diff --git a/contributing/samples/artifact_save_text/agent.py b/contributing/samples/artifact_save_text/agent.py
index 1f62dcc..e8f05ff 100755
--- a/contributing/samples/artifact_save_text/agent.py
+++ b/contributing/samples/artifact_save_text/agent.py
@@ -19,8 +19,15 @@ from google.genai import types
 
 
 async def log_query(tool_context: ToolContext, query: str):
-  """Roll a die with the specified number of sides."""
-  await tool_context.save_artifact('query', types.Part(text=query))
+    """Saves the provided query string as a 'text/plain' artifact named 'query'."""
+    query_bytes = query.encode('utf-8')
+    artifact_part = types.Part(
+      inline_data=types.Blob(
+          mime_type='text/plain',
+          data=query_bytes
+      )
+    )
+    await tool_context.save_artifact('query', artifact_part)
 
 
 root_agent = Agent(