From 865fd28704c79625d5bc9c9ccdd6d3fb6df962b3 Mon Sep 17 00:00:00 2001
From: Felix <307253927@qq.com>
Date: Fri, 20 Mar 2026 18:21:06 +0800
Subject: [PATCH] fix: The command succeeded, yet the model keeps calling it
 repeatedly.

---
 crates/openfang-runtime/src/tool_runner.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/crates/openfang-runtime/src/tool_runner.rs b/crates/openfang-runtime/src/tool_runner.rs
index 0e185359..ac8e3df2 100644
--- a/crates/openfang-runtime/src/tool_runner.rs
+++ b/crates/openfang-runtime/src/tool_runner.rs
@@ -1549,7 +1549,7 @@ async fn tool_shell_exec(
 
             // Truncate very long outputs to prevent memory issues
             let max_output = 100_000;
-            let stdout_str = if stdout.len() > max_output {
+            let mut stdout_str = if stdout.len() > max_output {
                 format!(
                     "{}...\n[truncated, {} total bytes]",
                     crate::str_utils::safe_truncate_str(&stdout, max_output),
@@ -1568,6 +1568,10 @@ async fn tool_shell_exec(
                 stderr.to_string()
             };
 
+            if exit_code == 0 && stdout_str.is_empty() {
+                stdout_str = "Command executed successfully".to_string();
+            }
+
             Ok(format!(
                 "Exit code: {exit_code}\n\nSTDOUT:\n{stdout_str}\nSTDERR:\n{stderr_str}"
             ))