diff --git a/runner.example.json b/runner.example.json
index abbe0a8..56d9b88 100644
--- a/runner.example.json
+++ b/runner.example.json
@@ -1,5 +1,12 @@
 {
-  "argv": ["REPLACE_WITH_YOUR_TOOL_CAPABLE_AGENT_CLI"],
+  "argv": [
+    "codex",
+    "--ask-for-approval", "never",
+    "exec",
+    "--ephemeral",
+    "--sandbox", "workspace-write",
+    "-"
+  ],
   "commands_by_role": {},
   "max_sessions": 1000,
   "timeout_seconds": 1800,