diff --git a/src/ai_response.rs b/src/ai_response.rs
index a3774fd..c5b1d8b 100644
--- a/src/ai_response.rs
+++ b/src/ai_response.rs
@@ -19,3 +19,41 @@ pub struct AiConversation {
     pub temperature: f32,
     pub stream: bool,
 }
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct StreamEvent {
+    #[serde(rename = "type")]
+    pub event_type: String,
+    pub content: Option<String>,
+    pub error: Option<String>,
+    pub message_id: Option<String>,
+}
+
+impl StreamEvent {
+    pub fn content(content: String) -> Self {
+        Self {
+            event_type: "content".to_string(),
+            content: Some(content),
+            error: None,
+            message_id: None,
+        }
+    }
+
+    pub fn error(error: String) -> Self {
+        Self {
+            event_type: "error".to_string(),
+            content: None,
+            error: Some(error),
+            message_id: None,
+        }
+    }
+
+    pub fn done(message_id: String) -> Self {
+        Self {
+            event_type: "done".to_string(),
+            content: None,
+            error: None,
+            message_id: Some(message_id),
+        }
+    }
+}