fix(workflows): make credit card capture stateful

examples/voice_agents/README.md

@@ -23,6 +23,13 @@ session = AgentSession(
 ### Getting Started
 
 - [`basic_agent.py`](./basic_agent.py) - A fundamental voice agent with multilingual STT, turn detection, preemptive generation, and metrics collection
+- [`credit_card_collection.py`](./credit_card_collection.py) - Stateful credit-card collection with confirmation
+
+Run the credit-card collection example in console mode:
+
+```bash
+uv run examples/voice_agents/credit_card_collection.py console
+```
 
 ### Real-time Models
 

examples/voice_agents/credit_card_collection.py

@@ -0,0 +1,50 @@
+import logging
+
+from dotenv import load_dotenv
+
+from livekit.agents import Agent, AgentServer, AgentSession, JobContext, cli, inference
+from livekit.agents.beta.workflows import GetCreditCardTask
+
+logger = logging.getLogger("credit-card-collection")
+
+load_dotenv()
+
+
+class CreditCardCollectionAgent(Agent):
+    def __init__(self) -> None:
+        super().__init__(
+            instructions=(
+                "You are a payment assistant. Never repeat, summarize, or expose payment "
+                "details supplied by the user."
+            )
+        )
+
+    async def on_enter(self) -> None:
+        await GetCreditCardTask(require_confirmation=True)
+
+        # Keep PCI-sensitive result fields out of logs and follow-up model context.
+        logger.info("credit-card collection completed")
+        await self.session.generate_reply(
+            instructions=(
+                "Tell the user their payment details were collected successfully. "
+                "Do not repeat any payment details."
+            )
+        )
+
+
+server = AgentServer()
+
+
+@server.rtc_session()
+async def entrypoint(ctx: JobContext) -> None:
+    session: AgentSession = AgentSession(
+        stt=inference.STT("deepgram/nova-3", language="multi"),
+        llm=inference.LLM("openai/gpt-5.4"),
+        tts=inference.TTS("cartesia/sonic-3", voice="9626c31c-bec5-4cca-baa8-f8ba9e84c8bc"),
+    )
+
+    await session.start(agent=CreditCardCollectionAgent(), room=ctx.room)
+
+
+if __name__ == "__main__":
+    cli.run_app(server)