Does the agent created in eth sepolia not support x402 yet, does the LLM have to be an openapi key, and can other LLMs be customized?

在eth sepolia创建的agent还不支持x402吗，LLM必须是openapi的key吗，是否可以自定义其他的LLM?

<img width="950" height="770" alt="Image" src="https://github.com/user-attachments/assets/7eb95ec1-519a-4590-bdcb-0bd7ddeae183" />


<img width="1776" height="1312" alt="Image" src="https://github.com/user-attachments/assets/e99f4948-62e9-4c87-91a7-af31645358da" />