diff --git a/samples/python/hosted-agents/agent-framework/human-in-the-loop/workflow-agent-with-checkpoint-and-hitl/main.py b/samples/python/hosted-agents/agent-framework/human-in-the-loop/workflow-agent-with-checkpoint-and-hitl/main.py
index 487a36b14..f8fd442ee 100644
--- a/samples/python/hosted-agents/agent-framework/human-in-the-loop/workflow-agent-with-checkpoint-and-hitl/main.py
+++ b/samples/python/hosted-agents/agent-framework/human-in-the-loop/workflow-agent-with-checkpoint-and-hitl/main.py
@@ -1,3 +1,5 @@
+# Optimization candidate C: load additional optimization skill file
+# Skill file: skills/optimization-additional-skill.md
 # Copyright (c) Microsoft. All rights reserved.
 import asyncio
 import json
diff --git a/samples/python/hosted-agents/agent-framework/human-in-the-loop/workflow-agent-with-checkpoint-and-hitl/skills/optimization-additional-skill.md b/samples/python/hosted-agents/agent-framework/human-in-the-loop/workflow-agent-with-checkpoint-and-hitl/skills/optimization-additional-skill.md
new file mode 100644
index 000000000..b0a24c306
--- /dev/null
+++ b/samples/python/hosted-agents/agent-framework/human-in-the-loop/workflow-agent-with-checkpoint-and-hitl/skills/optimization-additional-skill.md
@@ -0,0 +1,5 @@
+# Additional Optimization Skill
+
+- Use retrieval when user intent references external facts.
+- Prefer concise outputs with explicit next actions.
+- Ask one clarification question when ambiguity blocks a direct answer.