Hey @ngochip, following up as promised. Sub-agents now use your custom OpenAI API key and base URL the same way the main agent does, so they no longer fall back to Cursor’s servers and the slow pool message. This shipped a while ago and is enabled for everyone on a current version, so it should already be working for you.
If anyone still sees sub-agents fail this way or bill against the plan on the latest version, please open a new thread with a Request ID from the failed sub-agent chat (chat menu > Copy Request ID). This topic is closed for replies, so a new thread is the right place.