diff --git a/crates/tools/src/lib.rs b/crates/tools/src/lib.rs
index b8be58246..279df2be2 100644
--- a/crates/tools/src/lib.rs
+++ b/crates/tools/src/lib.rs
@@ -521,6 +521,16 @@ mod tests {
 
     use super::*;
 
+    #[test]
+    fn test_tool_result_success() {
+        let content = "operation completed successfully";
+        let result = ToolResult::success(content);
+
+        assert!(result.success);
+        assert_eq!(result.content, content);
+        assert!(result.metadata.is_none());
+    }
+
     #[test]
     fn tool_result_json_round_trips_content() {
         let result = ToolResult::json(&json!({"ok": true})).expect("json");