Step 4: Listen for message card callback - 开发教程 - Documentation
https://open.feishu.cn/document/uAjLw4CM/ukTMukTMukTM/reference/im-v1/message-development-tutorial/monitor-and-interact-with-messages-in-the-group2025年4月7日 ... Procedure ... In the Request URL input box, fill in the callback address of your card and click Save. The address format is URL/card , example ...