> For the complete documentation index, see [llms.txt](https://api.vietqr.vn/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://api.vietqr.vn/korea/vietqr-xin-chao/api-nang-cao.md).

# API Nâng cao

cao