diff --git a/crates/adapters/activitypub/src/handler.rs b/crates/adapters/activitypub/src/handler.rs
index 242adda..63b85de 100644
--- a/crates/adapters/activitypub/src/handler.rs
+++ b/crates/adapters/activitypub/src/handler.rs
@@ -7,19 +7,25 @@ use url::Url;
 use crate::note::ThoughtNote;
 use crate::urls::ThoughtsUrls;
 use activitypub_base::ApObjectHandler;
-use domain::ports::ActivityPubRepository;
+use domain::ports::{ActivityPubRepository, EventPublisher};
 use domain::value_objects::UserId;
 
 pub struct ThoughtsObjectHandler {
     repo: Arc<dyn ActivityPubRepository>,
     urls: ThoughtsUrls,
+    event_publisher: Option<Arc<dyn EventPublisher>>,
 }
 
 impl ThoughtsObjectHandler {
-    pub fn new(repo: Arc<dyn ActivityPubRepository>, base_url: &str) -> Self {
+    pub fn new(
+        repo: Arc<dyn ActivityPubRepository>,
+        base_url: &str,
+        event_publisher: Option<Arc<dyn EventPublisher>>,
+    ) -> Self {
         Self {
             repo,
             urls: ThoughtsUrls::new(base_url),
+            event_publisher,
         }
     }
 }
@@ -170,11 +176,85 @@ impl ApObjectHandler for ThoughtsObjectHandler {
             .map_err(|e| anyhow!("{e}"))
     }
 
-    async fn on_like(&self, _object_url: &Url, _actor_url: &Url) -> Result<()> {
+    async fn on_like(&self, object_url: &Url, actor_url: &Url) -> Result<()> {
+        let thought_uuid = object_url
+            .path()
+            .strip_prefix("/thoughts/")
+            .and_then(|s| s.split('/').next())
+            .and_then(|s| uuid::Uuid::parse_str(s).ok());
+
+        let thought_uuid = match thought_uuid {
+            Some(u) => u,
+            None => {
+                tracing::debug!(object = %object_url, "on_like: not a local thought URL, skipping");
+                return Ok(());
+            }
+        };
+
+        let actor_user_id = self
+            .repo
+            .find_remote_actor_id(actor_url)
+            .await
+            .map_err(|e| anyhow!("{e}"))?;
+
+        let actor_user_id = match actor_user_id {
+            Some(id) => id,
+            None => {
+                tracing::debug!(actor = %actor_url, "on_like: remote actor not interned, skipping notification");
+                return Ok(());
+            }
+        };
+
+        if let Some(ep) = &self.event_publisher {
+            let thought_id = domain::value_objects::ThoughtId::from_uuid(thought_uuid);
+            let like_id = domain::value_objects::LikeId::new();
+            ep.publish(&domain::events::DomainEvent::LikeAdded {
+                like_id,
+                user_id: actor_user_id,
+                thought_id,
+            })
+            .await
+            .map_err(|e| anyhow!("{e}"))?;
+        }
+
         Ok(())
     }
 
-    async fn on_announce_received(&self, _object_url: &Url, _actor_url: &Url) -> Result<()> {
+    async fn on_announce_received(&self, object_url: &Url, actor_url: &Url) -> Result<()> {
+        let thought_uuid = object_url
+            .path()
+            .strip_prefix("/thoughts/")
+            .and_then(|s| s.split('/').next())
+            .and_then(|s| uuid::Uuid::parse_str(s).ok());
+
+        let thought_uuid = match thought_uuid {
+            Some(u) => u,
+            None => return Ok(()),
+        };
+
+        let actor_user_id = self
+            .repo
+            .find_remote_actor_id(actor_url)
+            .await
+            .map_err(|e| anyhow!("{e}"))?;
+
+        let actor_user_id = match actor_user_id {
+            Some(id) => id,
+            None => return Ok(()),
+        };
+
+        if let Some(ep) = &self.event_publisher {
+            let thought_id = domain::value_objects::ThoughtId::from_uuid(thought_uuid);
+            let boost_id = domain::value_objects::BoostId::new();
+            ep.publish(&domain::events::DomainEvent::BoostAdded {
+                boost_id,
+                user_id: actor_user_id,
+                thought_id,
+            })
+            .await
+            .map_err(|e| anyhow!("{e}"))?;
+        }
+
         Ok(())
     }
 
diff --git a/crates/bootstrap/src/factory.rs b/crates/bootstrap/src/factory.rs
index 335b8aa..e5fd0b9 100644
--- a/crates/bootstrap/src/factory.rs
+++ b/crates/bootstrap/src/factory.rs
@@ -72,6 +72,7 @@ pub async fn build(cfg: &Config) -> Infrastructure {
             Arc::new(ThoughtsObjectHandler::new(
                 Arc::new(PgActivityPubRepository::new(pool.clone())),
                 &cfg.base_url,
+                Some(event_publisher.clone()),
             )),
             cfg.base_url.clone(),
             cfg.allow_registration,
diff --git a/crates/worker/src/factory.rs b/crates/worker/src/factory.rs
index a2bf1f7..91fb5ad 100644
--- a/crates/worker/src/factory.rs
+++ b/crates/worker/src/factory.rs
@@ -46,6 +46,7 @@ pub async fn build(
             Arc::new(ThoughtsObjectHandler::new(
                 Arc::new(PgActivityPubRepository::new(pool.clone())),
                 base_url,
+                None,
             )),
             base_url.to_string(),
             false,