Construct, refine, review, validate, and package polished Feishu/Lark Card JSON 2.0 payloads. Use when creating cards for Feishu custom-bot webhooks, application bots, notifications, alerts, reports, dashboards, approvals, forms, callbacks, updates, streaming AI output, Markdown-rich content, tables, charts, images, audio, localization, or responsive layouts; also use when converting a content brief or legacy card into strict JSON 2.0 or diagnosing a rejected card payload.
2026-07-21