diff --git a/agents/runner.py b/agents/runner.py
index 92c5e70..fe760b0 100644
--- a/agents/runner.py
+++ b/agents/runner.py
@@ -233,7 +233,7 @@ def run_agent(
     return {
         "success": success,
         "error": result.get("error") if not success else None,
-        "output": parsed_output if parsed_output else output_text,
+        "output": output_text if parsed_output is None else parsed_output,
         "raw_output": output_text,
         "role": role,
         "model": model,
@@ -310,7 +310,8 @@ def _run_claude(
         result["tokens_used"] = parsed.get("usage", {}).get("total_tokens")
         result["cost_usd"] = parsed.get("cost_usd")
         # Extract the agent's actual response, converting to string if needed
-        content = parsed.get("result") or parsed.get("content")
+        result_val = parsed.get("result")
+        content = result_val if result_val is not None else parsed.get("content")
         if content is not None:
             result["output"] = content if isinstance(content, str) else json.dumps(content, ensure_ascii=False)