returns the priority
+         *
+         * *Actions are sorted in ascending order*
+         *
+         * e.g. 60
+         *
+         * @since 23.0.0
+         */
+        public function getPriority(): int {
+            return 60;
+        }
+
+        /**
+         * Returns the URL link to the 16*16 SVG icon
+         *
+         * @since 23.0.0
+         */
+        public function getIcon(): string {
+            return $this->urlGenerator->getAbsoluteURL($this->urlGenerator->imagePath('my_app_id', 'actions/my_unique_action.svg'));
+        }
+
+        /**
+         * Returns the target of the action,
+         * if null is returned the action won't be registered
+         *
+         * e.g. 'mailto:user@domain.com'
+         *
+         * @since 23.0.0
+         */
+        public function getTarget(): ?string {
+            return $this->urlGenerator->linkToRouteAbsolute('my_app_id.Page.index') . '?pingUser=' . $this->targetUser->getUID();
+        }
+    }
+
+The `MyProfileAction` class needs to be registered during the :ref:`app bootstrap<Bootstrapping>`.
+
+.. code-block:: php
+
+    <?php
+
+    declare(strict_types=1);
+
+    namespace OCA\MyApp\AppInfo;
+
+    use OCP\AppFramework\App;
+    use OCP\AppFramework\Bootstrap\IBootContext;
+    use OCP\AppFramework\Bootstrap\IBootstrap;
+    use OCP\AppFramework\Bootstrap\IRegistrationContext;
+    use OCA\MyApp\Profile\MyProfileAction;
+
+    class Application extends App implements IBootstrap {
+
+        public const APP_ID = 'my_app_id';
+
+        public function __construct(array $urlParams = []) {
+            parent::__construct(self::APP_ID, $urlParams);
+        }
+
+        public function register(IRegistrationContext $context): void {
+            $context->registerProfileLinkAction(MyProfileAction::class);
+        }
+
+        public function boot(IBootContext $context): void {
+        }
+    }