fix: Instruct agent to retry tool failures

Author: clareliguori

e2e_tests/python/fail_on_tool_error.py

@@ -12,7 +12,6 @@
     create_lambda_function_url_client,
     create_automated_oauth_client,
 )
-from fail_on_tool_error import FailOnToolError
 
 # Configure logging
 logging.basicConfig(
@@ -83,8 +82,7 @@ def main() -> None:
     agent = Agent(
         model=bedrock_model,
         tools=mcp_clients,
-        system_prompt="You are a helpful assistant.",
-        hooks=[FailOnToolError()],
+        system_prompt="You are a helpful assistant. Always retry on tool errors, to recover from transient failures.",
     )
 
     # Run test utterances

e2e_tests/python/main.py

@@ -2,7 +2,7 @@
   "stdioServers": {
     "fetch": {
       "command": "uvx",
-      "args": ["mcp-server-fetch"]
+      "args": ["--quiet", "mcp-server-fetch"]
     }
   },
   "lambdaFunctionServers": {