diff --git a/crates/acp_thread/src/acp_thread.rs b/crates/acp_thread/src/acp_thread.rs
index 779f9964da..4ded647a74 100644
--- a/crates/acp_thread/src/acp_thread.rs
+++ b/crates/acp_thread/src/acp_thread.rs
@@ -183,16 +183,15 @@ impl ToolCall {
         language_registry: Arc<LanguageRegistry>,
         cx: &mut App,
     ) -> Self {
+        let title = if let Some((first_line, _)) = tool_call.title.split_once("\n") {
+            first_line.to_owned() + "…"
+        } else {
+            tool_call.title
+        };
         Self {
             id: tool_call.id,
-            label: cx.new(|cx| {
-                Markdown::new(
-                    tool_call.title.into(),
-                    Some(language_registry.clone()),
-                    None,
-                    cx,
-                )
-            }),
+            label: cx
+                .new(|cx| Markdown::new(title.into(), Some(language_registry.clone()), None, cx)),
             kind: tool_call.kind,
             content: tool_call
                 .content
@@ -233,7 +232,11 @@ impl ToolCall {
 
         if let Some(title) = title {
             self.label.update(cx, |label, cx| {
-                label.replace(title, cx);
+                if let Some((first_line, _)) = title.split_once("\n") {
+                    label.replace(first_line.to_owned() + "…", cx)
+                } else {
+                    label.replace(title, cx);
+                }
             });
         }