copy

Author: moritzwilksch

pydantic_ai_slim/pydantic_ai/agent/abstract.py

@@ -493,7 +493,7 @@ async def stream_to_final(
                                 raise exceptions.AgentRunError('Agent run produced final results')  # pragma: no cover
                             yielded = True
 
-                            messages = graph_ctx.state.message_history
+                            messages = graph_ctx.state.message_history.copy()
 
                             async def on_complete() -> None:
                                 """Called when the stream has completed.