diff --git a/src/activitypub.rs b/src/activitypub.rs
index 1f1417d..e77dd90 100644
--- a/src/activitypub.rs
+++ b/src/activitypub.rs
@@ -12,12 +12,19 @@ pub struct Actor {
     pub icon: Option<Media>,
     pub inbox: String,
     pub outbox: Option<String>,
+    pub endpoints: Option<ActorEndpoints>,
     #[serde(rename = "publicKey")]
     pub public_key: ActorPublicKey,
     #[serde(rename = "preferredUsername")]
     pub preferred_username: Option<String>,
 }
 
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ActorEndpoints {
+    #[serde(rename = "sharedInbox")]
+    pub shared_inbox: String,
+}
+
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct ActorPublicKey {
     pub id: String,
diff --git a/src/actor.rs b/src/actor.rs
index ad8de30..f571d45 100644
--- a/src/actor.rs
+++ b/src/actor.rs
@@ -56,6 +56,9 @@ impl Actor {
                 url: "https://fedi.buzz/assets/favicon48.png".to_string(),
             }),
             inbox: self.uri(),
+            endpoints: Some(activitypub::ActorEndpoints {
+                shared_inbox: format!("https://{}/instance/{}", self.host, self.host),
+            }),
             outbox: Some(format!("{}/outbox", self.uri())),
             public_key: activitypub::ActorPublicKey {
                 id: self.key_id(),