diff --git a/.codex-server-diagnose.py b/.codex-server-diagnose.py
new file mode 100644
index 00000000..0eb682ba
--- /dev/null
+++ b/.codex-server-diagnose.py
@@ -0,0 +1,20 @@
+import os
+
+import paramiko
+
+
+client = paramiko.SSHClient()
+client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
+client.connect(
+    "119.254.86.251",
+    port=22322,
+    username="root",
+    password=os.environ["TARGET_SSH_PASSWORD"],
+    timeout=15,
+    auth_timeout=15,
+    banner_timeout=15,
+)
+_, stdout, stderr = client.exec_command(os.environ["TARGET_SSH_COMMAND"], timeout=30)
+print(stdout.read().decode(errors="replace"), end="")
+print(stderr.read().decode(errors="replace"), end="")
+client.close()